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Note: This page contains sample records for the topic "brakes regenerative braking" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


1

Adaptive controller for regenerative and friction braking system  

DOE Patents (OSTI)

A regenerative and friction braking system for a vehicle having one or more roadwheels driven by an electric traction motor includes a driver responsive device for producing a brake demand signal having a magnitude corresponding to the level of braking force selected by the driver and friction and regenerative brakes operatively connected with the roadwheels of the vehicle. A system according to this invention further includes control means for operating the friction and regenerative braking subsystems so that maximum brake torques sustainable by the roadwheels of the vehicle without skidding or slipping will not be exceeded.

Davis, Roy I. (Ypsilanti, MI)

1990-01-01T23:59:59.000Z

2

Electric vehicle regenerative antiskid braking and traction control system  

DOE Patents (OSTI)

An antiskid braking and traction control system for an electric or hybrid vehicle having a regenerative braking system operatively connected to an electric traction motor, and a separate hydraulic braking system includes one or more sensors for monitoring present vehicle parameters and a processor, responsive to the sensors, for calculating vehicle parameters defining the vehicle behavior not directly measurable by the sensors and determining if regenerative antiskid braking control, requiring hydrualic braking control, or requiring traction control are required. The processor then employs a control strategy based on the determined vehicle state and provides command signals to a motor controller to control the operation of the electric traction motor and to a brake controller to control fluid pressure applied at each vehicle wheel to provide the appropriate regenerative antiskid braking control, hydraulic braking control, and traction control.

Cikanek, Susan R. (Wixom, MI)

1995-01-01T23:59:59.000Z

3

Fuzzy logic electric vehicle regenerative antiskid braking and traction control system  

DOE Patents (OSTI)

An regenerative antiskid braking and traction control system using fuzzy logic for an electric or hybrid vehicle having a regenerative braking system operatively connected to an electric traction motor, and a separate hydraulic braking system includes sensors for monitoring present vehicle parameters and a processor, responsive to the sensors, for calculating vehicle parameters defining the vehicle behavior not directly measurable by the sensor and determining if regenerative antiskid braking control, requiring hydraulic braking control, and requiring traction control are required. The processor then employs fuzzy logic based on the determined vehicle state and provides command signals to a motor controller to control operation of the electric traction motor and to the brake controller to control fluid pressure applied at each vehicle wheel to provide the appropriate regenerative braking control, hydraulic braking control, and traction control.

Cikanek, Susan R. (Wixom, MI)

1994-01-01T23:59:59.000Z

4

Hybrid: Braking  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

1 1 Regenerative braking converts otherwise wasted energy from braking into electricity and stores it in the battery. In regenerative braking, the electric motor is reversed so that, instead of using electricity to turn the wheels, the rotating wheels turn the motor and create electricity. Using energy from the wheels to turn the motor slows the vehicle down. Go to next… stage graphic: vertical blue rule Main stage: See through car with battery, engine, and electric motor visible. The car is decelerating. There are arrows flowing from the front wheels to the electric motor to the battery. Main stage: See through car with battery, engine, and electric motor visible. The car is decelerating. There are arrows flowing from the front wheels to the electric motor to the battery.

5

Hybrid: Braking  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

2 2 If additional stopping power is needed, conventional friction brakes (e.g., disc brakes) are also applied automatically. Go back… stage graphic: vertical blue rule Main stage: See through car with battery, engine, and electric motor visible. The car is stopped at an intersection. Main stage: See through car with battery, engine, and electric motor visible. The car is stopped at an intersection. Battery: The battery stores energy generated from the gasoline engine or, during regenerative braking, from the electric motor. Since the battery helps power the vehicle, it is larger and holds much more energy than batteries used to start conventional vehicles. Main stage: See through car with battery, engine, and electric motor visible. The car is stopped at an intersection.

6

Full Hybrid: Braking  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Braking button highlighted Stopped button Braking button highlighted Stopped button BRAKING PART 1 Regenerative braking converts otherwise wasted energy from braking into electricity and stores it in the battery. In regenerative braking, the electric motor is reversed so that, instead of using electricity to turn the wheels, the rotating wheels turn the motor and create electricity. Using energy from the wheels to turn the motor slows the vehicle down. Go to next… stage graphic: vertical blue rule Main stage: See through car with battery, engine, generator, power split device, and electric motor visible. The car is decelerating. There are arrows flowing from the front wheels to the power split device to the electric motor to the battery. Main stage: See through car with battery, engine, generator, power split device, and electric motor visible. The car is decelerating. There are arrows flowing from the front wheels to the power split device to the electric motor to the battery.

7

Hybrid: Braking  

NLE Websites -- All DOE Office Websites (Extended Search)

Button Stopped button highlighted subbanner graphic: gray bar Button Stopped button highlighted subbanner graphic: gray bar STOPPED When the vehicle is stopped, such as at a red light, the gasoline engine and electric motor shut off automatically so that energy is not wasted in idling. The battery continues to power auxillary systems, such as the air conditioning and dashboard displays. stage graphic: vertical blue rule Main stage: See through car with battery, engine, and electric motor visible. The car is stopped at an intersection. Main stage: See through car with battery, engine, and electric motor visible. The car is stopped at an intersection. Battery: The battery stores energy generated from the gasoline engine or, during regenerative braking, from the electric motor. Since the battery helps power the vehicle, it is larger and holds much more energy than batteries used to start conventional vehicles. Main stage: See through car with battery, engine, and electric motor visible. The car is stopped at an intersection.

8

Hybrid: Braking  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Button Stopped button highlighted subbanner graphic: gray bar Button Stopped button highlighted subbanner graphic: gray bar STOPPED When the vehicle is stopped, such as at a red light, the gasoline engine and electric motor shut off automatically so that energy is not wasted in idling. The battery continues to power auxillary systems, such as the air conditioning and dashboard displays. stage graphic: vertical blue rule Main stage: See through car with battery, engine, and electric motor visible. The car is stopped at an intersection. Main stage: See through car with battery, engine, and electric motor visible. The car is stopped at an intersection. Battery: The battery stores energy generated from the gasoline engine or, during regenerative braking, from the electric motor. Since the battery helps power the vehicle, it is larger and holds much more energy than batteries used to start conventional vehicles. Main stage: See through car with battery, engine, and electric motor visible. The car is stopped at an intersection.

9

Improvements of vehicle fuel economy using mechanical regenerative braking  

Science Journals Connector (OSTI)

The paper presents a mixed theoretical and experimental evaluation of the improvements in fuel economy that follow the introduction of a mechanical Kinetic Energy Recovery System (KERS) on a full size passenger car. This system, made up of a high speed storage flywheel and a Constant Variable Transmission (CVT), has a full regenerative cycle overall efficiency about twice the efficiency of battery-based hybrids. With reference to the baseline configuration having a 4L gasoline engine, adoption of a KERS may reduce the fuel consumption covering the NEDC by 25% without downsizing, and by 33% downsizing the engine to 3.3L.

Alberto A. Boretti

2011-01-01T23:59:59.000Z

10

Hybrid Braking System for Non-Drive Axles  

Energy.gov (U.S. Department of Energy (DOE))

A hybrid braking system is designed to conserve diesel fuel (or alternative fuels) by using regenerative braking, which extends hybrid technology to non-drive axles.

11

Design Principles of a flywheel Regenerative Braking System (f-RBS) for Formula SAE type racecar and system testing on a Virtual Test Rig modeled on MSC ADAMS  

E-Print Network (OSTI)

momentum in the industry [4]. These vehicles (BEVs and HEVS) use electric motor/generator pairs to propel themselves and to recapture braking energy (electric RBS) and the power source is the battery. The regenerative braking system uses a generator..., aerodynamic and road losses. 4. Improvised Transmission design to reduce losses. 5. Hybrid and Alternative Energy Propulsion systems e.g. the Hybrid Electric Vehicle (HEV), the Fuel Cell Vehicle (FCV). 6. Recycling Braking energy Storage and reuse...

Pochiraju, Anirudh

2012-08-31T23:59:59.000Z

12

Svendborg Brakes | Open Energy Information  

Open Energy Info (EERE)

Name: Svendborg Brakes Place: Denmark Sector: Wind energy Product: Denmark-based manufacturer of braking systems for the wind industry, as well as for the oil sector....

13

WIND BRAKING OF MAGNETARS  

SciTech Connect

We explore the wind braking of magnetars considering recent observations challenging the traditional magnetar model. There is evidence for strong multipole magnetic fields in active magnetars, but the dipole field inferred from spin-down measurements may be strongly biased by particle wind. Recent observations challenging the traditional model of magnetars may be explained naturally by the wind braking scenario: (1) the supernova energies of magnetars are of normal value; (2) the non-detection in Fermi observations of magnetars; (3) the problem posed by low magnetic field soft gamma-ray repeaters; (4) the relation between magnetars and high magnetic field pulsars; and (5) a decreasing period derivative during magnetar outbursts. Transient magnetars with L{sub x}<- E-dot{sub rot} may still be magnetic dipole braking. This may explain why low luminosity magnetars are more likely to have radio emissions. A strong reduction of the dipole magnetic field is possible only when the particle wind is very collimated at the star surface. A small reduction of the dipole magnetic field may result from detailed considerations of magnetar wind luminosity. In the wind braking scenario, magnetars are neutron stars with a strong multipole field. For some sources, a strong dipole field may no longer be needed. A magnetism-powered pulsar wind nebula will be one of the consequences of wind braking. For a magnetism-powered pulsar wind nebula, we should see a correlation between the nebula luminosity and the magnetar luminosity. Under the wind braking scenario, a braking index smaller than three is expected. Future braking index measurement of a magnetar may tell us whether magnetars are wind braking or magnetic dipole braking.

Tong, H. [Xinjiang Astronomical Observatory, Chinese Academy of Sciences, Urumqi, Xinjiang 830011 (China); Xu, R. X.; Qiao, G. J. [KIAA and School of Physics, Peking University, Beijing 100871 (China); Song, L. M., E-mail: tonghao@xao.ac.cn [Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049 (China)

2013-05-10T23:59:59.000Z

14

Hydraulic Drivetrain and Regenerative Braking Team 13: Andrew Brown, Karan Desai, Andrew McGrath, Hurst Nuckols, Grant Wilson Adviser: Dr. Andrew Jackson  

E-Print Network (OSTI)

. The main components of the model include an electric motor, hydraulic pump, hydraulic motor and two 1 flow during regenerative braking Electric Motor: Provides rotational energy to the hydraulic drivetrain (% kinetic energy recovered) 24.73% Drivetrain Efficiency 67.02% Overall Efficiency 53.47% Current Electric

Carpick, Robert W.

15

Chapter 9 - Brake Testing  

Science Journals Connector (OSTI)

Abstract This chapter describes and explains the role and methods of experimental testing in the design and verification of brakes and their components. It starts by discussing the increasing capability of computer-based predictive techniques, which can simulate many aspects of brake operation and save time and cost compared with previous methods of experimental evaluation. Preparation, procedures, instrumentation, data acquisition and results analysis, interpretation and reporting for experimental testing ranging from whole vehicle braking performance on a test track to component performance and material thermophysical properties in the laboratory, are explained and discussed. By the end of the chapter the design and operation of test rigs including inertia dynamometers for full-size brakes, scale rigs for small-sample friction and wear measurement, machines for cyclic loading and material property measurement, etc. are described. The importance of careful preparation of the friction pair (bedding-in and burnishing) for brake performance testing and the evaluation of variability by repeat testing is emphasised.

Andrew Day

2014-01-01T23:59:59.000Z

16

Chapter 6 - Brake System Layout Design  

Science Journals Connector (OSTI)

Abstract This chapter brings together high-level braking system design (Chapters 3 and 4Chapter 3Chapter 4) and the design of friction brakes (Chapter 5) to complete the layout design of road vehicle braking systems. Two actuation systems are studied: hydraulic (used on passenger cars and light commercial vehicles) and pneumatic (used on heavy commercial vehicles). Other braking technologies (e.g. regenerative) and actuation systems (e.g. power hydraulic and electromechanical) are also mentioned. A four-step design procedure is presented, which includes designing the basic braking system parameters based on the vehicle configuration, specifying the brakes (size and torque capacity), designing the actuation system, and verification (legislative requirements). Examples are presented for a hydraulic system with a vacuum booster (passenger car) and a pneumatic system (articulated commercial vehicle), which illustrate the important features of achieving a good basic system configuration. In passenger cars, the importance of driver interface parameters such as pedal feel is explained, and for commercial vehicles, compatibility, load sensing, and predominance between the trailer and towing vehicle brake systems is discussed.

Andrew Day

2014-01-01T23:59:59.000Z

17

Modeling of air brakes for onboard diagnostics of heavy trucks  

E-Print Network (OSTI)

declared out of service. Worn brake pads and tires, air leaks at hoses, connections, valves and brake chambers of the airbrake system along with the significant time delay in the actuation of tractor and trailer brakes degrade the vehicle braking...

Kankanala, Penchala N

2012-06-07T23:59:59.000Z

18

Innovative vibration measurement technology for brake development  

Science Journals Connector (OSTI)

Apart from working reliably and providing safety, the comfort features of brakes in vehicles these days have become very significant. The requirement of a noiseless brake system always poses an important chall...

Dipl.-Ing. Holger Marschner; Dr. rer. nat. Dirk Reckwerth

2008-02-01T23:59:59.000Z

19

Heavy Overweight Vehicle Brake Testing (HOVBT)  

E-Print Network (OSTI)

Heavy Overweight Vehicle Brake Testing (HOVBT) Oak Ridge National Laboratory managed by UT for a real-time on-board brake assessment tool. Test Overview A combination tractor-trailer will be given a complete brake rebuild prior to several tests performed at fully -laden and several overweight loading

20

6 - Engine brake performance in diesel engine system design  

Science Journals Connector (OSTI)

Abstract: This chapter provides a comprehensive theory on engine brake performance. It first discusses vehicle braking requirement and the impact on enginevehicle matching in engine brake operation, followed by a comparison between engine brakes and drivetrain retarders. It then introduces drivetrain retarders in detail including their torque and cooling characteristics. The performance characteristics of exhaust brakes and compression brakes are elaborated including their mechanisms and the interactions with valvetrain, variable valve actuation (VVA) and turbocharger. The principles of engine brake design are introduced through comprehensive simulation analysis on engine thermodynamic cycles in braking operation. A braking gas recirculation (BGR) theory is developed.

Qianfan Xin

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "brakes regenerative braking" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Disturbance Control of the Hydraulic Brake in a Wind Turbine  

E-Print Network (OSTI)

Disturbance Control of the Hydraulic Brake in a Wind Turbine Frank Jepsen, Anders Søborg brake in a wind turbine. Brake torque is determined by friction coefficient and clamp force; the latter brake is one1 of the two independent brake systems in a wind turbine. As a consequence of the gearing

Yang, Zhenyu

22

Wide speed range for traction motor in braking force of electric braking control system  

Science Journals Connector (OSTI)

A vehicle stopping method using an electric brake until a traction motor is stopped is studied. At the moment of vehicle stop, electric brake is changed to control mode where ... is controlled by estimating the l...

Young-Choon Kim; Moon-Taek Cho

2014-10-01T23:59:59.000Z

23

Electric Braking Control System to Secure Braking Force in the Wide Speed Range of Traction Motor  

Science Journals Connector (OSTI)

In this paper, a vehicle stopping method using an electric brake until a traction motor is stopped is studied. At the moment of vehicle stop, electric brake is changed to control mode wherein ... is controlled by...

Young-Choon Kim; Moon-Taek Cho; Ok-Hwan Kim

2014-01-01T23:59:59.000Z

24

PREDICTING RANGES FOR PULSARS' BRAKING INDICES  

SciTech Connect

The theoretical determination of braking indices of pulsars is still an open problem. In this paper we report results of a study concerning such determination based on a modification of the canonical model, which admits that pulsars are rotating magnetic dipoles, and on data from the seven pulsars with known braking indices. In order to test the modified model, we predict ranges for the braking indices of other pulsars.

Magalhaes, Nadja S.; Miranda, Thaysa A. [Federal University of Sao Paulo, DCET, Rua Sao Nicolau 210, Diadema, SP 09913-030 (Brazil); Frajuca, Carlos, E-mail: nadjasm@gmail.com [Federal Institute of Education, Science and Technology of Sao Paulo, R. Pedro Vicente 625, Sao Paulo, SP 01109-010 (Brazil)

2012-08-10T23:59:59.000Z

25

TMV Technology Capabilities Brake Stroke Monitor  

E-Print Network (OSTI)

TMV Technology Capabilities Brake Stroke Monitor Brake monitoring systems are proactive maintenance This technology allows for CMV operators to have knowledge of their steer, drive, and tandem axle group weights setup is required. Current Safety/Enforcement Technologies EOBR (electronic on-board recorder) On

26

Contactless magnetic brake for automotive applications  

E-Print Network (OSTI)

CONTACTLESS MAGNETIC BRAKE FOR AUTOMOTIVE APPLICATIONS A Dissertation by SEBASTIEN EMMANUEL GAY Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of DOCTOR... OF PHILOSOPHY May 2005 Major Subject: Electrical Engineering CONTACTLESS MAGNETIC BRAKE FOR AUTOMOTIVE APPLICATIONS A Dissertation by SEBASTIEN EMMANUEL GAY Submitted to Texas A&M University in partial fulfillment of the requirements...

Gay, Sebastien Emmanuel

2009-05-15T23:59:59.000Z

27

The braking performance of tractor-trailer combinations  

Science Journals Connector (OSTI)

Equations are derived for the maximum decelerations which can be obtained with balanced and unbalanced trailers with and without trailer brakes. The equations are used to produce graphs showing the maximum decelerations of trailers having typical dimensions, of different weights relative to the towing tractor on surfaces of different adhesion coefficients and with different types and degrees of braking on the trailers. Results measured during braking tests on tractors and trailers are given. Unbalanced trailers are shown to have a better braking performance than balanced trailers and it is therefore, recommended that trailers should be designed to carry the maximum permissible proportion of their weight on the tractor. Both over-run and power brakes on trailers are shown to provide very useful improvements in braking performance. Power brakes are preferred because of the difficulty of fitting over-run brakes on unbalanced trailers. The tractor's external hydraulics are considered to be the most convenient source of power. On-off brakes providing a fixed braking force equal to approximately 510% of the trailer maximum gross laden weight are considered to be a useful and simple means of improving existing trailers, but the development of trailer braking systems providing a braking force proportional to the tractor brake pedal force up to a maximum of approximately 2030% of the trailer maximum gross laden weight is considered to be very desirable.

M.J. Dwyer

1970-01-01T23:59:59.000Z

28

Thermal cracking in disc brakes Thomas J. Mackin *,1  

E-Print Network (OSTI)

Thermal cracking in disc brakes Thomas J. Mackin *,1 , Steven C. Noe, K.J. Ball, B.C. Bedell, D, or hub, which is connected to the wheel and axle, and an inboard and outboard braking surface

Salvaggio, Carl

29

A diagnostic system for air brakes in commercial vehicles  

E-Print Network (OSTI)

This dissertation deals with the development of a model-based diagnostic system for air brake systems that are widely used in commercial vehicles, such as trucks, tractor-trailers, buses, etc. The performance of these brake systems is sensitive...

Coimbatore Subramanian, Shankar Ram

2007-09-17T23:59:59.000Z

30

Why Brake-By-Wire (BBW) ? Advantages of BBW  

E-Print Network (OSTI)

Conventional Brake System http://www.conti-online.com #12;BBW Survey [ SKF (Motor + PGT +Ball Screw)] [ DELPHI (Motor + PGT +Ball Screw)] [Continental Teves (Motor + PGT + Roller Screw)] [Continental Teves installed at wheel] #12;Sectional Drawing of the Electromechanically Actuated Disk Brake From ITT Brake Pads Caliper

Yao, Bin

31

Airborne wear particles railway research group FEM Simulation of train disc brake behavior  

E-Print Network (OSTI)

1 Airborne wear particles railway research group FEM Simulation of train disc brake behavior a modern train disc brake with brake caliper and high speed pads. During braking, a considerable amount. A model of train brake caliper Aim The overall aim of the MSc degree project is to develop a thermoelastic

Haviland, David

32

Development of Diagnostic Algorithms for Air Brakes in Trucks  

E-Print Network (OSTI)

for di erent clearances and supply pressures : : : 6 4 Modes of operation of the air brake system [19] : : : : : : : : : : : : 11 5 A simpli ed layout of air brake system for a tractor : : : : : : : : : : 15 6 S-cam foundation brake..., causing it to rotate the slack adjuster. The slack adjuster, in turn, rotates 15 Fig. 5. A simpli ed layout of air brake system for a tractor the S-cam as it is connected to the S-cam through a splined shaft. The rotational mo- tion of the S-cam pushes...

Dhar, Sandeep

2011-10-21T23:59:59.000Z

33

Measurement and control of brake pedal feel quality in automobile manufacturing  

E-Print Network (OSTI)

Customer perception of brake pedal feel quality, as related to the perception of the brake pedal feeling soft or mushy, depends on both the customer's subjective judgment of quality and the actual build quality of the brake ...

Cerilles, Jeffrey T. (Jeffrey Thomas)

2005-01-01T23:59:59.000Z

34

E-Print Network 3.0 - air brakes Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

brakes to predominantly air disc brakes. Compare and contrast the impact of such conversions in Europe... Energy Efficiency in Heavy Vehicle Tires, Drivetrains, and ......

35

E-Print Network 3.0 - antilock brake systems Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

such as trucks, tractor... -trailers and buses. In these brake systems, compressed air is used as the energy transmitting medium to actuate... the foundation brakes mounted...

36

E-Print Network 3.0 - anti-lock braking system Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

such as trucks, tractor... -trailers and buses. In these brake systems, compressed air is used as the energy transmitting medium to actuate... the foundation brakes mounted...

37

A pressure control scheme for air brakes in commercial vehicles  

E-Print Network (OSTI)

This research is focused on developing a control scheme for regulating the pressure in the brake chamber of an air brake system found in most commercial vehicles like trucks, tractor-trailers and buses. Such a control scheme can be used...

Bowlin, Christopher Leland

2007-04-25T23:59:59.000Z

38

Many applications require brakes, for instance to decelerate or to  

E-Print Network (OSTI)

surfaces in order to generate the braking torque. Typically, actuators Statically balancing A team of TU an error occurs in the process of a robotic arm. The energy consumption and actuation force of these brakes is very high. A team of TU Delft scientists developed a method to reduce the energy consumption

39

Investigation of aerodynamic braking devices for wind turbine applications  

SciTech Connect

This report documents the selection and preliminary design of a new aerodynamic braking system for use on the stall-regulated AWT-26/27 wind turbines. The goal was to identify and design a configuration that offered improvements over the existing tip brake used by Advanced Wind Turbines, Inc. (AWT). Although the design objectives and approach of this report are specific to aerodynamic braking of AWT-26/27 turbines, many of the issues addressed in this work are applicable to a wider class of turbines. The performance trends and design choices presented in this report should be of general use to wind turbine designers who are considering alternative aerodynamic braking methods. A literature search was combined with preliminary work on device sizing, loads and mechanical design. Candidate configurations were assessed on their potential for benefits in the areas of cost, weight, aerodynamic noise, reliability and performance under icing conditions. As a result, two configurations were identified for further study: the {open_quotes}spoiler-flap{close_quotes} and the {open_quotes}flip-tip.{close_quotes} Wind tunnel experiments were conducted at Wichita State University to evaluate the performance of the candidate aerodynamic brakes on an airfoil section representative of the AWT-26/27 blades. The wind tunnel data were used to predict the braking effectiveness and deployment characteristics of the candidate devices for a wide range of design parameters. The evaluation was iterative, with mechanical design and structural analysis being conducted in parallel with the braking performance studies. The preliminary estimate of the spoiler-flap system cost was $150 less than the production AWT-26/27 tip vanes. This represents a reduction of approximately 5 % in the cost of the aerodynamic braking system. In view of the preliminary nature of the design, it would be prudent to plan for contingencies in both cost and weight.

Griffin, D.A. [R. Lynette & Associates, Seattle, WA (United States)

1997-04-01T23:59:59.000Z

40

Modeling the pneumatic relay valve of an s-cam air brake  

E-Print Network (OSTI)

Statistics indicate that defects in brake system contribute significantly to fatal crashes involving commercial vehicles. Hence there is a need for developing preventive and active safety measures for assessing the performance of an air brake system...

Vilayannur Natarajan, Shankar

2005-08-29T23:59:59.000Z

Note: This page contains sample records for the topic "brakes regenerative braking" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Evaluation of driver braking performance to an unexpected object in the roadway  

E-Print Network (OSTI)

components, specifically whether the equation accurately reflects driver and vehicle behaviors during a braking maneuver. This research evaluated the two components of the SSD equation. Four field studies were conducted that evaluated driver braking...

Picha, Dale Louis

2012-06-07T23:59:59.000Z

42

E-Print Network 3.0 - air brake association Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

... Source: Southwest Region University Transportation Center Collection: Engineering ; Energy Storage, Conversion and Utilization 2 Commercial Motor Vehicle Brake Assessment...

43

Switched reluctance motor based electromechanical brake-by-wire system  

Science Journals Connector (OSTI)

This article presents an overview of electronic braking systems using SR (Switched Reluctance) machines. The advantages presented by this structure when compared to the conventional hydraulic systems are discussed. A justification for the choice of the SRM as a valid candidate is provided, with a detailed analysis of its control structure and performance. Experimental results obtained using a digital signal processor are also presented.

S. Underwood; A. Khalil; I. Husain; H. Klode; B. Lequesne; S. Gopalakrishnan; A. Omekanda

2004-01-01T23:59:59.000Z

44

A mathematical model for air brake systems in the presence of leaks  

E-Print Network (OSTI)

model for an air brake system in the presence of leaks. Brake systems in trucks are crucial for ensuring the safety of vehicles and passengers on the roadways. Most trucks in the US are equipped with S-cam drum brake systems and they are sensitive.... Overview Air brake systems are used in heavy commercial vehicles like buses, straight trucks and combination vehicles such as tractor-trailers[1]. More than 85% of the commer- cial vehicles in the US are equipped with S-cam drum brakes[2]. Proper...

Ramaratham, Srivatsan

2008-10-10T23:59:59.000Z

45

E-Print Network 3.0 - automatic braking Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

for an Urban Electric Vehicle Summary: , Automatic Braking, Electric Vehicles, Personal Rapid Transit, Public Transit, Advanced Vehicle Control... the design modification,...

46

E-Print Network 3.0 - automotive brake materials Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

such as trucks, tractor... -trailers and buses. In these brake systems, compressed air is used as the energy transmitting medium to ... Source: Southwest Region University...

47

Modeling the pneumatic subsystem of a S-cam air brake system  

E-Print Network (OSTI)

The air brake system is one of the critical components in ensuring the safe operation of any commercial vehicle. This work is directed towards the development of a fault-free model of the pneumatic subsystem of the air brake system. This model can...

Coimbatore Subramanian, Shankar

2004-09-30T23:59:59.000Z

48

Vehicle yaw control via coordinated use of steering/braking systems  

E-Print Network (OSTI)

Vehicle yaw control via coordinated use of steering/braking systems M. Doumiati, O. Sename, J. Martinez, L. Dugard P. Gaspar, Z. Szabo, J. Bokor Gipsa-Lab UMR CNRS 5216, Control Systems Department with steer- ing/braking coordination task for vehicle yaw control. For steerability enhancement, only active

Paris-Sud XI, Université de

49

Integrated vehicle dynamics control via coordination of active front steering and rear braking  

E-Print Network (OSTI)

front steering and rear braking in a driver- assist system for vehicle yaw control. The proposed control system aims at stabilizing the vehicle while achieving a desired yaw rate. During normal driving braking could be used for yaw rate control. An active suspension system, by controlling the wheel load

Paris-Sud XI, Université de

50

Fault tolerant control of automatically controlled vehicles in response to brake system failures  

E-Print Network (OSTI)

in the brake system is vital. In this thesis, nonlinear failure detection filters are used for fault detection of sensors and actuators in a class of nonlinear systems. In this thesis, the effects of brake system failures in an AHS where the vehicle steering...

Hsien, Li-Wei

2012-06-07T23:59:59.000Z

51

Plant and Environment Interactions Arsenic Accumulation in the Hyperaccumulator Chinese Brake and Its Utilization  

E-Print Network (OSTI)

in a greenhouse. At recently, however, has Chinese brake (Pteris vittata L.)harvest, the Chinese brake produced soils (0.47­7.56 mg As kg 1 ),concentration to water-soluble arsenic in soil) of 1450 and a transloca to remediate arsenic contaminated soils. schullat, 2000), soil arsenic concentration (Jiang and Singh, 1994

Ma, Lena

52

Microsoft PowerPoint - Real-Time Dynamic Brake Assessment poster.ppt [Compatibility Mode]  

NLE Websites -- All DOE Office Websites (Extended Search)

Dynamic Brake Assessment Dynamic Brake Assessment Purpose Conduct a proof-of-concept test to examine the feasibility of developing an on-board system to assess a vehicle's ability to stop based on typical low-pressure in-service braking events. Partnerships H.T. Hackney Company MGM Brakes Overview Funded through the Federal Motor Carrier Safety Administration's Vehicle and Roadside Operations Division Concept stemming from on the Department of Energy's Medium Truck Duty Cycle research as well as previous research conducted for the National Highway Transportation Safety Administration. Signals to be collected Real-time brake application pressure Vehicle speed and acceleration GPS location and grade information Vehicle weight (current load) Engine parameters such as RPM and torque To be conducted October 2010 -

53

Wind turbine trailing-edge aerodynamic brake design  

SciTech Connect

This report describes the design of a centrifugally actuated aerodynamic-overspeed device for a horizontal-axis wind turbine. The device will meet the following criteria; (1) It will be effective for airfoil angles of attack 0{degrees} to 45{degrees}. (2) It will be stowed inside the blade profile prior to deployment. (3) It will be capable of offsetting the positive torque produced by the overall blade. (4) Hinge moments will be minimized to lower actuator loads and cost. (5) It will be evaluated as a potential power modulating active rotor-control system. A literature review of aerodynamic braking devices was conducted. Information from the literature review was used to conceptualize the most effective devices for subsequent testing and design. Wind-tunnel test data for several braking devices are presented in this report. Using the data for the most promising configuration, a preliminary design was developed for a MICON 65/13 wind turbine with Phoenix 7.9-m rotor blades.

Quandt, G.

1996-01-01T23:59:59.000Z

54

Effect of Nanoclay Reinforcement on the Friction Braking Performance of Hybrid Phenolic Friction Composites  

Science Journals Connector (OSTI)

Friction composite formulation consisting of decreasing nanoclay/lapinus fibres content, increasing graphite/aramid fibres ... is adopted for evaluating braking performance. The nanoclay content (?2.25wt.%) enha...

Tej Singh; Amar Patnaik

2013-03-01T23:59:59.000Z

55

Achieving Consistent Maximum Brake Torque with Varied Injection Timing in a DI Diesel Engine  

E-Print Network (OSTI)

, the characteristics of combustion for swept injection timings along the maximum brake torque plateau are determined. The research is conducted by varying injection timing at constant engine speed and load while measuring engine emissions and in-cylinder pressure...

Kroeger, Timothy H

2013-09-19T23:59:59.000Z

56

Low frequency vibrations in disc brakes at high car speed. Part II: mathematical model and simulation  

Science Journals Connector (OSTI)

In the present paper, a mathematical model is constructed for judder in disc brakes at high speed. Vehicle suspension is modelled by means of finite elements. Vibration modes and frequencies are derived that can be used in the classification of modes in main and secondary based in the relative disc-calliper displacement; the finite element model is also used as well as in forced-response analysis. Brake pads are defined through the friction coefficient as a function of speed, pressure, and temperature, in light of which one may consider the various braking conditions and types of pad. Since the line of reasoning introduces equivalent-damping terms into the equations of dynamics, these equations cannot be uncoupled by means of modal transformation. Two techniques are proposed for the solution of the problem. One of these consists in an examination of the 'main-modes', while the other is based on direct integration of the quasi-uncoupled equations. A computer program has been implemented which allows the simulation of this kind of judder with different pads, brake systems and braking conditions.

R. Aviles; G. Hennequet; E. Amezua; J. Vallejo

1995-01-01T23:59:59.000Z

57

Compliant mechanism road bicycle brake: a rigid-body replacement case study  

SciTech Connect

The design of high-performance bicycle brakes is complicated by the competing design objectives of increased performance and low weight. But this challenge also provides a good case study to demonstrate the design of compliant mechanisms to replace current rigid-link mechanisms. This paper briefly reviews current road brake designs, demonstrates the use of rigid-body replacement synthesis to design a compliant mechanism, and illustrates the combination of compliant mechanism design tools. The resulting concept was generated from the modified dual-pivot brake design and is a partially compliant mechanism where one pin has the dual role of a joint and a mounting pin. The pseudo-rigid-body model, finite element analysis, and optimization algorithms are used to generate design dimensions, and designs are considered for both titanium and E-glass flexures. The resulting design has the potential of reducing the part count and overall weight while maintaining a performance similar to the benchmark.

Olsen, Brian M [Los Alamos National Laboratory; Howell, Larry L [NON LANL; Magleby, Spencer P [NON LANL

2011-01-19T23:59:59.000Z

58

Genetic programming approach to predict torque and brake specific fuel consumption of a gasoline engine  

Science Journals Connector (OSTI)

This study presents genetic programming (GP) based model to predict the torque and brake specific fuel consumption a gasoline engine in terms of spark advance, throttle position and engine speed. The objective of this study is to develop an alternative robust formulations based on experimental data and to verify the use of GP for generating the formulations for gasoline engine torque and brake specific fuel consumption. Experimental studies were completed to obtain training and testing data. Of all 81 data sets, the training and testing sets consisted of randomly selected 63 and 18 sets, respectively. Considerable good performance was achieved in predicting gasoline engine torque and brake specific fuel consumption by using GP. The performance of accuracies of proposed GP models are quite satisfactory (R2=0.9878 for gasoline engine torque and R2=0.9744 for gasoline engine brake specific fuel consumption). The prediction of proposed GP models were compared to those of the neural network modeling, and strictly good agreement was observed between the two predictions. The proposed GP formulation is quite accurate, fast and practical.

Necla Togun; Sedat Baysec

2010-01-01T23:59:59.000Z

59

Real-Time Dynamic Brake Assessment Conduct a proof-of-concept  

E-Print Network (OSTI)

Real-Time Dynamic Brake Assessment Purpose Conduct a proof-of-concept test to examine the Federal Motor Carrier Safety Administration's Vehicle and Roadside Operations Division Concept stemming conducted for the National Highway Transportation Safety Administration. Signals to be collected Real

60

Mechanically versus electro-magnetically braked cycle ergometer: performance and energy cost of the Wingate Anaerobic Test  

Science Journals Connector (OSTI)

Performance and metabolic profiles of the Wingate Anaerobic Test (WAnT) were compared between a mechanically resisted (ME) and an electro-magnetically braked (EE) cycle ergometer. Fifteen healthy subjects (24....

D. Micklewright; A. Alkhatib; R. Beneke

2006-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "brakes regenerative braking" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

The effectiveness of using the calculated braking current for longitudinal differential protection of 110 - 750 kV shunt reactors  

SciTech Connect

The use of the function of effective current braking of the longitudinal differential protection of shunt reactors to offset current surges, which enables the sensitivity of differential protection to be increased when there are short circuits with low damage currents, is considered. It is shown that the use of the calculated braking characteristic enables the reliability of offset protection from transients to be increased when the reactor is connected, which is accompanied by the flow of asymmetric currents containing an aperiodic component.

Vdovin, S. A. [JSC 'E and E' (Russian Federation); Shalimov, A. S. [LLC Selekt Co. (Russian Federation)

2013-05-15T23:59:59.000Z

62

Nonlinear analysis of time series of vibration data from a friction brake: SSA, PCA, and MFDFA  

E-Print Network (OSTI)

We use the methodology of singular spectrum analysis (SSA), principal component analysis (PCA), and multi-fractal detrended fluctuation analysis (MFDFA), for investigating characteristics of vibration time series data from a friction brake. SSA and PCA are used to study the long time-scale characteristics of the time series. MFDFA is applied for investigating all time scales up to the smallest recorded one. It turns out that the majority of the long time-scale dynamics, that is presumably dominated by the structural dynamics of the brake system, is dominated by very few active dimensions only and can well be understood in terms of low dimensional chaotic attractors. The multi-fractal analysis shows that the fast dynamical processes originating in the friction interface are in turn truly multi-scale in nature.

Nikolay K. Vitanov; Norbert P. Hoffmann; Boris Wernitz

2014-10-23T23:59:59.000Z

63

DOES MAGNETIC-FIELD-ROTATION MISALIGNMENT SOLVE THE MAGNETIC BRAKING CATASTROPHE IN PROTOSTELLAR DISK FORMATION?  

SciTech Connect

Stars form in dense cores of molecular clouds that are observed to be significantly magnetized. In the simplest case of a laminar (non-turbulent) core with the magnetic field aligned with the rotation axis, both analytic considerations and numerical simulations have shown that the formation of a large, 10{sup 2} AU scale, rotationally supported protostellar disk is suppressed by magnetic braking in the ideal MHD limit for a realistic level of core magnetization. This theoretical difficulty in forming protostellar disks is termed the ''magnetic braking catastrophe''. A possible resolution to this problem, proposed by Hennebelle and Ciardi and Joos et al., is that misalignment between the magnetic field and rotation axis may weaken the magnetic braking enough to enable disk formation. We evaluate this possibility quantitatively through numerical simulations. We confirm the basic result of Joos et al. that the misalignment is indeed conducive to disk formation. In relatively weakly magnetized cores with dimensionless mass-to-flux ratio {approx}> 4, it enabled the formation of rotationally supported disks that would otherwise be suppressed if the magnetic field and rotation axis are aligned. For more strongly magnetized cores, disk formation remains suppressed, however, even for the maximum tilt angle of 90 Degree-Sign . If dense cores are as strongly magnetized as indicated by OH Zeeman observations (with a mean dimensionless mass-to-flux ratio {approx}2), it would be difficult for the misalignment alone to enable disk formation in the majority of them. We conclude that, while beneficial to disk formation, especially for the relatively weak field case, misalignment does not completely solve the problem of catastrophic magnetic braking in general.

Li Zhiyun [Astronomy Department, University of Virginia, Charlottesville, VA (United States); Krasnopolsky, Ruben; Shang, Hsien [Academia Sinica, Theoretical Institute for Advanced Research in Astrophysics, Taipei, Taiwan (China)

2013-09-01T23:59:59.000Z

64

THE BRAKING INDEX OF PSR J1734-3333 AND THE MAGNETAR POPULATION  

SciTech Connect

PSR J1734-3333 is a radio pulsar rotating with a period P = 1.17 s and slowing down with a period derivative P-dot =2.28x10{sup -12}, the third largest among rotation-powered pulsars. These properties are midway between those of normal rotation-powered pulsars and magnetars, two populations of neutron stars that are notably different in their emission properties. Here we report on the measurement of the second period derivative of the rotation of PSR J1734-3333 and calculate a braking index n = 0.9 {+-} 0.2. This value is well below 3, the value expected for an electromagnetic braking due to a constant magnetic dipole, and indicates that this pulsar may soon have the rotational properties of a magnetar. While there are several mechanisms that could lead to such a low braking index, we discuss this observation, together with the properties exhibited by some other high- P-dot rotation-powered pulsars, and interpret it as evidence of a possible evolutionary route for magnetars through a radio-pulsar phase, supporting a unified description of the two classes of the object.

Espinoza, C. M.; Lyne, A. G. [Jodrell Bank Centre for Astrophysics, School of Physics and Astronomy, University of Manchester, Manchester M13 9PL (United Kingdom); Kramer, M. [MPI fuer Radioastronomie, Auf dem Huegel 69, 53121 Bonn (Germany); Manchester, R. N. [Australia Telescope National Facility, CSIRO Astronomy and Space Science, Epping, NSW 1710 (Australia); Kaspi, V. M., E-mail: cme@jb.man.ac.uk [Department of Physics, McGill University, Montreal, QC H3A 2T8 (Canada)

2011-11-01T23:59:59.000Z

65

Probability of failure of the waste hoist brake system at the Waste Isolation Pilot Plant (WIPP)  

SciTech Connect

In its most recent report on the annual probability of failure of the waste hoist brake system at the Waste Isolation Pilot Plant (WIPP), the annual failure rate is calculated to be 1.3E({minus}7)(1/yr), rounded off from 1.32E({minus}7). A calculation by the Environmental Evaluation Group (EEG) produces a result that is about 4% higher, namely 1.37E({minus}7)(1/yr). The difference is due to a minor error in the US Department of Energy (DOE) calculations in the Westinghouse 1996 report. WIPP`s hoist safety relies on a braking system consisting of a number of components including two crucial valves. The failure rate of the system needs to be recalculated periodically to accommodate new information on component failure, changes in maintenance and inspection schedules, occasional incidents such as a hoist traveling out-of-control, either up or down, and changes in the design of the brake system. This report examines DOE`s last two reports on the redesigned waste hoist system. In its calculations, the DOE has accepted one EEG recommendation and is using more current information about the component failures rates, the Nonelectronic Parts Reliability Data (NPRD). However, the DOE calculations fail to include the data uncertainties which are described in detail in the NPRD reports. The US Nuclear Regulatory Commission recommended that a system evaluation include mean estimates of component failure rates and take into account the potential uncertainties that exist so that an estimate can be made on the confidence level to be ascribed to the quantitative results. EEG has made this suggestion previously and the DOE has indicated why it does not accept the NRC recommendation. Hence, this EEG report illustrates the importance of including data uncertainty using a simple statistical example.

Greenfield, M.A. [Univ. of California, Los Angeles, CA (United States); Sargent, T.J. [Univ. of Chicago, IL (United States)]|[Stanford Univ., CA (United States). Hoover Institution

1998-01-01T23:59:59.000Z

66

Thermo-mechanical characterization of nano filled and fiber reinforced brake friction materials  

Science Journals Connector (OSTI)

Brake friction materials filled with multiwalled carbon nanotubes (MWCNT) and nanoclay have been fabricated and characterize for thermo-mechanical properties. Thermo gravimetric analysis (TGA) show that the stability of the friction composites increased with increase in MWCNT and nanoclay contents. Dynamic mechanical analysis (DMA) of the composite have been carried out to characterize the storage modulus (E?) loss modulus (E?) and damping factor (Tan ?) as a function of temperature. The storage and loss modulus show a maxima at lower content of MWCNT and nanoclay.

2013-01-01T23:59:59.000Z

67

Solar tracker motor having a fixed caliper and a translating caliper each with an electromagnetic brake system  

DOE Patents (OSTI)

Concepts and technologies described herein provide for an accurate and cost-effective method for rotating a solar array disk for tracking the movement of the sun. According to various aspects, a motor includes a fixed caliper and a translating caliper positioned adjacent to one another. Electromagnetically controlled brakes on the translating caliper grip the solar array disk while adjacent, but spaced apart, electromagnets on the fixed caliper and the translating caliper are energized to create an attractive force that pulls the translating caliper with the solar array disk toward the fixed caliper. After reaching the fixed caliper, brakes on the fixed caliper are engaged with the disk, brakes on the translating caliper are released from the disk, and the translating caliper is pushed back to the starting location where the process repeats until the desired rotation is completed.

Rau, Scott James

2013-01-29T23:59:59.000Z

68

Fault detection and diagnosis within a wind turbine mechanical braking system using condition monitoring  

Science Journals Connector (OSTI)

Renewable energy sources have a key role to play in the global energy mix as a means of reducing the impact of energy production on climate change. Wind energy is the most developed of all renewable energy technologies with more than 200GW of globally installed capacity as of 2011. Analyses of wind farm maintenance costs show that up to 40% of the outlay is related to unexpected component failures that lead to costly unscheduled amendments. Wind farm operators are constantly looking for new technological developments in condition monitoring that can contribute to the minimisation of wind turbine maintenance expenditure. Early fault detection through condition monitoring can help prevent major breakdowns as well as significantly decrease associated costs. Moreover it enables the optimisation of maintenance schedules, reduces downtime, increases asset availability and enhances safety and operational reliability. Faults in the braking system are of particularly concern since they can result in catastrophic failure of the wind turbine. The present study investigates online condition monitoring based on voltages and currents for mechanical wind turbine brake system fault diagnosis.

M. Entezami; S. Hillmansen; P. Weston; M.Ph. Papaelias

2012-01-01T23:59:59.000Z

69

Rotational evolution of the Crab pulsar in the wind braking model  

E-Print Network (OSTI)

The pulsar wind model is updated by considering the effect of particle density and pulsar death. It can describe both the short term and long term rotational evolution of pulsars consistently. It is applied to model the rotational evolution of the Crab pulsar. The pulsar is spun down by a combination of magnetic dipole radiation and particle wind. The parameters of the Crab pulsar, including magnetic field, inclination angle, and particle density are calculated. The particle density in acceleration region is about 10^3 times the Goldreich-Julian charge density. The lower braking index between glitches is due to a larger particle density. This may be glitch induced magnetospheric activities in normal pulsars. Evolution of braking index and the Crab pulsar in P-Pdot diagram are calculated. The Crab pulsar will evolve from magnetic dipole radiation dominated case towards particle wind dominated case. Considering the effect of pulsar "death", the Crab pulsar (and other normal pulsars) will not evolve to the clust...

Kou, F F

2015-01-01T23:59:59.000Z

70

Use of an auditory signal in a rear-end collision warning system: effects on braking force and reaction time  

E-Print Network (OSTI)

driving game. Superimposed on the game screen was the image of a car which appeared to the driver to be ahead of him/her. The image enlarged in size, appearing to be a car applying its brakes. The participant was instructed to react as he would in a real...

Hopkins, Jennifer Susan

1995-01-01T23:59:59.000Z

71

CityCarControl : an electric vehicle drive-by-wire solution for distributed steering, braking and throttle control  

E-Print Network (OSTI)

In this paper, we propose CityCarControl, a system to manage the steering, braking, and throttle of a new class of intra-city electric vehicles. These vehicles have a focus on extreme light-weight and a small parking ...

Brown, Thomas B., M. Eng. Massachusetts Institute of Technology

2010-01-01T23:59:59.000Z

72

A MODEL OF MAGNETIC BRAKING OF SOLAR ROTATION THAT SATISFIES OBSERVATIONAL CONSTRAINTS  

SciTech Connect

The model of magnetic braking of solar rotation considered by Charbonneau and MacGregor has been modified so that it is able to reproduce for the first time the rotational evolution of both the fastest and slowest rotators among solar-type stars in open clusters of different ages, without coming into conflict with other observational constraints, such as the time evolution of the atmospheric Li abundance in solar twins and the thinness of the solar tachocline. This new model assumes that rotation-driven turbulent diffusion, which is thought to amplify the viscosity and magnetic diffusivity in stellar radiative zones, is strongly anisotropic with the horizontal components of the transport coefficients strongly dominating over those in the vertical direction. Also taken into account is the poloidal field decay that helps to confine the width of the tachocline at the solar age. The model's properties are investigated by numerically solving the azimuthal components of the coupled momentum and magnetic induction equations in two dimensions using a finite element method.

Denissenkov, Pavel A., E-mail: pavel.denisenkov@gmail.co [Department of Physics and Astronomy, University of Victoria, P.O. Box 3055, Victoria, B.C., V8W 3P6 (Canada)

2010-08-10T23:59:59.000Z

73

Vehicle System Dynamics, Vol. 26, No.4, October 1996, pp.301-320. Traction/Braking Force Distribution for Optimal Longitudinal  

E-Print Network (OSTI)

as the desired level of vehicle yaw motion, and the control system was designed to follow the yaw motion commandVehicle System Dynamics, Vol. 26, No.4, October 1996, pp.301-320. Traction/Braking Force in the past twenty years through the use of electronic devices. Four-wheel-steering (4WS) systems have been

Peng, Huei

74

Regenerative Braking for an Electric Vehicle Using Ultracapacitors and a Buck-Boost Converter  

E-Print Network (OSTI)

, similar in shape and size to a Chevrolet S-10. This vehicle was already converted to an electric car

Catholic University of Chile (Universidad Católica de Chile)

75

An analysis of the annual probability of failure of the waste hoist brake system at the Waste Isolation Pilot Plant (WIPP)  

SciTech Connect

The Environmental Evaluation Group (EEG) previously analyzed the probability of a catastrophic accident in the waste hoist of the Waste Isolation Pilot Plant (WIPP) and published the results in Greenfield (1990; EEG-44) and Greenfield and Sargent (1993; EEG-53). The most significant safety element in the waste hoist is the hydraulic brake system, whose possible failure was identified in these studies as the most important contributor in accident scenarios. Westinghouse Electric Corporation, Waste Isolation Division has calculated the probability of an accident involving the brake system based on studies utilizing extensive fault tree analyses. This analysis conducted for the U.S. Department of Energy (DOE) used point estimates to describe the probability of failure and includes failure rates for the various components comprising the brake system. An additional controlling factor in the DOE calculations is the mode of operation of the brake system. This factor enters for the following reason. The basic failure rate per annum of any individual element is called the Event Probability (EP), and is expressed as the probability of failure per annum. The EP in turn is the product of two factors. One is the {open_quotes}reported{close_quotes} failure rate, usually expressed as the probability of failure per hour and the other is the expected number of hours that the element is in use, called the {open_quotes}mission time{close_quotes}. In many instances the {open_quotes}mission time{close_quotes} will be the number of operating hours of the brake system per annum. However since the operation of the waste hoist system includes regular {open_quotes}reoperational check{close_quotes} tests, the {open_quotes}mission time{close_quotes} for standby components is reduced in accordance with the specifics of the operational time table.

Greenfield, M.A. [Univ. of California, Los Angeles, CA (United States); Sargent, T.J.

1995-11-01T23:59:59.000Z

76

Design and test of a wet type helium turbo-expander with an alternator as a brake  

SciTech Connect

A wet type helium turbo-expander with expected adiabatic efficiency of 70% at inlet pressure, temperature, and outlet pressure of 1.3 MPa, 6.0 K, and 0.2 MPa, respectively, has been developed. An alternator is adopted as a brake where a permanent magnet is held in the turbine shaft. And a self-acting gas bearing is used at thrust and journal bearings. An electromagnet supports thrust bearing to lift up the thrust disk when initiating operation. Design mass flow rate of the turbine is determined to be 60 g/s, corresponding to the JT mass flow rate in the existing helium liquefier/refrigerator. In the cryogenic performance test, the turbine had increased helium liquefaction rate by four times larger than the liquefaction rate without turbine operation.

Kato, T.; Miyake, A.; Kawano, K.; Hamada, K.; Hiyama, T.; Iwamoto, S.; Ebisu, H.; Tsuji, H. [Japan Atomic Energy Research Institute, Ibaraki-ken (Japan); Saji, N.; Kaneko, Y. [Ishikawajima-Harima Heavy Industries Co. Ltd., Tokyo (Japan)] [and others

1994-12-31T23:59:59.000Z

77

Lightweight pressure vessels and unitized regenerative fuel cells  

SciTech Connect

Energy storage systems have been designed using lightweight pressure vessels with unitized regenerative fuel cells (URFCs). The vessels provide a means of storing reactant gases required for URFCs; they use lightweight bladder liners that act as inflatable mandrels for composite overwrap and provide a permeation barrier. URFC systems have been designed for zero emission vehicles (ZEVs); they are cost competitive with primary FC powered vehicles that operate on H/air with capacitors or batteries for power peaking and regenerative braking. URFCs are capable of regenerative braking via electrolysis and power peaking using low volume/low pressure accumulated oxygen for supercharging the power stack. URFC ZEVs can be safely and rapidly (<5 min.) refueled using home electrolysis units. Reversible operation of cell membrane catalyst is feasible without significant degradation. Such systems would have a rechargeable specific energy > 400 Wh/kg.

Mitlitsky, F.; Myers, B.; Weisberg, A.H.

1996-09-06T23:59:59.000Z

78

Upper and lower limits on the Crab pulsar's astrophysical parameters set from gravitational wave observations by LIGO: braking index and energy considerations  

E-Print Network (OSTI)

The Laser Interferometer Gravitational Observatory (LIGO) has recently reached the end of its fifth science run (S5), having collected more than a year worth of data. Analysis of the data is still ongoing but a positive detection of gravitational waves, while possible, is not realistically expected for most likely sources. This is particularly true for what concerns gravitational waves from known pulsars. In fact, even under the most optimistic (and not very realistic) assumption that all the pulsar's observed spin-down is due to gravitational waves, the gravitational wave strain at earth from all the known isolated pulsars (with the only notable exception of the Crab pulsar) would not be strong enough to be detectable by existing detectors. By August 2006, LIGO had produced enough data for a coherent integration capable to extract signal from noise that was weaker than the one expected from the Crab pulsar's spin-down limit. No signal was detected, but beating the spin-down limit is a considerable achievement for the LIGO Scientific Collaboration (LSC). It is customary to translate the upper limit on strain from a pulsar into a more astrophysically significant upper limit on ellipticity. Once the spin-down limit has been beaten, it is possible to release the constraint that all the spin-down is due to gravitational wave emission. A more complete model with diverse braking mechanisms can be used to set limits on several astrophysical parameters of the pulsar. This paper shows possible values of such parameters for the Crab pulsar given the current limit on gravitational waves from this neutron star.

Giovanni Santostasi

2008-07-16T23:59:59.000Z

79

Performance of Networked Control Systems under Sporadic Feedback  

E-Print Network (OSTI)

Regenerative Braking power inverter storage Micro-Grid Renewable Generation PHEV Smart Grid - Distributed

Lemmon, Michael

80

Daimler's SuperTruck Program; 50% Brake Thermal Efficiency  

Energy.gov (U.S. Department of Energy (DOE))

Presents highlights of engine and vehicle advances made, and progress towards achieving aggressive goals

Note: This page contains sample records for the topic "brakes regenerative braking" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

Emergency Braking: A Study of Network and Application Performance  

E-Print Network (OSTI)

of such applications as a function of the market penetration rate, showing that even cars that are not equipped interact? What is the market penetration rate that makes EEBL ben- efits measurable? Do non

Lo Cigno, Renato Antonio

82

ORNL/Pub40701 Heavy and Overweight Vehicle Brake  

E-Print Network (OSTI)

, and International Nuclear Information System (INIS) representatives from the following source. Office of Scientific

83

Washington, D.C. and Indiana: Allison Hybrid Technology Achieves...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

system, which features regenerative braking enabled by two motorgenerator electric machines within the hybrid system. In addition to WMATA's buses, Allison's hybrid bus...

84

AVCEM: Advanced Vehicle Cost and Energy Use Model. Overview of AVCEM  

E-Print Network (OSTI)

regenerative braking, battery thermal management, and fuel-the requirements of battery thermal management, and thebattery tray, tie downs, electrical auxiliaries (such as bus bars), thermal

Delucchi, Mark

2005-01-01T23:59:59.000Z

85

AVCEM: Advanced-Vehicle Cost and Energy Use Model  

E-Print Network (OSTI)

regenerative braking, battery thermal management, and fuel-the requirements of battery thermal management, and thebattery tray, tie downs, electrical auxiliaries (such as bus bars), thermal

Delucchi, Mark

2005-01-01T23:59:59.000Z

86

Stop/Start: Overview  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

regenerative braking, energy from the wheels turns the electric generator, creating electricity. Using energy from the wheels to turn the generator slows the vehicle. Go to next...

87

Regenerative catalytic oxidation  

SciTech Connect

Currently Regenerative Thermal Oxidizers (R.T.O.`s) are an accepted technology for the control of volatile organic compounds (VOC`s) and hazardous air pollutants (HAP`s). This control technology, when introduced, offered substantial reductions in operating costs, especially auxiliary fuel requirements when compared to existing control technologies such as recuperative thermal and recuperative catalytic oxidizers. While these savings still exist, there is a demand for control of new and/or hybrid technologies, one of which is Regenerative Catalytic Oxidizers (R.C.O.`s). This paper will explore the development of regenerative catalytic oxidation from the theoretical stage through pilot testing through a commercial installation. The operating cost of R.C.O.`s will be compared to R.T.O.`s to verify the savings that are achievable through the use of regenerative catalytic oxidation. In the development of this technology, which is a combination of two (2) existing technologies, R.T.O.`s and catalysis, a second hybrid technology was explored and pilot tested. This is a combination R.C.O. for VOC and HAP control and simultaneous SCR (Selective Catalytic Reduction) for NOx (Oxides of Nitrogen) control. Based on the pilot and full scale testing, both regenerative catalytic oxidizers and systems which combine R.C.O. with SCR for both VOC and NOx reduction are economically viable and are in fact commercially available. 6 figs., 2 tabs.

Gribbon, S.T. [Engelhard Process Emission Systems, South Lyon, MI (United States)

1996-12-31T23:59:59.000Z

88

Regenerative feedback resonant circuit  

DOE Patents (OSTI)

A regenerative feedback resonant circuit for measuring a transient response in a loop is disclosed. The circuit includes an amplifier for generating a signal in the loop. The circuit further includes a resonator having a resonant cavity and a material located within the cavity. The signal sent into the resonator produces a resonant frequency. A variation of the resonant frequency due to perturbations in electromagnetic properties of the material is measured.

Jones, A. Mark; Kelly, James F.; McCloy, John S.; McMakin, Douglas L.

2014-09-02T23:59:59.000Z

89

Regenerative nanomedicines: an emerging investment prospective?  

Science Journals Connector (OSTI)

...application of nanotechnologies to the field of regenerative medicine offers the potential...regenerative medicine products rather than nanotechnology as a platform...application of nanotechnology to regenerative medicine may offer enormous...

2010-01-01T23:59:59.000Z

90

Translation and commercialization of regenerative medicines  

Science Journals Connector (OSTI)

...issue 'Translation and commercialization of regenerative medicines...Prescott Translation and commercialization of regenerative medicines...accelerate the banking process and facilitate appropriate...Supplement Translation and commercialization of regenerative medicines...

2010-01-01T23:59:59.000Z

91

Project Profile: Regenerative Carbonate-Based Thermochemical...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Regenerative Carbonate-Based Thermochemical Energy Storage System for Concentrating Solar Power Project Profile: Regenerative Carbonate-Based Thermochemical Energy Storage System...

92

Translation and commercialization of regenerative medicines  

Science Journals Connector (OSTI)

...applying the latest nanotechnologies to enhance the regenerative...impact of regenerative medicine is not just as a new...commercialization of regenerative medicines. References Abdulrazzak...extracellular matrix through nanotechnology. J. R. Soc. Interface...2010 Regenerative medicine: the emergence of...

2010-01-01T23:59:59.000Z

93

Regenerative switching CMOS system  

DOE Patents (OSTI)

Complementary Metal Oxide Semiconductor (CMOS) Schottky barrier Field Effect Transistor systems, which are a series combination of N and P-Channel MOSFETS, in which Source Schottky barrier junctions of the N and P-Channel Schottky barrier MOSFETS are electrically interconnected, (rather than the Drains as in conventional diffused junction CMOS), which Schottky barrier MOSFET system demonstrates Regenerative Inverting Switching Characteristics in use are disclosed. Both the N and P-Channel Schottky barrier MOSFET devices are unique in that they provide operational Drain Current vs. Drain to Source voltage as a function of Gate voltage only where the polarities of the Drain voltage and Gate voltage are opposite, referenced to the Source as a common terminal, and where the polarity of the voltage applied to the Gate is appropriate to cause Channel inversion. Experimentally derived results which demonstrate and verify the operation of N and P-Channel Schottky barrier MOSFETS actually fabricated on P and N-type Silicon respectively, by a common procedure using vacuum deposited Chromium as a Schottky barrier forming metal, are also provided. 14 figs.

Welch, J.D.

1998-06-02T23:59:59.000Z

94

Laser system using regenerative amplifier  

DOE Patents (OSTI)

High energy laser system using a regenerative amplifier, which relaxes all constraints on laser components other than the intrinsic damage level of matter, so as to enable use of available laser system components. This can be accomplished by use of segmented components, spatial filters, at least one amplifier using solid state or gaseous media, and separated reflector members providing a long round trip time through the regenerative cavity, thereby allowing slower switching and adequate time to clear the spatial filters, etc. The laser system simplifies component requirements and reduces component cost while providing high energy output.

Emmett, John L. [Pleasanton, CA

1980-03-04T23:59:59.000Z

95

Regenerative Medicine: Learning from Past Examples  

E-Print Network (OSTI)

Regenerative medicine products have characteristically shown great therapeutic potential, but limited market success. Learning from the past attempts at capturing value is critical for new and emerging regenerative medicine ...

Couto, Daniela S.

96

Design and Simulation of Air Cooled Battery Thermal Management System Using Thermoelectric for a Hybrid Electric Bus  

Science Journals Connector (OSTI)

Dynamic and electric parameters of HEVs and EVs such as acceleration, regenerative braking and battery charging/discharging depend on the battery system performance. Excessive or uneven temperature rise in a modu...

Vahid Esfahanian; Saber Ahmadi Renani

2013-01-01T23:59:59.000Z

97

Vibration Isolation of a Locomotive Mounted Energy Storage Flywheel  

E-Print Network (OSTI)

Utilizing flywheels to store and reuse energy from regenerative braking on locomotives is a new technology being developed in the Vibration Control and Electromechanics Lab at Texas A&M. This thesis focuses on the motion analysis of a locomotive...

Zhang, Xiaohua

2011-02-22T23:59:59.000Z

98

The influence of the magnetic topology on the braking of sun-like stars  

E-Print Network (OSTI)

Stellar winds are thought to be the main process responsible for the spin down of main-sequence stars. The extraction of angular momentum by a magnetized wind has been studied for decades, leading to several formulations for the resulting torque. However, previous studies generally consider simple dipole or split monopole stellar magnetic topologies. Here we consider in addition to a dipolar stellar magnetic field, both quadrupolar and octupolar configurations, while also varying the rotation rate and the magnetic field strength. 60 simulations made with a 2.5D, cylindrical and axisymmetric set-up and computed with the PLUTO code were used to find torque formulations for each topology. We further succeed to give a unique law that fits the data for every topology by formulating the torque in terms of the amount of open magnetic flux in the wind. We also show that our formulation can be applied to even more realistic magnetic topologies, with examples of the Sun in its minimum and maximum phase as observed at t...

Rville, Victor; Matt, Sean; Strugarek, Antoine; Pinto, Rui

2014-01-01T23:59:59.000Z

99

ORNL/TM-2011/479 Real-Time Dynamic Brake Assessment  

E-Print Network (OSTI)

.............................................................................................................................1 1.1 BACKGROUND...............................................................................................................6 2.2.1 Test Vehicle and Sensors

100

Interface design for an aircraft thrust and braking indicator/advisor  

Science Journals Connector (OSTI)

Recent advances in the development of aircraft landing and takeoff performance monitoring systems (Pinder, 2003) have shown the feasibility of a cockpit instrument that could aid significantly in the decision making process during the most critical phases ... Keywords: auditory interfaces, aviation, bimodal user interfaces, cockpit user interfaces

S. D. Pinder; D. N. Bristow; T. C. Davies

2006-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "brakes regenerative braking" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

A performance evaluation of an automotive magnetorheological brake design with a sliding mode controller  

E-Print Network (OSTI)

industries due to its potential to improve vehicle perfor- mance, safety and cost. The ``x'' in x Engineering, University of Victoria, 3800 Finnerty Road, P.O. Box 3055 STN CSC, Victoria, BC, Canada V8W 3P6 flow and heat transfer analysis. The performance of the MRB in a vehicle was studied using a quarter

Park, Edward

102

Combined fast valving and braking resistor application to improve transient stability  

E-Print Network (OSTI)

. In many cases, power plants and load centers are connected through long transmission lines. Furthermore, the development over the years of improved methods of' cooling generators and of designing low pressure turbine stages have resulted in a reduction... power input to the turbogenerator is measured with a reheater pressure transducer and the electrica1 power output from the generator is measured with a kw transducer. When the 10 0 V 0 C4 4 0) f-4 H m Cd . A ) N Cd VII &D '0 (U Ctd cd cdm OE...

Chen, Jen-Yeu Thomas

1982-01-01T23:59:59.000Z

103

A study of factors affecting foot movement time in a braking maneuver  

E-Print Network (OSTI)

; in the stationary vehicle portion of the study, they were not. Mean foot MT for both genders over all conditions were 0.28 seconds for women and 0.22 seconds for men. For older drivers, over all conditions, the mean foot MT was 0.25 seconds, and, for the younger...

Berman, Andrea Helene

2012-06-07T23:59:59.000Z

104

Injection Timing Effects on Brake Fuel Conversion Efficiency and Engine System's Respones  

E-Print Network (OSTI)

timing effects on the combustion processes, engine efficiency, and the engine system's responses. The engine in the study is a medium duty diesel engine (capable of meeting US EPA Tier III off road emission standards) equipped with common rail direct...

McLean, James Elliott

2011-10-21T23:59:59.000Z

105

Author's personal copy What can the braking indices tell us about the nature of pulsars?  

E-Print Network (OSTI)

additional torques by particle outflow or accretion disk, changes in inclination angle or magnetic field's personal copy pole radiation and relativistic particle flow/wind (Dar, 1999; Allen and Horvath, 2000; Xu and Qiao, 2001; Wu et al., 2003; Contopoulos et al., 2006), the models with changing inclination angles (e

Xu, Ren-Xin

106

To brake or to accelerate? Safety effects of combined speed and red light cameras  

Science Journals Connector (OSTI)

AbstractIntroduction The present study evaluates the traffic safety effect of combined speed and red light cameras at 253 signalized intersections in Flanders, Belgium that were installed between 2002 and 2007. Method The adopted approach is a before-and-after study with control for the trend. Results The analyses showed a non-significant increase of 5% in the number of injury crashes. An almost significant decrease of 14% was found for the more severe crashes. The number of rear-end crashes turned out to have increased significantly (+44%), whereas a non-significant decrease (?6%) was found in the number of side crashes. The decrease for the severe crashes was mainly attributable to the effect on side crashes, for which a significant decrease of 24% was found. Practical Applications It is concluded that combined speed and red light cameras have a favorable effect on traffic safety, in particular on severe crashes. However, future research should examine the circumstances of rear-end crashes and how this increase can be managed.

Ellen De Pauw; Stijn Daniels; Tom Brijs; Elke Hermans; Geert Wets

2014-01-01T23:59:59.000Z

107

Regenerative Boiler Feedwater Heater Economics  

E-Print Network (OSTI)

REGENERATIVE BOILER FEEDWATER HEATER ECONOMICS William L. Viar, PE waterland, Viar & Associates, Inc. Wilmington, Delaware ABSTRACT The basic Rankine Vapor Cycle has been r,~peatedly modified to improve efficiency. Always, the objective....g., first and second laws of thermodynamics) have improved and contributed to the evolution. The demands for larger systems with higher performance have been persistent. Progress i ve changes in the app1icat ion of the fundamental Rankine cycle have...

Viar, W. L.

108

Regenerative Architecture: A Pathway Beyond Sustainability.  

E-Print Network (OSTI)

??The current paradigm in the field of architecture today is one of degeneration and obsolete building technologies. Regenerative architecture is the practice of engaging the (more)

Littman, Jacob A

2009-01-01T23:59:59.000Z

109

Advanced regenerative absorption refrigeration cycles  

DOE Patents (OSTI)

Multi-effect regenerative absorption cycles which provide a high coefficient of performance (COP) at relatively high input temperatures. An absorber-coupled double-effect regenerative cycle (ADR cycle) (10) is provided having a single-effect absorption cycle (SEA cycle) (11) as a topping subcycle and a single-effect regenerative absorption cycle (1R cycle) (12) as a bottoming subcycle. The SEA cycle (11) includes a boiler (13), a condenser (21), an expansion device (28), an evaporator (31), and an absorber (40), all operatively connected together. The 1R cycle (12) includes a multistage boiler (48), a multi-stage resorber (51), a multisection regenerator (49) and also uses the condenser (21), expansion device (28) and evaporator (31) of the SEA topping subcycle (11), all operatively connected together. External heat is applied to the SEA boiler (13) for operation up to about 500 degrees F., with most of the high pressure vapor going to the condenser (21) and evaporator (31) being generated by the regenerator (49). The substantially adiabatic and isothermal functioning of the SER subcycle (12) provides a high COP. For higher input temperatures of up to 700 degrees F., another SEA cycle (111) is used as a topping subcycle, with the absorber (140) of the topping subcycle being heat coupled to the boiler (13) of an ADR cycle (10). The 1R cycle (12) itself is an improvement in that all resorber stages (50b-f) have a portion of their output pumped to boiling conduits (71a-f) through the regenerator (49), which conduits are connected to and at the same pressure as the highest pressure stage (48a) of the 1R multistage boiler (48).

Dao, Kim (14 Nace Ave., Piedmont, CA 94611)

1990-01-01T23:59:59.000Z

110

Regenerative Fuel Cells for Energy Storage | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Regenerative Fuel Cells for Energy Storage Regenerative Fuel Cells for Energy Storage Presentation by Corky Mittelsteadt, Giner Electrochemical Systems, at the NREL Reversible Fuel...

111

Regenerative medicine: the emergence of an industry  

Science Journals Connector (OSTI)

...orthopaedic area followed by neural repair, the cardiovascular area, inflammatory...products in the regenerative medicine pipeline. This is in addition to 28 products...ECMs as scaffolds for musculoskeletal repair. Clin. Ortho. Relat. Res. 3675...

2010-01-01T23:59:59.000Z

112

VEHICLE SPECIFICATIONS Vehicle Features Base Vehicle: 2010 Honda  

NLE Websites -- All DOE Office Websites (Extended Search)

Honda Honda Civic Hybrid VIN: JHMFA3F24AS005577 Seatbelt Positions: 5 Standard Features: Air Conditioning Power Locks Power Steering Power Brakes Power Windows Cruise Control Front Disc Brakes Rear Disc Brakes Front Wheel Drive Regenerative Braking Anti-Lock Brakes Traction Control Air Bags AM/FM Stereo with CD State of Charge Meter 1 Weights Design Curb Weight: 2877 lb Delivered Curb Weight: 2982 lb Distribution F/R (%): 57/43 GVWR: 3792 lb GAWR F/R: 1973/1841 lb Payload 2 : 810 lb Performance Goal: 400 lb Dimensions Wheelbase: 106.3 in Track F/R: 59.1/60.2 in Length: 177.3 in Width: 69.0 in Height: 56.3 in Ground Clearance: 6.0 in Performance Goal: 5.0 in Tires Manufacturer: Bridgestone

113

Regenerative fuel cell engineering - FY99  

SciTech Connect

The authors report the work conducted by the ESA-EPE Fuel Cell Engineering Team at Los Alamos National Laboratory during FY99 on regenerative fuel cell system engineering. The work was focused on the evaluation of regenerative fuel cell system components obtained through the RAFCO program. These components included a 5 kW PEM electrolyzer, a two-cell regenerative fuel cell stack, and samples of the electrolyzer membrane, anode, and cathode. The samples of the electrolyzer membrane, anode, and cathode were analyzed to determine their structure and operating characteristics. Tests were conducted on the two-cell regenerative fuel cell stack to characterize its operation as an electrolyzer and as a fuel cell. The 5 kW PEM electrolyzer was tested in the Regenerative Fuel Cell System Test Facility. These tests served to characterize the operation of the electrolyzer and, also, to verify the operation of the newly completed test facility. Future directions for this work in regenerative fuel cell systems are discussed.

Michael A. Inbody; Rodney L. Borup; James C. Hedstrom; Jose Tafoya; Byron Morton; Lois Zook; Nicholas E. Vanderborgh

2000-01-01T23:59:59.000Z

114

Regenerative rotary displacer Stirling engine  

SciTech Connect

A few rotary displacer Stirling engines in which the displacer has one gas pocket space at one side and rotates in a main enclosed cylinder, which is heated from one side and cooled from opposite side without any regenerator, have been studied for some time by the authors. The authors tried to improve this engine by equipping it with a regenerator, because without a regenerator, pressure oscillation and efficiency are too small. Here, several types of regenerative rotary displacer piston Stirling engines are proposed. One is the contra-rotating tandem two disc type displacer engine using axial heat conduction through side walls or by heat pipes and another is a single disc type with circulating fluid regenerator or heat pipes. Stirling engines of this new rotary displacer type are thought to attain high speed. Here, experimental results of the original rotary displacer Stirling engine without a regenerator, and one contra-rotating tandem displacer engine with side wall regenerator by axial heat conduction are reported accompanied with a discussion of the results.

Isshiki, Naotsugu; Watanabe, Hiroichi [Nihon Univ. Tokyo (Japan); Raggi, L. [Waseda Univ., Tokyo (Japan); Isshiki, Seita; Hirata, Koichi

1996-12-31T23:59:59.000Z

115

Therapeutic potential of nanoceria in regenerative medicine.  

SciTech Connect

Tissue engineering and regenerative medicine aim to achieve functional restoration of tissue or cells damaged through disease, aging or trauma. Advancement of tissue engineering requires innovation in the field of 3D scaffolding, and functionalization with bioactive molecules. Nanotechnology offers advanced materials with patterned nano-morphologies for cell growth and different molecular substrates which can support cell survival and functions. Cerium oxide nanoparticles (nanoceria) can control intracellular as well as extracellular reactive oxygen and nitrogen species. Recent findings suggest that nanoceria can enhance long-term cell survival, enable cell migration and proliferation, and promote stem cell differentiation. Moreover, the self-regenerative property of nanoceria permits a small dose to remain catalytically active for extended time. This review summarizes the possibilities and applications of nanoceria in the field of tissue engineering and regenerative medicine.

Das, Soumen; Chigurupati, Srinivasulu; Dowding, Janet; Munusamy, Prabhakaran; Baer, Donald R.; McGinnis, James F.; Mattson, Mark P.; Self, William; Seal, Sudipta

2014-11-14T23:59:59.000Z

116

Regenerative medicine. Opportunities and challenges: a brief overview  

Science Journals Connector (OSTI)

...components of regenerative medicine is intense worldwide...man-made materials using nanotechnology to improve their surface...opportunities for regenerative medicines are immense especially...researched; the advent of nanotechnology has allowed the development...commercialization of regenerative medicines. References Appelbaum...

2010-01-01T23:59:59.000Z

117

An improved theory for regenerative pump performance  

E-Print Network (OSTI)

, impeller angles, CFD 1 INTRODUCTION Regenerative flow pumps and compressors have found many applications of publications existing in the literature is comparatively less than papers dealing with centrifugal and axial flow pump/compressor (RFP and RFC) is applied as a gas compressor there is a further advantage

Kim, Yong Jung

118

Maass Regenerative Energien GmbH founders | Open Energy Information  

Open Energy Info (EERE)

Maass Regenerative Energien GmbH founders Maass Regenerative Energien GmbH founders Jump to: navigation, search Name Maass Regenerative Energien GmbH founders Place Wesel, Germany Sector Solar Product Founders of the Wesel-based solar project company. References Maass Regenerative Energien GmbH founders[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Maass Regenerative Energien GmbH founders is a company located in Wesel, Germany . References ↑ "[ Maass Regenerative Energien GmbH founders]" Retrieved from "http://en.openei.org/w/index.php?title=Maass_Regenerative_Energien_GmbH_founders&oldid=348555" Categories: Clean Energy Organizations Companies Organizations Stubs What links here

119

The effect of magnetic topology on thermally-driven winds: towards a general formulation of the braking law  

E-Print Network (OSTI)

Stellar winds are thought to be the main process responsible for the spin down of main-sequence stars. The extraction of angular momentum by a magnetized wind has been studied for decades, leading to several formulations for the resulting torque. However, previous studies generally consider simple dipole or split monopole stellar magnetic topologies. Here we consider in addition to a dipolar stellar magnetic field, both quadrupolar and octupolar configurations, while also varying the rotation rate and the magnetic field strength. 60 simulations made with a 2.5D, cylindrical and axisymmetric set-up and computed with the PLUTO code were used to find torque formulations for each topology. We further succeed to give a unique law that fits the data for every topology by formulating the torque in terms of the amount of open magnetic flux in the wind. We also show that our formulation can be applied to even more realistic magnetic topologies, with examples of the Sun in its minimum and maximum phase as observed at t...

Rville, Victor; Matt, Sean; Strugarek, Antoine; Pinto, Rui

2014-01-01T23:59:59.000Z

120

Disc formation in turbulent cloud cores: is magnetic flux loss necessary to stop the magnetic braking catastrophe or not?  

Science Journals Connector (OSTI)

......regions, while the MHD model with artificially...Appendix reproduces the diagrams as obtained in SGL12...the mass M. These diagrams provide a way to...than in the ideal MHD model and comparable...and 1000 au scale diagrams - middle and right-hand...specially for the ideal MHD model.) The geometry......

R. Santos-Lima; E. M. de Gouveia Dal Pino; A. Lazarian

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "brakes regenerative braking" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Investigation of a regenerative damping concept  

E-Print Network (OSTI)

including stationary equipment, turbine engines, and automotive systems. Perhaps one of the most common uses for the damper is in the automobile suspension, where the damper controls passenger comfort and vehicle handling. The power dissipated... by automotive shock absorbers has been studied previously, and these studies begin to provide motivation for the investigation of regenerative damping. The power dissipated in an automotive shock absorber has been studied through both computer simulation...

Fodor, Michael Glenn

2012-06-07T23:59:59.000Z

122

Low-temperature thermally regenerative electrochemical system  

DOE Patents (OSTI)

A thermally regenerative electrochemical system is described including an electrochemical cell with two water-based electrolytes separated by an ion exchange membrane, at least one of the electrolytes containing a complexing agent and a salt of a multivalent metal whose respective order of potentials for a pair of its redox couples is reversible by a change in the amount of the ocmplexing agent in the electrolyte, the complexing agent being removable by distillation to cause the reversal.

Loutfy, R.O.; Brown, A.P.; Yao, N.P.

1982-04-21T23:59:59.000Z

123

Low temperature thermally regenerative electrochemical system  

DOE Patents (OSTI)

A thermally regenerative electrochemical system including an electrochemical cell with two water-based electrolytes separated by an ion exchange membrane, at least one of the electrolytes containing a complexing agent and a salt of a multivalent metal whose respective order of potentials for a pair of its redox couples is reversible by a change in the amount of the complexing agent in the electrolyte, the complexing agent being removable by distillation to cause the reversal.

Loutfy, Raouf O. (Tucson, AZ); Brown, Alan P. (Bolingbrook, IL); Yao, Neng-Ping (Clarendon Hills, IL)

1983-01-01T23:59:59.000Z

124

Powering MEMS portable devicesa review of non-regenerative and regenerative  

Science Journals Connector (OSTI)

Power consumption is forecast by the International Technology Roadmap of Semiconductors (ITRS) to pose long-term technical challenges for the semiconductor industry. The purpose of this paper is threefold: (1)to provide an overview of strategies for powering MEMS via non-regenerative and regenerative power supplies; (2)to review the fundamentals of piezoelectric energy harvesting, along with recent advancements, and (3)to discuss future trends and applications for piezoelectric energy harvesting technology. The paper concludes with a discussion of research needs that are critical for the enhancement of piezoelectric energy harvesting devices.

K A Cook-Chennault; N Thambi; A M Sastry

2008-01-01T23:59:59.000Z

125

2013-2014 Handbook Stem Cell Biology and Regenerative  

E-Print Network (OSTI)

2013-2014 Handbook Stem Cell Biology and Regenerative Medicine Interdisciplinary Graduate Program and yet focus specifically on fundamentals of biology and medicine necessary for a successful career

Puglisi, Joseph

126

Development of non-premixed porous inserted regenerative thermal oxidizer  

Science Journals Connector (OSTI)

In this study, a porous inserted regenerative thermal oxidizer (PRTO) system was developed for a... x emissions and high radiant efficiency. Zirconium dioxide (ZrO2...) ceramic ...

Jun-chun Zhang; Le-ming Cheng; Cheng-hang Zheng

2013-09-01T23:59:59.000Z

127

Microsoft Word - chvs10.html  

NLE Websites -- All DOE Office Websites (Extended Search)

7 Chevrolet S-10 Electric 7 Chevrolet S-10 Electric VEHICLE SPECIFICATIONS PURPOSE-BUILT VEHICLE Base Vehicle: 1997 Chevrolet S-10 VIN: 1GCDE14H4V80003EX Seatbelt Positions: Three Standard Features: Heat Pump Climate Control System Auxillary Diesel Fuel Fired Heater (Only operates Below 40 F) Cruise Control Tilt Steering Wheel Front Wheel Drive Power Steering Power Brakes Anti-Lock Brakes Front Disk Brakes Regenerative Braking Drivers Side Air Bags AM/FM Stereo Radio Half-Bed Tonneau Cover BATTERY Manufacturer: Delphi Energy Type: Valve Regulated Lead Acid Number of Modules: 26 Weight of Module: 19 kg Weight of Pack(s): 575 kg Pack Locations: Underbody Nominal Module Voltage: 12 V Nominal System Voltage: 312 V Nominal Capacity (C/2): 48 Ah WEIGHTS Design Curb Weight: 4300 lbs

128

Regenerative nanotechnology in oral and maxillofacial surgery  

Science Journals Connector (OSTI)

Abstract Regenerative nanotechnology is at the forefront of medical research, and translational medicine is a challenge to both scientists and clinicians. Although there has been an exponential rise in the volume of research generated about it for both medical and surgical uses, key questions remain about its actual benefits. Nevertheless, some people think that therapeutics based on its principles may form the core of applied research for the future. Here we give an account of its current use in oral and maxillofacial surgery, and implications and challenges for the future.

Kaveh Shakib; Aaron Tan; Vukic Soskic; Alexander M. Seifalian

2014-01-01T23:59:59.000Z

129

Current concepts: tissue engineering and regenerative medicine applications in the ankle joint  

Science Journals Connector (OSTI)

...hand, regenerative medicine (RM) is a broader...strategies [18], nanotechnologies and several medical...engineering and regenerative medicine strategies to skin...technologies such as nanotechnology [17,20,33...engineering and regenerative medicine strategies to tendon...

2014-01-01T23:59:59.000Z

130

Multiple excitation regenerative amplifier inertial confinement system  

DOE Patents (OSTI)

The invention relates to apparatus and methods for producing high intensity laser radiation generation which is achieved through an optical amplifier-storage ring design. One or two synchronized, counterpropagating laser pulses are injected into a regenerative amplifier cavity and amplified by gain media which are pumped repetitively by electrical or optical means. The gain media excitation pulses are tailored to efficiently amplify the laser pulses during each transit. After the laser pulses have been amplified to the desired intensity level, they are either switched out of the cavity by some switch means, as for example an electro-optical device, for any well known laser end uses, or a target means may be injected into the regenerative amplifier cavity in such a way as to intercept simultaneously the counterpropagating laser pulses. One such well known end uses to which this invention is intended is for production of high density and temperature plasmas suitable for generating neutrons, ions and x-rays and for studying matter heated by high intensity laser radiation. 11 figs.

George, V.E.; Haas, R.A.; Krupke, W.F.; Schlitt, L.G.

1980-05-27T23:59:59.000Z

131

Multiple excitation regenerative amplifier inertial confinement system  

DOE Patents (OSTI)

The invention relates to apparatus and methods for producing high intensity laser radiation generation which is achieved through an optical amplifier-storage ring design. One or two synchronized, counterpropagating laser pulses are injected into a regenerative amplifier cavity and amplified by gain media which are pumped repetitively by electrical or optical means. The gain media excitation pulses are tailored to efficiently amplify the laser pulses during each transit. After the laser pulses have been amplified to the desired intensity level, they are either switched out of the cavity by some switch means, as for example an electro-optical device, for any well known laser end uses, or a target means may be injected into the regenerative amplifier cavity in such a way as to intercept simultaneously the counterpropagating laser pulses. One such well known end uses to which this invention is intended is for production of high density and temperature plasmas suitable for generating neutrons, ions and x-rays and for studying matter heated by high intensity laser radiation.

George, Victor E. [Livermore, CA; Haas, Roger A. [Pleasanton, CA; Krupke, William F. [Pleasanton, CA; Schlitt, Leland G. [Livermore, CA

1980-05-27T23:59:59.000Z

132

New Regenerative Cycle for Vapor Compression Refrigeration  

Office of Scientific and Technical Information (OSTI)

SCIENTIFIC REPORT SCIENTIFIC REPORT Title Page Project Title: New Regenerative Cycle for Vapor Compression Refrigeration DOE Award Number: DE-FG36-04GO14327 Document Title: Final Scientific Report Period Covered by Report: September 30, 2004 to September 30, 2005 Name and Address of Recipient Organization: Magnetic Development, Inc., 68 Winterhill Road, Madison, CT 06443, phone: 203-214-7247, fax: 203-421-7948, e-mail: mjb1000@aol.com Contact Information: Mark J. Bergander, Ph.D., P.E., Principal Investigator, phone: 203-214-7247, fax: 203-421-7948, e-mail: mjb1000@aol.com Project Objective (as stated in the proposal): The main objective of this project is to confirm on a well-instrumented prototype the theoretically derived claims of higher efficiency and coefficient

133

Solar Powered Commuter Vehicle Sponsored by: Andy Schoenberg, Ph.D. of SunzeeCar LLC. ; Advisor: Kent Udell, Ph. D.  

E-Print Network (OSTI)

an optimal speed of 40 mph. Thep p p graph below depicts the power usage over timeg p p p g for a single stop the system without Regenerative Braking · Convert an Average of 50% of Kineticg Energy Back into Electrical Energy · Increase the Range from 30 miles to 40g miles. (10 mile increase) Testing:g The car was driven

Provancher, William

134

Gille-ESYS 10 1 Should Alex Buy a Battery-Powered Car?  

E-Print Network (OSTI)

that use hydrogen fuel cells have a range of more than 200 miles, although they're outrageously expensive. ZEVs just aren't sufficiently environmental to justify their cost. For one thing, manufacturing a new their fuel efficiency is amazing. I was reading that they use regenerative braking to charge up

Gille, Sarah T.

135

Regenerative Energie Systeme RegEnSys | Open Energy Information  

Open Energy Info (EERE)

Regenerative Energie Systeme RegEnSys Regenerative Energie Systeme RegEnSys Jump to: navigation, search Name Regenerative Energie Systeme (RegEnSys) Place Frankenthal, Rhineland-Palatinate, Germany Zip 67227 Sector Solar Product Sale and installation of solar (thermal and PV) and ventilation systems. Coordinates 51.131202°, 14.106809° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":51.131202,"lon":14.106809,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

136

Value Capture in the Global Wind Energy Industry  

E-Print Network (OSTI)

Nacelle housing Brake system Yaw bearings All other Suppliern.a. n.a. Brake system n.a. n.a. Yaw bearings Spain n .a.

Dedrick, Jason; Kraemer, Kenneth L.

2011-01-01T23:59:59.000Z

137

FedEx Gasoline Hybrid Electric Delivery Truck Evaluation: 6-Month...  

NLE Websites -- All DOE Office Websites (Extended Search)

each of these systems. These systems and specific components of interest include: * Vehicle Systems o Engine o Hybrid propulsion system o Brakes * Vehicle Components o Brake...

138

Ignition feedback regenerative free electron laser (FEL) amplifier  

DOE Patents (OSTI)

An ignition feedback regenerative amplifier consists of an injector, a linear accelerator with energy recovery, and a high-gain free electron laser amplifier. A fraction of the free electron laser output is coupled to the input to operate the free electron laser in the regenerative mode. A mode filter in this loop prevents run away instability. Another fraction of the output, after suitable frequency up conversion, is used to drive the photocathode. An external laser is provided to start up both the amplifier and the injector, thus igniting the system.

Kim, Kwang-Je (Burr Ridge, IL); Zholents, Alexander (Walnut Creek, CA); Zolotorev, Max (Oakland, CA)

2001-01-01T23:59:59.000Z

139

Conversion of a regenerative oxidizer into catalytic unit  

SciTech Connect

Use of a VOC oxidation catalyst in the existing regenerative thermal oxidizers may greatly reduce fuel consumption and improve the oxidizer performance. This was demonstrated in a commercial 25,000 SCFM unit installed at a printing facility. The paper discusses the principles of the oxidizer retrofit design and test results obtained at various conditions of operation.

Matros, Y.S.; Bunimovich, G.A.; Strots, V.O. [Matros Technologies, Chesterfield, MO (United States)] [and others

1997-12-31T23:59:59.000Z

140

Regenerative oscillation and four-wave mixing in graphene optoelectronics  

E-Print Network (OSTI)

Regenerative oscillation and four-wave mixing in graphene optoelectronics T. Gu1 *, N. Petrone2 , J consecutive first observations in graphene­ silicon hybrid optoelectronic devices--ultralow-power resonant optoelectronics and all-optical signal processing. S ubwavelength nanostructures in monolithic material platforms

Hone, James

Note: This page contains sample records for the topic "brakes regenerative braking" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Alkaline regenerative fuel cell systems for energy storage  

SciTech Connect

This paper presents the results of a preliminary design study of a Regenerative Fuel Cell Energy Storage system for application to future low-earth orbit space missions. This high energy density storage system is based on state-of-the-art alkaline electrolyte cell technology and incorporates dedicated fuel cell and electrolysis cell modules. 11 refs.

Schubert, F.H.; Reid, M.A.; Martin, R.E.

1981-01-01T23:59:59.000Z

142

Hybrid: Overview  

NLE Websites -- All DOE Office Websites (Extended Search)

button highlighted Starting Button Cruising Button Passing Button Braking Button Stopped Button subbanner graphic: gray bar button highlighted Starting Button Cruising Button Passing Button Braking Button Stopped Button subbanner graphic: gray bar OVERVIEW Hybrid-electric vehicles combine the benefits of gasoline engines and electric motors to provide improved fuel economy. The engine provides most of the vehicle's power, and the electric motor provides additional power when needed, such as for accelerating and passing. This allows a smaller, more-efficient engine to be used. The electric power for the motor is generated from regenerative braking and from the gasoline engine, so hybrids don't have to be "plugged in" to an electrical outlet to recharge. stage graphic: vertical blue rule Main stage: See through car with battery, engine, and electric motor visible. The car is stopped at an intersection.

143

Hybrid: Overview  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

button highlighted Starting Button Cruising Button Passing Button Braking Button Stopped Button subbanner graphic: gray bar button highlighted Starting Button Cruising Button Passing Button Braking Button Stopped Button subbanner graphic: gray bar OVERVIEW Hybrid-electric vehicles combine the benefits of gasoline engines and electric motors to provide improved fuel economy. The engine provides most of the vehicle's power, and the electric motor provides additional power when needed, such as for accelerating and passing. This allows a smaller, more-efficient engine to be used. The electric power for the motor is generated from regenerative braking and from the gasoline engine, so hybrids don't have to be "plugged in" to an electrical outlet to recharge. stage graphic: vertical blue rule Main stage: See through car with battery, engine, and electric motor visible. The car is stopped at an intersection.

144

Chapter 71 - Ethics in Regenerative Medicine and Transplantation  

Science Journals Connector (OSTI)

The relationship between regenerative medicine and organ transplantation is characterized by a high degree of complexity and variety, an extraordinary combination of disciplines and technologies, and a broad range of translational development. Research in regenerative medicine and organ transplantation therefore raises an unprecedented mix of ethical issues, both familiar and constantly changing as science advances and societal priorities change. Despite its enormous promise, organ regeneration research remains in the early stages, sharing many features of first-in-human trials, but also expanding and updating the ethical considerations relevant to translational research. These include balancing harms and benefits; ensuring that research is well designed and therefore likely to yield useful data; equitable selection of research subjects; informed consent and the therapeutic misconception; long-term follow-up; and cost, access, and distributive justice.

Nancy M.P. King

2014-01-01T23:59:59.000Z

145

Regenerative thermal oxidation and alternative technologies for VOC control  

SciTech Connect

Thermal oxidation technologies have been used successfully to control VOC`s for many years but the recent 1990 Clean Air Act Amendments have spurred improvements in the established processes and development of economic alternatives. The combination of the regulatory maze and confusion in the selection of the best technology for a particular application has created a potential nightmare for those companies facing a need to reduce their VOC EMISSIONS. The relative advantages and disadvantages of regenerative, recuperative and catalytic oxidizers will be reviewed, with an emphasis on the economic justification for regenerative thermal oxidation (RTO). Control efficiencies of more than 99% have been demonstrated for RTO`s on a multitude of industrial process exhaust streams. Lowest evaluated cost over a fifteen to twenty year effective equipment life is a key selection criteria. This paper describes the underlying principles of thermal oxidation, and discusses the applicability of these and other emerging technologies for VOC control.

Biedell, E.L. [REECQ, Somerville, NJ (United States)

1995-12-31T23:59:59.000Z

146

Chapter 30 - Applications of Nanotechnology for Regenerative Medicine  

Science Journals Connector (OSTI)

Publisher Summary This chapter examines the impact of nanotechnology on regenerative medicine related to cellular therapies and biomaterial control, which play an important role for implant design and tissue engineering. Cellular therapies for regenerative medicine would benefit from nanotechnology since tracking of implanted cells would provide the means to better evaluate the viability of engineered tissues and help in understanding the biodistribution and migration pathways of transplanted cells. Nanotechnology would also allow better and more intelligent control of the bioactive factors, which can influence cellular therapies. Biomaterials play an important role in regenerative medicine because they make up a large component of implants and tissue scaffolds. Biocompatible scaffolds could provide temporary structural support guiding cell growth, assist the transportation of essential nutrients, and facilitate the formation of functional tissues and organs. Increasing evidence shows that the nature of the biomaterial greatly affects long-term success of biomedical implants and short-term wound healing response. Substrate features such as the chemical composition and surface morphology affect the viability, adhesion, morphology, and motility of cells. Therefore, controlling the three-dimensional structure and surface composition of a biomaterial is important to promoting normal tissue growth or minimizing foreign body response. The unique properties of nanomaterials and nanostructures could be particularly useful in controlling intrinsic stem cell signals and in dissecting the mechanisms underlying embryonic and adult stem cell behavior.

Benjamin S. Harrison; Sirinrath Sirivisoot

2011-01-01T23:59:59.000Z

147

Theoretical and experimental study on regenerative rotary displacer Stirling engine  

SciTech Connect

Recently a quite new type of hot air engine called rotary displacer engine, in which the displacer is a rotating disk enclosed in a cylinder, has been conceived and developed. The working gas, contained in a notch excavated in the disk, is heated and cooled alternately, on account of the heat transferred through the enclosing cylinder that is heated at one side and cooled at the opposite one. The gas temperature oscillations cause the pressure fluctuations that get out mechanical power acting on a power piston. In order to attempt to increase the performances for this kind of engine, the authors propose three different regeneration methods. The first one comprises two coaxial disks that, revolving in opposite ways, cause a temperature gradient on the cylinder wall and a regenerative axial heat conduction through fins shaped on the cylinder inner wall. The other two methods are based on the heat transferred by a proper closed circuit that in one case has a circulating liquid inside and in the other one is formed by several heat pipes working each one for different temperatures. An engine based on the first principle, the Regenerative Tandem Contra-Rotary Displacer Stirling Engine, has been realized and experimented. In this paper experimental results with and without regeneration are reported comparatively with a detailed description of the unity. A basic explanation of the working principle of this engine and a theoretical analysis investigating the main influential parameters for the regenerative effect are done. This new rotating displacer Stirling engines, for their simplicity, are expected to attain high rotational speed especially for applications as demonstration and hobby unities.

Raggi, L.; Katsuta, Masafumi [Waseda Univ., Tokyo (Japan); Isshiki, Naotsugu [Nihon Univ., Tokyo (Japan); Isshiki, Seita [Isshiki R and D Lab., Tokyo (Japan)

1997-12-31T23:59:59.000Z

148

Propellant feed system of a regeneratively cooled scramjet  

SciTech Connect

An expander cycle for an airframe-integrated hydrogen-fueled scramjet is analyzed to study regenerative cooling characteristics and overall specific impulse. Below Mach 10, the specific impulse and thrust coincide with the reference values. At Mach numbers above 10, a reduction of the specific impulse occurs due to the coolant flow rate requirement, which is accompanied by an increase of thrust. It is shown that the thrust may be increased by injecting excess fuel into the combustor to compensate for the decrease of the specific impulse. 9 refs.

Kanda, Takeshi; Masuya, Goro; Wakamatsu, Yoshio (National Aerospace Laboratory, Kakuda (Japan))

1991-04-01T23:59:59.000Z

149

Could Gaussian regenerative stations act as quantum repeaters?  

E-Print Network (OSTI)

Higher transmission loss diminishes the performance of optical communication|be it the rate at which classical or quantum data can be sent reliably, or the secure key generation rate of quantum key distribution (QKD). Loss compounds with distance|exponentially in an optical fiber, and inverse-square with distance for a free-space channel. In order to boost classical communication rates over long distances, it is customary to introduce regenerative relays at intermediate points along the channel. It is therefore natural to speculate whether untended regenerative stations, such as phase-insensitive or phase-sensitive optical amplifiers, could serve as repeaters for long-distance QKD. The primary result of this paper rules out all bosonic Gaussian channels to be useful as QKD repeaters, which include phase-insensitive and phase-sensitive amplifiers as special cases, for any QKD protocol. We also delineate the conditions under which a Gaussian relay renders a lossy channel entanglement breaking, which in turn makes the channel useless for QKD.

Ryo Namiki; Oleg Gittsovich; Saikat Guha; Norbert Ltkenhaus

2014-10-02T23:59:59.000Z

150

Fast Threat Detection and Localization Using Super-Regenerative Transceiver in  

E-Print Network (OSTI)

Fast Threat Detection and Localization Using Super-Regenerative Transceiver in Random Noise Radar-Regenerative (SRG) transceiver as a type of ultra-fast electronics platform for threat detection and localization the Angle-of-Arrival (AOA) information of the inbound threats. Simulations and detailed laboratory

Zhang, Yan

151

Modeling Process Characteristics and Performance of Fixed and Fluidized Bed Regenerative Thermal Oxidizer  

Science Journals Connector (OSTI)

Modeling Process Characteristics and Performance of Fixed and Fluidized Bed Regenerative Thermal Oxidizer ... (7)?Cheng, W.-H.; Chou, M.-S.; Lee, W.-S.; Huang, B.-J. Applications of Low-Temperature Regenerative Thermal Oxidizers to Treat Volatile Organic Compounds. ...

Pietropaolo Morrone; Francesco P. Di Maio; Alberto Di Renzo; Mario Amelio

2006-05-26T23:59:59.000Z

152

A New Absorption Cycle: The Single-Effect Regenerative Absoprtion Refrigeration Cycle  

E-Print Network (OSTI)

I r;,.foO REGENERATIVE ABSORPTION Y- Wz Z .lW U t- o 0:I:I I I /f I I I ~~-/5f=- - - - ABSORPTION .c:::. ." ." ,,,"l e lR (regene r ative absorption) using NH3/H20 mixture s .

Dao, K.

2011-01-01T23:59:59.000Z

153

Integration and Dynamics of a Renewable Regenerative Hydrogen Fuel Cell System  

E-Print Network (OSTI)

Integration and Dynamics of a Renewable Regenerative Hydrogen Fuel Cell System by Alvin Peter, hydrogen and electricity storage, and fuel cells. A special design feature of this test bed is the ability of the author. #12;ii Supervisory Committee Integration and Dynamics of a Renewable Regenerative Hydrogen Fuel

Victoria, University of

154

Heat transfer and combustion characteristics of a burner with a rotary regenerative heat exchanger  

SciTech Connect

The authors have developed a Rotary Regenerative Combustion (RRX) System, which is coupled with a compact high efficiency regenerative air heat exchanger and a combustion burner. This system contributes to saving energy of fuel firing industrial furnaces and decreases NO{sub x} emission. This technology can be considered as a solution of greenhouse problem. This paper, discusses a compact high efficiency regenerative air heat exchanger in comparison with the existing types of regenerative burners and reverse firing with high momentum fuel jet (with motive fluid) in the furnace. This burner is compact in size, with high fuel efficiency, low NOx emission, easy to operate, and reliable, based on the results of field tests and commercial operations. The authors can say that the RRX system is a regenerative burner of the second generation.

Hirose, Yasuo; Kaji, Hitoshi; Arai, Norio

1998-07-01T23:59:59.000Z

155

Improving the efficiency and availability analysis of a modified reheat regenerative Rankine cycle  

SciTech Connect

Reheating in a reheat regenerative steam power cycle increases efficiency by increasing the average temperature of heat reception, but also increases the irreversibility of feed water heaters by raising the temperature of the superheated steam used for the regenerative process. This paper introduces some modifications to the regular reheat regenerative steam power cycle that reduce the irreversibility of the regenerative process. An availability analysis of the modified cycle and the regular reheat regenerative cycle as well as a comparison study between both cycles is done. The results indicate that a gain in energy efficiency of up to 2.5% as the steam generator pressure varies is obtained when applying such modifications at the same conditions of pressure, temperature's number of reheating stages, and feed water heaters. The availability analysis showed that such increase in efficiency is due to the reduction of the irreversibility of the regeneration process of the modified cycle.

Bassily, A.M.

1999-07-01T23:59:59.000Z

156

MonthlyReport  

NLE Websites -- All DOE Office Websites (Extended Search)

74 74 Number of trips 399 Distance traveled (mi) 148 Percent of total distance traveled (%) 73% Average Trip Distance (mi) 0.4 Average Driving Speed (mph) 6.3 Average Stops per mile 35.5 Percent of Regen Braking Energy Recovery (%) 11% City Trips ( < 5 stops/mile & <37 mph avg) DC electrical energy consumption (DC Wh/mi) 423 Number of trips 27 Distance traveled (mi) 54 Percent of total distance traveled (%) 27% Average Trip Distance (mi) 2.0 Average Driving Speed (mph) 20.7 Average Stops per mile 3.5 Percent of Regen Braking Energy Recovery (%) 15% Highway Trips ( 37 mph avg) DC electrical energy consumption (DC Wh/mi) 0 Number of trips 0 Distance traveled (mi) 0 Percent of total distance traveled (%) 0% Average Trip Distance (mi) 0.0 Average Driving Speed (mph)

157

MonthlyReport  

NLE Websites -- All DOE Office Websites (Extended Search)

0 0 Number of trips 493 Distance traveled (mi) 189 Percent of total distance traveled (%) 38% Average Trip Distance (mi) 0.4 Average Driving Speed (mph) 4.9 Average Stops per mile 28.7 Percent of Regen Braking Energy Recovery (%) 15% City Trips ( < 5 stops/mile & <37 mph avg) DC electrical energy consumption (DC Wh/mi) 377 Number of trips 67 Distance traveled (mi) 275 Percent of total distance traveled (%) 56% Average Trip Distance (mi) 4.1 Average Driving Speed (mph) 17.9 Average Stops per mile 3.7 Percent of Regen Braking Energy Recovery (%) 13% Highway Trips ( 37 mph avg) DC electrical energy consumption (DC Wh/mi) 438 Number of trips 1 Distance traveled (mi) 29 Percent of total distance traveled (%) 6% Average Trip Distance (mi) 28.7 Average Driving Speed (mph)

158

MonthlyReport  

NLE Websites -- All DOE Office Websites (Extended Search)

505 505 Number of trips 601 Distance traveled (mi) 245 Percent of total distance traveled (%) 62% Average Trip Distance (mi) 0.4 Average Driving Speed (mph) 5.4 Average Stops per mile 34.8 Percent of Regen Braking Energy Recovery (%) 15% City Trips ( < 5 stops/mile & <37 mph avg) DC electrical energy consumption (DC Wh/mi) 373 Number of trips 35 Distance traveled (mi) 124 Percent of total distance traveled (%) 31% Average Trip Distance (mi) 3.5 Average Driving Speed (mph) 23.0 Average Stops per mile 3.7 Percent of Regen Braking Energy Recovery (%) 13% Highway Trips ( 37 mph avg) DC electrical energy consumption (DC Wh/mi) 319 Number of trips 3 Distance traveled (mi) 25 Percent of total distance traveled (%) 6% Average Trip Distance (mi) 8.5 Average Driving Speed (mph)

159

MonthlyReport  

NLE Websites -- All DOE Office Websites (Extended Search)

613 613 Number of trips 89 Distance traveled (mi) 9 Percent of total distance traveled (%) 30% Average Trip Distance (mi) 0.1 Average Driving Speed (mph) 7.0 Average Stops per mile 44.5 Percent of Regen Braking Energy Recovery (%) 9% City Trips ( < 5 stops/mile & <37 mph avg) DC electrical energy consumption (DC Wh/mi) 487 Number of trips 8 Distance traveled (mi) 5 Percent of total distance traveled (%) 16% Average Trip Distance (mi) 0.6 Average Driving Speed (mph) 25.0 Average Stops per mile 3.8 Percent of Regen Braking Energy Recovery (%) 6% Highway Trips ( 37 mph avg) DC electrical energy consumption (DC Wh/mi) 487 Number of trips 7 Distance traveled (mi) 16 Percent of total distance traveled (%) 54% Average Trip Distance (mi) 2.3 Average Driving Speed (mph)

160

MonthlyReport  

NLE Websites -- All DOE Office Websites (Extended Search)

0 0 Number of trips 1,610 Distance traveled (mi) 372 Percent of total distance traveled (%) 72% Average Trip Distance (mi) 0.2 Average Driving Speed (mph) 5.2 Average Stops per mile 32.1 Percent of Regen Braking Energy Recovery (%) 13% City Trips ( < 5 stops/mile & <37 mph avg) DC electrical energy consumption (DC Wh/mi) 383 Number of trips 114 Distance traveled (mi) 144 Percent of total distance traveled (%) 28% Average Trip Distance (mi) 1.3 Average Driving Speed (mph) 18.3 Average Stops per mile 3.8 Percent of Regen Braking Energy Recovery (%) 16% Highway Trips ( 37 mph avg) DC electrical energy consumption (DC Wh/mi) 549 Number of trips 5 Distance traveled (mi) 2 Percent of total distance traveled (%) 0% Average Trip Distance (mi) 0.4 Average Driving Speed (mph)

Note: This page contains sample records for the topic "brakes regenerative braking" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

MonthlyReport  

NLE Websites -- All DOE Office Websites (Extended Search)

530 530 Number of trips 1,308 Distance traveled (mi) 495 Percent of total distance traveled (%) 69% Average Trip Distance (mi) 0.4 Average Driving Speed (mph) 5.6 Average Stops per mile 31.4 Percent of Regen Braking Energy Recovery (%) 15% City Trips ( < 5 stops/mile & <37 mph avg) DC electrical energy consumption (DC Wh/mi) 471 Number of trips 91 Distance traveled (mi) 175 Percent of total distance traveled (%) 24% Average Trip Distance (mi) 1.9 Average Driving Speed (mph) 16.6 Average Stops per mile 3.8 Percent of Regen Braking Energy Recovery (%) 13% Highway Trips ( 37 mph avg) DC electrical energy consumption (DC Wh/mi) 357 Number of trips 2 Distance traveled (mi) 49 Percent of total distance traveled (%) 7% Average Trip Distance (mi) 24.7 Average Driving Speed (mph)

162

Engines - Emissions Assessment  

NLE Websites -- All DOE Office Websites (Extended Search)

EPRI Hybrid Electric Vehicle Working Group: HEV Costs and Emissions EPRI Hybrid Electric Vehicle Working Group: HEV Costs and Emissions Hybrid electric vehicles (HEVs) are attractive options for increasing vehicle fuel economy and reducing emissions of criteria pollutants and greenhouse gases. Two automobile manufacturers have already introduced HEVs, and other manufacturers are planning to introduce their own models. One available HEV combines mass reduction (also applicable to conventional vehicles) with idle-stop, regenerative braking, and electric-drive assist to achieve a fuel economy more than 2.5 times the current Corporate Average Fuel Economy (CAFE) standard. The second HEV combines idle-stop, regenerative braking, electric assist acceleration, and continuously variable transmission (CVT) to achieve a fuel economy of more than twice the current CAFÉ standard, qualifying as a super ultra-low emissions vehicle (SULEV).

163

Reduction of carbon monoxide emissions with regenerative thermal oxidizers  

SciTech Connect

Regenerative thermal oxidizers (RTOs) have been extensively used for the control of volatile organic compound (VOC) emissions from various sources. However, very little information is available on the ability of RTOs to control carbon monoxide (CO) emissions. This paper presents the results of extensive tests conducted on two RTOs to determine their VOC and CO control efficiencies. The inlet gas stream to the RTOs includes VOC and CO concentrations as high as 2,000 ppm and 3,600 ppm, respectfully. The testing demonstrated that both RTOs were capable of controlling greater than 98% of both inlet VOCs and CO. While the destruction efficiencies within the combustion chambers exceeded 99.9%, direct leakage past valves accounted for the lower control efficiencies. The tests indicated that the overall VOC and CO control efficiencies of the RTOs may be limited by valve leakage. The design and permitting of a RTO should include conservative control estimates which account for possible valve leakage.

Firmin, S.M.; Lipke, S.; Baturay, A.

1996-09-01T23:59:59.000Z

164

Innovative technical advances in the application of regenerative thermal oxidizers  

SciTech Connect

Regenerative Thermal Oxidizers (RTOs) have been applied in industry for over twenty (20) years to reduce the emissions of Volatile Organic compounds (VOCs) into the atmosphere from industrial process emissions. The Clean Air Act and its amendments have established a regulatory framework setting standards for allowable levels of VOC emissions. Several forces are driving the increasing use and acceptance of this technology: (1) High efficiency and increasing stringent standards require higher destruction efficiency; (2) Low operating cost and control of emission streams with less VOCs (therefore, less fuel value) causing higher use of natural gas for combustion; (3) Low NO{sub x}--the overlapping concern of NO{sub x} generation from the combustion process; (4) Low process upsets with improved productivity of industrial process require continuous integration of VOC abatement equipment; and (5) Reduced capital cost--capital cost criteria is $/ton of VOC abated. The latest development in RTO technology is the Single Can Oxidizer (SCO). This regenerative thermal oxidizer is the accumulation of developments in many subsystems of RTOs, combined with a dramatic new configuration. Several features of the system offer unique benefits to industrial end users: (1) Single can configuration gives reduced weight, material usage, and cost; (2) Rotary valve design gives smooth operation, and low pressure fluctuations; (3) Structured block heat recovery media reduces pressure drop, and lowers HP/operating cost; and (4) SMART system lowers NO{sub x} output/reduced operation cost. This paper will present a discussion of the features listed above. In addition, it will provide analytical documentation of test results for a full scale commercial unit.

Grzanka, R.; Truppi, T.

1999-07-01T23:59:59.000Z

165

Performance analysis of reciprocating regenerative magnetic heat pumping. Final report  

SciTech Connect

Transient flow phenomena in the regenerator tube of reciprocating magnetic heat pumps have been studied numerically and experimentally. In the numerical study, two approaches were taken: (1) solving the energy balance equations for fluid through a porous bed directly and (2) solving the Navier-Stokes equations with a buoyancy force term in the momentum equation. A flow thermal mixing problem was found in both approaches because of the piston-like motion of the regenerator tube that hinders the development of the temperature. The numerical study results show that a 45 K temperature span can be reached in 10 minutes of charge time through the use of a 7-Tesla magnetic field. Using the second numerical approach, temperature stratification in the regenerator fluid column was clearly indicated through temperature rasters. The study also calculates regenerator efficiency and energy delivery rates when heating load and cooling load are applied. Piecewise variation of the regenerator tube moving speed has been used in the present numerical study to control the mass flow rate, reduce thermal mixing of the flow and thus the regenerative losses. The gadolinium`s adiabatic temperature has been measured under 6.5 Tesla of magnet field and different of operating temperatures ranging from 285 K to 320 K. Three regenerative heat pumping tests have also been conducted based on the Reynolds number of the regenerator tube flow, namely Re=300, Re=450, and Re=750 without loads. Maximum temperature span are 12 & 11 K and 9 K for the case of Re=300, Re=450 and Re=750, respectively. Experimental data are in good agreement with the numerical calculation results, and have been used to calibrate the numerical results and to develop a design database for reciprocating-type room-temperature magnetic heat pumps.

Chen, D.T. [Oak Ridge Associated Universities, Inc., TN (United States); Murphy, R.W.; Mei, V.C.; Chen, F.C.; Lue, J.W.; Lubell, M.S. [Oak Ridge National Lab., TN (United States)

1994-02-01T23:59:59.000Z

166

Regenerative oxidizer recovers 85% fume control energy, saves $350,000 annually  

SciTech Connect

Expansion of production for carbofuran insecticides increased ventilation requirements for fume and odor control from 8,000 to 50,000 scfm at FMC Corporation's Middleport, NY plant. A seven-lobe, closed thermal regenerative oxidation system was installed with heat recovery of up to 90%. Performance, operation, and results of the regenerative oxidizer are described. Almost a million gallons of oil are conserved annually which is equivalent to about 90% of plant requirements for steam generation.

McElhinney, R.

1980-05-01T23:59:59.000Z

167

Chapter 10 - Regenerative catalytic oxidizer technology for VOC control  

Science Journals Connector (OSTI)

Publisher Summary The regenerative catalytic oxidizer (RCO) technology has evolved significantly as an efficient method to control volatile organic compounds. The RCO technology favors using oxide catalysts because it allows for easy compensation of lower activity by an increase in the catalyst amount or temperature. Heat transfer and accumulation properties of ceramic packing material strongly influence RCO performance. The rate of heat transfer affects the temperature gradients along the bed length that, in turn, determine the volume of material required to preheat the gas to the temperature of catalytic or thermal oxidation. During the catalyst operation, it gradually becomes less active and must be eventually replaced. The factors affecting the catalyst lifetime include high temperature, catalytic poisons, and masking agents. Compounds of halogens and sulfur are the most common catalyst poisons. Temperature control, poison tolerant catalysts, and gas-flow pretreatment are used to reduce the impact of catalyst deactivation. This chapter also presents the behavior of an RCO when the catalyst deactivates, and proposes strategies ensuring the required performance during the entire catalyst lifetime.

V.O. Strots; G.A. Bunimovich; C.R. Roach; Yu.Sh. Matros

2000-01-01T23:59:59.000Z

168

Computer controlled synchronous shifting of an automatic transmission  

DOE Patents (OSTI)

A multiple forward speed automatic transmission produces its lowest forward speed ratio when a hydraulic clutch and hydraulic brake are disengaged and a one-way clutch connects a ring gear to the transmission casing. Second forward speed ratio results when the hydraulic clutch is engaged to connect the ring gear to the planetary carrier of a second gear set. Reverse drive and regenerative operation result when an hydraulic brake fixes the planetary and the direction of power flow is reversed. Various sensors produce signals representing the torque at the output of the transmission or drive wheels, the speed of the power source, and the hydraulic pressure applied to a clutch and brake. A control algorithm produces input data representing a commanded upshift, a commanded downshift, a commanded transmission output torque, and commanded power source speed. A microprocessor processes the inputs and produces a response to them in accordance with the execution of a control algorithm. Output or response signals cause selective engagement and disengagement of the clutch and brake at a rate that satisfies the requirements for a short gear ratio change and smooth torque transfer between the friction elements.

Davis, Roy I. (9214 Abbey La., Ypsilanti, MI 48198); Patil, Prabhakar B. (10294 W. Outer Dr., Detroit, MI 48223)

1989-01-01T23:59:59.000Z

169

Treating isopropyl alcohol by a regenerative catalytic oxidizer  

Science Journals Connector (OSTI)

Regenerative catalytic oxidizer (RCO) can be conveniently used to control emissions of volatile organic compounds (VOCs), because of their thermal recovery efficiency (TRE), low fuel cost and high oxidation. In this work, catalysts with various metal weight loadings were prepared by depositionprecipitation, wet impregnation and incipient impregnation to treat isopropyl alcohol (IPA). We used the excellent catalytic performance in a pilot RCO to test IPA oxidation performance under various conditions. The best catalyst was selected and its TRE, bed temperature variations, pressure drops and selectivity of the catalyst were more widely discussed. The results demonstrate that the optimal catalyst was prepared by wet impregnation with 20wt.% metal on ceramic honeycomb (CH). 20wt.% CuCo/(CH) catalyst was the best catalyst used in a RCO because it was effective in treating IPA, with a CO2 yield of up to 95% at a heating zone temperature (Tset)=400C under various conditions. It also had the largest tolerance of variations in inlet IPA concentration and gas velocity (Ug). This 20wt.% CuCo/(CH) catalyst in a RCO performed well in terms of TRE, pressure drop and selectivity to CO2. The TRE range in a RCO was from 87.8 to 91.2% under various conditions, and decreased as Ug increased in a fixed Tset. The pressure drop increased with Ug and Tset. The selectivity to CO2 increased to over 95% at 300C, and that to propene remained at 25% from 200 to 400C. Finally, the stability test results indicated that the 20wt.% CuCo/(CH) catalyst was very stable at various CO2 yields and temperatures.

Jie-Chung Lou; Shih-Wei Huang

2008-01-01T23:59:59.000Z

170

The feasibility of a unitised regenerative fuel cell with a reversible carbon-based hydrogen storage electrode.  

E-Print Network (OSTI)

??This thesis seeks to experimentally demonstrate the possibility of reversible storage of hydrogen directly into a carbon-based electrode of a PEM unitised regenerative fuel cell. (more)

Jazaeri, M

2013-01-01T23:59:59.000Z

171

Adaptive scapula bone remodeling computational simulation: Relevance to regenerative medicine  

SciTech Connect

Shoulder arthroplasty success has been attributed to many factors including, bone quality, soft tissue balancing, surgeon experience, and implant design. Improved long-term success is primarily limited by glenoid implant loosening. Prosthesis design examines materials and shape and determines whether the design should withstand a lifetime of use. Finite element (FE) analyses have been extensively used to study stresses and strains produced in implants and bone. However, these static analyses only measure a moment in time and not the adaptive response to the altered environment produced by the therapeutic intervention. Computational analyses that integrate remodeling rules predict how bone will respond over time. Recent work has shown that subject-specific two- and three dimensional adaptive bone remodeling models are feasible and valid. Feasibility and validation were achieved computationally, simulating bone remodeling using an intact human scapula, initially resetting the scapular bone material properties to be uniform, numerically simulating sequential loading, and comparing the bone remodeling simulation results to the actual scapulas material properties. Three-dimensional scapula FE bone model was created using volumetric computed tomography images. Muscle and joint load and boundary conditions were applied based on values reported in the literature. Internal bone remodeling was based on element strain-energy density. Initially, all bone elements were assigned a homogeneous density. All loads were applied for 10 iterations. After every iteration, each bone elements remodeling stimulus was compared to its corresponding reference stimulus and its material properties modified. The simulation achieved convergence. At the end of the simulation the predicted and actual specimen bone apparent density were plotted and compared. Location of high and low predicted bone density was comparable to the actual specimen. High predicted bone density was greater than actual specimen. Low predicted bone density was lower than actual specimen. Differences were probably due to applied muscle and joint reaction loads, boundary conditions, and values of constants used. Work is underway to study this. Nonetheless, the results demonstrate three dimensional bone remodeling simulation validity and potential. Such adaptive predictions take physiological bone remodeling simulations one step closer to reality. Computational analyses are needed that integrate biological remodeling rules and predict how bone will respond over time. We expect the combination of computational static stress analyses together with adaptive bone remodeling simulations to become effective tools for regenerative medicine research.

Sharma, Gulshan B., E-mail: gbsharma@ucalgary.ca [Emory University, Department of Radiology and Imaging Sciences, Spine and Orthopaedic Center, Atlanta, Georgia 30329 (United States); University of Pittsburgh, Swanson School of Engineering, Department of Bioengineering, Pittsburgh, Pennsylvania 15213 (United States); University of Calgary, Schulich School of Engineering, Department of Mechanical and Manufacturing Engineering, Calgary, Alberta T2N 1N4 (Canada); Robertson, Douglas D., E-mail: douglas.d.robertson@emory.edu [Emory University, Department of Radiology and Imaging Sciences, Spine and Orthopaedic Center, Atlanta, Georgia 30329 (United States); University of Pittsburgh, Swanson School of Engineering, Department of Bioengineering, Pittsburgh, Pennsylvania 15213 (United States)

2013-07-01T23:59:59.000Z

172

Investigation of the part-load performance of two 1. 12 MW regenerative marine gas turbines  

SciTech Connect

Regenerative and intercooled-regenerative gas turbine engines with low pressure ratio have significant efficiency advantages over traditional aero-derivative engines of higher pressure ratios, and can compete with modern diesel engines for marine propulsion. Their performance is extremely sensitive to thermodynamic-cycle parameter choices and the type of components. The performance of two 1.12 MW (1,500 hp) regenerative gas turbines are predicted with computer simulations. One engine has a single-shaft configuration, and the other has a gas-generator/power-turbine combination. The latter arrangement is essential for wide off-design operating regime. The performance of each engine driving fixed-pitch and controllable-pitch propellers, or an AC electric bus (for electric-motor-driven propellers) is investigated. For commercial applications the controllable-pitch propeller may have efficiency advantages (depending on engine type and shaft arrangements). For military applications the electric drive provides better operational flexibility.

Korakianitis, T.; Beier, K.J. (Washington Univ., St. Louis, MO (United States). Dept. of Mechanical Engineering)

1994-04-01T23:59:59.000Z

173

Data Collection for Improved Cold Temperature Thermal Modeling  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

funding: 250k 2 Overview 3. Exh. waste heat 1. Heat transfer 2. Brake power * 1) 33% (loss, heat transfer) * 2) 33% (brake power) * 3) 33% (loss, exhaust waste) Energy in 3...

174

ENERGY HARVESTING, RIDE COMFORT, AND ROAD HANDLING OF REGENERATIVE VEHICLE SUSPENSIONS  

E-Print Network (OSTI)

, wheel and chasses masses to the vehicle performances and harvestable power are studied. Experiments power on a typical highway. Kawaoto et al [10] modeled a ball-screw type electromagnetic damper a regenerative suspension with a ball screw and three-phase motor of a real car on vibration test rig

Zuo, Lei

175

Corrosion Control Using Regenerative Biofilms on Aluminum 2024 and Brass in Different Media  

E-Print Network (OSTI)

Corrosion Control Using Regenerative Biofilms on Aluminum 2024 and Brass in Different Media F. Mansfeld,a, *,z H. Hsu,a D. O¨ rnek,b T. K. Wood,b and B. C. Syrettc a Corrosion and Environmental Effects Institute, Palo Alto, California 94303, USA The corrosion behavior of Al 2024-T3 and C26000 brass exposed

Wood, Thomas K.

176

Corrosion control using regenerative biofilms (CCURB) on brass in different media  

E-Print Network (OSTI)

Corrosion control using regenerative biofilms (CCURB) on brass in different media D. OOrnek a , T of Chemical Engineering, University of Connecticut, Storrs, CT 06269-3222, USA b Corrosion and Environmental The corrosion behavior of cartridge brass (UNS C26000) exposed to artificial seawater (AS) and Luria Bertani (LB

Wood, Thomas K.

177

Pitting corrosion control using regenerative biolms on aluminium 2024 in articial seawater  

E-Print Network (OSTI)

Pitting corrosion control using regenerative bio®lms on aluminium 2024 in arti®cial seawater D, CT 06269-3222, USA b Corrosion and Environment Eects Laboratory (CEEL), Department of Materials polyglutamate or polyaspartate, an additional small increase in corrosion inhibition occurred. Corrosion control

Wood, Thomas K.

178

High-energy kHz Yb:KYW dual-crystal regenerative amplifier  

Science Journals Connector (OSTI)

A highly stable Yb:KYW based dual crystal regenerative amplifier is demonstrated, which generates at 1 kHz 6.5-mJ pulses before and up to 4.7-mJ sub-ps pulses after compression with...

Calendron, Anne-Laure; ankaya, Hseyin; Krtner, Franz X

2014-01-01T23:59:59.000Z

179

of Stem Cell Biology and Regenerative Medicine Forum" DateNov 27th  

E-Print Network (OSTI)

-Together ------------------------------------------------------------------------------------------------------------------------------------- Hosted by Center for Stem Cell Biology and Regenerative Medicine ---Information--- Please register with their cell doses having failed to meet the minimum standard. Overall, these facts boosted us to look by utilizing mouse transplantation models a proof of concept that combined multiple units of allogeneic

Miyashita, Yasushi

180

NREL: Fleet Test and Evaluation - Hydraulic Hybrid Drive Systems  

NLE Websites -- All DOE Office Websites (Extended Search)

Hydraulic Hybrid Drive Systems Hydraulic Hybrid Drive Systems NREL's Fleet Test and Evaluation Team conducts performance evaluations of hydraulic hybrid drive systems in delivery vehicles. Because hydraulic hybrids feature highly efficient regenerative braking systems and "engine off at idle" capabilities, they are ideal for parcel delivery applications where stop-and-go traffic is common. Hydraulic hybrid systems can capture up to 70% of the kinetic energy that would otherwise be lost during braking. This energy drives a pump, which transfers hydraulic fluid from a low-pressure reservoir to a high-pressure accumulator. When the vehicle accelerates, fluid in the high-pressure accumulator moves to the lower-pressure reservoir, which drives a motor and provides extra torque. This process can improve the vehicle's fuel economy

Note: This page contains sample records for the topic "brakes regenerative braking" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
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181

2009 BMW MINI EVAmerica fact sheet.pdf  

NLE Websites -- All DOE Office Websites (Extended Search)

3230 lb 3230 lb Delivered Curb Weight: 3306 lb Distribution F/R: 51/49 % GVWR: 3660 lb Payload 2 : 354 lb Performance Goal: 400 lb DIMENSIONS Wheelbase: 97.1 inches Track F/R: 57.4/57.8 inches Length: 145.6 inches Width: 66.3 inches Height: 55.4 inches Ground Clearance: 6.0 inches Performance Goal: 5.0 inches CHARGER Level 1: Location: On-board Type: Conductive Input Voltages: 120VAC Level 2: Location: Off-board Type: Conductive Input Voltages: 240 VAC © 2009 Electric Transportation Applications All Rights Reserved BASE VEHICLE: 2009 BMW MINI E Seatbelt Positions: Two Standard Features: Front Wheel Drive Front Disc and Rear Disc Brakes Regenerative Braking With Coast Down Three-Point Safety Belts Speedometer Odometer State-Of-Charge Meter BATTERY Type: Lithium Ion Number of Modules: 48

182

Microsoft Word - s10.html  

NLE Websites -- All DOE Office Websites (Extended Search)

Chevrolet S-10 Electric Chevrolet S-10 Electric w/NiMH VEHICLE SPECIFICATIONS PURPOSE-BUILT VEHICLE Base Vehicle: 1998 S-10 VIN: 1GCDE14H1W8122580 Seatbelt Positions: Three Standard Features: Heat Pump Climate Control System Auxillary Diesel Fuel Fired Heater (Only operates Below 37°F) Cruise Control Power Steering Tilt Steering Wheel 4-wheel Anti-Lock Power Assisted Brakes Regenerative Braking Propulsion Battery Thermal Management System Driver and Passenger-Side Air Bags (w/Passenger-Side Deactivation Switch) AM/FM Stereo Radio Half-Bed Tonneau Cover BATTERY Manufacturer: Ovonic Energy Products Type: Nickel Metal Hydride Number of Modules: 26 Weight of Module: 18.3 kg Weight of Pack(s): 490.5 kg Pack Locations: Underbody Nominal Module Voltage: 13.2 V

183

How Plug-in Hybrids Save Money  

NLE Websites -- All DOE Office Websites (Extended Search)

How Plug-in Hybrids Save Money How Plug-in Hybrids Save Money Plug-in hybrid recharging Plug-in hybrids reduce fuel costs by Using high-capacity batteries that allow them to operate on electricity from the outlet for significant distances-electricity typically costs less than half as much as gasoline Using a larger electric motor that typically allows the vehicle to use electricity at higher speeds than regular hybrids Using regenerative braking to recover energy typically wasted when you apply the brakes Plug-in hybrid designs differ, and your driving habits, especially the distance you drive between re-charging, can have a big effect on your fuel bill. My Plug-in Hybrid Calculator estimates gasoline and electricity costs for any available plug-in hybrid using your driving habits and fuel costs.

184

Oxygen-Enriched Combustion for Military Diesel Engine Generators  

Energy.gov (U.S. Department of Energy (DOE))

Substantial increases in brake power and considerably lower peak pressure can result from oxygen-enriched diesel combustion

185

MUSIC VENUES IN EXETERMUSIC VENUES IN EXETER EXETER'S MUSIC SCENEEXETER'S MUSIC SCENE  

E-Print Network (OSTI)

The Damned o Turin Brakes o Youngblood Brass Band #12;AROUND EXETERAROUND EXETER Cavern Club Live Music Venue

Mumby, Peter J.

186

Heavy-duty H2-Diesel Dual Fuel Engines  

Energy.gov (U.S. Department of Energy (DOE))

Brake thermal efficiency can be improved with the addition of a large amount of hydrogen at medium to high loads

187

www.ave.kth.se Rail Vehicles  

E-Print Network (OSTI)

brake systems and materials b. Wear calculation methodologies 2. Block-wheel contact mechanics study a and worn out profiles 3. Application to wheel wear calculation a. Isolated wheel and block b. Coupling: Modelling wheel wear caused by block brakes Background Most freight trains use block brakes, where

Haviland, David

188

Regenerative Feedback Resonant Circuit to Detect Transient Changes in Electromagnetic Properties of Semi-Insulating Materials  

SciTech Connect

A prototype regenerative feedback resonant circuit has been developed for measuring the transient spectral response due to perturbations in properties of various electromagnetic materials. The circuit can accommodate a variety of cavity resonators, shown here in the 8 GHz range, with passive quality factors (Qstat) as high as 7,000 depending upon material loading. The positive feedback enhanced dynamic quality factors (Qdyn) of resonator/material combinations in the regenerative circuit are on the order of 107 - 108. The theory, design, and implementation of the circuit is discussed along with real-time monitored example measurements of effects due to photon-induced charge carriers in high-resistivity silicon wafers and magnetic-field induced perturbations of yttrium-iron garnet.

Jones, Anthony M.; Kelly, James F.; Severtsen, Ronald H.; McCloy, John S.

2013-08-08T23:59:59.000Z

189

Regenerative thermal oxidizers for VOC and NO{sub x} -- efficiency and cost  

SciTech Connect

Regenerative fume incinerators or thermal oxidizers have a combustion chamber at about 1,600 F. Heat recovery is provided by switching regenerator beds filled with ceramic. Volatile organic compounds, VOC`s, are about 99% removed along with a thermal efficiency of 90 to 95%. Improvements are discussed which reduce fuel costs, reduce investment cost and give better VOC removal. A method of preventing NO{sub x} formation is presented as well as a possible method for removing NO{sub x} from incoming feed gas. Regenerative fume incinerators or regenerative thermal oxidizers have 3 possible improvements. (1) Add the required fuel to the incoming gas to nearly eliminate NO{sub x} generation while improving thermal efficiency. (2) Remove NO{sub x} from the incoming gas by a new modification of the Exxon Thermal DeNO{sub x} process. (3) Use a new 4-way valve for 1 or 2-bed regenerators to cut investment and improve destruction efficiency.

Houston, R. [Houston Consulting, Hendersonville, NC (United States)

1995-12-31T23:59:59.000Z

190

CMVRTC: Overweight Vehicle  

NLE Websites -- All DOE Office Websites (Extended Search)

Heavy and overweight vehicle brake testing for combination five-axle Heavy and overweight vehicle brake testing for combination five-axle tractor-flatbed scale The Federal Motor Carrier Safety Administration, in coordination with the Federal Highway Administration, sponsored the Heavy and Overweight Vehicle Brake Testing (HOVBT) program in order to provide information about the effect of gross vehicle weight (GVW) on braking performance. Because the Federal Motor Carrier Safety Regulations limit the number of braking system defects that may exist for a vehicle to be allowed to operate on the roadways, the examination of the effect of brake defects on brake performance for increased loads is also relevant. The HOVBT program seeks to provide relevant information to policy makers responsible for establishing load limits, beginning with providing test data for a

191

Integrated Modular Propulsion and Regenerative Electro-energy Storage System (IMPRESS) for small satellites  

SciTech Connect

The IMPRESS is a significant advancement in space system technology as it is able to operate alternately as a fuel cell to produce electrical power from stored hydrogen and oxygen and as a water electrolyzer using electrical power to produce hydrogen and oxygen from stored water. The electrolysis of a controllable fraction of stored water can provide high Isp rocket propellants on demand. The heart of the IMPRESS is the Unitized Regenerative Fuel Cell (URFC), which produces power and electrolytically regenerates its reactants using a single stack of reversible cells. This integrated approach has several significant advantages over separate (battery) power and propulsion systems.

Mitlitsky, F. [Lawrence Livermore National Lab., CA (United States); de Groot, W. [Nyma, Inc., Brook Park, OH (United States); Butler, L.; McElroy, J. [United Technologies Corp., Windsor Locks, CT (United States). Hamilton Standard Div.

1996-09-01T23:59:59.000Z

192

Full Hybrid: Stopped  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Braking button Stopped button Braking button Stopped button STOPPED When the vehicle is stopped, such as at a red light, the gasoline engine and electric motor shut off automatically so that energy is not wasted in idling. All other systems, including the electric air conditioning, continue to run. stage graphic: vertical blue rule Main stage: See through car with battery, engine, generator, power split device, and electric motor visible. the car is stopped at an intersection. Main stage: See through car with battery, engine, generator, power split device, and electric motor visible. the car is stopped at an intersection. Battery (highlighted): The battery stores energy generated from the gasoline engine or, during regenerative braking, from the electric motor. Since the battery powers the vehicle at low speeds, it is larger and holds much more energy than batteries used to start conventional vehicles. Main stage: See through car with battery, engine, generator, power split device, and electric motor visible. the car is stopped at an intersection. Main stage: See through car with battery, engine, generator, power split device, and electric motor visible. the car is stopped at an intersection.

193

Full Hybrid: Starting  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

highlighted Low Speed button Cruising button Passing button Braking button Stopped button highlighted Low Speed button Cruising button Passing button Braking button Stopped button STARTING When a full hybrid vehicle is initially started, the battery typically powers all accessories. The gasoline engine only starts if the battery needs to be charged or the accessories require more power than available from the battery. stage graphic: vertical blue rule Main stage: See through car with battery, engine, generator, power split device, and electric motor visible. the car is stopped at an intersection. Main stage: See through car with battery, engine, generator, power split device, and electric motor visible. the car is stopped at an intersection. Battery (highlighted): The battery stores energy generated from the gasoline engine or, during regenerative braking, from the electric motor. Since the battery powers the vehicle at low speeds, it is larger and holds much more energy than batteries used to start conventional vehicles. Main stage: See through car with battery, engine, generator, power split device, and electric motor visible. the car is stopped at an intersection. Main stage: See through car with battery, engine, generator, power split device, and electric motor visible. the car is stopped at an intersection.

194

Hybrid: Starting  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

button highlighted Cruising Button Passing Button Braking Button Stopped Button subbanner graphic: gray bar button highlighted Cruising Button Passing Button Braking Button Stopped Button subbanner graphic: gray bar STARTING When the vehicle is started, the gasoline engine "warms up." If necessary, the electric motor acts as a generator, converting energy from the engine into electricity and storing it in the battery. stage graphic: vertical blue rule Main stage: See through car with battery, engine, and electric motor visible. The car is moving. There are arrows flowing from the gasoline engine to the electric motor to the battery. Main stage: See through car with battery, engine, and electric motor visible. The car is moving. There are arrows flowing from the gasoline engine to the electric motor to the battery. Battery: The battery stores energy generated from the gasoline engine or, during regenerative braking, from the electric motor. Since the battery helps power the vehicle, it is larger and holds much more energy than batteries used to start conventional vehicles. Main stage: See through car with battery, engine, and electric motor visible. The car is moving. There are arrows flowing from the gasoline engine to the electric motor to the battery.

195

Double acting stirling engine phase control  

DOE Patents (OSTI)

A mechanical device for effecting a phase change between the expansion and compression volumes of a double-acting Stirling engine uses helical elements which produce opposite rotation of a pair of crankpins when a control rod is moved, so the phase between two pairs of pistons is changed by +.psi. and the phase between the other two pairs of pistons is changed by -.psi.. The phase can change beyond .psi.=90.degree. at which regenerative braking and then reversal of engine rotation occurs.

Berchowitz, David M. (Scotia, NY)

1983-01-01T23:59:59.000Z

196

ESS 2012 Peer Review - Novel Regenerative Fuel Cells based on Anion Exchange Membranes - Katherine Ayers, Proton Onsite  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

l l R ti F l C ll b d A i E h M b f Novel Regenerative Fuel Cells based on Anion Exchange Membranes for Novel Regenerative Fuel Cells based on Anion Exchange Membranes for g g Affordable Renewable Energy Storage Affordable Renewable Energy Storage Affordable Renewable Energy Storage PI: Dr Katherine Ayers Proton Energy Systems kayers@protononsite com PI: Dr. Katherine Ayers, Proton Energy Systems, kayers@protononsite.com y , gy y , y @p A h Key Challenges and Progress Approach Key Challenges and Progress Approach Key Challenges and Progress pp N PGM t l t ( l t l ) Fuel Cell Durability: Non-PGM catalysts (electrolyzer) * Leverage Proton experience in large scale Fuel Cell Durability: o G cata ysts (e ect o y e ) * Leverage Proton experience in large scale Anode flooding and cathode * Translation from RDE to cell results electrolysis and regenerative fuel

197

Study on The Effect of Regenerative System on Power Type Relative Internal Efficiency of Nuclear Steam Turbine  

Science Journals Connector (OSTI)

Nuclear steam turbine use wet steam as working medium, which is unable to determine the enthalpy drop type relative internal efficiency through exhaust enthalpy of steam, but the power type relative internal efficiency avoids this question. This paper introduced the calculate method of power type relative internal efficience, and then took a 900MW nuclear steam turbine for example, calculated the power type relative internal efficiency when the factors of regenerative system are changed. The result shows that when the factors of regenerative system are changed in a large range, the power type relative internal efficiency is nearly changeless, so the effect of regenerative system on relative internal efficiency can be neglected. At last, the independence between relative internal efficiency and ideal cycle heat efficiency is calculated and analyzed.

Yong Li; Chao Wang

2012-01-01T23:59:59.000Z

198

Study of Power Grid Connection with an Unstable Source from Elevator Energy Regenerative Unit (EERU)  

Science Journals Connector (OSTI)

Abstract This paper presents a study of power grid connection with an unstable source from elevator energy regenerative unit (EERU). The investigated system used a Permanent Magnet Synchronous Motor (PMSM). The EERU is installed for this system to generate electricity according to the generative mode of the elevator which delivers power to the grid as an unstable power source. To meet standard specifications in term of power quality and safety for grid connection, the phase angle and the amplitude as well as the frequency of the grid voltage are considered for grid connection. Phase lock loop (PLL) algorithm is therefore very important and selected for grid synchronization. The study is done by simulation using Matlab/Simulink program. The simulation used phase lock loop to synchronize between two systems. The results of this simulation will lead to a proper design of the grid connection with EERU as an unstable power source.

A. Noppakant; B. Plangklang; Y. Paraken

2014-01-01T23:59:59.000Z

199

Stripping of organic compounds from wastewater as an auxiliary fuel of regenerative thermal oxidizer  

Science Journals Connector (OSTI)

Organic solvents with different volatilities are widely used in various processes and generate air and water pollution problems. In the cleaning processes of electronics industries, most volatile organic compounds (VOCs) are vented to air pollution control devices while most non-volatile organic solvents dissolve in the cleaning water and become the major sources of COD in wastewater. Discharging a high-COD wastewater stream to wastewater treatment facility often disturbs the treatment performance. A pretreatment of the high-COD wastewater is therefore highly desirable. This study used a packed-bed stripping tower in combination with a regenerative thermal oxidizer to remove the COD in the wastewater from a printed circuit board manufacturing process and to utilize the stripped organic compounds as the auxiliary fuel of the RTO. The experimental results showed that up to 45% of the COD could be removed and 66% of the RTO fuel could be saved by the combined treatment system.

Meng-Wen Chang; Jia-Ming Chern

2009-01-01T23:59:59.000Z

200

CMVRTC: Past Research  

NLE Websites -- All DOE Office Websites (Extended Search)

Past reseach projects Past reseach projects ABS Indication Lamp Study -- More to come... Brake Wear and Performance Test (BWPT) -- Performance-Based Brake Testers (PBBTs) are devices that can be used to evaluate the current braking capabilities of a vehicle through the measurement of brake forces developed as a vehicle engages in a braking event while on a PBBT machine. The Federal Motor Carrier Safety Administration (FMSCA) passed legislation on February 5, 2003, allowing a PBBT that meets the FMCSA functional specifications to be used as an enforcement tool. (Read more ...) Heavy and Overweight Vehicle Brake Testing (HOVBT): Five-Axle Combination Tractor-Flatbed -- The HOVBT program was designed to provide information about the effect of gross vehicle weight (GVW) on braking performance. Because the Federal Motor Carrier Safety Regulations (FMCSRs) limit the number of braking system defects that may exist for a vehicle to be allowed to operate on the roadways, the examination of the effect of brake defects on brake performance for increased loads is also relevant. The HOVBT program seeks to provide relevant information to policy makers responsible for establishing load limits, beginning with providing test data for a combination tractor/trailer. (Read more ... )

Note: This page contains sample records for the topic "brakes regenerative braking" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

Design optimization of the electrically peaking hybrid (ELPH) vehicle. Research report  

SciTech Connect

Electrically Peaking Hybrid (ELPH) is a parallel hybrid electric vehicle propulsion concept that was invented at Texas A and M University, by the advanced vehicle systems research group. Over the past six years, design methodologies, component development, and system optimization work has been going on for this invention. This project was a first attempt in integrating the above developments into an optimized design of an ELPH passenger car. Design specifications were chosen for a full size passenger car, performing as well as any conventional car, over the EPA-FTP-75 combined city/highway drive cycles. The results of this design project were two propulsion systems. Both were appropriate for commercial production, from the points of view of cost, availability of the technologies, and components. One utilized regenerative braking and the other did not. Substantial fuel savings and emissions reductions resulted from simulating these designs on the FTP-75 drive cycle. For example, the authors` ELPH full size car, with regenerative braking, was capable of delivering over 50 miles per gallon in city driving, with corresponding reductions in its emissions. This project established the viability of the authors` ELPH concept and their design methodologies, in computer simulations. More work remains to be done on investigating more advanced power plants, such as fuel cells, and more advanced components, such as switched reluctance motor drives, for the authors` designs. Furthermore, the authors` design optimization can be carried out to more detailed levels, for prototyping and production.

Ehsani, M.; Gao, Y.; Butler, K.

1998-10-01T23:59:59.000Z

202

An electromagnetic and thermodynamic lumped parameter model of an explosively driven regenerative magnetohydrodynamic generator  

SciTech Connect

The objective of this research is to develop a simple, yet accurate, lumped parameter mathematical model for an explosively driven magnetohydrodynamic generator that can predict the pulse power variables of voltage and current from startup through regenerative operation. The inputs to the model will be the plasma properties entering the generator as predicted by the explosive shock model of Reference [1]. The strategy used was to simplify electromagnetic and thermodynamic three dimensional effects into a zero dimensional model. The model will provide a convenient tool for researchers to optimize designs to be used in pulse power applications. The model is validated using experimental data of Reference [1]. An overview of the operation of the explosively driven generator is first presented. Then a simplified electrical circuit model that describes basic performance of the device is developed. Then a lumped parameter model that incorporates the coupled electromagnetic and thermodynamic effects that govern generator performance is described and developed. The model is based on fundamental physical principles and parameters that were either obtained directly from design data or estimated from experimental data. The model was used to obtain parameter sensitivities and predict beyond the limits observed in the experiments to the levels desired by the potential Department of Defense sponsors. The model identifies process limitations that provide direction for future research.

Morrison, J.L.

1992-12-01T23:59:59.000Z

203

Regeneratively cooled coal combustor/gasifier with integral dry ash removal  

DOE Patents (OSTI)

A coal combustor/gasifier is disclosed which produces a low or medium combustion gas for further combustion in modified oil or gas fired furnaces or boilers. Two concentric shells define a combustion volume within the inner shell and a plenum between them through which combustion air flows to provide regenerative cooling of the inner shell for dry ash operation. A fuel flow and a combustion air flow having opposed swirls are mixed and burned in a mixing-combustion portion of the combustion volume and the ash laden combustion products flow with a residual swirl into an ash separation region. The ash is cooled below the fusion temperature and is moved to the wall by centrifugal force where it is entrained in the cool wall boundary layer. The boundary layer is stabilized against ash re-entrainment as it is moved to an ash removal annulus by a flow of air from the plenum through slots in the inner shell, and by suction on an ash removal skimmer slot.

Beaufrere, Albert H. (Huntington, NY)

1983-10-04T23:59:59.000Z

204

Numerical evaluation of the energetic performances of structured and random packed beds in regenerative thermal oxidizers  

Science Journals Connector (OSTI)

Regenerative thermal oxidizers (RTO) can be conveniently used to control volatile organic components (VOC) emissions, because of their thermal efficiency and cost effectiveness. In the RTO technology, beds of inert material are used in order to heat the polluted air by cooling burnt gases, through a sequence of cyclic operations which cut the fuel requirements. A computational 1D unsteady model, able to account for both structured and random packed bed regenerators, is developed and applied to realistic plant conditions. Process thermal efficiency and gas pressure drop are calculated as functions of the system geometry and operating parameters. The code can be usefully employed in the analysis and design of RTO systems and in order to choose the more suitable type of regenerator, structured or random packed bed (even considering various particle shapes). Energetic performances of both random and structured regenerators were compared, showing that the first ones exhibit a little higher thermal efficiency but also an elevated pressure drop, at a same value of exchange surface per unit volume of the bed. Random packed bed regenerators resulted less attractive from the energetic point of view and their usage is advisable if their lower cost satisfy economical requirements.

Mario Amelio; Pietropaolo Morrone

2007-01-01T23:59:59.000Z

205

CX-002146: Categorical Exclusion Determination | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

46: Categorical Exclusion Determination 46: Categorical Exclusion Determination CX-002146: Categorical Exclusion Determination Wind Turbine Electric Brake Project CX(s) Applied: B3.6 Date: 02/22/2010 Location(s): Ohio Office(s): Energy Efficiency and Renewable Energy, Golden Field Office Parker Hannifin, Aircraft Wheel and Brake Division will use Congressionally Directed Funding through DOE to develop an electric brake system for wind turbine applications. Project activities will include additional testing and design work on the brake system prototype in a laboratory setting. Additional project activities will involve testing the prototype brake system on a currently installed 60 kilowatt turbine. A negotiated arrangement with a local wind turbine manufacturer (Green Energy Technologies) to evaluate the prototype brake on this turbine has been

206

CMVRTC: PBBT  

NLE Websites -- All DOE Office Websites (Extended Search)

performance based Brake tester (PBBt) performance based Brake tester (PBBt) PBBT The ORNL's Center for Transportation Analysis, in collaboration with the FMCSA and the Tennessee Highway Patrol (THP) Commercial Vehicle Enforcement (CVE), conducted a Performance-Based Brake Tester (PBBT) Valuation Study. The purpose of the study was to determine the PBBT's ability to increase the number of contacts with commercial motor vehicles (CMVs) and explore how the PBBT affects the CMV out-of-service (OOS) rate. The PBBT is a roller dynamometer which measures the vehicle's established brake force and calculates brake efficiency to indicate the effectiveness of the vehicle's brakes. Several test scenarios were employed using North American Standard (NAS) Level-1, 2, and 3 CMV inspection criteria. The first three scenarios employed both an NAS inspection (Level-1, 2, or 3)

207

Power production from a moderate temperature geothermal resource with regenerative Organic Rankine Cycles  

Science Journals Connector (OSTI)

Much remains to be done in binary geothermal power plant technology, especially for exploiting low-enthalpy resources. Due to the great variability of available resources (temperature, pressure, chemical composition), it is really difficult to standardize the technology.The problem involves many different variables: working fluid selection, heat recovery system definition, heat transfer surfaces sizing and auxiliary systems consumption. Electricity generation from geothermal resources is convenient if temperature of geothermal resources is higher than 130C. Extension of binary power technology to use low-temperature geothermal resources has received much attention in the last years. This paper analyzes and discusses the exploitation of low temperature, water-dominated geothermal fields with a specific attention to regenerative Organic Rankine Cycles (ORC). The geothermal fluid inlet temperatures considered are in the 100130C range, while the return temperature of the brine is assumed to be between 70 and 100C. The performances of different configurations, two basic cycle configurations and two recuperated cycles are analyzed and compared using dry organic fluids as the working fluids. The dry organic fluids for this study are R134a, isobutane, n-pentane and R245fa. Effects of the operating parameters such as turbine inlet temperature and pressure on the thermal efficiency, exergy destruction rate and Second Law efficiency are evaluated. The possible advantages of recuperated configurations in comparison with basic configurations are analyzed, showing that in a lot of cases the advantage in terms of performance increase is minimal but significant reductions in cooling systems surface area can be obtained (up to 20%).

Alessandro Franco

2011-01-01T23:59:59.000Z

208

Regenerative fuel cells for High Altitude Long Endurance Solar Powered Aircraft  

SciTech Connect

High Altitude Long Endurance (HALE) unmanned missions appear to be feasible using a lightweight, high efficiency, span-loaded, Solar Powered Aircraft (SPA) which includes a Regenerative Fuel Cell (RFC) system and novel tankage for energy storage. An existing flightworthy electric powered flying wing design was modified to incorporate present and near-term technologies in energy storage, power electronics, aerodynamics, and guidance and control in order to design philosophy was to work with vendors to identify affordable near-term technological opportunities that could be applied to existing designs in order to reduce weight, increase reliability, and maintain adequate efficiency of components for delivery within 18 months. The energy storage subsystem for a HALE SPA is a key driver for the entire vehicle because it can represent up to half of the vehicle weight and most missions of interest require the specific energy to be considerably higher than 200 W-hr/kg for many cycles. This stringent specific energy requirement precludes the use of rechargeable batteries or flywheels and suggests examination of various RFC designs. An RFC system using lightweight tankage, a single fuel cell (FC) stack, and a single electrolyzer (EC) stack separated by the length of a spar segment (up to 39 ft), has specific energy of {approximately}300 W-hr/kg with 45% efficiency, which is adequate for HALE SPA requirements. However, this design has complexity and weight penalties associated with thermal management, electrical wiring, plumbing, and structural weight. A more elegant solution is to use unitized RFC stacks (reversible stacks that act as both FCs and ECs) because these systems have superior specific energy, scale to smaller systems more favorably, and have intrinsically simpler thermal management.

Mitlitsky, F.; Colella, N.J.; Myers, B. [Lawrence Livermore National Lab., CA (United States); Anderson, C.J. [Aero Vironment, Inc., Monrovia, CA (United States)

1993-06-02T23:59:59.000Z

209

Regenerative air energy storage for remote winddiesel micro-grid communities  

Science Journals Connector (OSTI)

Abstract Remote communities beyond the reach of conventional electricity grids primarily rely on diesel generators (DG) to supply electricity. The systems in these communities are costly to operate because of the high price of transporting diesel to remote areas, and the low overall efficiencies caused by part-load operation of the DG. There is increasing interest to use wind energy converters (WEC) to supplement DG, thereby lowering the fuel consumption and operating costs. In order to use WEC to reduce the economic and environmental burden that DG have on remote communities, an energy storage system can be incorporated to buffer both generation and demand. This can avoid curtailment of the WEC, operate the DG at optimal efficiency, and reduce the necessary maximum installed generator capacities. Regenerative air energy storage (RAES) is a form of compressed air storage that is suitable for deployment in remote communities due to its ability to utilize waste heat from DG to boost the roundtrip efficiency of energy storage. This article presents a numerical model for a RAES system operating in a wind-diesel micro-grid. Simulations are run for varying WEC penetration levels and RAES energy capacities. The results show that in systems with WEC penetration less than 75%, increasing WEC capacity is more economic than adding a RAES system. Above penetration rates of 75%, the use of RAES achieves increased diesel savings with only slightly longer payback than simple wind-diesel systems. In the remote Canadian community case study, the optimal RAES system is 0.5MW and 1MWh with a WEC penetration rate of approximately 75%. A larger RAES results in further fuel savings, and thus environmental benefit, with only marginal increase in simple payback period.

Sebastian C. Manchester; Lukas G. Swan; Dominic Groulx

2014-01-01T23:59:59.000Z

210

Assessing benefits of coordination on safety in automated highway systems  

E-Print Network (OSTI)

Probability of a Collision with the Second Coordinated Braking Coiitrol Scheme 55 Collision of Two Vehicles in a Straight Track 56 20 Collision of Two Vehicles on the Curved (Richmond) Track 57 21 Velocity Profile of a Lead Car for Brake Saturation... in figure 4 is a plot of the distribution of the "effective" braking of following vehicles for the case I. The expected braking deceleration for this distribution is 0. 25 o 0. 2 o 0. 15 0. 1 g oos ~ 1st car p following cars P- N P- Pl P- Pv i- cv...

Choi, Woosuk

2012-06-07T23:59:59.000Z

211

E-Print Network 3.0 - arsenic additions Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

USING PTERIS VITTATA L... brake fern (Pteris vittata L.), an arsenic hyperaccumulator, on removal of arsenic ... Source: Ma, Lena - Soil and Water Science Department, University of...

212

Wear-Resistant, Nano-Composite Steel Coatings  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

bits, grinder hammer tips, and other hardware), and transportation (brakes, valve trains, bearings, and gears). Project Description The goal of the project is to develop laser...

213

Energy Department Announces $4 Million Solicitation for Solid...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

fluorescent lamps. SSL sources are already replacing conventional technologies in automobile brake lights, traffic signals, exit signs and flashlights. The solid-state lighting...

214

Secretary Chu's Remarks at the California Institute of Technology...  

Office of Environmental Management (EM)

computer tools with embedded energy analysis. It was the system integration of the automobile engine, transmission, brakes and battery that enabled Toyota to create the Prius....

215

Development of Dual-Fuel Engine for Class 8 Applications | Department...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Class 8 Applications Development of Dual-Fuel Engine for Class 8 Applications Highlights roadmap towards 55% brake thermal efficiency and progress to meet engine development goals...

216

UVM Outing Club Winter Group Equipment List  

E-Print Network (OSTI)

: _____ have gas tank full _____ add dry gas in extreme cold weather _____ disconnect battery NOTES: #12; _____ chains/cables _____ oil _____ extra antifreeze _____ brake and transmission fluids _____ scraper

Hayden, Nancy J.

217

Oxygen-Enriched Combustion for Military Diesel Engine Generators...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Combustion for Military Diesel Engine Generators Oxygen-Enriched Combustion for Military Diesel Engine Generators Substantial increases in brake power and considerably lower peak...

218

U.S. Department of Energy Categorical Exclusion ...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

operation of lathes, milling machines, grinder, saws, and machines of both manual and CNC type. Also the fabrication of assemblies within the confines of 749-A using brakes,...

219

1999 IMECE-PAPER#199 KOSTIC & TONG 1 1999 IMECE -INTERNATIONAL MECHANICAL ENGINEERING CONGRESS AND EXPOSITION, NASHVILLE, TENNESSEE, USA, 1999.  

E-Print Network (OSTI)

Kalb, Illinois 60115, USA 815/753-9975; kostic@ceet.niu.edu Haibo Tong Vapor Corp., A Westinghouse Air Brake Co

Kostic, Milivoje M.

220

E-Print Network 3.0 - antioxidant response element-mediated Sample...  

NLE Websites -- All DOE Office Websites (Extended Search)

brake fern (Pteris vittata L.) upon... adaptive biochemical responses such as production of antioxidant ... Source: Ma, Lena - Soil and Water Science Department, University...

Note: This page contains sample records for the topic "brakes regenerative braking" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

Development of Enabling Technologies for High Efficiency, Low...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

for HCCI Engine Pumping Friction Brake power Exhaust energy Incomplete combustion Other heat loss Engine heat loss % of fuel energy Collaborations - External *Program...

222

Data Collection for Improved Cold Temperature Thermal Modeling...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Vehicle Speed Dynamometer CAN measured Drive trace measurement Engine RPM CAN spark frequency Model input Brake Torque CAN Flywheel torque, model input Toil Dipstick...

223

Advanced Manufacturing Office Update, July 2014 | Department...  

Office of Environmental Management (EM)

demonstrating 50% brake thermal efficiency and NOx emissions that meet the most stringent air pollution standards. With typical reciprocating engine efficiencies around 35% at the...

224

Development and testing of improved heat transfer media for regenerative thermal oxidizers in the wood products industry  

SciTech Connect

Recently regenerative thermal oxidizers (RTOs) have been used to control gaseous hydrocarbon air pollutant emissions from wood products plants. Two major problems related to the ceramic saddle heat transfer matrix in conventional RTOs have been encountered, cold face fouling and breakdown of the ceramic matrix. A structured packing heat transfer media having straight airflow passages of constant cross section was developed to remedy these problems. Results of pilot scale testing has shown that the structured packing is resistant to cold face fouling and breakdown of the ceramic matrix. In addition, in a full scale retrofit application, improvements in pollutant reduction effectiveness and operating efficiency were measured. 5 refs., 3 figs., 2 tabs.

Klobucar, J.M. [Duerr Industries, Inc., Plymouth, MI (United States)

1996-12-31T23:59:59.000Z

225

News & Views ISSN 1746-075110.2217/RME.13.31 2013 Future Medicine Ltd Regen. Med. (2013) 8(4), 409412 409  

E-Print Network (OSTI)

News & Views ISSN 1746-075110.2217/RME.13.31 © 2013 Future Medicine Ltd Regen. Med. (2013) 8(4), 409­412 409 News & ViewsNews & ViewsNews & Views What first brought you from the engineering

Zandstra, Peter W.

226

Oxygen enriched combustion system performance study. Phase 2: 100 percent oxygen enriched combustion in regenerative glass melters, Final report  

SciTech Connect

The field test project described in this report was conducted to evaluate the energy and environmental performance of 100% oxygen enriched combustion (100% OEC) in regenerative glass melters. Additional objectives were to determine other impacts of 100% OEC on melter operation and glass quality, and to verify on a commercial scale that an on-site Pressure Swing Adsorption oxygen plant can reliably supply oxygen for glass melting with low electrical power consumption. The tests constituted Phase 2 of a cooperative project between the United States Department of Energy, and Praxair, Inc. Phase 1 of the project involved market and technical feasibility assessments of oxygen enriched combustion for a range of high temperature industrial heating applications. An assessment of oxygen supply options for these applications was also performed during Phase 1, which included performance evaluation of a pilot scale 1 ton per day PSA oxygen plant. Two regenerative container glass melters were converted to 100% OEC operation and served as host sites for Phase 2. A 75 ton per day end-fired melter at Carr-Lowrey Glass Company in Baltimore, Maryland, was temporarily converted to 100% OEC in mid- 1990. A 350 tpd cross-fired melter at Gallo Glass Company in Modesto, California was rebuilt for permanent commercial operation with 100% OEC in mid-1991. Initially, both of these melters were supplied with oxygen from liquid storage. Subsequently, in late 1992, a Pressure Swing Adsorption oxygen plant was installed at Gallo to supply oxygen for 100% OEC glass melting. The particular PSA plant design used at Gallo achieves maximum efficiency by cycling the adsorbent beds between pressurized and evacuated states, and is therefore referred to as a Vacuum/Pressure Swing Adsorption (VPSA) plant.

Tuson, G.B.; Kobayashi, H.; Campbell, M.J.

1994-08-01T23:59:59.000Z

227

November 18, 2009 22:50 Vehicle System Dynamics VSD09 Vehicle System Dynamics  

E-Print Network (OSTI)

November 18, 2009 22:50 Vehicle System Dynamics VSD09 Vehicle System Dynamics Vol. 00, No. 00), involving the steering and braking actuators. This VDSC aims at improving automotive vehicle yaw stability the rear wheels) and use the steering actuator only if it is necessary (e.g. if the braking system

Boyer, Edmond

228

Unspeciated organic emissions from combustion sources and their influence on the secondary organic aerosol budget in the United States  

Science Journals Connector (OSTI)

...Metals 16,213 Mobile Commercial Marine Vessels 14,406 Fuel Comb...Locomotives 25,435 Mobile Commercial Marine Vessels 25,374 Industrial...69 0.9 NA NA brake/tire wear NA NA 92009, 92087 0.005...4547 0.0 NA NA brake/tire wear NA NA 92009, 92087 0.002...

Shantanu H. Jathar; Timothy D. Gordon; Christopher J. Hennigan; Havala O. T. Pye; George Pouliot; Peter J. Adams; Neil M. Donahue; Allen L. Robinson

2014-01-01T23:59:59.000Z

229

Design of life-size haptic environments Yoky Matsuoka  

E-Print Network (OSTI)

, or software failure, a brake-actuated device is inherently incapable of exceeding the kinetic energy of motion while still allowing us to simulate virtual objects (i.e. to constrain the user's motion inside comparisons to active devices. Theo- retically, we demonstrate that brake-actuated devices surprisingly

Matsuoka, Yoky

230

The hypothalamicpituitaryadrenalleptin axis and metabolic health: a systems approach to resilience, robustness and control  

Science Journals Connector (OSTI)

...or our approximation of the CAR and the obese phenotype. Higher...feedback signalling (i.e. a defective brake), quantified by dynamic...as the brake is removed, the car speeds forward). Leptin has...cortisol awakening response (CAR) across the female menstrual...

2014-01-01T23:59:59.000Z

231

NATIONAL ENVIRONMENTAL RESEARCH INSTITUTE AARHUS UNIVERSITY  

E-Print Network (OSTI)

of the emission sources fuel consumption, engine oil, tyre wear, brake wear and road abrasion. The emission metals, road transport, fuel consumption, engine oil, tyre wear, brake wear, road abra- sion Layout: Ann.1 Metal content in fuels 15 2.2 Heavy metal emissions from fuel consumption 17 2.3 Engine oil and engine

232

Vehicle System Dynamics 0042-3114/01/3602-179$16.00 2001, Vol. 36, No. 23, pp. 179201 # Swets & Zeitlinger  

E-Print Network (OSTI)

& Zeitlinger Brake Valve Timing and Fuel Injection: a Uni®ed Engine Torque Actuator for Heavy-Duty Vehicles LASSE MOKLEGAARD1 , MARIA DRUZHININA2 and ANNA STEFANOPOULOU3 SUMMARY A uni®ed engine torque actuator engine model of a six cylinder, 350 Hp turbocharged diesel engine, equipped with a compression brake

Stefanopoulou, Anna

233

U.S. Energy Information Administration (EIA) - Sector  

Gasoline and Diesel Fuel Update (EIA)

0. Description of battery-powered electric vehicles 0. Description of battery-powered electric vehicles Vehicle type Description Micro or "mild" hybrid Vehicles with ICEs, larger batteries, and electrically powered auxiliary systems that allow the engine to be turned off when the vehicle is coasting or idle and then be quickly restarted. Regenerative braking recharges the batteries but does not provide power to the wheels for traction. Micro and mild hybrids are not connected to the electrical grid for recharging and are not considered as HEVs in this analysis. Full hybrid electric (HEV) Vehicles that combine an internal combustion engine with electric propulsion from an electric motor and battery. The vehicle battery is recharged by capturing some of the energy lost during braking. Stored energy is used to eliminate engine operation during idle, operate the vehicle at slow speeds for limited distances, and assist the ICE drivetrain throughout its drive cycle. Full HEV systems are configured in parallel, series, or power split systems, depending on how power is delivered to the drivetrain. HEVs are not connected to the electric grid for recharging.

234

A Bidirectional High-Power-Quality Grid Interface With a Novel Bidirectional Noninverted Buck Boost Converter for PHEVs  

SciTech Connect

Plug-in hybrid electric vehicles (PHEVs) will play a vital role in future sustainable transportation systems due to their potential in terms of energy security, decreased environmental impact, improved fuel economy, and better performance. Moreover, new regulations have been established to improve the collective gas mileage, cut greenhouse gas emissions, and reduce dependence on foreign oil. This paper primarily focuses on two major thrust areas of PHEVs. First, it introduces a grid-friendly bidirectional alternating current/direct current ac/dc dc/ac rectifier/inverter for facilitating vehicle-to-grid (V2G) integration of PHEVs. Second, it presents an integrated bidirectional noninverted buck boost converter that interfaces the energy storage device of the PHEV to the dc link in both grid-connected and driving modes. The proposed bidirectional converter has minimal grid-level disruptions in terms of power factor and total harmonic distortion, with less switching noise. The integrated bidirectional dc/dc converter assists the grid interface converter to track the charge/discharge power of the PHEV battery. In addition, while driving, the dc/dc converter provides a regulated dc link voltage to the motor drive and captures the braking energy during regenerative braking.

Onar, Omer C [ORNL

2012-01-01T23:59:59.000Z

235

Theoretical research on working fluid selection for a high-temperature regenerative transcritical dual-loop engine organic Rankine cycle  

Science Journals Connector (OSTI)

Abstract In this paper, a regenerative transcritical dual-loop organic Rankine cycle is proposed to recover the waste heat of the exhaust, engine coolant and all the residual heat of the HT loop. Double regenerators are adopted in this system. Transcritical cycles are used in both loops. Hexamethyldisiloxane (MM), octamethyl cyclotetrasiloxane (D4), octamethyltrisiloxane (MDM), cyclohexane, toluene and n-decane are chosen as the candidate working fluids of the HT loop and \\{R143a\\} is chosen as the working fluid of the LT loop. Influences of inlet temperature of turbine THT (T3) on mass flow rates (mf,HT and mf,LT), net output power (Wnet), energy conversion efficiency (?ec), volumetric expansion ratio (VER), ratio of power consumed to power output (COR) and component irreversibility are analyzed and performance comparison of these working fluids is also evaluated. Results show that toluene possesses the maximum Wnet (42.46kW), highest ?e (51.92%) and ?ec (12.77%). The increase of T3 worsens system performance, decreasing Wnet, ?e and ?ec. Condenser CLT and turbine TLT possess the least system irreversibility. In addition, turbines and exhaust evaporators are optimized components.

Hua Tian; Lina Liu; Gequn Shu; Haiqiao Wei; Xingyu Liang

2014-01-01T23:59:59.000Z

236

MonthlyReport  

NLE Websites -- All DOE Office Websites (Extended Search)

5 5 Overall AC electrical energy consumption (AC Wh/mi)¹ 111 Overall DC electrical energy consumption (DC Wh/mi)² 71 Overall DC electrical energy captured from regenerative braking (DC Wh/mi) 61 Total number of trips 1,135 Total distance traveled (mi) 4,408 Trips in Charge Depleting (CD) mode³ Gasoline fuel economy (mpg) 22 DC electrical energy consumption (DC Wh/mi) 296 Number of trips 264 Percent of trips city | highway 100% | 0% Distance traveled (mi) 781 Percent of total distance traveled 18% Trips in both Charge Depleting & Charge Sustaining (CD/CS) modes Gasoline fuel economy (mpg) 19 DC electrical energy consumption (DC Wh/mi) 141 Number of trips 44 Percent of trips city | highway 96% | 4% Distance traveled CD | CS (mi) 333 | 389 Percent of total distance traveled CD | CS

237

MonthlyReport  

NLE Websites -- All DOE Office Websites (Extended Search)

1 1 Overall AC electrical energy consumption (AC Wh/mi)¹ 93 Overall DC electrical energy consumption (DC Wh/mi)² 71 Overall DC electrical energy captured from regenerative braking (DC Wh/mi) 40 Total number of trips 11,047 Total distance traveled (mi) 119,879 Trips in Charge Depleting (CD) mode³ Gasoline fuel economy (mpg) 25 DC electrical energy consumption (DC Wh/mi) 208 Number of trips 4,491 Percent of trips city | highway 92% | 8% Distance traveled (mi) 30,376 Percent of total distance traveled 25% Trips in both Charge Depleting & Charge Sustaining (CD/CS) modes Gasoline fuel economy (mpg) 22 DC electrical energy consumption (DC Wh/mi) 71 Number of trips 1,352 Percent of trips city | highway 69% | 31% Distance traveled CD | CS (mi) 12,772 | 20,001 Percent of total distance traveled CD | CS

238

How Hybrids Work  

NLE Websites -- All DOE Office Websites (Extended Search)

How Hybrids Work How Hybrids Work Diagram of full hybrid vehicle components, including (1) an internal combustion engine, (2) an electric motor, (3) a generator, (4) a power split device, and (5) a high-capacity battery. Flash Animation: How Hybrids Work (Requires Flash 6.0 or higher) HTML Version: How Hybrids Work Hybrid-electric vehicles (HEVs) combine the benefits of gasoline engines and electric motors and can be configured to obtain different objectives, such as improved fuel economy, increased power, or additional auxiliary power for electronic devices and power tools. Some of the advanced technologies typically used by hybrids include Regenerative Braking. The electric motor applies resistance to the drivetrain causing the wheels to slow down. In return, the energy from the

239

U.S. Energy Information Administration (EIA) - Sector  

Gasoline and Diesel Fuel Update (EIA)

9. Vehicle types that do not rely solely on a gasoline internal combustion engine for motive and accessory power 9. Vehicle types that do not rely solely on a gasoline internal combustion engine for motive and accessory power Vehicle type Description Micro hybrid Vehicles with gasoline engines, larger batteries, and electrically powered auxiliary systems that allow the engine to be turned off when the vehicle is coasting or idling and then quickly restarted. Regenerative braking recharges the batteries but does not provide power to the wheels for traction. Hybrid electric (gasoline or diesel) Vehicles that combine internal combustion and electric propulsion engines but have limited all-electric range and batteries that cannot be recharged with grid power. Diesel Vehicles that use diesel fuel in a compression-ignition internal combustion engine. Plug-in hybrid electric Vehicles that use battery power for driving some distance, until a minimum level of

240

Simulations of the Fuel Economy and Emissions of Hybrid Transit Buses over Planned Local Routes  

SciTech Connect

We present simulated fuel economy and emissions city transit buses powered by conventional diesel engines and diesel-hybrid electric powertrains of varying size. Six representative city drive cycles were included in the study. In addition, we included previously published aftertreatment device models for control of CO, HC, NOx, and particulate matter (PM) emissions. Our results reveal that bus hybridization can significantly enhance fuel economy by reducing engine idling time, reducing demands for accessory loads, exploiting regenerative braking, and shifting engine operation to speeds and loads with higher fuel efficiency. Increased hybridization also tends to monotonically reduce engine-out emissions, but trends in the tailpipe (post-aftertreatment) emissions involve more complex interactions that significantly depend on motor size and drive cycle details.

Gao, Zhiming [ORNL] [ORNL; LaClair, Tim J [ORNL] [ORNL; Daw, C Stuart [ORNL] [ORNL; Smith, David E [ORNL] [ORNL; Franzese, Oscar [ORNL] [ORNL

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "brakes regenerative braking" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

Electric vehicle drive train with direct coupling transmission  

DOE Patents (OSTI)

An electric vehicle drive train includes an electric motor and an associated speed sensor, a transmission operable in a speed reduction mode or a direct coupled mode, and a controller responsive to the speed sensor for operating the transmission in the speed reduction mode when the motor is below a predetermined value, and for operating the motor in the direct coupled mode when the motor speed is above a predetermined value. The controller reduces the speed of the motor, such as by regeneratively braking the motor, when changing from the speed reduction mode to the direct coupled mode. The motor speed may be increased when changing from the direct coupled mode to the speed reduction mode. The transmission is preferably a single stage planetary gearbox.

Tankersley, Jerome B. (Fredericksburg, VA); Boothe, Richard W. (Roanoke, VA); Konrad, Charles E. (Roanoke, VA)

1995-01-01T23:59:59.000Z

242

Power Modulation Investigation for High Temperature (175-200 degrees Celcius) Automotive Application  

SciTech Connect

Hybrid electric vehicles were re-introduced in the late 1990s after a century dominated by purely internal combustion powered engines[1]. Automotive players, such as GM, Ford, DaimlerChrysler, Honda, and Toyota, together with major energy producers, such as BPAmoco, were the major force in the development of hybrid electric vehicles. Most notable was the development by Toyota of its Prius, which was launched in Japan in 1997 and worldwide in 2001. The shift to hybrids was driven by the fact that the sheer volume of vehicles on the road had begun to tax the ability of the environment to withstand the pollution of the internal combustion engine and the ability of the fossil fuel industry to produce a sufficient amount of refined gasoline. In addition, the number of vehicles was anticipated to rise exponentially with the increasing affluence of China and India. Over the last fifteen years, major advances have been made in all the technologies essential to hybrid vehicle success, including batteries, motors, power control and conditioning electronics, regenerative braking, and power sources, including fuel cells. Current hybrid electric vehicles are gasoline internal combustion--electric motor hybrids. These hybrid electric vehicles range from micro-hybrids, where a stop/start system cuts the engine while the vehicle is stopped, and mild hybrids where the stop/start system is supplemented by regenerative braking and power assist, to full hybrids where the combustion motor is optimized for electric power production, and there is full electric drive and full regenerative braking. PSA Peugeot Citroen estimates the increased energy efficiency will range from 3-6% for the micro-hybrids to 15-25% for the full hybrids.[2] Gasoline-electric hybrids are preferred in US because they permit long distance travel with low emissions and high gasoline mileage, while still using the existing refueling infrastructure. One of the most critical areas in which technology has been advancing has been the development of electronics that can operate in the high temperature environments present in hybrid vehicles. The temperatures under the hood for a gasoline-electric hybrid vehicle are comparable to those for traditional internal combustion engines. This is known to be a difficult environment with respect to commercial-grade electronics, as there are surface and ambient temperatures ranging from 125 C to 175 C. In addition, some hybrid drive electronics are placed in even harsher environments, such as on or near the brakes, where temperatures can reach 250 C. Furthermore, number of temperature cycles experienced by electronics in a hybrid vehicle is different from that experienced in a traditional vehicle. A traditional internal combustion vehicle will have the engine running for longer periods, whereas a mild or micro-hybrid engine will experience many more starts and stops.[3] This means that hybrid automotive electronics will undergo more cycles of a potential wider temperature cycle than standard automotive electronics, which in turn see temperature cycles of 2 to 3 times the magnitude of the {Delta}T = 50 C-75 C experienced by commercial-grade electronics. This study will discuss the effects of these harsh environments on the failure mechanisms and ultimate reliability of electronic systems developed for gasoline-electric hybrid vehicles. In addition, it will suggest technologies and components that can reasonably be expected to perform well in these environments. Finally, it will suggest areas where further research is needed or desirable. Areas for further research will be highlighted in bold, italic type. It should be noted that the first area where further research is desirable is in developing a clearer understanding of the actual hybrid automotive electronics environment and how to simulate it through accelerated testing, thus: Developing specific mission profiles and accelerated testing protocols for the underhood environment for hybrid cars, as has previously been done for gasoline-powered vehicles, is an important area for further st

McCluskey, F. P.

2007-04-30T23:59:59.000Z

243

Nanotechnology for regenerative medicine  

Science Journals Connector (OSTI)

Future biomaterials must simultaneously enhance tissue regeneration while minimizing immune responses and inhibiting infection. While the field of tissue engineering has promised to develop materials that can pro...

Dongwoo Khang; Joseph Carpenter; Young Wook Chun; Rajesh Pareta

2010-08-01T23:59:59.000Z

244

Thermal regenerative injector  

SciTech Connect

This patent describes an apparatus for injecting fuel and oxidizer into the combustion zone of an engine, comprising: a housing; means for receiving the fuel within the housing; means for preheating the fuel within the housing; a heat source external to the apparatus; means for transporting the fuel from the housing to the heat source wherein the fuel is heated; means for receiving the heated fuel within the housing; means for receiving the oxidizer within the housing; and means for injecting the oxidizer and the heated fuel from the housing into the combustion zone, the injection means being integral with the housing.

Wagner, W.R.

1987-11-24T23:59:59.000Z

245

VEHICLE SPECIFICATIONS Vehicle Features Base Vehicle: 2010 Smart  

NLE Websites -- All DOE Office Websites (Extended Search)

Smart Smart Fortwo MHD VIN: WME4513341K406476 Seatbelt Positions: 2 Standard Features: Air Conditioning Power Locks Power Steering Power Brakes Power Windows Cruise Control Front Disc Brakes Rear Drum Brakes Rear Wheel Drive Anti-Lock Brakes Traction Control Air Bags AM/FM Stereo with CD player Weights Design Curb Weight:1,818 lb Delivered Curb Weight: 1.742 lb Distribution F/R (%):44/56 GVWR: 2,244 lb GAWR F/R: 968/1,452 lb Payload 1 : 426 lb Performance Goal: 400 lb Dimensions Wheelbase: 73.5 in Track F/R: 50.5/54.5 in Length: 106.1 in Width: 61.4 in Height: 60.7 in Ground Clearance: 6.25 in Performance Goal: 5.0 in Tires Manufacturer: Continental Model: ContiproContact Size: Front -P155/60/R15

246

VEHICLE SPECIFICATIONS Vehicle Features  

NLE Websites -- All DOE Office Websites (Extended Search)

Mazda 3 Mazda 3 VIN: JMZBLA4G601111865 Seatbelt Positions: 5 Standard Features: Air Conditioning Power Locks Power Steering Power Brakes Power Windows Cruise Control Front Disc Brakes Rear Disc Brakes Front Wheel Drive Anti-Lock Brakes Traction Control Air Bags AM/FM Stereo with CD Weights Design Curb Weight: 2,954 lb Delivered Curb Weight: 2,850 lb Distribution F/R (%): 63/37 GVWR: 4,050 lb GAWR F/R: 2,057/1,896 lb Payload 1 : 1,096 lb Performance Goal: 400 lb Dimensions Wheelbase: 103.9 in Track F/R: 60.4/59.8 in Length: 175.6 in Width: 69.1 in Height: 57.9 in Ground Clearance: 6.1 in Performance Goal: 5.0 in Tires Manufacturer: Yokohama Model: YK520 Size: P205/55R17 Pressure F/R: 35/33 psi

247

Layout 1  

NLE Websites -- All DOE Office Websites (Extended Search)

COMMERCIAL MOTOR VEHICLE COMMERCIAL MOTOR VEHICLE ROADSIDE TECHNOLOGY CORRIDOR October 2009 Issue !4 Federal Motor Carrier Safety Administration Office of Analysis, Research, and Technology "In about 96 percent of cases there was not a statistically significant degradation of the brakes during the FOT." (Page 1) "Nearly 64 percent of vehicles flagged by SIRIS were placed OOS, and fully 77 percent were found to exhibit one or more safety flaws." (Page 3) Brake Wear and Performance FOT The Oak Ridge National Laboratory com- pleted the Brake Wear and Performance Test (BWPT) field operation test (FOT) and data analysis in September 2009. This effort in- cluded assisting the Tennessee Department of Safety (TDOS) in the procurement and installa- tion of a Performance-Based Brake Testing

248

INSTITUTE OF PHYSICS PUBLISHING JOURNAL OF PHYSICS D: APPLIED PHYSICS J. Phys. D: Appl. Phys. 38 (2005) 14021409 doi:10.1088/0022-3727/38/9/012  

E-Print Network (OSTI)

belt drives, brakes, tyres and clutches in automobiles and in other machines; gears devices; robotic manipulator joints; the motion of a human knee-joint (natural or artificial) and walking

Müftü, Sinan

249

Toolbox Safety Talk Forklift Operator Safety  

E-Print Network (OSTI)

, cart or hand truck instead of lifting and carrying items by hand can reduce the risk of employee back Forklift Inspection Checklist as needed. · Inspect operation of brakes, hydraulic controls, lights, back up

Pawlowski, Wojtek

250

RESEARCH ARTICLE Controlling speed and direction during interception  

E-Print Network (OSTI)

. Turning rate was controlled using a steering wheel and speed was controlled using a foot pedal (Wann and Land 2000), braking (Lee 1976; Yilmaz and Warren 1995), and fly ball catching (Chapman 1968

251

Robust yaw stability controller design and hardware-in-the-loop testing for a road vehicle  

E-Print Network (OSTI)

Unsymmetrical loading on a car like mu-split braking, side wind forces, or unilateral loss of tire pressure results in unexpected yaw disturbances that require yaw stabilization either by the driver or by an automatic ...

Guvenc, Levent

252

Transportation and its Infrastructure  

E-Print Network (OSTI)

Evaluation of Hybrid Diesel-Electric Transit Buses - Finalof braking energy in diesel-electric vehicles (see the webCNG buses, hybrid diesel-electric buses and taxi renovation)

2007-01-01T23:59:59.000Z

253

MLS Group | Open Energy Information  

Open Energy Info (EERE)

Zip: 77598 Sector: Wind energy Product: Designs and makes pitch control systems for wind turbines and wind turbine brakes in US and UK under license from Antec SA. References: MLS...

254

Supertruck technologies for 55% thermal efficiency and 68% freight...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

of Seasons (Summer, Winter, etc.) 5 Engine Losses Urban: 58-60% Interstate: 58-59% Aerodynamic Losses Urban: 4-10% Interstate: 15-22% Inertia Braking Urban: 15-20% Interstate:...

255

Cummins SuperTruck Program - Technology Demonstration of Highly...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

of Seasons (Summer, Winter, etc.) 5 Engine Losses Urban: 58-60% Interstate: 58-59% Aerodynamic Losses Urban: 4-10% Interstate: 15-22% Inertia Braking Urban: 15-20% Interstate:...

256

Alumni Contributions By Class Year Class of 1939 and Prior  

E-Print Network (OSTI)

Evans Frye Juanita Wheeler Healy Retha Mae Crase Herbert Martha H. Hiebel Eunice Garcia Holmes *Carolyn Bracht Vivian L. Buckles +Rev. Annabel Brake Clark +Marie Watkins Clontz +Katherine Keen Cowan #William E

Baltisberger, Jay H.

257

Crevice volume effect on spark ignition engine efficiency  

E-Print Network (OSTI)

A set of experiments and a simulation study are completed to quantify the effect of the piston crevice on engine efficiency. The simulation study breaks down the loss mechanisms on brake efficiency at different displacement ...

Smith, Patrick M. (Patrick Michael)

2013-01-01T23:59:59.000Z

258

Section6.8.doc  

E-Print Network (OSTI)

9) The electric current I, in amps, in a circuit varies directly as the voltage V. When 16 ... 10) The stopping distance d of a car (in feet) after the brakes have been...

259

Tire-Wear Particles as a Source of Zinc to the Environment  

E-Print Network (OSTI)

Zn (8). ThelargestanthropogenicsourcesofZntotheatmosphere are activities related to metal production fertilizer, and cement production (Table1).Znsourcestoairandwaterrelatedtotransportation activities include (11, 15), brake linings (11, 15, 16), and rubber tires (9, 12, 17). Tire-wear particles have been

260

Methanol: A Versatile Fuel for Immediate Use  

Science Journals Connector (OSTI)

...Specific fuel consumption-will certainly...necessitat-ing a larger fuel tank; but specific energy consumption (energy per...found that (i) fuel economy increased...Toyota (1900 cms engine, 85 brake horsepower...of knock and "Diesel operation...

T. B. Reed; R. M. Lerner

1973-12-28T23:59:59.000Z

Note: This page contains sample records for the topic "brakes regenerative braking" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Combustion and emission characteristics of a turbo-charged common rail diesel engine fuelled with diesel-biodiesel-DEE blends  

Science Journals Connector (OSTI)

The combustion and emission characteristics of a turbo-charged, common rail diesel engine fuelled with diesel-biodiesel-DEE blends were investigated. The study reports that the brake-specific fuel consumption of ...

Ni Zhang; Zuohua Huang; Xiangang Wang; Bin Zheng

2011-03-01T23:59:59.000Z

262

E-Print Network 3.0 - acoustic flight tests Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

signal produced by lead brake on metalic test piece 1 To analyse the signal... ACOUSTIC EMISSION IN AEROSPACE STRUCTURES P.J. Wells W.A. Wright Advanced Information...

263

Exhaust Heat Driven Rankine Cycle for a Heavy Duty Diesel Engine...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

progress to date and plans to develop a viable Rankine engine to harness useful brake power from wasted heat energy in heavy duty truck engine exhaust deer11singh.pdf More...

264

Carbon in the atmosphere and terrestrial biosphere in the 21st century  

Science Journals Connector (OSTI)

...rather than brake global warming. Keywords: climate change...and is a fingerprint of global human activity, a consequence of the combustion of coal, oil and gas that drives...dioxide increase is driving global warming, but there are other...

2002-01-01T23:59:59.000Z

265

Maintenance Sheet for 2013 Chevrolet Volt  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

0DU103929 Date Mileage Description Cost 342013 4,876 Replaced relay assembly, engine control module, and 12V battery - under warranty NC 342013 4,876 Reflashed parking brake...

266

Overview of the Advanced Combustion Engine R&D  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

high-efficiency engines using hydrocarbon-based (petroleum and non-petroleum) fuels and hydrogen Light-Duty Heavy-Duty 2010 2015 2015 2018 Engine brake thermal efficiency 45% 50%...

267

Vehicles | Open Energy Information  

Open Energy Info (EERE)

renewable and alternative fuels. Advanced vehicles and fuels can also put the brakes on air pollution and improve our environment. At least 250 million vehicles are in use in the...

268

Decentralized electric drives in the automobile  

Science Journals Connector (OSTI)

Decentralized control units and electric motors for brake assistant, engine management, climate control system, or chassis stabilization are already being used to control a variety of functions in the vehicle....

Andreas Rau

2006-11-01T23:59:59.000Z

269

Two Suicidal Fatalities Due to the Ingestion of Chlorfenvinphos Formulations: Simultaneous Determination of the Pesticide and the Petroleum Distillates in Tissues by Gas ChromatographyFlame-Ionization Detection and Gas ChromatographyMass Spectrometry  

Science Journals Connector (OSTI)

......multiple containers containing automobile products nearby. The stomach...brake fluid, oil, and other automobile products nearby. The autopsy...were homogenized using an electric mixer blender model Ultraturrax...multiple containers containing automobile products nearby. The stomach......

Mara A. Martnez; Salom Ballesteros

2012-01-01T23:59:59.000Z

270

LANL debuts hybrid garbage truck  

NLE Websites -- All DOE Office Websites (Extended Search)

Hybrid garbage truck LANL debuts hybrid garbage truck The truck employs a system that stores energy from braking and uses that pressure to help the truck accelerate after each...

271

Maintenance Records for 2010 Ford Fusion vin#4757  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Ford Fusion VIN 3FADP0L34AR144757 Date Mileage Description Cost 1142010 6,330 Changed oil and filter and inspected brake system 46.83 2112010 12,302 Changed oil and filter...

272

Maintenance Records for 2010 Toyota Prius vin#0462  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

DU2A5010462 Date Mileage Description Cost 11232009 5,935 Changed oil and filter, rotated tires, and inspected brakes 31.75 12182009 13,330 Changed oil and filter and inspected...

273

Maintenance Records for 2010 Honda Insight EX vin 0141  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Insight EX VIN JHMZE2H78AS010141 Date Mileage Description Cost 12102009 5,947 Changed oil and filter and inspected brake system 30.44 252010 11,011 Changed oil and filter and...

274

Chapter 9 -Forklift Operations Forklift Operations Safety Rules  

E-Print Network (OSTI)

, or hazardous locations. 19. Operators should not put their fingers, arms, or legs between the uprights that horn, lights, brakes, tires, gas supply, hydraulic lines, etc. are in safe working condition. Employees

275

Fault-tolerant control design for trajectory tracking in driver assistance systems  

E-Print Network (OSTI)

-wheel-distributed traction/braking sys- tems was proposed by Ono et al. (2006). A yaw stability control system in whichFault-tolerant control design for trajectory tracking in driver assistance systems Bal´azs N.sename;luc.dugard}@gipsa-lab.grenoble-inp.fr Abstract: The paper proposes a control system with the brake and the steering for developing a driver

Paris-Sud XI, Université de

276

Motorized control for mirror mount apparatus  

DOE Patents (OSTI)

A motorized control and automatic braking system for adjusting mirror mount apparatus is disclosed. The motor control includes a planetary gear arrangement to provide improved pitch adjustment capability while permitting a small packaged design. The motor control for mirror mount adjustment is suitable for laser beam propagation applications. The brake is a system of constant contact, floating detents which engage the planetary gear at selected between-teeth increments to stop rotation instantaneously when the drive motor stops.

Cutburth, Ronald W. (Tracy, CA)

1989-01-01T23:59:59.000Z

277

Note: Index has not been updated to reflect revisions to Chapters 2, 5 and new 11. AASHTO Green Book, 3-21 ballistic, 3-8  

E-Print Network (OSTI)

, 6-20 aging eyes, 3-16 air pollutant levels, 7-15 air pollutants, 7-13, 7-14 air pollution, 7-13 air-8 bifurcation behavior, 5-15 acceleration control, 3-24 block length, average, 6-20, 6-20, 6-22 acceleration-36 adaptive signals, 9-19 brake and carburetion systems, 7-8 adaptive signal control, 9-27 braking inputs, 3

Bertini, Robert L.

278

Development of a He{sup 3}?He{sup 4} sub Kelvin active magnetic regenerative refrigerator (AMRR) with no moving parts  

SciTech Connect

Current state of the art particle and photon detectors such as Transition Edge Sensors (TES) and Microwave Kinetic Inductance Detectors (MKID) use large arrays of sensors or detectors for space science missions. As the size of these space science detectors increases, future astrophysics missions will require sub-Kelvin cooling over larger areas. This leads to not only increased cooling power requirements, but also a requirement for distributed sub-Kelvin cooling. We propose an active Magnetic Regenerative Refrigerator (AMRR) that uses a Superfluid Magnetic Pump (SMP) to circulate liquid He{sup 3}?He{sup 4} through a magnetic regenerator to provide the necessary cooling at sub-Kelvin temperatures. Such system will be capable of distributing the cooling load to a relatively large array of objects. One advantage of using a fluid for heat transfer in such systems is to isolate components such as the superconducting magnets from detectors that are sensitive to magnetic fields. Another advantage of the proposed tandem AMRR is that it does not need Gas Gap Heat Switches (GGHS) to transfer heat during various stages of the magnetic cooling. Our proposed system consists of four superconducting magnets, one superleak, and three heat exchangers. It will operate continuously with no moving parts and it will be capable of providing the necessary cooling at sub-Kelvin temperatures for future space science applications.

Jahromi, A. E. [Ph.D. student, University of Wisconsin -1500 Engineering Drive, 1335 ERB, Madison, WI, 53706 (United States); Miller, F. K. [Assistant Professor of Mechanical Engineering, University of Wisconsin - 1500 Engineering Drive, 1341 ERB Madison, WI 53706 (United States)

2014-01-29T23:59:59.000Z

279

Development of efficiency-enhanced cogeneration system utilizing high-temperature exhaust-gas from a regenerative thermal oxidizer for waste volatile-organic-compound gases  

Science Journals Connector (OSTI)

We have developed a gas-turbine cogeneration system that makes effective use of the calorific value of the volatile organic compound (VOC) gases exhausted during production processes at a manufacturing plant. The system utilizes the high-temperature exhaust-gas from the regenerative thermal oxidizer (RTO) which is used for incinerating VOC gases. The high-temperature exhaust gas is employed to resuperheat the steam injected into the gasturbine. The steam-injection temperature raised in this way increases the heat input, resulting in the improved efficiency of the gas-turbine. Based on the actual operation of the system, we obtained the following results: Operation with the steam-injection temperature at 300C (45C resuperheated from 255C) increased the efficiency of the gasturbine by 0.7%. The system can enhance the efficiency by 1.3% when the steam-injection temperature is elevated to 340C (85C resuperheated). In this case, up to 6.6 million yen of the total energy cost and 400 tons of carbon dioxide (CO2) emissions can be reduced annually. A gas-turbine cogeneration and RTO system can reduce energy consumption by 23% and CO2 emission by 30.1% at the plant.

Masaaki Bannai; Akira Houkabe; Masahiko Furukawa; Takao Kashiwagi; Atsushi Akisawa; Takuya Yoshida; Hiroyuki Yamada

2006-01-01T23:59:59.000Z

280

Performance analysis of regenerative organic Rankine cycle (RORC) using the pure working fluid and the zeotropic mixture over the whole operating range of a diesel engine  

Science Journals Connector (OSTI)

Abstract A regenerative organic Rankine cycle (RORC) system is designed to recover the exhaust heat of a diesel engine, and the influence of the intermediate pressure (the pressures at which the steam is extracted from the expander) on performance parameters such as net power output, thermal efficiency and mass flow rate of the working fluid are analyzed. The organic working fluids under investigation are \\{R245fa\\} and the zeotropic mixture isopentane/R245fa (in a 0.7/0.3mol fraction). Based on initial calculations of RORC system performance, the intermediate pressure is set to 1.15MPa for the RORC system when using isopentane/R245fa (in a 0.7/0.3mol fraction) as the working fluid, and 1.2MPa when using \\{R245fa\\} as the working fluid. A performance analysis of the RORC system using the two different working fluids is then conducted over the whole operating range of a diesel engine. The results show that the zeotropic mixture isopentane/R245fa (in a 0.7/0.3mol fraction) performs better. Finally, a combined diesel engine and RORC system is defined to evaluate the performance improvement of such a combined system over the whole operating range. Results show that, for the combined system, a 10.54% improvement in power output and a 9.55% improvement in fuel economy can be achieved at the engines rated condition.

Jian Zhang; Hongguang Zhang; Kai Yang; Fubin Yang; Zhen Wang; Guangyao Zhao; Hao Liu; Enhua Wang; Baofeng Yao

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "brakes regenerative braking" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Response surface methodology based prediction of engine performance and exhaust emissions of a diesel engine fuelled with canola oil methyl ester  

Science Journals Connector (OSTI)

The objective of this study was to investigate the effect of fuel injection timing and engine speed on engine performance and exhaust emission parameters using a diesel engine running on canola oil methyl ester (COME). COME was produced by means of the transesterification method and tested at full load with various engine speeds by changing fuel injection timing (12 15 and 18?CA) in a turbocharged direct injection (TDI) diesel engine. The experiments were designed using response surface methodology (RSM) which is one of the well-known design of experiment technique for predicting the responses engine performance and exhaust emission parameters from a second order polynomial equation obtained by modeling the relation between fuel injection timing (t) and engine speed (n) parameters. By using the second order full quadratic RSM models obtained from experimental results responses brake power brake torque brake mean effective pressure brake specific fuel consumption brake thermal efficiency exhaust gas temperature oxygen (O2) oxides of nitrogen (NOx) carbon dioxide (CO2) carbon monoxide (CO) and light absorption coefficient (K) affected from factors t and n were able to be predicted by 95% confidence interval.

2013-01-01T23:59:59.000Z

282

Turbulent drag reduction through oscillating discs  

E-Print Network (OSTI)

The changes of a turbulent channel flow subjected to oscillations of wall flush-mounted rigid discs are studied by means of direct numerical simulations. The Reynolds number is $R_\\tau$=$180$, based on the friction velocity of the stationary-wall case and the half channel height. The primary effect of the wall forcing is the sustained reduction of wall-shear stress, which reaches a maximum of 20%. A parametric study on the disc diameter, maximum tip velocity, and oscillation period is presented, with the aim to identify the optimal parameters which guarantee maximum drag reduction and maximum net energy saving, computed by taking into account the power spent to actuate the discs. This may be positive and reaches 6%. The Rosenblat viscous pump flow is used to predict the power spent for disc motion in the turbulent channel flow and to estimate localized and transient regions over the disc surface subjected to the turbulent regenerative braking effect, for which the wall turbulence exerts work on the discs. The...

Wise, Daniel J

2014-01-01T23:59:59.000Z

283

4.12 - Hydrogen and Fuel Cells in Transport  

Science Journals Connector (OSTI)

Abstract This chapter reviews the several applications of hydrogen and fuel cells in transport. Early fuel cell markets have tested hydrogen for auxiliary power applications, but other fuels such as methanol, natural gas, and propane have been preferred because they are more available. Until now, the best successes have been forklifts where battery propulsion can be inflexible and hydrogen competes economically. However, the mainstream medium-term market is in buses, taxis, and fleet vehicles with passenger cars following close behind as the infrastructure of hydrogen filling stations becomes more widespread. It is becoming clear that the hybrid fuel cell/battery combination works best in such fleets because there is a need for batteries or supercapacitors providing pulse power and also for regenerative braking. Boats and ships represent a possible application in later years if the leisure market can be tapped and extended. In ports, fuel cell auxiliary power has already proved attractive in terms of emission reductions, and the same is true for airports. Aircraft applications will take longer to develop fully but small lightweight planes are using hydrogen at the present time because it can be generated via solar cells on the wings. Unmanned air vehicles driven by fuel cells are more likely to use propane because such lightweight fuel is easily available

K. Kendall; B.G. Pollet

2012-01-01T23:59:59.000Z

284

An Optimization Model for Plug-In Hybrid Electric Vehicles  

SciTech Connect

The necessity for environmentally conscious vehicle designs in conjunction with increasing concerns regarding U.S. dependency on foreign oil and climate change have induced significant investment towards enhancing the propulsion portfolio with new technologies. More recently, plug-in hybrid electric vehicles (PHEVs) have held great intuitive appeal and have attracted considerable attention. PHEVs have the potential to reduce petroleum consumption and greenhouse gas (GHG) emissions in the commercial transportation sector. They are especially appealing in situations where daily commuting is within a small amount of miles with excessive stop-and-go driving. The research effort outlined in this paper aims to investigate the implications of motor/generator and battery size on fuel economy and GHG emissions in a medium-duty PHEV. An optimization framework is developed and applied to two different parallel powertrain configurations, e.g., pre-transmission and post-transmission, to derive the optimal design with respect to motor/generator and battery size. A comparison between the conventional and PHEV configurations with equivalent size and performance under the same driving conditions is conducted, thus allowing an assessment of the fuel economy and GHG emissions potential improvement. The post-transmission parallel configuration yields higher fuel economy and less GHG emissions compared to pre-transmission configuration partly attributable to the enhanced regenerative braking efficiency.

Malikopoulos, Andreas [ORNL] [ORNL; Smith, David E [ORNL] [ORNL

2011-01-01T23:59:59.000Z

285

Investigating the low-temperature impedance increase of lithium-ion cells.  

SciTech Connect

Low-temperature performance loss is a significant barrier to commercialization of lithium-ion cells in hybrid electric vehicles. Increased impedance, especially at temperatures below 0 C, reduces the cell pulse power performance required for cold engine starts, quick acceleration, or regenerative braking. Here we detail electrochemical impedance spectroscopy data on binder- and carbon-free layered-oxide and spinel-oxide electrodes, obtained over the +30 to ?30 C temperature range, in coin cells containing a lithium-preloaded Li{sub 4/3}Ti{sub 5/3}O{sub 4} composite (LTOc) counter electrode and a LiPF{sub 6}-bearing ethylene carbonate/ethyl methyl carbonate electrolyte. For all electrodes studied, the impedance increased with decreasing cell temperature; the increases observed in the midfrequency arc dwarfed the increases in ohmic resistance and diffusional impedance. Our data suggest that the movement of lithium ions across the electrochemical interface on the active material may have been increasingly hindered at lower temperatures, especially below 0 C. Low-temperature performance may be improved by modifying the electrolyte-active material interface (for example, through electrolyte composition changes). Increasing surface area of active particles (for example, through nanoparticle use) can lower the initial electrode impedance and lead to lower cell impedances at -30 C.

Abraham, D. P.; Heaton, J. R.; Kang, S.-H.; Dees, D. W.; Jansen, A. N.; Chemical Engineering

2008-01-01T23:59:59.000Z

286

Understanding fuel savings mechanisms from hybrid vehicles to guide optimal battery sizing for India  

Science Journals Connector (OSTI)

Global transportation-related CO2 emissions are expected to substantially increase by 2050, with a majority of growth coming from rapidly developing countries like India. To understand the potential for using hybrid vehicles to limit the CO2 emissions growth, this paper compares driving conditions and the fuel savings potential of hybrids in the USA and India. It is shown that hybrids offer more fuel savings potential in India than in the USA, largely because of the limited highway driving in India. In order of relative importance, the analysis shows that fuel savings from power-split hybrids come from: 1) enabling higher efficiency engine operation; 2) energy recovered from regenerative braking; 3) engine shutdown. This understanding of the fuel savings mechanisms of hybrids and their relative importance is used in assessing how smaller battery capacities for hybrids in India can be used to reduce costs for this highly cost-sensitive market while preserving fuel savings. A parametric analysis of battery size on fuel savings mechanisms is carried out, and it is shown that hybrid vehicles for Indian driving conditions should ideally have a power capacity between 15 and 20 kW, with 10 kW as a lower limit.

Samveg Saxena; Amol Phadke; Anand Gopal; Venkat Srinivasan

2014-01-01T23:59:59.000Z

287

CONCEPTUAL DESIGN AND OPTIMAL POWER CONTROL STRATEGY FOR AN ECO?FRIENDLY HYBRID VEHICLE  

Science Journals Connector (OSTI)

This paper presents a new concept for a hybrid vehicle using a torque and speed splitting technique. It is implemented by the newly developed controller in combination with a two degree of freedom epicyclic gear transmission. This approach enables optimization of the power split between the less powerful electrical motor and more powerful engine while driving a car load. The power split is fundamentally a dual?energy integration mechanism as it is implemented by using the epicyclic gear transmission that has two inputs and one output for a proper power distribution. The developed power split control system manages the operation of both the inputs to have a known output with the condition of maintaining optimum operating efficiency of the internal combustion engine and electrical motor. This system has a huge potential as it is possible to integrate all the features of hybrid vehicle known to?date such as the regenerative braking system series hybrid parallel hybrid series/parallel hybrid and even complex hybrid (bidirectional). By using the new power split system it is possible to further reduce fuel consumption and increase overall efficiency.

N. Mir Nasiri; Frederick T. A. Chieng

2011-01-01T23:59:59.000Z

288

Extending the Constant Power Speed Range of the Brushless DC Motor through Dual Mode Inverter Control -- Part I: Theory and Simulation  

SciTech Connect

An inverter topology and control scheme has been developed that can drive low-inductance, surface-mounted permanent magnet motors over the wide constant power speed range required in electric vehicle applications. This new controller is called the dual-mode inverter control (DMIC) [1]. The DMIC can drive either the Permanent Magnet Synchronous Machine (PMSM) with sinusoidal back emf, or the brushless dc machine (BDCM) with trapezoidal emf in the motoring and regenerative braking modes. In this paper we concentrate on the BDCM under high-speed motoring conditions. Simulation results show that if all motor and inverter loss mechanisms are neglected, the constant power speed range of the DMIC is infinite. The simulation results are supported by closed form expressions for peak and rms motor current and average power derived from analytical solution to the differential equations governing the DMIC/BDCM drive for the lossless case. The analytical solution shows that the range of motor inductance that can be accommodated by the DMIC is more than an order of magnitude such that the DMIC is compatible with both low- and high-inductance BDCMs. Finally, method is given for integrating the classical hysteresis band current control, used for motor control below base speed, with the phase advance of DMIC that is applied above base speed. The power versus speed performance of the DMIC is then simulated across the entire speed range.

Lawler, J.S.

2001-10-29T23:59:59.000Z

289

TMV Technology Capabilities  

NLE Websites -- All DOE Office Websites (Extended Search)

TMV Technology Capabilities TMV Technology Capabilities Brake Stroke Monitor Brake monitoring systems are proactive maintenance systems that provide instant identification of wheel specific, out-of-adjustment, non-functioning or dragging brake issues. AC Shore Power Since the TMV is equipped with DC power in-vehicle, shore power is needed to 1) charge the batteries that supply power to those outlets and 2) be used when running off battery power is not necessary FMCSA Laptop The laptop contains key software which helps enforcement officials perform inspections, look up information, etc. This computer also contains software for the USDOT # reader. Electronic On-Board Recorder EOBRs remove the need for paper logs by automatically recording duty status and location. EOBRs help

290

Rubber friction and tire dynamics  

E-Print Network (OSTI)

We propose a simple rubber friction law, which can be used, e.g., in models of tire (and vehicle) dynamics. The friction law is tested by comparing numerical results to the full rubber friction theory (B.N.J. Persson, J. Phys.: Condensed Matter 18, 7789 (2006)). Good agreement is found between the two theories. We describe a two-dimensional (2D) tire model which combines the rubber friction model with a simple mass-spring description of the tire body. The tire model is very flexible and can be used to calculate accurate mu-slip (and the self-aligning torque) curves for braking and cornering or combined motion (e.g., braking during cornering). We present numerical results which illustrate the theory. Simulations of Anti-Blocking System (ABS) braking are performed using two simple control algorithms.

B. N. J. Persson

2010-07-16T23:59:59.000Z

291

Prediction of torque and specific fuel consumption of a gasoline engine by using artificial neural networks  

Science Journals Connector (OSTI)

This study presents an artificial neural network (ANN) model to predict the torque and brake specific fuel consumption of a gasoline engine. An explicit ANN based formulation is developed to predict torque and brake specific fuel consumption of a gasoline engine in terms of spark advance, throttle position and engine speed. The proposed ANN model is based on experimental results. Experimental studies were completed to obtain training and testing data. Of all 81 data sets, the training and testing sets consisted of randomly selected 63 and 18 sets, respectively. An ANN model based on a back-propagation learning algorithm for the engine was developed. The performance and an accuracy of the proposed ANN model are found satisfactory. This study demonstrates that ANN is very efficient for predicting the engine torque and brake specific fuel consumption. Moreover, the proposed ANN model is presented in explicit form as a mathematical function.

Necla Kara Togun; Sedat Baysec

2010-01-01T23:59:59.000Z

292

Assessment of the fuel magnetisation capacity to improve fuel economy and enhance performance in a four-stroke SI engine  

Science Journals Connector (OSTI)

In this paper, we investigate the effect of fuel magnetisation on the overall performance of a four-stroke Spark Ignition (SI) engine. To achieve this objective, we have designed a set of experiments using the Mitsubishi 1.5 L (4G15) SI engine. Each experiment is performed in two phases: with and without the fuel magnetisation. The collected data was analysed to assess the overall performance of the engine at several operating conditions. Our study shows that fuel magnetiser can enhance the overall performance of a typical SI engine. However, the enhancement greatly depends on the operating condition of the engine. Specifically, the best-observed performance enhancement in the tested engine owing to the usage of the fuel magnetiser was to reduce the Brake Specific Fuel Consumption (BSFC) by 9% increase the Brake Power (BP) by 9% and boost the brake thermal efficiency (?b) from 29% to 31%.

Raed Kafafy; Wajdi Bin Ali; Waleed Faris

2012-01-01T23:59:59.000Z

293

Heel and toe driving on fuel cell vehicle  

DOE Patents (OSTI)

A system and method for providing nearly instantaneous power in a fuel cell vehicle. The method includes monitoring the brake pedal angle and the accelerator pedal angle of the vehicle, and if the vehicle driver is pressing both the brake pedal and the accelerator pedal at the same time and the vehicle is in a drive gear, activating a heel and toe mode. When the heel and toe mode is activated, the speed of a cathode compressor is increased to a predetermined speed set-point, which is higher than the normal compressor speed for the pedal position. Thus, when the vehicle brake is removed, the compressor speed is high enough to provide enough air to the cathode, so that the stack can generate nearly immediate power.

Choi, Tayoung; Chen, Dongmei

2012-12-11T23:59:59.000Z

294

MTDC Safety Sensor Technology  

NLE Websites -- All DOE Office Websites (Extended Search)

MTDC Safety Sensor Technology MTDC Safety Sensor Technology Background Beyond the standard duty cycle data collection system used in the Department of Energy's Medium Truck Duty Cycle program, additional sensors were installed on three test vehicles to collect several safety-related signals of interest to the Federal Motor Carrier Safety Administration. The real-time brake stroke, tire pressure, and weight information obtained from these sensors is expected to make possible a number of safety-related analyses such as determining the frequency and severity of braking events and tracking tire pressure changes over time. Because these signals are posted to the vehicle's databus, they also have the potential to be

295

Vendor / Technology A  

NLE Websites -- All DOE Office Websites (Extended Search)

Electronic Machines Corporation Electronic Machines Corporation Smart Infrared Inspection System Commercial Motor Vehicle Roadside Technology Corridor Safety Technology Showcase October 14, 2010 Commercial Motor Vehicle Roadside Technology Corridor Smart Infrared Inspection System (SIRIS) * Grant for a demonstration of thermal imaging technologies - Identify, in real time, faults and failures in tires, brakes and bearings mounted on commercial motor vehicles - Employ system along the interstate - Explore whether statistical tools can be developed that can predict impending tire, brake, or bearing failures SIRIS - Details * $1.4 M Research Grant * 3-year Project * Grant competitively awarded September 2006 to IEM, Inc. of Troy, NY * Supplemental $500K from NYSERDA for improved high

296

An evaluation of the mixing and oxygen transfer occurring in a deep aeration basin  

E-Print Network (OSTI)

, they often do not specify what type of power . Yunt defines four tvpes o f hor sepower for turbine aer ation systems. They are: (a) wire horsepower, (b) motor brake horsepower, (c) gearbox 'bnake horsepower, and ( d) delivered horsepower . Wir e ho..., they often do not specify what type of power . Yunt defines four tvpes o f hor sepower for turbine aer ation systems. They are: (a) wire horsepower, (b) motor brake horsepower, (c) gearbox 'bnake horsepower, and ( d) delivered horsepower . Wir e ho...

Andrews, Donald Craig

2012-06-07T23:59:59.000Z

297

Author's personal copy Research article  

E-Print Network (OSTI)

of heavy metals [23]. Glutathione reductase (GR) is the enzyme that, in conjunction with NADPH, catalyzes to heavy metal stresses have been the subject of several studies [9,21,31]. Srivas- tava et al. [27] found brake fern) accumulates large amounts of arsenic in its fronds without showing toxicity symptoms [19

Ma, Lena

298

JOURNAL DE PHYSIQUE IV Colloque C9, supplCment au Journal de Physique 111, Volume 3, dtcembre 1993  

E-Print Network (OSTI)

Corrosion during gasification of biomass and waste Rikard Kallstrom Studsvik Material AB, 61182 Nycoping oxychlorides, which easily brake the scale. During gasification of waste the situation is even worse, Sweden Abstract. - The gasificationof biomass and waste results in severe atmospheric corrosion con

Paris-Sud XI, Université de

299

ABIKE COMMUTER has a lot to consider before leaving for work. What route to take, considering hills and traffic?  

E-Print Network (OSTI)

, merely requiring the driver to shift his foot from gas pedal to brake, perhaps change gears, and more than 100 watts of propulsion power, or about what it takes to power a reading lamp. At 100 watts generate far more power than that (up to perhaps 500 watts for a racing cyclist, equivalent to the amount

Fajans, Joel

300

Ris6 Report No. 143 Danish Atomic Energy Commission  

E-Print Network (OSTI)

the reference (inching mode); in addition the motors brake rapidly because of the permanent magnetization-speed motion. #12;. 2 . Table of Contents Pftge Introduction 3 General Description 3 Shaft Digitiser 3 Decoder the reflected decimal code from the shaft digitizer either to decimal form or to binary-coded decimal

Note: This page contains sample records for the topic "brakes regenerative braking" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Yaw stability control design through a mixed sensitivity approach V. Cerone, M. Milanese, D. Regruto  

E-Print Network (OSTI)

which aims at enhancing the vehicle yaw stability is the Vehicle Dynamics Control system (VDC). Indeed systems is to compensate for the driver's inadequacy and generate a control yaw moment through either steering or braking control inputs or both. VDC system directly controls yaw moment by generating

Regruto, Diego

302

LATERAL VEHICLE STABILIZATION USING CONSTRAINED NONLINEAR CONTROL  

E-Print Network (OSTI)

problems of designing a controller for the yaw dynamics are the nonlinearities which appear in the system, nonlinear systems, constraints. Abstract A lateral stabilization system for automotive vehicles is de of the vehicle during braking maneuvers. These systems were followed by traction control systems, which im- prove

Johansen, Tor Arne

303

VEHICLE DYNAMICS CONTROL WITH ROLLOVER PREVENTION FOR ARTICULATED HEAVY TRUCKS  

E-Print Network (OSTI)

in controlling vehicle yaw response. In this paper, a VDC system that improves yaw, lateral, and roll stability. The Vehicle Dynamics Control system (VDC) actively brakes individual wheels to directly influence vehicle yaw to generate a stabilizing yaw moment. VDC systems are typically designed so that application of differential

Peng, Huei

304

The Centre for Power Transmission  

E-Print Network (OSTI)

the stability of the system. Stability investigations Investigations into the effect of yaw inertia have been the efficacy of the Al- Ko automatic braking system, designed to aid the driver during an emergency, when the principles of yaw inertia at public events. In addition to this, a computer training `game' has been

Burton, Geoffrey R.

305

Demonstration of a Large Dissipative Haptic Environment Mike Vande Weghe1  

E-Print Network (OSTI)

on a spherical coordinate system ( ,,r ), while three free DOF built into the handle assembly allow for roll, pitch, and yaw rotations of the user's hand with respect to the endpoint. The device is intended for the full torque load, the design uses smaller, lighter brakes in conjunction with low-mass cable reduction

Matsuoka, Yoky

306

Operating Systems Introduction  

E-Print Network (OSTI)

by the environment" 4 Introduction (2) ¿ Examples of real-time systems: ¿ plant control ¿ control of production systems ¿ space missions ¿ household appliances ¿ virtual / augmented reality #12;3 5 Introduction (3 of application: ¿ Automotive: · power-train control, air-bag control, steer by wire, brake by wire ¿ Aircraft

Bogliolo, Alessandro

307

Efficient high density train operations  

DOE Patents (OSTI)

The present invention provides methods for preventing low train voltages and managing interference, thereby improving the efficiency, reliability, and passenger comfort associated with commuter trains. An algorithm implementing neural network technology is used to predict low voltages before they occur. Once voltages are predicted, then multiple trains can be controlled to prevent low voltage events. Further, algorithms for managing inference are presented in the present invention. Different types of interference problems are addressed in the present invention such as "Interference. During Acceleration", "Interference Near Station Stops", and "Interference During Delay Recovery." Managing such interference avoids unnecessary brake/acceleration cycles during acceleration, immediately before station stops, and after substantial delays. Algorithms are demonstrated to avoid oscillatory brake/acceleration cycles due to interference and to smooth the trajectories of closely following trains. This is achieved by maintaining sufficient following distances to avoid unnecessary braking/accelerating. These methods generate smooth train trajectories, making for a more comfortable ride, and improve train motor reliability by avoiding unnecessary mode-changes between propulsion and braking. These algorithms can also have a favorable impact on traction power system requirements and energy consumption.

Gordon, Susanna P. (Oakland, CA); Evans, John A. (Hayward, CA)

2001-01-01T23:59:59.000Z

308

Associate Professor Visiting Scholar  

E-Print Network (OSTI)

efficient and environment friendly compared with conventional vehicles that are powered by internal optimization of the power sources and the recovery of vehicle kinetic energy during braking and coasting the algorithms for the operation control and optimization of a parallel hybrid electric vehicle 4 . Based

Mi, Chunting "Chris"

309

Proceedingsof the American Control Conference Chicago, Illinois June 2000  

E-Print Network (OSTI)

, engine clutch, CVT, electric motor, lead-acid battery, vehicle driveline, hydraulic brakes powertrain [3]. Parallel Hybrid Electric Vehicles (PHEV) are HEVs configured such that the electric motor of the vehicle's power ultimately comes from fuel. The battery is recharged by using the electric motor

Peng, Huei

310

ORIGINAL ARTICLE The Effect of Foot and Ankle Prosthetic Components on  

E-Print Network (OSTI)

ORIGINAL ARTICLE The Effect of Foot and Ankle Prosthetic Components on Braking and Propulsive, Neptune RR, Walden JG, Rogers WE, Bosker GW. The effect of foot and ankle pros- thetic components-9. Objective: To assess the influence of energy storage and return (ESAR) prosthetic feet and multi-axis ankles

311

SOONER MAGAZINE22 33 thousand  

E-Print Network (OSTI)

Traffic on Boyd Street, lead- ing straight to the University of Oklahoma's front door, was backed up for blocks. Such an impressive showing of brake lights and turn sig- nals usually was reserved for Satur a gridiron magnet. On this chilly No- vember evening, however, the spot- light was not on the exalted Owen

Oklahoma, University of

312

MTDC Safety Sensor Technology Beyond the standard duty cycle data  

E-Print Network (OSTI)

MTDC Safety Sensor Technology Background Beyond the standard duty cycle data collection system used in the Department of Energy's Medium Truck Duty Cycle program, additional sensors were installed on three test Administration. The real-time brake stroke, tire pressure, and weight information obtained from these sensors

313

National Aeronautics and Space Administration Entry, DEscEnt, anD LanDing  

E-Print Network (OSTI)

) TA09-6 1.1.1. Rigid Thermal Protection Systems (TPS) (cross cutting with TA05-Thermal Management) TA09-8 1.1.2. Flexible Thermal Protection Systems (cross cutting with TA05-Thermal Management) TA09-9 1 the atmosphere of a body for aerocapture or aero- braking (just "E"), landing on small or large bod- ies

Waliser, Duane E.

314

Manfred Huber 2011 1 Reasoning with Uncertainty  

E-Print Network (OSTI)

Logic - Applications Many everyday applications use Fuzzy Logic control Microwaves ABS brakes Camera Huber 2011 6 Fuzzy Inference (Control) Fuzzy Logic uses logic inference rules and defuzzification© Manfred Huber 2011 1 Reasoning with Uncertainty Fuzzy Logic #12;© Manfred Huber 2011 2 Fuzzy

Huber, Manfred

315

Urban Geochemistry:  

Science Journals Connector (OSTI)

...index.html With the rise in the use of diesel fuels, sulfate deposition was accompanied...in private gardens, and the mechanical wear of automobile parts (tires, brakes...polychlorinated biphenyls (PCBs) in the marine sediments of the Gulf of Naples estuary...

Stefano Albanese; Domenico Cicchella

316

Motor Pool Department The Motor Pool Department is responsible for the maintenance of over 550 Georgia Tech state  

E-Print Network (OSTI)

and equipment, including filter, oil change, antifreeze, brakes, etc. · Provide road call services to Georgia. · Provide fleet management to Georgia Tech's state owned vehicles, LSVs and equipment; including Inventory and maintaining an inventory. · Customers are required to complete a service request form when bringing

317

Combustion joining of refractory materials: Carboncarbon composites  

E-Print Network (OSTI)

Honeywell Aerospace, South Bend, Indiana 46628 Alexander S. Shteinberg ALOFT, Berkeley, California 94708 that manufacture C­C components, such as Honeywell Aerospace (South Bend, IN).3 For example, through C­C joining, Honeywell Aerospace could perform a refurbishment of the carbon brakes by bonding a new thin C­C element

Mukasyan, Alexander

318

Analysis and Design of a Novel Three-Level LLCC Inverter Supplying an Airborne Piezoelectric  

E-Print Network (OSTI)

Analysis and Design of a Novel Three-Level LLCC Inverter Supplying an Airborne Piezoelectric Brake on the investigation of a novel single-phase three-level PWM inverter in the kW power range, feeding a high power multi suit best to the needs of ultrasonic motors has been conducted. A resonant inverter with LLCC

Paderborn, Universität

319

An experimental investigation of high performance natural gas engine with direct injection  

Science Journals Connector (OSTI)

This paper presents experimental results of a new compressed natural gas direct injection (CNG-DI) engine that has been developed from modification of a multi cylinder gasoline port injection (PI) engine. The original gasoline-PI engine was also modified to a CNG bi-fuel system. The test results obtained from CNG fuel using two different systems (i.e. bi-fuel and DI) have been investigated and compared with the original gasoline engine. The objective of this investigation is to compare the test results between CNG-DI, with CNG-BI and gasoline-PI engines with the same displacement volume. It was found that the CNG-DI engine produces similar brake power at 6000rpm and wide open throttle (WOT) but produces higher brake power at part load condition as compared to the original gasoline. The CNG-BI engine produces 23% lower brake power than the CNG-DI engine. The average brake specific fuel consumption (BSFC) of the CNG-DI engine was 0.28% and 8% lower than gasoline-PI and CNG-BI engines respectively. The CNG-DI engine reduces 42% \\{NOx\\} emission as compared to the base engine. However, the CNG-DI engine produces higher HC and CO emissions as compared to the base engine. This paper discusses a review on the direct injection (DI) natural gas engine with new information along with other investigations.

M.A. Kalam; H.H. Masjuki

2011-01-01T23:59:59.000Z

320

SOME REFLECTIONS ON THE STATE OF SCIENCE IN AMERICA DURING THE NINETEENTH CENTURY  

Science Journals Connector (OSTI)

...part of the curriculum. The bills for purchase of scientific...essential. Both have as their materials the "thoughts of God," but...experiments such vessels, materials, and instruments as, if broken...a "center vent" hydraulic turbine, and also a railroad car brake...

I. Bernard Cohen

1959-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "brakes regenerative braking" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Princeton Plasma Physics Laboratory NSTX Experimental Proposal  

E-Print Network (OSTI)

Operations Chit Review Board (designated by Run Coordinator) MINOR MODIFICATIONS (Approved by Experimental and detailed nature of the inertial effects and dissipation mechanisms have yet to be determined. The strength, and neoclassical effects. Active braking of the plasma rotation by externally applied fields will be used to alter

Princeton Plasma Physics Laboratory

322

Princeton Plasma Physics Laboratory NSTX Experimental Proposal  

E-Print Network (OSTI)

Responsible Division: Experimental Research Operations Chit Review Board (designated by Run Coordinator) MINOR redistribution and loss of fast ions resulting from the bursts. In addition, eternal braking fields eigenfunctions. Comparison with calculated BAAE eigenfunctions will improve understanding of the exact nature

Princeton Plasma Physics Laboratory

323

ILLINOIS -RAILROAD ENGINEERING A Feasibility Study of MachineA Feasibility Study of Machine--Vision InspectionVision Inspection  

E-Print Network (OSTI)

documented making defect trending difficult · Inefficient use of skilled labor (carmen) 4 Carmen 25 Cars Yard Questions and Comments #12;Slide 3 ILLINOIS - RAILROAD ENGINEERING Car Inspection Background Why are railcars cars inspected? · Safety · Efficiency Inspections address: · Braking System · Safety Appliances

Barkan, Christopher P.L.

324

Robust efficiency and actuator saturation explain healthy heart rate control and variability  

Science Journals Connector (OSTI)

...treated as compliant vessels, modeled in the form...iv) the metabolic consumption M; (v...multitasking, alcohol consumption, fatigue, or poor...signals (e.g., fuel or air rates, braking...ventilation V ? E , oxygen consumption V ? O 2 and carbon...

Na Li; Jerry Cruz; Chenghao Simon Chien; Somayeh Sojoudi; Benjamin Recht; David Stone; Marie Csete; Daniel Bahmiller; John C. Doyle

2014-01-01T23:59:59.000Z

325

PM PEMs On-Road Investigation With and Without DPF Equipped Engines  

E-Print Network (OSTI)

correlation between engine fuel consumption and emissionsengine for both the PPMD derived work and the PEMS derived work 86 Figure 5-3 Fuel consumptionFuel Consumption Results .. 86 Brake Specific Emissions 88 Lessons Learned and Operational Issues . 93 PEMS1 Caterpillar 2000 Engine

Durbin, T; Jung, H; Cocker III, D R; Johnson, K

2009-01-01T23:59:59.000Z

326

Evaluating the environmental quality impact of the 2008 Beijing Olympic Games: magnetic monitoring of street dust in Beijing Olympic Park  

Science Journals Connector (OSTI)

......angular particles to engine and brake abrasion...released from fossil fuel combustion in domestic...November to March when coal consumption in Beijing is ~30 million...spherules from fossil-fuel combustion. This effect...corrosion of the vehicle engine and body work (Fig......

Qingqing Qiao; Chunxia Zhang; Baochun Huang; John D. A. Piper

2011-12-01T23:59:59.000Z

327

Urban Geochemistry:  

Science Journals Connector (OSTI)

...per capita lead consumption in the United...coal-fired steam engine. The steam engine...burning of fossil fuels and the local...use of diesel fuels, sulfate deposition...tires, brakes, engine belts, mufflers...and fossil-fuel combustion...and material consumption, utilizing sensible...

Stefano Albanese; Domenico Cicchella

328

Sample RoutesData Acquisition System Setup Medium Truck Duty Cycle (MTDC)  

E-Print Network (OSTI)

medium-duty vehicle energy efficiency research Collected Data Speed & Acceleration Fuel Consumption GPS real-world operations. Analysis of this data will provide information pertaining to the fuel Location Road Grade Engine Parameters Weight Brake and Tire Information Satellite Receiver eDAQ Data

329

A Monthly Safety Bulletin The Office of the NASA  

E-Print Network (OSTI)

was suspicious. I departed...and noticed the fuel consumption was more than normal. The right tank ran dry soon by a burned brake coil Refueling Retrospectives Fuel exhaustion and fuel mismanagement are common causes of engine failures and forced landings. A General Aviation (GA) pilot describes how he and his instructor

330

An Assessment of the Performance and Requirements for "Adiabatic" Engines  

Science Journals Connector (OSTI)

...brake fuel consumption) of heat-insulated...turbo-charged engines show-ing...Additional fuel economy because...conventional diesel for lower...are total fuel consumption. For most...conventional engines. nate the...45% ofthe fuel energy compared...conventional diesel engine...

JAMES ZUCCHETTO; PHILLIP MYERS; JOHN JOHNSON; DENNIS MILLER

1988-05-27T23:59:59.000Z

331

Low Temperature Pyrocarbon : a review Xavier Bourrat1,2  

E-Print Network (OSTI)

missiles, etc... Basically the process involves a carbon fiber preform which is infiltrated by CVI as shown on Figure 2. #12;Figure 1 Aircraft brake disks (rotor and stator) made of carbon fiber-reinforced pyrocarbon. Figure 2 Carbon/carbon composite : carbon fiber-reinforced pyrocarbon (SEM picture of a failure surface

Paris-Sud XI, Université de

332

Introduction to special section on the Phoenix Mission: Landing Site Characterization Experiments, Mission Overviews, and  

E-Print Network (OSTI)

braking strategy. After a safe landing, twin fan-like solar panels are unfurled and provide the energy lander with a science payload inherited from MPL and 2001 instruments gives significant advantages, University of Ottawa, Ottawa, Ontario, Canada. 10 Max Planck Institute for Solar System Research, Katlenburg

Duck, Thomas J.

333

Maria Druzhinina Anna Stefanopoulou  

E-Print Network (OSTI)

of the vehicle's turbocharged diesel engine using a variable valve timing actuator. A model reference adaptive with backstepping procedure to account for com- pression braking actuator dynamics, with observers for various unmeasured quantities and with compensation schemes for actuator saturation. In addition to speed tracking

Stefanopoulou, Anna

334

Work Request Form -Georgia Tech Motor Pool Vehicle Number ___________________ Date: _____________________ Department: ________________________  

E-Print Network (OSTI)

are experiencing) ____ Not Heating ____ Not Cooling Electrical and Electronics Systems (Please mark what best fits Signal Out Brake System/ Suspension and Steering (Please mark what best fits the description of the issue/ hard pedal Heating and A/C (Please mark what best fits the description of the issue you

335

138 Arvid Kappas Richards, J. M., & Gross, J. J. (2000). Emotion regulation and memory: The cog  

E-Print Network (OSTI)

.), The nature of emotion: Fundamental ques tions (pp. 127-130). New York: Oxford University Press. Scherer, K of emotions. In M. Lewis &J. M. Haviland Jones (Eds.), Handbook ofemotions (2nd ed., pp. 3-15). New York, forcing her to slam on her brakes. You might expect Margot to have become enraged. But she remained quite

Gross, James J.

336

Holistic Data-Driven Diagnosis for Dependable Automotive Systems  

E-Print Network (OSTI)

the recall of 680,000 Mercedes-Benz E-Class vehicles due to issues with the electronic brake-by-wire system systems has focused on online detection followed by offline di- agnosis. For example, diagnostic trou- ble codes (DTCs) are set based on errors that are detected during vehicle opera- tion. Such errors

Rajkumar, Ragunathan "Raj"

337

Role of Friction in Materials Selection for Automotive Applications  

SciTech Connect

This is an invited article for a special issue of the ASM International monthly magazine that concerns "Automotive Materials and Applications." The article itself overviews frictional considerations in material selection for automobiles. It discusses implications for energy efficiency (engine friction) and safety (brakes) among other topics.

Blau, Peter Julian [ORNL

2013-01-01T23:59:59.000Z

338

What is about future high speed power line communication systems for in-vehicles networks ?  

E-Print Network (OSTI)

by car manufacturers to fulfil the different communications between electronic control units (ECU related to the steering, traction, braking system (ABS), Electronic Stability Program (ESP), Electric of splicing that is necessary, as well as simplify and lighten the cable bundles The HomePlug Powerline

Paris-Sud XI, Université de

339

Alternative Fuel Implementation Tool Kit Case Study on Electric Vehicles  

E-Print Network (OSTI)

in vehicle price. However, Durham's vendor did not agree to such a transfer. Durham used several specific The existing duty cycle/application was feasible for the 70-mile typical driving range of the LEAF The vehicle, brake and fluid checks as well as preventive diagnostics, with no need for oil changes. The LEAF's high

340

ccsd-00085161,version1-4Oct2006 Norm Based Causal Reasoning in  

E-Print Network (OSTI)

vehicle in front of me braked". Using a truth based approach; we can obtain all the logical consequences-mail : nouiouaf@lipn.univ-paris13.fr 1 Motivation Truth based entailments are not sufficient for a good a stable truth value. Thus, what we represent explicitly is the linear time of the events, as they really

Paris-Sud XI, Université de

Note: This page contains sample records for the topic "brakes regenerative braking" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

Urban Geochemistry:  

Science Journals Connector (OSTI)

...coal-fired steam engine. The steam engine, together with other advances...With the rise in the use of diesel fuels, sulfate deposition...automobile parts (tires, brakes, engine belts, mufflers, etc...2013-010998 Environmental geology General geochemistry Mineralogical...

Stefano Albanese; Domenico Cicchella

342

This document contains the draft version of the following paper: W. Bejgerowski, J.W. Gerdes, S.K. Gupta, and H.A. Bruck. Design and fabrication of miniature  

E-Print Network (OSTI)

members, (b) the reduction in backlash, and (c) potential energy storage in deflected members [2]. Using for a flapping wing micro air vehicle. Methods described in this paper are applicable to any lightweight, load-constant-force compression mechanisms, near-constant-force electrical connectors, bicycle brakes, bicycle derailleur

Gupta, Satyandra K.

343

Role of Hydrogen Peroxide in a Selected Emulsified Fuel Ratio and Comparing It to Diesel Fuel  

Science Journals Connector (OSTI)

(9) At higher load conditions, the brake thermal efficiency slightly increases for the hydrogen-peroxide-added emulsified fuel than for the remaining two fuels. ... Reduction of NOx, smoke, BSFC, and maximum combustion pressure by low compression ratios in a diesel engine fueled by emulsified fuel. ...

M. P. Ashok; C. G. Saravanan

2008-05-03T23:59:59.000Z

344

Dynamics of Tearing Modes during Strong Electron Cyclotron Heating on the FTU Tokamak  

Science Journals Connector (OSTI)

The localized electron cyclotron resonance heating power that can suppress sawteeth reconnection often drives m=2 tearing modes in a tokamak operating at constant current. The dynamics of mode onset and coupled mode evolution is described in detail and compared with a nonlinear theoretical model that identifies the effects of mode coupling, finite inertia of the rotating islands, and wall braking.

E. Lazzaro et al.

2000-06-26T23:59:59.000Z

345

VOLUME 84, NUMBER 26 P H Y S I C A L R E V I E W L E T T E R S 26 JUNE 2000 Dynamics of Tearing Modes during Strong Electron Cyclotron Heating on the FTU Tokamak  

E-Print Network (OSTI)

Modes during Strong Electron Cyclotron Heating on the FTU Tokamak E. Lazzaro,1 A. Airoldi,1 A. Bruschi,1) The localized electron cyclotron resonance heating power that can suppress sawteeth reconnection often drives m braking. High power electron cyclotron resonance heating (ECRH) is used for controlling the MHD activity

Vlad, Gregorio

346

PS3060: Perception and Action (L.3) Driving a vehicle: control of heading,  

E-Print Network (OSTI)

1 PS3060: Perception and Action (L.3) Driving a vehicle: control of heading, collision avoidance 11, 12 of Bruce, Green & Georgeson 2003) · the ecological approach to vision: from insects to humans · collision: judging time to impact, braking a vehicle · heading: how you know in which direction you

Zanker, Johannes M.

347

Time-Based Intrusion Detection in Cyber-Physical Systems Christopher Zimmer, Balasubramany Bhat, Frank Mueller  

E-Print Network (OSTI)

determined prior to the schedulability analysis. We demonstrate how to provide micro-timings for multiple granularity levels of application code. Through bounds checking of these micro-timings, we develop techniques) to highly critical ones (anti-lock brakes, hydro-electric dam controls and flight control systems

Mueller, Frank

348

Statistics of Entropy Production in Linearized Stochastic System  

E-Print Network (OSTI)

We consider a wide class of linear stochastic problems driven off the equilibrium by a multiplicative asymmetric force. The force brakes detailed balance, maintained otherwise, thus producing entropy. The large deviation function of the entropy production in the system is calculated explicitly. The general result is illustrated using an example of a polymer immersed in a gradient flow and subject to thermal fluctuations.

K. Turitsyn; M. Chertkov; V. Y. Chernyak; A. Puliafito

2007-02-20T23:59:59.000Z

349

Symmetric Periodic Orbits in Three Sub-Problems of the N-body Problem  

E-Print Network (OSTI)

We study three sub-problems of the N-body problem that have two degrees of freedom, namely the n-pyramidal problem, the planar double-polygon problem, and the spatial double-polygon problem. We prove the existence of several families of symmetric periodic orbits, including ``Schubart-like" orbits and brake orbits, by using topological shooting arguments.

Nai-Chia Chen

2013-11-17T23:59:59.000Z

350

Mono inverter Multi parallel PMSM -Structure and Control strategy  

E-Print Network (OSTI)

a new and original Mono inverter Multi parallel Permanent Magnet Synchronous Motor (PMSM) systemMono inverter Multi parallel PMSM - Structure and Control strategy Damien Bidarta , Maria Pietrzak, braking system...). However, a MMS with machines operating independently needs a high number of power

Boyer, Edmond

351

Department of Mechanical Engineering Spring 2012 Motorized Rolling Walker  

E-Print Network (OSTI)

.16 ft.-lb. of torque Added a light-weight Li-Ion battery and a pulse-width-modulator controller battery capacity Tested the combined braking system to ensure they would stop the walker from moving with and without power Battery performed as desired, providing approximately 4 hours of use No yielding

Demirel, Melik C.

352

SOME REFLECTIONS ON THE STATE OF SCIENCE IN AMERICA DURING THE NINETEENTH CENTURY  

Science Journals Connector (OSTI)

...and the front, photography, gas warfare, machine guns, and...of the nineteenth century, technology and engineering did not in...and science "in their developments." "Brethren scholars, men...a "center vent" hydraulic turbine, and also a railroad car brake...

I. Bernard Cohen

1959-01-01T23:59:59.000Z

353

Liposomes in tissue engineering and regenerative medicine  

Science Journals Connector (OSTI)

...2012 From nano- to macro-scale: nanotechnology approaches for spatially controlled...2010 Emerging links between surface nanotechnology and endocytosis: impact on nonviral...Engineering extracellular matrix through nanotechnology. J. R. Soc. Interface 7, S717-S729...

2014-01-01T23:59:59.000Z

354

New Regenerative Cycle for Vapor Compression Refrigeration  

Office of Scientific and Technical Information (OSTI)

Flashing Liquid Flow, Int. J. Multiphase Flow, Vol. 22, No.3, 1996, pp.473-483 7. Smith I.K., Stosic, N.R., The Expressor: An Efficiency Boost to Vapour Compression Systems...

355

Regenerative medicine: the emergence of an industry  

Science Journals Connector (OSTI)

...it is only through the commercialization of the technology needed...the world. Successful commercialization ultimately requires regulatory...necessary and appropriate processes for regulating the delivery...be remembered that the commercialization of biotech historically...

2010-01-01T23:59:59.000Z

356

Liposomes in tissue engineering and regenerative medicine  

Science Journals Connector (OSTI)

...signalling pathway by the inhibitors, STAT3 siRNA, resulted in...osteogenic lineage 2012 [55] chitosan-fibrin matrix quinacrine...liposome immobilized in fibrin chitosan matrix released quinacrine...of the matrix 2006 [136] chitosan scaffolds pDNA-TGF-beta1...

2014-01-01T23:59:59.000Z

357

European Doctoral Academy in Regenerative Engineering  

E-Print Network (OSTI)

project that is placed along the inter- sectorial innovation pipeline of a number of tissue engineering products and technologies, addressing the clinical needs of cardiac valve repair and replacement

Cesare, Bernardo

358

Regen Powertech Pvt Ltd | Open Energy Information  

Open Energy Info (EERE)

Chennai, Tamil Nadu, India Zip: 600 006 Sector: Wind energy Product: Chennai-based wind turbine manufacturer that holds technology licence from Germany(tm)s Vensys....

359

Operation of a third generation wind turbine  

SciTech Connect

A modern wind turbine was installed on May 26, 1982, at the USDA Conservation and Production Research Laboratory, Bushland, Texas. This wind machine was used to provide electrical energy for irrigation pumping and other agricultural loads. The wind turbine purchased for this research is an Enertech Model 44, manufactured by Enertech Corporation, Norwich, Vermont. The horizontal-axis wind turbine has a 13.4 m diameter, three-bladed, fixed-pitch rotor on a 24.4-m tower. The blades are laminated epoxy-wood, and are attached to a steel hub. A 25-kW induction generator provides 240 V, 60 Hz, single-phase electrical power. The wind turbine operated 64 percent of the time, while being available to operate over 94 percent of the time. The unit had a net energy production of over 80,000 kWh in an average windspeed of 5.9 m/s at a height of 10 m in a 16-month period. The blade pitch was originally offset two degrees from design to maintain power production within the limitations of the gearbox, generator, and brakes. A maximum output of 23.2 kW averaged over a 15-second period indicated that with a new brake, the system was capable of handling more power. After a new brake was installed, the blade pitch was changed to one degree from design. The maximum power output measured after the pitch change was 29.3 kW. Modified blade tip brakes were installed on the wind turbine on July 7, 1983. These tip brakes increased power production at lower windspeeds while reducing power at higher windspeeds.

Vosper, F.C.; Clark, R.N.

1983-12-01T23:59:59.000Z

360

Effects of altitude and fuel oxygen content on the performance of a high pressure common rail diesel engine  

Science Journals Connector (OSTI)

Abstract The change of intake oxygen content caused by altitude variation and the change of fuel oxygen content both affect the performance of diesel engines. In this paper, comparative experiments were performed on a high pressure common rail diesel engine fueled with pure diesel and biodieselethanoldiesel (abbreviated as BED) blends with oxygen content of 2%, 2.5%, and 3.2% in mass percentage at different atmospheric pressures of 81kPa, 90kPa, and 100kPa. Moreover, in order to study the effect of different fuel blends with the same oxygen content on the performance of the diesel engine, tests were conducted on the diesel engine fueled with the BED blend and a biodieseldiesel (abbreviated as BD) blend at 81kPa ambient pressure. The experimental results indicate that the influence of altitude variation on the full-load engine brake torque is not significant when the pure diesel fuel is used. With the increase of BED fuel oxygen content, the engine brake torque reduces. When the pure diesel fuel is used, with the increase of atmospheric pressure, the brake specific fuel consumption (BSFC) decreases. As the fuel oxygen content increases, there is no significant difference in brake specific fuel consumption of the BED blends. And the values of brake specific energy consumption (BSEC) gradually decrease. Soot emissions of the diesel engine decrease with the increase of atmospheric pressure and fuel oxygen content. The effect of soot emission reduction by increasing the oxygen content of the fuel is more significant than the effect of increasing atmospheric pressure. The effects of BD and BED fuels with basically the same oxygen content on the full-load performance, fuel economy, and soot emissions of the diesel engine are different. The BSFC and soot emissions of the BED fuel are lower than those of the BD fuel.

Shaohua Liu; Lizhong Shen; Yuhua Bi; Jilin Lei

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "brakes regenerative braking" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Microsoft PowerPoint - Denison Status.ppt [Compatibility Mode]  

NLE Websites -- All DOE Office Websites (Extended Search)

DENISON TURBINE DENISON TURBINE REHABILITATION PLANNING REHABILITATION PLANNING Status Report Southwestern Federal Hydropower Conference 10 June 2010 By: Charlie Allen Chief, Turbomachinery Section y Hydroelectric Design Center US Army Corps of Engineers BUILDING STRONG ® Historic Context Historic Context Late 1990's: Index Testing, 4% Efficiency Decrease g y Early 2000's: Generator Uprate Study Mid 2000's: Generator Rewinds Completed Capacity increase from 42.3 KVA to 53.5 KVA Capacity increase from 42.3 KVA to 53.5 KVA BUILDING STRONG ® PORTLAND DISTRICT 2 Unit Condition Unit Condition Units installed in late 1940's Badly Corroded Wicket Gates, Facing Plates, Stay Vanes Excessive Wicket Gate Leakage Brake Speed Switches reset to compensate Brake Speed Switches reset to compensate Runner Blade Entrance Edge Cavitation

362

Hybrid: Cruising  

NLE Websites -- All DOE Office Websites (Extended Search)

Button Cruising button highlighted Passing Button Braking Button Stopped Button subbanner graphic: gray bar Button Cruising button highlighted Passing Button Braking Button Stopped Button subbanner graphic: gray bar CRUISING The gasoline engine powers the vehicle at cruising speeds and, if needed, provides power to the battery for later use. stage graphic: vertical blue rule Main stage: See through car with battery, engine, and electric motor visible. The car is moving. There are red arrows flowing from the gasoline engine to the front wheels. There are blue arrows flowing from the gasoline engine to the electric motor to the battery. Main stage: See through car with battery, engine, and electric motor visible. The car is moving. There are red arrows flowing from the gasoline engine to the front wheels. There are blue arrows flowing from the gasoline engine to the electric motor to the battery.

363

DEPARTMENT OF ENERGY EERE PROJECT MANAGEMENT CENTER NEPA DETERMINATION  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

.eU) , .eU) , u.s. DEPARTMENT OF ENERGY EERE PROJECT MANAGEMENT CENTER NEPA DETERMINATION RECIPIENT: Parker Hannifin, Aircraft Wheel and Brake Diy PROJECT TITl.E: Wind Turbine Electric Brake project Page 1 of2 STATE: OH Funding Opportunity Announcement Number Pro<:urement Instrument Number NEPA Control Number CID Number COP DE-EEOOOO296 GF0-10-053 0 Based on my review orthe information concerning tbe proposed action, as NEPA Compliance Officer- (autboriztd under DOE Order 4SI.1A), I have made the following determination: ex, EA, [IS APPENDIX AND NUMBER: Description: B3.6 Siting. construction (or modification). operation . and decommissioning of facilities for indoor bench-scale research projects and conventional laboratory operations (for example. preparation of chemical standards and sample analysis):

364

DOE Commercial Reference Buildings Summary of Changes Between Versions  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Buildings Buildings Summary of Changes between Versions November 2012 1 Applicable Model(s) Change Changes from version 1.2_4.0 to 1.3_5.0 All Transitioned from EnergyPlus 4.0 to EnergyPlus 5.0 All For fan power calculations, fan nameplate horsepower corrected from 90% brake horsepower to 110% brake horsepower All Removed multipliers on roof surface infiltration because EnergyPlus now counts the roof surface in infiltration per exterior surface area calculations All Added parking lot exterior lighting All Updated headers to reflect new name for technical report reference All models with DX cooling Changed COP calculation to remove fan power at ARI conditions, not max. allowable fan power (see Ref. Bldgs. Technical Report for more info.) All models with DX cooling Changed cooling performance curves to reflect

365

Microsoft Word - solcar95.html  

NLE Websites -- All DOE Office Websites (Extended Search)

FORCE FORCE VEHICLE SPECIFICATIONS CONVERTED VEHICLE Base Vehicle: 1995 Geo Metro VIN:2C1MR529XS6783464 Seatbelt Positions: Three Standard Features: Power Brakes Front Disk Brakes Front Wheel Drive Dual Air Bags AM/FM Stereo Radio w/Cassette Electric Heater Options as Tested: None BATTERY Manufacturer: GM Ovonic Type: 13.2EV85 Nickel Metal Hydride Number of Modules: 14 Weight of Module: 18 kg Weight of Pack(s): 254 kg Pack Locations: Undertrunk/Underhood Nominal Module Voltage: 13.2 V Nominal System Voltage: 185 V Nominal Capacity (1C): 85 Ah WEIGHTS Design Curb Weight: 2246 lbs Delivered Curb Weight: 2304 lbs Distribution F/R: 50/50 % GVWR: 2755 lbs GAWR F/R: 1432/1366 lbs Payload: 451 lbs Performance Goal: 664 lbs DIMENSIONS Wheelbase: 93.5 inches

366

Hybrid: Cruising  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Button Cruising button highlighted Passing Button Braking Button Stopped Button subbanner graphic: gray bar Button Cruising button highlighted Passing Button Braking Button Stopped Button subbanner graphic: gray bar CRUISING The gasoline engine powers the vehicle at cruising speeds and, if needed, provides power to the battery for later use. stage graphic: vertical blue rule Main stage: See through car with battery, engine, and electric motor visible. The car is moving. There are red arrows flowing from the gasoline engine to the front wheels. There are blue arrows flowing from the gasoline engine to the electric motor to the battery. Main stage: See through car with battery, engine, and electric motor visible. The car is moving. There are red arrows flowing from the gasoline engine to the front wheels. There are blue arrows flowing from the gasoline engine to the electric motor to the battery.

367

Enertech 15-kW wind-system development: Phase I. Design and analysis. Volume I. Executive summary  

SciTech Connect

A utility interfaced wind machine rated for 15 kW at 9 m/s (20.1 mph) has been designed to be cost effective in 5.4 m/s (12 mph) average wind sites. Approximately 18 months into the research and development program a completed design meeting contract specifications was submitted to the buyer. The design is for a horizontal axis, down wind machine which features three fixed pitch wood-epoxy blades and free yaw. Rotor diameter is 44 feet (13.4 meters). Unit shutdown is provided by an electrohydraulic brake. Blade tip brakes provide back-up rotor overspeed protection. Design merits have been verified through dynamic truck testing of a prototype unit.

Not Available

1981-09-01T23:59:59.000Z

368

Enertech 15-kW wind-system development. Phase I. Design and Analysis. Volume II. Technical report  

SciTech Connect

A utility interfaced wind machine rated for 15 kW at 9 m/s (20.1 mph) has been designed to be cost effective in 5.4 m/s (12 mph) average wind sites. Approximately 18 months into the research and development program a completed design meeting contract specifications was submitted to the buyer. The design is for a horizontal axis, down wind machine which features three fixed pitch wood-epoxy blades and free yaw. Rotor diameter is 44 feet (13.4 meters). Unit shutdown is provided by an electrohydraulic brake. Blade tip brakes provide back-up rotor overspeed protection. Design merits have been verified through dynamic truck testing of a prototype unit.

Dodge, D.M. (ed.)

1981-09-01T23:59:59.000Z

369

Combustion and performance of a diesel engine with preheated Jatropha curcas oil using waste heat from exhaust gas  

Science Journals Connector (OSTI)

Abstract The viscosity and density of CJO (crude Jatropha oil) were reduced by heating it using the heat from exhaust gas of a diesel engine with an appropriately designed helical coil heat exchanger. Experiments were conducted to evaluate the combustion characteristics of a DI (direct injection) diesel engine using PJO (preheated Jatropha oil). It exhibited a marginally higher cylinder gas pressure, rate of pressure rise and heat release rate as compared to HSD (high speed diesel) during the initial stages of combustion for all engine loadings. Ignition delay was shorter for PJO as compared to HSD. The results also indicated that BSFC (brake specific fuel consumption) and EGT (exhaust gas temperature) increased while BTE (brake thermal efficiency) decreased with PJO as compared to HSD for all engine loadings. The reductions in CO2 (carbon dioxide), HC (hydrocarbon) and \\{NOx\\} (nitrous oxide) emissions were observed for PJO along with increased CO (carbon monoxide) emission as compared to those of HSD.

Priyabrata Pradhan; Hifjur Raheman; Debasish Padhee

2014-01-01T23:59:59.000Z

370

An experimental study of the effect of a homogeneous combustion catalyst on fuel consumption and smoke emission in a diesel engine  

Science Journals Connector (OSTI)

This paper presents the results of an experimental investigation into the influence of a ferrous picrate based homogeneous combustion catalyst on fuel consumption and smoke emission of a laboratory diesel engine. The catalyst used in this study was supplied by Fuel Technology Pty. Ltd. The fuel consumption and smoke emission were measured as a function of engine load, speed and catalyst dosing ratio. The brake specific fuel consumption and smoke emission decreased as the dosing ratio of the catalyst doped in the diesel fuel increased. At the catalyst dosing ratio of 1:3200, the brake specific fuel consumption was reduced by from 2.1% to 2.7% and the smoke emission was reduced by from 6.7% to 26.2% at the full engine load at speeds from 2600rpm to 3400rpm. The results also indicated that the potential of the fuel saving seems to be greater when the engine was run under light load.

Mingming Zhu; Yu Ma; Dongke Zhang

2011-01-01T23:59:59.000Z

371

Performance analysis and exhaust emissions of neem methyl ester operated compression ignition engine  

Science Journals Connector (OSTI)

Neem oil methyl ester (NOME) was prepared from neem oil using alkaline catalyzed transesterification. The important fuel properties of NOME 20% blend of NOME with diesel were compared with those of diesel. Optimum injection pressures were determined for neat diesel and NOME-20 blend. Comparison of brake specific fuel consumption (BSFC) brake thermal efficiency (BTE) exhaust gas temperature (EGT) and smoke density was done for diesel and NOME-20 blend at their respective optimum injection pressure. Higher BSFC a slight decrease in BTE and a sharp decrease in EGT and smoke density were recorded with NOME-20 blend. Emissions with NOME-20 blend were also compared with diesel emissions at their respective optimum injection pressures. Significant reductions in carbon monoxide hydrocarbon and oxides of nitrogen and increase in carbon-di-oxide were observed with NOME-20 blend. Hence neem biodiesel has an environmental importance over diesel and shows a promising future.

Vinod Singh Yadav; Kamal Kishore Khatri; Deepak Tanwar; Ajayta; Dilip Sharma; S. L. Soni

2013-01-01T23:59:59.000Z

372

Anti-slip regulator system (ASR)  

Science Journals Connector (OSTI)

When wheelspin occurs the anti-slip regulator system (ASR) regulates the drive torque in such a way that steerability is always retained, together with good forward traction. The microprocessor which performs the regulating function compares the wheel speed increase at each driven wheel with the vehicle acceleration, and calculates the 'excess torque' which is causing wheelspin, and eliminates it automatically by briefly actuating the wheel brake and/or by backing off the throttle. At low speeds the wheel with the greatest amount of wheelspin is slowed by an exactly calculated brake application with a simultaneous reduction of engine power, so that the amount of forward traction is determined by the greatest available surface adhesion. At higher speeds, however, in order to avoid undesired yaw reactions, the system operates only by reducing engine power delivery by the necessary amount, which means that the amount of tractive force is determined by the lower surface adhesion value in each case.

B.-G. Schulze; E. Lissel

1987-01-01T23:59:59.000Z

373

Performance and emission parameters optimization of mahua (Madhuca indica) based biodiesel in direct injection diesel engine using response surface methodology  

Science Journals Connector (OSTI)

Mahua oil ethyl ester was prepared from mahua oil using potassium hydroxide as catalyst by trans-esterification. The important fuel properties of mahua biodiesel blends were compared with those of high speed diesel and biodiesel standards. Variation of brake specific fuel consumption (BSFC) brake thermal efficiency (BTE) Pmax CO NOx hydrocarbons and smoke opacity across compression ratio blending ratio and load were studied successfully using response surface methodology based on Central composite rotatable design. The trends similar to general theory of compression ignition engines (CI) were obtained. Optimum performance and emission parameters were determined by considering the significant variables affecting the diesel engine. Significant reduction in emissions at 23% blending ratio were observed as compared to neat diesel at optimum input variables. Hence mahua biodiesel is an environment friendly alternate fuel over diesel and has good scope to run the compression ignition engines.

Sunil Dhingra; Gian Bhushan; Kashyap Kumar Dubey

2013-01-01T23:59:59.000Z

374

Full Hybrid: Overview  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

highlighted Starting button Low Speed button Cruising button Passing button Braking button Stopped button highlighted Starting button Low Speed button Cruising button Passing button Braking button Stopped button OVERVIEW Full hybrids use a gasoline engine as the primary source of power, and an electric motor provides additional power when needed. In addition, full hybrids can use the electric motor as the sole source of propulsion for low-speed, low-acceleration driving, such as in stop-and-go traffic or for backing up. This electric-only driving mode can further increase fuel efficiency under some driving conditions. stage graphic: vertical blue rule Main stage: See through car with battery, engine, generator, power split device, and electric motor visible. The car is stopped at an intersection. Main stage: See through car with battery, engine, generator, power split device, and electric motor visible. The car is stopped at an intersection.

375

Hybrid: Passing  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Button Passing button highlighted Braking Button Stopped Button subbanner graphic: gray bar Button Passing button highlighted Braking Button Stopped Button subbanner graphic: gray bar PASSING During heavy accelerating or when additional power is needed, the gasoline engine and electric motor are both used to propel the vehicle. Additional power from the battery is used to power the electric motor as needed. stage graphic: vertical blue rule Main stage: See through car with battery, engine, and electric motor visible. The car is passing another vehicle. There are red arrows flowing from the gasoline engine to the front wheels. There are blue arrows flowing from the battery to the electric engine to the front wheels. Main stage: See through car with battery, engine, and electric motor visible. The car is passing another vehicle. There are red arrows flowing from the gasoline engine to the front wheels. There are blue arrows flowing from the battery to the electric engine to the front wheels.

376

Full Hybrid: Low Speed  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

highlighted Cruising button Passing button Braking button Stopped button highlighted Cruising button Passing button Braking button Stopped button LOW SPEED For initial acceleration and slow-speed driving, as well as reverse, the electric motor uses electricity from the battery to power the vehicle. If the battery needs to be recharged, the generator starts the engine and converts energy from the engine into electricity, which is stored in the battery. stage graphic: vertical blue rule Main stage: See through car with battery, engine, generator, power split device, and electric motor visible. The car is moving at a low speed. There are arrows flowing from the battery to the electric motor to the power split device to the front wheels. Main stage: See through car with battery, engine, generator, power split device, and electric motor visible. The car is moving at a low speed. There are arrows flowing from the battery to the electric motor to the power split device to the front wheels.

377

High reduction transaxle for electric vehicle  

DOE Patents (OSTI)

A drivetrain (12) includes a transaxle assembly (16) for driving ground engaging wheels of a land vehicle powered by an AC motor. The transaxle includes a ratio change section having planetary gear sets (24, 26) and brake assemblies (28, 30). Sun gears (60, 62) of the gear sets are directly and continuously connected to an input drive shaft (38) driven by the motor. A first drive (78a) directly and continuously connects a planetary gear carrier (78) of gear sets (24) with a ring gear (68) of gear set (26). A second drive (80a) directly and continuously connects a planetary gear carrier (80) of gear set (26) with a sun gear (64) of a final speed reduction gear set (34) having a planetary gear carrier directly and continuously connected to a differential (22). Brakes (28, 30) are selectively engageable to respectively ground a ring gear 66 of gear set 24 and ring gear 68 of gear set 26.

Kalns, Ilmars (Plymouth, MI)

1987-01-01T23:59:59.000Z

378

Production of extended plasma channels in atmospheric air by amplitude-modulated UV radiation of GARPUN-MTW Ti : sapphire-KrF laser. Part 1. Regenerative amplification of subpicosecond pulses in a wide-aperture electron beam pumped KrF amplifier  

SciTech Connect

Regenerative amplification of single and multiple ultrashort subpicosecond UV pulses in a wide-aperture KrF amplifier with an unstable confocal resonator was investigated on the GARPUN-MTW hybrid laser system. Amplitude-modulated 100-ns long UV radiation pulses with an energy of several tens of joules were obtained at the output of the system. The pulses were a combination of a quasi-stationary oscillation pulse and a train of amplified ultrashort pulses (USPs) with a peak power of 0.2-0.3 TW, which exceeded the power of free-running lasing pulse by three orders of magnitude. The population inversion recovery time in the active KrF laser medium was estimated: {tau}{sub c} {<=} 2.0 ns. Trains of USPs spaced at an interval {Delta}t Almost-Equal-To {tau}{sub c} were shown to exhibit the highest amplification efficiency. The production of amplitude-modulated UV pulses opens up the way to the production and maintenance of extended plasma channels in atmospheric air. (extreme light fields and their applications)

Zvorykin, V D; Ionin, Andrei A; Levchenko, A O; Mesyats, Gennadii A; Seleznev, L V; Sinitsyn, D V; Smetanin, Igor V; Sunchugasheva, E S; Ustinovskii, N N; Shutov, A V [P N Lebedev Physics Institute, Russian Academy of Sciences, Moscow (Russian Federation)

2013-04-30T23:59:59.000Z

379

EV America Skid Test Procedure  

NLE Websites -- All DOE Office Websites (Extended Search)

6 6 Revision 2 Effective October 1, 2007 Braking Test Prepared by Electric Transportation Applications Prepared by: _______________________________ Date: _________ Roberta Brayer Approved by: _________________________________________________ Date: _______________ Donald Karner Procedure ETA-HTP06 Revision 2 i TABLE OF CONTENTS 1. Objectives 1 2. Purpose 1 3. Documentation 1 4. Initial Conditions and Prerequisites 1 5. Testing Activity Requirements 3 5.3 Dry Controlled Test 4 6. Glossary 5 7. References 7 Appendices Appendix A - Handling Pad Test Data Sheet 8

380

Reducing Fuel Consumption through Semi-Automated Platooning with Class 8 Tractor Trailer Combinations (Poster)  

SciTech Connect

This poster describes the National Renewable Energy Laboratory's evaluation of the fuel savings potential of semi-automated truck platooning. Platooning involves reducing aerodynamic drag by grouping vehicles together and decreasing the distance between them through the use of electronic coupling, which allows multiple vehicles to accelerate or brake simultaneously. The NREL study addressed the need for data on American style line-haul sleeper cabs with modern aerodynamics and over a range of trucking speeds common in the United States.

Lammert, M.; Gonder, J.

2014-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "brakes regenerative braking" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Evaluation of oxides of nitrogen emissions for the purpose of their transient regulation from a direct injection diesel engine  

Science Journals Connector (OSTI)

The concept of defining a regulatory standard for the maximum allowable emissions of oxides of nitrogen (NOx) from a heavy-duty diesel engine on an instantaneous basis is presented. The significance of this concept from a regulatory point of view is the possibility to realise a steady brake specific NOx emissions result independent of the test schedule used. The emissions of oxides of nitrogen from a state-of-the-art direct injection diesel engine have been examined on an integral as well as on an instantaneous basis over the Federal Test Procedure as well as over several other arbitrary transient cycles generated for this study. Three candidate standards of specific NOx emissions have been evaluated on a real-time, continuous basis. These include brake power specific, fuel mass specific, and carbon dioxide mass specific NOx emissions. Retaining the stock engine control module, the carbon dioxide specific emissions of NOx have been shown to be the most uniform, varying only by about 30% of its mean value regardless of the test schedule or engine operation. The instantaneous fuel specific NOx emissions are shown to be relatively less invariant and the least steady are the brake power specific emissions with a coefficient of variation of up to 200%. Advancing injection timing has been shown to have a wide range of authority over the specific emissions of oxides of nitrogen regardless of the units used, when operating at full load in the vicinity of peak torque speeds. The carbon dioxide specific NOx emissions have shown a linear dependence on the power specific emissions, independent of the examined operating conditions. The trade-off between better brake thermal efficiency, lower exhaust gas temperature at advanced timing and lower NOx emissions has also been shown to be independent of the units of the specific standard used.

Yasser Yacoub; Chris Atkinson

2001-01-01T23:59:59.000Z

382

A comparative study of collection efficiencies using 0.80 and 1.2 micrometer pore size filters in evaluating airborne asbestos dust  

E-Print Network (OSTI)

concerning the use of respirators by weavers of asbestos to avoid inhalation of the fibers. Charlemagne cleaned his asbestos tablecloth by passing it through fire. 7 The use of asbestos began more than 4. 500 years ago but did not become widespread until... its use in floor- tile, roofing fe" ts, and shingles, cements, textiles, brake linings, clutch facings, papers, and protective co &tinge ~ Asbestosis Inhalation of' significant amounts of' asbestos dust over an extended period of time can produce...

Holt, Grady Lynn

2012-06-07T23:59:59.000Z

383

Design and fabrication of advanced materials from Illinois coal wastes. Quarterly report, 1 March 1995--31 May 1995  

SciTech Connect

The main goal of this project is to develop a bench-scale procedure to design and fabricate advanced brake and structural composite materials from Illinois coal combustion residues. Scanning electron microscopy (SEM), differential scanning calorimetry (DSC), differential thermal analysis (DTA), and transmission-Fourier transform infrared (FTIR) were conducted on PCC fly ash (Baldwin), FBC fly ash (ADM unit1-6), FBC fly ash (S.I. coal), FBC spent bed ash (ADM unit1-6), bottom ash, and scrubber sludge (CWLP) residues to characterize their geometrical shapes, mineral phases, and thermal stability. Our spectroscopic results indicate that the scrubber sludge is mainly composed of a gypsum-like phase whose lattice structure is different from the lattice structure of conventional gypsum, and sludge does not contain hannebachite (CaSO{sub 3}0.5H{sub 2}O) phase. In the second and third quarters the focus of research has been on developing protocols for the formation of advanced brake composites and structural composites. Our attempts to fabricate brake frictional shoes, in the form of 1.25 inch disks, from PCC fly ash, FBC spent bed ash, scrubber sludge, coal char, iron particles, and coal tar were successful. Based on the experience gained and microscopic analyses, we have now upscaled our procedures to fabricate 2.5 inch diameter disks from coal combustion residues. The SEM and Young`s modulus analyses of brake composites fabricated at 400 psi < Pressure < 2200 psi suggest pressure has a strong influence on the particle packing and the filling of interstices in our composites.

Malhotra, V.M.; Wright, M.A.

1995-12-31T23:59:59.000Z

384

Design, implementation and preliminary evaluation of displacement and force control sticks on a flight simulator  

E-Print Network (OSTI)

in every pursuit of mine. NOMENCLATURE Symbols A/D adbp Analog to digital Analog L digital board pointer bhp Brake horse power Diameter of propellor D/A FML Digital to analog Flight mechanics laboratory fpm Feet per minute fps Feet per second... rpm Revolutions per minute vn Airspeed VASI VME Visual aid slope indicator VERSA module device Vertical velocity Distance from threshold Difference from mean Distance from centerline Denotes deviation from desired value Glide slope angle...

Venugopal, Ravinder

2012-06-07T23:59:59.000Z

385

Friction of Materials for Automotive Applications  

SciTech Connect

This brief overview of friction-related issues in materials for automobiles is invited for a special issue on automotive materials in the ASM journal AM&P. It describes a range of areas in a ground vehicle in which friction must be controlled or minimized. Applications range from piston rings to tires, and from brakes to fuel injector components. A perspective on new materials and lubricants, and the need for validation testing is presented.

Blau, Peter Julian [ORNL

2013-01-01T23:59:59.000Z

386

Reducing Emissions of Persistent Organic Pollutants from a Diesel Engine by Fueling with Water-Containing Butanol Diesel Blends  

Science Journals Connector (OSTI)

An increasing energy demand and environmental pollution has motivated a search for bio-fuels, such as bio-diesels(1, 2) and bio-alcohols,(3, 4) that can be used as alternative fuels for diesel engines. ... In general, both bio-diesel and bio-alcohols, such as ethanol and butanol, have the advantages of higher brake thermal efficiency (BTE) and lower emissions of particulate matter (PM), carbon monoxide (CO) and hydrocarbons (HC). ... Diesel Engine and Test Cycle ...

Yu-Cheng Chang; Wen-Jhy Lee; Hsi-Hsien Yang; Lin-Chi Wang; Jau-Huai Lu; Ying I. Tsai; Man-Ting Cheng; Li-Hao Young; Chia-Jui Chiang

2014-04-16T23:59:59.000Z

387

Second-generation heliostat development. Final report  

SciTech Connect

The design, manufacture, testing and cost analysis of the second generation heliostat are described in volume I. Volume II consists of appendices of supporting material. These include the drawing tree for the heliostat, structural data of the rack assembly, drive mechanism, and mirror assemblies, tests and results, a trade study on the pedestal foundation design, cost analysis worksheets, study of an edge-support mirror module, and a study of a single-motor, differential brake heliostat drive mechanism. (LEW)

Not Available

1981-04-01T23:59:59.000Z

388

A diesel engine study of conventional and alternative diesel and jet fuels: Ignition and emissions characteristics  

Science Journals Connector (OSTI)

Abstract Measurements of ignition delay, CO and NO emissions, and fuel consumption were carried out in a light-duty single-cylinder direct-injection diesel engine for operation with petroleum and alternative hydroprocessed and FischerTropsch diesel and jet fuels. Ignition measurements carried out for a fixed engine speed and injection timing quantify the decrease in in-cylinder ignition delay with increasing derived cetane number (DCN) over a range of DCN relevant to diesel engine operation (DCN=4080) and show no discernible dependence of ignition delay on other fuel properties. Brake specific fuel consumption (BSFC) was found to decrease with increasing DCN with strong correlation due to a reduction in ignition time for fixed-injection-timed operation. Brake specific CO emissions were also found to decrease with increasing DCN due to increased time provided for CO burn out due to earlier ignition. Brake specific NO emissions were found to decrease with increasing hydrogen-to-carbon (H/C) ratio, due to the lower peak combustion temperatures and thermal \\{NOx\\} occurring for fuels with higher H/C.

Sandeep Gowdagiri; Xander M. Cesari; Mingdi Huang; Matthew A. Oehlschlaeger

2014-01-01T23:59:59.000Z

389

Revised Pulsar Spindown  

SciTech Connect

We address the issue of electromagnetic pulsar spindown by combining our experience from the two limiting idealized cases which have been studied in great extent in the past: that of an aligned rotator where ideal MHD conditions apply, and that of a misaligned rotator in vacuum. We construct a spindown formula that takes into account the misalignment of the magnetic and rotation axes, and the magnetospheric particle acceleration gaps. We show that near the death line aligned rotators spin down much slower than orthogonal ones. In order to test this approach, we use a simple Monte Carlo method to simulate the evolution of pulsars and find a good fit to the observed pulsar distribution in the P-{dot P} diagram without invoking magnetic field decay. Our model may also account for individual pulsars spinning down with braking index n < 3, by allowing the corotating part of the magnetosphere to end inside the light cylinder. We discuss the role of magnetic reconnection in determining the pulsar braking index. We show, however, that n {approx} 3 remains a good approximation for the pulsar population as a whole. Moreover, we predict that pulsars near the death line have braking index values n > 3, and that the older pulsar population has preferentially smaller magnetic inclination angles. We discuss possible signatures of such alignment in the existing pulsar data.

Contopoulos, Ioannis; /Athens Academy; Spitkovsky, Anatoly; /KIPAC, Menlo Park

2005-12-14T23:59:59.000Z

390

Effect of a homogeneous combustion catalyst on the combustion characteristics and fuel efficiency in a diesel engine  

Science Journals Connector (OSTI)

The influence of a ferrous picrate based homogeneous combustion catalyst on the combustion characteristics and fuel efficiency was studied using a fully instrumented diesel engine. A naturally aspirated four stroke, single cylinder, air cooled, direct injection diesel engine was tested at engine speeds of 2800rpm, 3200rpm and 3600rpm under variable load conditions, with different dosing ratio of the catalyst in a commercial diesel fuel. The results indicated that the brake specific fuel consumption decreased and the brake thermal efficiency increased with the addition of the catalyst. At the catalyst dosing ratio of 1:10,000, the brake specific fuel consumption was reduced by 3.34.2% at light engine load of 0.12MPa and 2.02.4% at heavy engine load of 0.4MPa due to the application of the catalyst. From the in-cylinder pressure and heat release rate analysis, it was found that the catalyst reduced ignition delay and combustion duration of fuel in the engine, resulting in slightly higher peak cylinder pressure and faster heat release rate.

Mingming Zhu; Yu Ma; Dongke Zhang

2012-01-01T23:59:59.000Z

391

Artificial neural networks based prediction of performance and exhaust emissions in direct injection engine using castor oil biodiesel-diesel blends  

Science Journals Connector (OSTI)

In this study the performance and emission characteristics of a direct injection diesel engine using castor oil biodiesel (COB)-diesel blended fuels were investigated experimentally and then predicted by artificial neural networks. For this aim castor oil was converted to its biodiesel via transesterification approach. Then the effects of the biodiesel percentage in blend engine load and speed on brake power brake specific fuel consumption (BSFC) nitrogen oxides (NOx) carbon dioxide (CO2) carbon monoxide (CO) and particle matter (PM) have been considered. Fuel blends with various percentages of biodiesel (0% 5% 10% 15% 20% 25% and 30%) at various engine speeds and loads were tested. The results indicated that blends of COB with diesel fuel provide admissible engine performance; on the other side emissions decreased so much. Two types of neural networks a group method of data handling (GMDH) and feed forward were used for modeling of the diesel engine to predict brake power BSFC and exhaust emissions such as CO CO2 NOx and PM values. The comparison results demonstrate the superiority of the feed forward neural networkmodels over GMDH type models in terms of the statistical measures in the training and testing data but in the number of hidden neurons and model simplicity GMDH models are preferred.

M. H. Shojaeefard; M. M. Etghani; M. Akbari; A. Khalkhali; B. Ghobadian

2012-01-01T23:59:59.000Z

392

An investigation of the engine performance, emissions and combustion characteristics of coconut biodiesel in a high-pressure common-rail diesel engine  

Science Journals Connector (OSTI)

Abstract An experimental investigation on engine performance, emissions, combustion and vibration characteristics with coconut biodiesel fuels was conducted in a high-pressure common-rail diesel engine under five different load operations (0.17, 0.34, 0.52, 0.69 and 0.86MPa). The test fuels included a conventional diesel fuel and four different fuel blends of coconut biodiesel (B10, B20, B30 and B50). The results showed that biodiesel blended fuels have significant influences on the BSFC (brake specific fuel consumption) and BSEC (brake specific energy consumption) at all engine loads. In general, the use of coconut biodiesel blends resulted in a reduction of BSCO (brake specific carbon monoxide) and smoke emissions regardless of the load conditions. A large reduction of 52.4% in smoke opacity was found at engine load of 0.86MPa engine load with B50. For combustion characteristics, a slightly shorter ignition delay and longer combustion duration were found with the use of biodiesel blends under all loading operations. It was found that generally the biodiesel blends produced lower peak heat release rate than baseline diesel. The vibration results showed that the largest reduction of 13.7% in RMS (root mean square) of acceleration was obtained with B50 at engine load of 0.86MPa with respect to the baseline diesel.

H.G. How; H.H. Masjuki; M.A. Kalam; Y.H. Teoh

2014-01-01T23:59:59.000Z

393

Syngas (H2/CO) in a spark-ignition direct-injection engine. Part 1: Combustion, performance and emissions comparison with CNG  

Science Journals Connector (OSTI)

Abstract The combustion, performance, and emissions of syngas (H2/CO) in a four-stroke, direct-injection, spark-ignition engine were experimentally investigated. The engine was operated at various speeds, ranging from 1500 to 2400rev/min, with the throttle being held in the wide-open position. The start of fuel injection was fixed at 180 before the top dead center, and the ignition advance was set at the maximal brake torque. The air/fuel ratio was varied from the technically possible lowest excess air ratio (?) to lean operation limits. The results indicated that a wider air/fuel operating ratio is possible with syngas with a very low coefficient of variation. The syngas produced a higher in-cylinder peak pressure and heat-release rate peak and faster combustion than for CNG. However, CNG produced a higher brake thermal efficiency (BTE) and lower brake specific fuel consumption (BSFC). The BTE and BSFC of the syngas were on par to those of CNG at higher speeds. For the syngas, the total hydrocarbon emission was negligible at all load conditions, and the carbon monoxide emission was negligible at higher loads and increased under lower load conditions. However, the emission of nitrogen oxides was higher at higher loads with syngas.

Ftwi Yohaness Hagos; A. Rashid A. Aziz; Shaharin A. Sulaiman

2014-01-01T23:59:59.000Z

394

Analysis of the Long Contra-flow Regenerative Heat Exchanger  

Science Journals Connector (OSTI)

......possibility of gas turbine engines and Stirling...in which the hot gas enters at one end...assumed that all the residual hot gas is ejected...operations begins the residual cold gas is ejected from...economies in gas turbines. The present paper......

A. J. WILLMOTT; R. J. THOMAS

1974-12-01T23:59:59.000Z

395

Low-pressure-ratio regenerative exhaust-heated gas turbine  

SciTech Connect

A design study of coal-burning gas-turbine engines using the exhaust-heated cycle and state-of-the-art components has been completed. In addition, some initial experiments on a type of rotary ceramic-matrix regenerator that would be used to transfer heat from the products of coal combustion in the hot turbine exhaust to the cool compressed air have been conducted. Highly favorable results have been obtained on all aspects on which definite conclusions could be drawn.

Tampe, L.A.; Frenkel, R.G.; Kowalick, D.J.; Nahatis, H.M.; Silverstein, S.M.; Wilson, D.G.

1991-01-01T23:59:59.000Z

396

A Regenerative High-Rise Tower in Shreveport, Louisiana  

E-Print Network (OSTI)

Renewal International (CRI) in 2001. In 2006, funded by a grant from the U.S. Environmental Protection Agency, workers removed the asbestos. Through a follow up grant from the U.S. Department of Energy to support the design process of a new CRI...

Garrison, M.

397

Precision manufacturing for clinical-quality regenerative medicines  

Science Journals Connector (OSTI)

...manufacturing procedures more completely...UK. Deming applied these widely...process analytical technology, manufacturing...solutions and technologies that have been...manufacture cannot be applied to cell therapies...development of new technologies, tools and...robotic flask handling platform was...

2012-01-01T23:59:59.000Z

398

Empty sky : 9/11 and performing regenerative violence  

E-Print Network (OSTI)

London: Verso, 2002. . Iraq: The Borrowed Kettle. London:Watching Babylon: The War in Iraq and Global Visual Culture.Newport, Frank. War in Iraq. Gallup.com. 1 April 2003.

Genna, Raimondo

2010-01-01T23:59:59.000Z

399

Macroporous n-GaP in Nonaqueous Regenerative Photoelectrochemical Cells  

Science Journals Connector (OSTI)

Michelle J. Price and Stephen Maldonado * ... Photoelectrochemical cells are attractive systems for the generation of energy-rich chemical fuels. ... (1-4) Generally, larger operating cell voltages than those obtained with commercial silicon (Si) photovoltaics under solar illumination at 1.5 air mass units (AMU) are needed to drive kinetically slow, multielectron charge-transfer reactions involved in fuel production. ...

Michelle J. Price; Stephen Maldonado

2009-06-22T23:59:59.000Z

400

Precision manufacturing for clinical-quality regenerative medicines  

Science Journals Connector (OSTI)

...healthcare. The ability to repair and replace damaged cells and...arthritis and trauma in the pipeline. RM is an emerging industry...surrounding cells to act as repair agents; and mobilizing existing...migrate to the affected area to repair the site of damage. (a...

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "brakes regenerative braking" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

Design and fabrication of advanced materials from Illinois coal wastes. Quarterly report, 1 December 1994--28 February 1995  

SciTech Connect

The main goal of this project is to develop a bench-scale procedure to design and fabricate advanced brake and structural composite materials from Illinois coal combustion residues. During the first two quarters of the project, the thrust of the work directed towards characterizing the various coal combustion residues and FGD residue, i.e., scrubber sludge. Scanning electron microscopy (SEM), differential scanning calorimetry (DSC), differential thermal analysis (DTA), and transmission-Fourier transform infrared (FTIR) were conducted on PCC fly ash (Baldwin), FBC fly ash (ADK unit l-6), FBC fly ash (S.I. coal), FBC spent bed ash (ADM, unit l-6), bottom ash, and scrubber sludge (CWLP) residues to characterize their geometrical shapes, mineral phases, and thermal stability. Our spectroscopic results indicate that the scrubber sludge is mainly composed of a gypsum-like phase whose lattice structure is different from the lattice structure of conventional gypsum, and sludge does not contain hannebachite (CaSO{sub 3}.0.5H{sub 2}O) phase. Our attempts to fabricate brake frictional shoes, in the form of 1.25 inch disks, from PCC fly ash, FBC spent bed ash, scrubber sludge, coal char, iron particles, and coal tar were successful. Based on the experience gained and microscopic analyses, we have now upscaled our procedures to fabricate 2.5 inch diameter disk,- from coal combustion residues. This has been achieved. The SEM and Young`s modulus analyses of brake composites fabricated at 400 psi < Pressure < 2200 psi suggest pressure has a strong influence on the particle packing and the filling of interstices in our composites. Also, these results along with mechanical behavior of the fabricated disks lead us to believe that the combination of surface altered PCC fly ash and scrubber sludge particles, together ed ash particles are ideal for our composite materials.

Malhotra, V.M.; Wright, M.A. [Southern Illinois Univ., Carbondale, IL (United States)

1995-12-31T23:59:59.000Z

402

Combustion behaviour of a heavy duty common rail marine Diesel engine fumigated with propane  

Science Journals Connector (OSTI)

This paper presents results from the testing of a heavy duty common rail marine Diesel engine with electronically controlled two stage liquid fuel injection, operating under load on a test bench with propane mixed into the inlet air at various rates. Results are presented for a range of engine loads, with brake mean effective pressure up to 22bar at 1800rpm. The electronic engine control unit is not modified and allowed to respond to the addition of propane according to its inbuilt map. This results in retarded injection timing with increased propane addition at some test points. At each test point, constant engine speed and brake torque are maintained for various rates of propane addition. Cylinder pressure and the injector activation voltage are recorded with a high speed data acquisition system. Apparent heat release rate is calculated from the measured cylinder pressure. At high rates of propane addition very high pressure rise rates and severe knock are measured. At the high brake mean effective pressure conditions tested, knock limits propane supply rates to less than 20% by energy. Small increases in thermal efficiency are indicated with moderate rates of propane addition. Exhaust emissions of NOx, CO, HC and smoke are measured. CO, HC and smoke emissions increase significantly with increasing propane addition. For high propane supply rates, two distinct peaks in heat release rate are measured. Analysis is made of the flammability of the propaneair mixtures at the elevated temperatures at the end of the compression stroke, using the modified BurgessWheeler Law. At propane supply rates greater than 25%, the propaneair mixture is flammable in its own right at compression temperature. The apparent heat release rate, fuel injection timing and flammability data allow analysis of the mechanism of the combustion process with propane fumigation.

L. Goldsworthy

2012-01-01T23:59:59.000Z

403

The Entire Engineering Archive  

NLE Websites -- All DOE Office Websites (Extended Search)

Engineering Archives Engineering Archives Engineering Archives, Since November 1991 Table of Contents: Strongest geometric figure Geometric figures - bridges High school preparation for engineering Engineering fields and mathematics Future of mechanical engineering Absorbing energy in a crash Braking force of automobiles US fast-breeder policy Fusion energy to power Electricity generation Photovoltaic motors Variable speed motor Space plane Building on the moon Why does the Shuttle turn on launch? Gyroscopes Triangulation Magnets in speakers Speaker impedance Permanent magnet manufacture E/M interference FM modulation Pressure rise in pipe expansion Drag coefficient and Reynolds' Number Boundary layers Cavitation Is it more efficient to turn off fluorescent Uninterruptable power supply Electrical current

404

Charge Depleting:  

NLE Websites -- All DOE Office Websites (Extended Search)

3 seconds 3 seconds Acceleration 1/4 Mile Time: 20.3 seconds Maximum Speed: 74.3 MPH Acceleration 1 Mile Maximum Speed: 103.4 MPH Charge Sustaining: Acceleration 0-60 MPH Time: 13.4 seconds Acceleration 1/4 Mile Time: 20.4 seconds Maximum Speed: 74.8 MPH Acceleration 1 Mile Maximum Speed: 104.0 MPH Brake Test @ 60 MPH Distance Required: 153.0 ft UDDS Fuel Economy 6 HWFET Fuel Economy 6 Distance (miles)

405

Charge Depleting:  

NLE Websites -- All DOE Office Websites (Extended Search)

0 seconds 0 seconds Acceleration 1/4 Mile Time: 20.1 seconds Maximum Speed: 75.7 MPH Acceleration 1 Mile Maximum Speed: 104.9 MPH Charge Sustaining: Acceleration 0-60 MPH Time: 12.8 seconds Acceleration 1/4 Mile Time: 20.0 seconds Maximum Speed: 75.7 MPH Acceleration 1 Mile Maximum Speed: 105.0 MPH Brake Test @ 60 MPH Distance Required: 126.8 ft UDDS Fuel Economy 6 HWFET Fuel Economy 6 Distance (miles)

406

NREL: Gearbox Reliability Collaborative - Gearbox Reliability Collaborative  

NLE Websites -- All DOE Office Websites (Extended Search)

Projects Projects Gearbox deficiencies are the result of many factors. Through gearbox modeling and testing, condition monitoring, and the failure database, the collaborative is expanding the industry's knowledge base, recommending efficient and cost-effective improvements, and facilitating immediate improvements in the gearbox life cycle. Gearbox Modeling and Testing Illustration of representative gearbox including the hub, main bearing, main shaft, gearbox, brake, high speed shaft, generator, and bed plate. A complete gearbox redesign has been completed in a collaborative effort between NREL and industry partners. This process documented and analyzed the design process and produced a new gearbox design that integrates knowledge from previous Gearbox Reliability Collaborative (GRC) activities.

407

FreedomCAR and Fuel Partnership 2007 Highlights of Technical Accomplishments  

NLE Websites -- All DOE Office Websites (Extended Search)

FreedomCAR FreedomCAR and Fuel Partnership 2007 Highlights of Technical Accomplishments Table of Contents Item Page Preface iv Vehicle Technologies Advanced Combustion & Emissions Control * Injection Timing Strongly Impacts H 2 - Air Mixing in a Direct-Injection Hydrogen Engine 1 * Demonstrated 2007 Engine Efficiency Milestone of 42% Peak Brake Thermal Efficiency 2 * Kinetic Mechanism for Diesel Lean NO x Trap Regeneration 3 * Studies of Lean NO x Trap Aftertreatment Contribute to Diesel Vehicle Commercialization 4 Electrical & Electronics * Floating Loop Inverter 5 * Sintered Die Attachment 6 * Thermal Systems Analysis for Advanced Vehicle Power Electronics 7 * High Temperature DC Bus Capacitors 8 Electrochemical Energy Storage

408

Electric machine for hybrid motor vehicle  

DOE Patents (OSTI)

A power system for a motor vehicle having an internal combustion engine and an electric machine is disclosed. The electric machine has a stator, a permanent magnet rotor, an uncluttered rotor spaced from the permanent magnet rotor, and at least one secondary core assembly. The power system also has a gearing arrangement for coupling the internal combustion engine to wheels on the vehicle thereby providing a means for the electric machine to both power assist and brake in relation to the output of the internal combustion engine.

Hsu, John Sheungchun (Oak Ridge, TN)

2007-09-18T23:59:59.000Z

409

Data Protection and the Right to Reputation: Filling the Gaps After the Defamation Act 2013  

E-Print Network (OSTI)

and ideas informs political debate. It is a safety value: people are more ready to accept decisions that go against them if they can in principle seek to influence them. It acts as a brake on the abuse of power by public officials. It facilitates... to the publication of a defamatory statement.51 In Godfrey v Demon Internet [2001] Q.B. 201 an Internet Service Provider (IPS) sought to rely on this defence in relation to the republication of an anonymous posting made on a United States-based newsgroup...

Erdos, David

2014-01-01T23:59:59.000Z

410

The Coughing Pulsar Magnetosphere  

E-Print Network (OSTI)

Polar magnetospheric gaps consume a fraction of the electric potential that develops accross open field lines. This effect modifies significantly the structure of the axisymmetric pulsar magnetosphere. We present numerical stead-state solutions for various values of the gap potential. We show that a charge starved magnetosphere contains significantly less electric current than one with freely available electric charges. As a result, electromagnetic neutron star braking becomes inefficient. We argue that the magnetosphere may spontaneously rearrange itself to a lower energy configuration through a dramatic release of electromagnetic field energy and magentic flux. Our results might be relevant in understanding the recent December 27, 2004 burst observed in SGR 1806-20.

Ioannis Contopoulos

2005-07-08T23:59:59.000Z

411

Dry powder mixes comprising phase change materials  

DOE Patents (OSTI)

A free flowing, conformable powder-like mix of silica particles and a phase change material (PCM) is provided. The silica particles have a critical size of about 0.005 to about 0.025 microns and the PCM must be added to the silica in an amount of 75% or less PCM per combined weight of silica and PCM. The powder-like mix can be used in tableware items, medical wraps, tree wraps, garments, quilts and blankets, and particularly in applications for heat protection for heat sensitive items, such as aircraft flight recorders, and for preventing brake fade in automobiles, buses, trucks and aircraft. 3 figs.

Salyer, I.O.

1995-12-26T23:59:59.000Z

412

Dry powder mixes comprising phase change materials  

DOE Patents (OSTI)

A free flowing, conformable powder-like mix of silica particles and a phase change material (PCM) is provided. The silica particles have a critical size of about 0.005 to about 0.025 microns and the PCM must be added to the silica in an amount of 75% or less PCM per combined weight of silica and PCM. The powder-like mix can be used in tableware items, medical wraps, tree wraps, garments, quilts and blankets, and particularly in applications for heat protection for heat sensitive items, such as aircraft flight recorders, and for preventing brake fade in automobiles, buses, trucks and aircraft. 3 figures.

Salyer, I.O.

1994-12-06T23:59:59.000Z

413

Vertical axis wind turbine  

SciTech Connect

Wind turbines are largely divided into vertical axis wind turbines and propeller (Horizontal axis) wind turbines. The present invention discloses a vertical axis high speed wind turbine provided with a starting and braking control system. This vertical axis wind turbine is formed by having blades of a proper airfoil fitted to respective supporting arms provided radially from a vertical rotary axis by keeping the blade span-wise direction in parallel with the axis and being provided with a low speed control windmill in which the radial position of each operating piece varies with a centrifugal force produced by the rotation of the vertical rotary axis.

Kato, Y.; Seki, K.; Shimizu, Y.

1981-01-27T23:59:59.000Z

414

Regulated apparatus for the generation of electrical energy, such as a wind generator  

SciTech Connect

The invention relates to a regulated apparatus for the generation of electrical energy. A wind generator comprises a propeller having fixed blades and a generator connected by a transmission to the propeller and having sets of main and secondary brushes. The hub of the propeller comprises a rotor of an eddy-current brake whose inductor stator is supplied by a current delivered, starting from a certain speed , by the secondary brushes of the generator which are angularly shifted relative to their neutral position.

Kant, M.

1980-04-15T23:59:59.000Z

415

Mack LNG vehicle development  

SciTech Connect

The goal of this project was to install a production-ready, state-of-the-art engine control system on the Mack E7G natural gas engine to improve efficiency and lower exhaust emissions. In addition, the power rating was increased from 300 brake horsepower (bhp) to 325 bhp. The emissions targets were oxides of nitrogen plus nonmethane hydrocarbons of less than 2.5 g/bhp-hr and particulate matter of less than 0.05 g/bhp-hr on 99% methane. Vehicle durability and field testing were also conducted. Further development of this engine should include efficiency improvements and oxides of nitrogen reductions.

Southwest Research Institute

2000-01-05T23:59:59.000Z

416

Novel estimation of tyre-road friction coefficient and slip ratio using electrical parameters of traction motor for electric vehicles  

Science Journals Connector (OSTI)

The estimation of the friction coefficient and the slip ratio is crucial for advanced traction control or anti-brake control of electric vehicles. In this paper, dynamic behaviours of electrical parameters of the traction motor under road change are modelled and analysed. Novel estimation only using the measurements of the armature voltage and the current is proposed. The proposed method is much quicker than traditional methods, contributing to adjust the vehicle's motion state more quickly and precisely. Further, it can eliminate the speed measuring devices of the wheel speed and the vehicle speed. Simulations verify the effectiveness.

Guoqing Xu; Kun Xu; Weimin Li

2013-01-01T23:59:59.000Z

417

Optimization of an Irreversible Diesel Cycle: Experimental Results of a Ceramic Coated Indirect-Injection Supercharged Diesel Engine  

Science Journals Connector (OSTI)

Technical Education Faculty and Department of Mechanical Engineering, Sakarya University, Esentepe 54187, Sakarya, Turkey, and Maritime Faculty, Marine Engineering, Istanbul Technical University, Tuzla, Turkey ... Effects of a ceramic coating on performance and exhaust emissions in the LHR engine have been compared to those obtained from the standard (STD) diesel engine based on the comparison of the STD and the LHR engines for identical airflow and brake mean effective pressure. ... Gataowski, J. A. Evaluation of a selectively-cooled single-cylinder 0.5-L Diesel engine; SAE paper No. 900693, Society of Automotive Engineers: Warrendale, PA, 1990. ...

A. Parlak; H. Yasar; H. S. Soyhan; C. Deniz

2008-04-25T23:59:59.000Z

418

Review and evaluation of Transamerica Delaval, Inc. , diesel engine reliability and operability: Grand Gulf Nuclear Station Unit 1  

SciTech Connect

PNL and its consultants conclude that the TDI diesel engines at the GGNS have the needed operability and reliability to fulfill their intended (auxiliary) emergency power function for the first refueling cycle. This conclusion is reached with a number of understandings regarding limits to the engine requirements, NRC concurrence with MP and L findings/conclusions regarding items to be supplied to NRC, limitations on the engine Brake Mean Effective Pressure (BMEP), and MP and L's implementation of the modifications to their proposed surveillance and maintenance program.

Not Available

1984-07-01T23:59:59.000Z

419

Combustion and emission characteristics of diesel engine fuelled with methyl esters of pungam oil and rice bran oil  

Science Journals Connector (OSTI)

Biodiesel derived from vegetable oils and animal fats can be used in diesel engines with little or no modifications. In this work, the combustion, performance and emission characteristics of various biodiesel (rice bran oil and pungam oil) and their blends are evaluated in a direct injection diesel engine. Lower ignition delay, higher peak pressure and heat release rate with almost same brake thermal efficiency are obtained for 20% biodiesel blend as compared with diesel fuel. They exhibited lower unburned hydrocarbon, carbon monoxide and soot emissions with a penalty of higher NOx emissions.

G. Lakshmi Narayana Rao; N. Nallusamy; S. Sampath; K. Rajagopal

2008-01-01T23:59:59.000Z

420

Effects of CH4, H2 and CO2 Mixtures on SI Gas Engine  

Science Journals Connector (OSTI)

Abstract Performance of a four-stroke spark ignition gas engine operated on mixtures of CH4, H2 and CO2 was studied. Experiments were carried out at a constant engine speed of 2,000rpm and throttle opening of 14% with various equivalence ratios. The results showed that the highest brake power output of 12.5kW and 35% thermal efficiency were achieved when operated with the mixture of 69.70% CH4, 9.95% H2 and 20.45% CO2 and the equivalence ratios between 1.0 and 0.82.

S. Chuayboon; S. Prasertsan; T. Theppaya; K. Maliwan; P. Prasertsan

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "brakes regenerative braking" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Influence of Biodiesel Fuel on the Combustion and Emission Formation in a Direct Injection (DI) Diesel Engine  

Science Journals Connector (OSTI)

The injector needle lift trace at low engine speed was almost identical for both fuels, while at maximum engine speed, a shorter injection delay was observed for biodiesel fuel and the injector needle opened earlier as with D2 fuel. ... Figure 1 Comparison of the engine torque (M), fuel consumption (Gh), and brake specific energy consumption (ge) at full load for biodiesel fuel (BD) and D2 fuel in (a) TAM and (b) MAN engines. ... (7)?Sanatore, A.; Cardone, M.; Rocco, V.; Prati, M. V. A comparative analysis of combustion process in DI diesel engine fueled with biodiesel and diesel fuel. ...

Ales Hribernik; Breda Kegl

2007-05-01T23:59:59.000Z

422

Three-dimensional finite element modeling of a magnet array spinning above a conductor  

SciTech Connect

Drag forces due to eddy currents induced by the relative motion of a conductor and a magnetic field occur in many practical devices: motors, brakes, magnetic bearings, and magnetically levitated vehicles. Recently, finite element codes have included solvers for 3-D eddy current geometries and have the potential to be very useful in the design and analysis of these devices. In this paper, numerical results from three-dimensional modeling of a magnet array spinning above a conductor are compared to experimental results in order to assess the capabilities of these codes.

Lorimer, W.L.; Lieu, D.K. [Univ. of California, Berkeley, CA (United States). Dept. of Mechanical Engineering; Hull, J.R.; Mulcahy, T.M.; Rossing, T.D. [Argonne National Lab., IL (United States)

1993-12-31T23:59:59.000Z

423

Recent Trends in Superstring Phenomenology  

E-Print Network (OSTI)

We review for non-experts possible phenomenological scenari in String Theory. In particular we focus on vacuum configurations with intersecting and/or magnetized unoriented D-branes. We will show how a TeV scale tension may be compatible with the existence of Large Extra Dimensions and how anomalous U(1)'s can give rise to interesting signatures at LHC or in cosmic rays. Finally, we discuss unoriented D-brane instantons as a source of non-perturbative effects that can contribute to moduli stabilization and susy braking in combination with fluxes. We conclude with an outlook and directions for future work.

Massimo Bianchi

2009-09-09T23:59:59.000Z

424

Part-load performance and emissions of a spark ignition engine fueled with RON95 and RON97 gasoline: Technical viewpoint on Malaysias fuel price debate  

Science Journals Connector (OSTI)

Abstract Due to world crude oil price hike in the recent years, many countries have experienced increase in gasoline price. In Malaysia, where gasoline are sold in two grades; RON95 and RON97, and fuel price are regulated by the government, gasoline price have been gradually increased since 2009. Price rise for RON97 is more significant. By 2014, its per liter price is 38% more than that of RON95. This has resulted in escalated dissatisfaction among the mass. People argued they were denied from using a better fuel (RON97). In order to evaluate the claim, there is a need to investigate engine response to these two gasoline grades. The effect of gasoline RON95 and RON97 on performance and exhaust emissions in spark ignition engine was investigated on a representative engine: 1.6L, 4-cylinder Mitsubishi 4G92 engine with CR 11:1. The engine was run at constant speed between 1500 and 3500rpm with 500rpm increment at various part-load conditions. The original engine ECU, a hydraulic dynamometer and control, a combustion analyzer and an exhaust gas analyzer were used to determine engine performance, cylinder pressure and emissions. Results showed that RON95 produced higher engine performance for all part-load conditions within the speed range. RON95 produced on average 4.4% higher brake torque, brake power, brake mean effective pressure as compared to RON97. The difference in engine performance was more significant at higher engine speed and loads. Cylinder pressure and ROHR were evaluated and correlated with engine output. With RON95, the engine produces 2.3% higher fuel conversion efficiency on average but RON97 was advantageous with 2.3% lower brake specific fuel consumption throughout all load condition. In terms of exhaust emissions, RON95 produced 7.7% lower \\{NOx\\} emission but higher CO2, CO and HC emissions by 7.9%, 36.9% and 20.3% respectively. Higher octane rating of gasoline may not necessarily beneficial on engine power, fuel economy and emissions of polluting gases. Even though there is some advantage using RON97 in terms of emission reduction of CO2, CO and HC, the 38% higher price and higher \\{NOx\\} emission is more expensive in the long run. Therefore using RON95 is economically better and environmentally friendlier. The findings provide some techno-economic evaluation on the fuel price debate that surround the Malaysias population in the recent years. The increased of fuel price may have limited their ability to use higher octane gasoline but it did not negatively affecting the users as they perceive.

Taib Iskandar Mohamad; Heoy Geok How

2014-01-01T23:59:59.000Z

425

New coke-sorting system at OAO Koks  

SciTech Connect

A new coke-sorting system has been introduced at OAO Koks. It differs from the existing system in that it has no bunkers for all-purpose coke but only bunkers for commercial coke. In using this system with coke from battery 4, the crushing of the coke on conveyer belts, at roller screens, and in the commercial-coke bunkers is studied. After installing braking elements in the coke path, their effectiveness in reducing coke disintegration and improving coke screening is investigated. The granulometric composition and strength of the commercial coke from coke battery 3, with the new coke-sorting system, is evaluated.

B.Kh. Bulaevskii; V.S. Shved; Yu.V. Kalimin; S.D. Filippov [OAO Koks, Kemerovo (Russian Federation)

2009-05-15T23:59:59.000Z

426

Licenses Available in Energy & Utilities | ORNL  

NLE Websites -- All DOE Office Websites (Extended Search)

Energy and Utilities Energy and Utilities SHARE Energy and Utilities 200000741 Automatic Detection of Bone Fragments in Poultry 200000782 Droplet Acoustic Wave Sensors 200000784 Method for the Enhancement of Aqueous Cleaning Operations 200000785 Bulk Metallic Glass Surgical Tools and Orthopedic Implants 200000789 Device for Separating CO2 from Fossil Power Plant Emissions 200000791 Wheel Reaction Force Sensing Apparatus/Whole-Vehicle Brake Tester 200000796 Fossil Fuel Combined Cycle Power System 200000799 Method for Accelerated Curing of Coatings for Explosion Prevention and Other Needs Using Microwave Technology 200000807 Effective Switching Frequency Multiplier Inverter 200000809 Improved Response Microcantilever Thermal Detector 200000813 High Slot Utilization System for Electric Machines

427

The Coughing Pulsar Magnetosphere  

E-Print Network (OSTI)

Polar magnetospheric gaps consume a fraction of the electric potential that develops accross open field lines. This effect modifies significantly the structure of the axisymmetric pulsar magnetosphere. We present numerical stead-state solutions for various values of the gap potential. We show that a charge starved magnetosphere contains significantly less electric current than one with freely available electric charges. As a result, electromagnetic neutron star braking becomes inefficient. We argue that the magnetosphere may spontaneously rearrange itself to a lower energy configuration through a dramatic release of electromagnetic field energy and magentic flux. Our results might be relevant in understanding the recent December 27, 2004 burst observed in SGR 1806-20.

Contopoulos, I

2005-01-01T23:59:59.000Z

428

MaintenanceRecords  

NLE Websites -- All DOE Office Websites (Extended Search)

1/22/2010 1/22/2010 4,894 Changed oil and filter $60.70 12/18/2010 10,075 Changed oil and filter $60.70 12/22/2010 10,651 Replaced driver-side headlight $32.78 2/18/2011 20,255 Changed oil and filter $60.70 3/29/2011 25,267 Changed oil and filter $60.70 5/16/2011 30,509 Changed oil and filter and replaced fanbelt $116.20 6/28/2011 34,831 Replaced alternator/water pump belt and tow fees $80.50 7/8/2011 35,652 Changed oil and filter and replaced air filter $80.88 7/13/2011 35,885 Installed two tires $277.25 7/27/2011 36,982 Towed vehicle and replaced alternator/water pump belt $300.00 8/8/2011 37,738 Repaired left front tire $10.00 9/1/2011 40,384 Replaced alternator belt $45.00 9/8/2011 40,948 Changed oil and filter $60.70 10/22/2011 43,484 30K mile service $192.45 10/26/2011 43,492 Replaced front brake pads and cleaned and adjusted rear brake shoes

429

Full Hybrid: Cruising  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Cruising button highlighted Passing button Braking button Stopped button Cruising button highlighted Passing button Braking button Stopped button CRUISING PART 1 At speeds above mid-range, both the engine and electric motor are used to propel the vehicle. The gasoline engine provides power to the drive-train directly and to the electric motor via the generator. Go to next… stage graphic: vertical blue rule Main stage: See through car with battery, engine, generator, power split device, and electric motor visible. The car is moving. There are blue arrows flowing from the generator to the electric motor to the power split device to the front wheels. There are red arrows flowing from the gasoline engine to the generator to the power split device to the front wheels. Main stage: See through car with battery, engine, generator, power split device, and electric motor visible. The car is moving. There are blue arrows flowing from the generator to the electric motor to the power split device to the front wheels. There are red arrows flowing from the gasoline engine to the generator to the power split device to the front wheels.

430

FOR SALE  

NLE Websites -- All DOE Office Websites (Extended Search)

6 Dodge Avenger ES, v6, sharp, 68K miles, 6 Dodge Avenger ES, v6, sharp, 68K miles, brand new tires & brakes, Looks & drives like new, $11,900. Call (847) 438-3193 or Joe x3743. s '92 Nissan Stanza SE, 4dr sedan, 5 spd manual, a/c, pb,ps, pw, moon/sun roof, 58K miles, $5,500. K. Gray, x4013 or kgray@fnal.gov. s '89 Toyota Corolla, 120K miles, very good cond., 4 door, a/c, $3,500 x8614 or wolfram@fnal.gov. s '89 Ford Taurus Wagon, 105K miles, $1,300 (avail. mid Oct), x8614 or wolfram@fnal.gov. s '89 Honda Accord DX, White, 5 spd, am/fm/cd, clean, 135K miles, new cv joints, very recent brakes, front tires, timing belt, water pump, & alternator. Very good cond. runs great, $2500. Call x5768 or (630) 879 - 5650. s '86 VW Golf GTI 3-dr htchbk, black, 5-sp, 133K highway miles, a/c, CD am/fm, sunroof,

431

MaintenanceRecords  

NLE Websites -- All DOE Office Websites (Extended Search)

8/11/2011 8/11/2011 6,825 Changed oil and filter and replaced alternator belt $122.46 10/13/2011 11,287 Purchased two rear tires $120.24 10/19/2011 12,360 Changed oil and filter $64.20 11/23/2011 14,209 Replaced tailgate latch assembly $94.80 1/17/2012 18,254 Changed oil and filter $64.20 3/5/2012 22,872 Replaced serpentine belt $45.00 3/24/2012 24,753 Changed oil and filter $64.20 7/9/2012 30,143 30K mile service $215.75 8/14/2012 35,276 Changed oil and filter $64.33 9/6/2012 39,081 Replaced two tires $196.52 9/12/2012 39,989 Replaced serpentine belt $45.00 9/13/2012 40,377 Changed oil and filter $64.33 9/21/2012 41,795 Replaced two tires $181.83 10/1/2012 43,067 Replaced front brake pads, checked rear brakes, and resurfaced rotors $209.15 10/12/2012 45,457 Changed oil and filter $64.33 11/27/2012 50,630 Changed oil and filter

432

Impact of high energy ball milling on the nanostructure of magnetitegraphite and magnetitegraphitemolybdenum disulphide blends  

SciTech Connect

Different, partly complementary and partly redundant characterization methods were applied to study the transition of magnetite, graphite and MoS{sub 2} powders to mechanically alloyed nanostructures. The applied methods were: Transmission electron microscopy (TEM), Mssbauer spectroscopy (MS), Raman spectroscopy (RS), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The main objective was to prepare a model material providing the essential features of a typical tribofilm forming during automotive braking, and to assess the impact of different constituents on sliding behaviour and friction level. Irrespective of the initial grain size, the raw materials were transferred to a nanocrystalline structure and mixed on a nanoscopic scale during high energy ball milling. Whereas magnetite remained almost unchanged, graphite and molybdenum disulphide were transformed to a nanocrystalline and highly disordered structure. The observed increase of the coefficient of friction was attributed to a loss of lubricity of the latter ingredient due to this transformation and subsequent oxidation. - Highlights: Characterization of microstructural changes induced by high energy ball milling Assessment of the potential of different characterization methods Impact of mechanical alloying on tribological performance revealed by tests Preparation of an artificial third body resembling the one formed during braking.

sterle, W., E-mail: Werner.oesterle@bam.de [BAM Federal Institute for Materials Research and Testing, 12200 Berlin (Germany); Orts-Gil, G.; Gross, T.; Deutsch, C. [BAM Federal Institute for Materials Research and Testing, 12200 Berlin (Germany); Hinrichs, R. [Instituto de Geocincias, UFRGS, P.O. Box 15001, 91501-970 Porto Alegre (Brazil); Vasconcellos, M.A.Z. [Instituto de Fsica, UFRGS, P.O. Box 15051, 91501-970 Porto Alegre (Brazil); Zoz, H.; Yigit, D.; Sun, X. [Zoz Group, 57482 Wenden (Germany)

2013-12-15T23:59:59.000Z

433

A Novel Integrated Magnetic Structure Based DC/DC Converter for Hybrid Battery/Ultracapacitor Energy Storage Systems  

SciTech Connect

This manuscript focuses on a novel actively controlled hybrid magnetic battery/ultracapacitor based energy storage system (ESS) for vehicular propulsion systems. A stand-alone battery system might not be sufficient to satisfy peak power demand and transient load variations in hybrid and plug-in hybrid electric vehicles (HEV, PHEV). Active battery/ultracapacitor hybrid ESS provides a better solution in terms of efficient power management and control flexibility. Moreover, the voltage of the battery pack can be selected to be different than that of the ultracapacitor, which will result in flexibility of design as well as cost and size reduction of the battery pack. In addition, the ultracapacitor bank can supply or recapture a large burst of power and it can be used with high C-rates. Hence, the battery is not subjected to supply peak and sharp power variations, and the stress on the battery will be reduced and the battery lifetime would be increased. Utilizing ultracapacitor results in effective capturing of the braking energy, especially in sudden braking conditions.

Onar, Omer C [ORNL

2012-01-01T23:59:59.000Z

434

Effects of oxygenated fuel blends on carbonaceous particulate composition and particle size distributions from a stationary diesel engine  

Science Journals Connector (OSTI)

Abstract A systematic study was conducted to evaluate and compare the effects of blending five different oxygenated compounds, diglyme (DGM), palm oil methyl ester (PME), dimethyl carbonate (DMC), diethyl adipate (DEA) and butanol (Bu) with ultralow sulfur diesel (ULSD), on engine performance, particulate mass concentrations, organic (OC) and elemental (EC) carbon fractions of the particles and particle size distributions from a single cylinder, direct injection stationary diesel engine with the engine working at a constant engine speed and at three engine loads. A small increase in the brake specific fuel consumption (BSFC) and brake thermal efficiency (BTE) was observed with the use of oxygenates blended with ULSD. All five oxygenates were found to be effective at reducing particulate mass emissions at medium and high engine loads, with butanol being the most effective and DGM being the least effective. Analysis of the relative contribution of changes in the OC and EC emissions to the reduction of particulate matter indicated that under the same oxygen content, EC made a dominant contribution to the reduction of particulate mass. The results also indicated that reduction in both particle mass and number emissions was affected not only by the oxygen content, but also by the chemical structure and thermophysical properties of oxygenates as well as engine operating conditions.

Zhi-Hui Zhang; Rajasekhar Balasubramanian

2015-01-01T23:59:59.000Z

435

Comparative Study of Performance and Combustion Characteristics of Conventional and Low Heat Rejection (Mullite Coated) Diesel Engines  

Science Journals Connector (OSTI)

Tests were performed on a single cylinder, four stroke, direct injection, diesel engine whose piston crown, cylinder head and valves were coated with a 0.5 mm thickness of 3Al2O32SiO2 (mullite) (Al2O3 = 60%, SiO2 = 40%) over a 150 ?m thickness of NiCrAlY bond coat. The working conditions for the conventional engine (without coating) and LHR (mullite coated) engine were kept exactly same to ensure a comparison between the two configurations of the engine. This paper is intended to emphasis on performance and combustion characteristics of conventional and LHR (Mullite coated) diesel engines under identical conditions. Tests were carried out at same operational constraints i.e. air-fuel ratio and engine speed conditions for both conventional engine (without coating) and LHR (mullite coated) engines. The results showed that, there was as much as 1.8 % increasing on brake power for LHR (mullite coated) engine compared to conventional engine (without coating) at full load The average decrease in brake specific fuel consumption in the LHR engine compared with the conventional engine was 1.76 % for full engine load. However, there was increasing on cylinder gas pressure and net heat release rate for LHR engine compared to conventional engine. Also the results revealed that, there was as much as 22% increasing on exhaust gas temperature for LHR engine compared to conventional engine at full engine load.

S B Patond; S A Chaple; P N Shrirao; P I Shaikh

2013-01-01T23:59:59.000Z

436

Application of semi-direct injection for spark-ignition engine  

Science Journals Connector (OSTI)

This paper proposes an application of a motorcycle engine lean-burn system for improving engine efficiency and reducing exhaust emissions. This Semi-Direct Injection (SDI) system consists of a high swirl charge, injection during intake-valve opening, and air-assisted fuel injection. The fuel enters the cylinder directly through the intake valve near the middle intake stroke for a richer mixture around the spark plug. A 125 cc, 4-valve, Port-Fuel-Injection (PFI) engine was retrofitted by designing a control plate to enhance the swirl. The swirl ratio was increased to 3.8 and the lean limit was extended to 1.7 of lambda (excess air ratio). The engine was tested at the low-load region, which includes most operation points of the ECE-40 driving cycle. A complete engine performance map was conducted for comparison between SDI and original PFI engines. The results show that Brake-Specific Fuel Consumption (BSFC) decreased by 11.3%. Brake-specific exhaust emissions of NOx and CO decreased by 32.0% and 92.9%, respectively. The HC emission increased by 47.7%.

Yuh-Yih Wu; Bo-Chiuan Chen; Anh-Trung Tran

2010-01-01T23:59:59.000Z

437

Properties and performance of cotton seed oildiesel blends as a fuel for compression ignition engines  

Science Journals Connector (OSTI)

This paper presents the evaluation of properties of straight vegetable cotton seed oil (CSO) and its blends with diesel fuel in various proportions to evaluate the performance and emission characteristics of a single cylinder compression ignition (CI) engine at constant speed of 1500 rev ? min . Diesel and CSO oil fuel blends (10% 30% 50% and 70%) were used to conduct engine performance and smoke emission tests at varying loads of 0% 20% 40% 60% 80% and 100% of full load in addition to their straight CSO and diesel fuel. The performance parameters of brake specific energy consumption (BSFC) brake thermal efficiency (BTE) mechanical efficiency (ME) exhaust gas temperature (EGT) and exhaust emission (smoke) were evaluated to find the optimum CSO and diesel fuel blend. From the experimental results the CSO10D90 blend fuel showed 3.7% reduction in BSFC 1.7% increase in BTE 6.7% increase in ME and 21.7% reduction in the smoke emissions in comparison with conventional diesel operated engine. Finally it is concluded that CSO10D90 can be used straight away in CI engines without any major modifications to the engine as it showed good performance and improved emission compared to all other fuels tested for the entire range of engine operation in comparison with diesel.

B. Murali Krishna; J. M. Mallikarjuna

2009-01-01T23:59:59.000Z

438

Effects of the blends containing low ratios of alternative fuels on the performance and emission characteristics of a diesel engine  

Science Journals Connector (OSTI)

The aim of this study is to experimentally investigate the effects of blends containing various alternative fuels and diesel fuel on the performance and emissions of a diesel engine. The considered parameters are brake power, specific fuel consumption and thermal efficiency as well as carbon monoxide, hydrocarbon and nitrogen oxide emissions. Blends of biodiesel, ethanol, methanol and vegetable oil with diesel fuel, each containing 15% alternative fuel in volume, were prepared. Then, these blends were tested in a naturally aspirated, direct injection diesel engine. The test results obtained with these blends were compared with those obtained with diesel fuel. It was found that the tested blends yielded usually different performance and emission characteristics compared to diesel fuel. The biodiesel blend resulted in performance parameters very close to those obtained in the use of diesel fuel. Ethanol and methanol blends yielded lower brake power, while they resulted in higher specific fuel consumption and lower carbon monoxide emissions. On the other hand, the vegetable oil blend yielded lower carbon monoxide emissions, while it caused only slight changes in the performance parameters.

Murat Karabektas; Gokhan Ergen; Murat Hosoz

2013-01-01T23:59:59.000Z

439

Studies on dual fuel engine performance and exhaust emission analysis by response surface methodology  

Science Journals Connector (OSTI)

In this present study a five factor three level Box-Behnken response surface design was used to study the effect of five independent variables such as diesel (40%100%) ethanol (0%-30%) pongamia oil methyl ester (POME) (0%30%) compressed natural gas (CNG) (0%20%) and load of the engine (0%100%) on the performance (brake thermal efficiency brake specific fuel consumption and exhaust gas temperature) and emission characteristics (carbon mono-oxide (CO) carbon dioxides (CO2) unburnt hydrocarbon oxides of nitrogen (NOX) and smoke) of a single cylinder four stroke water cooled diesel engine converted to dual fuel system. It was operated with either diesel fuel or blend with CNG using an electronically controlled solenoid actuated valve mechanism. The experimental results showed that all the process variables have significant effect on the engine performance. The emission characteristics (CO CO2 NOX and Smoke) were significantly lower than the diesel fuel emissions. From the experimental results second order polynomial models were developed to predict the response variables. The optimal conditions were determined and it was found to be: Diesel 70% Ethanol 15% POME 15% CNG 10% and load 50% respectively with a desirability value of 0.894.

R. Senthilraja; V. Sivakumar; J. Prakash Maran

2014-01-01T23:59:59.000Z

440

Comparison of propane and methane performance and emissions in a turbocharged direct injection dual fuel engine  

SciTech Connect

With increasingly restrictive NO x and particulate matter emissions standards, the recent discovery of new natural gas reserves, and the possibility of producing propane efficiently from biomass sources, dual fueling strategies have become more attractive. This paper presents experimental results from dual fuel operation of a four-cylinder turbocharged direct injection (DI) diesel engine with propane or methane (a natural gas surrogate) as the primary fuel and diesel as the ignition source. Experiments were performed with the stock engine control unit at a constant speed of 1800 rpm, and a wide range of brake mean effective pressures (BMEPs) (2.7-11.6 bars) and percent energy substitutions (PESs) of C 3 H 8 and CH 4. Brake thermal efficiencies (BTEs) and emissions (NO x, smoke, total hydrocarbons (THCs), CO, and CO 2) were measured. Maximum PES levels of about 80-95% with CH 4 and 40-92% with C 3 H 8 were achieved. Maximum PES was limited by poor combustion efficiencies and engine misfire at low loads for both C 3 H 8 and CH 4, and the onset of knock above 9 bar BMEP for C 3 H 8. While dual fuel BTEs were lower than straight diesel BTEs at low loads, they approached diesel BTE values at high loads. For dual fuel operation, NO x and smoke reductions (from diesel values) were as high as 66-68% and 97%, respectively, but CO and THC emissions were significantly higher with increasing PES at all engine loads

Gibson, C. M.; Polk, A. C.; Shoemaker, N. T.; Srinivasan, K. K.; Krishnan, S. R.

2011-04-20T23:59:59.000Z

Note: This page contains sample records for the topic "brakes regenerative braking" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

Understanding white dwarf binary evolution with white dwarf/main sequence binaries: first results from SEGUE  

E-Print Network (OSTI)

Close white dwarf binaries make up a wide variety of objects such as double white dwarf binaries, which are possible SN Ia progenitors, cataclysmic variables, super soft sources, or AM CVn stars. The evolution and formation of close white dwarf binaries crucially depends on the rate at which angular momentum is extracted from the binary orbit. The two most important sources of angular momentum loss are the common envelope phase and magnetic braking. Both processes are so far poorly understood. Observational population studies of white dwarf/main sequence binaries provide the potential to significantly progress with this situation and to clearly constrain magnetic braking and the CE-phase. However, the current population of white dwarf/main sequence binaries is highly incomplete and heavily biased towards young systems containing hot white dwarfs. The SDSSII/SEGUE collaboration awarded us with 5 fibers per plate pair in order to fill this gap and to identify the required unbiased sample of old white dwarf/main sequence binaries. The success rate of our selection criteria exceeds 65% and during the first 10 months we have identified 41 new systems, most of them belonging to the missed old population.

M. R. Schreiber; A. Nebot Gomez-Moran; A. D. Schwope

2006-11-15T23:59:59.000Z

442

Experimental investigation of regulated and unregulated emissions from a diesel engine fueled with ultralow-sulfur diesel fuel blended with ethanol and dodecanol  

Science Journals Connector (OSTI)

Experiments were conducted on a four-cylinder direct-injection diesel engine using ultralow-sulfur diesel as the main fuel, ethanol as the oxygenate additive and dodecanol as the solvent, to investigate the regulated and unregulated emissions of the engine under five engine loads at an engine speed of 1800revmin?1. Blended fuels containing 6.1%, 12.2%, 18.2% and 24.2% by volume of ethanol, corresponding to 2%, 4%, 6% and 8% by mass of oxygen in the blended fuel, were used. The results indicate that with an increase in ethanol in the fuel, the brake specific fuel consumption becomes higher while there is little change in the brake thermal efficiency. Regarding the regulated emissions, HC and CO increase significantly at low engine load but might decrease at high engine load, \\{NOx\\} emission slightly decreases at low engine load but slightly increases at high engine load, while particulate mass decreases significantly at high engine load. For the unregulated gaseous emissions, unburned ethanol and acetaldehyde increase but formaldehyde, ethene, ethyne, 1,3-butadiene and BTX (benzene, toluene and xylene) in general decrease, especially at high engine load. A diesel oxidation catalyst (DOC) is found to reduce significantly most of the pollutants, including the air toxics.

C.S. Cheung; Yage Di; Zuohua Huang

2008-01-01T23:59:59.000Z

443

Pulsar wind model for the spin-down behavior of intermittent pulsars  

E-Print Network (OSTI)

It is observed that intermittent pulsars have higher slow down rate in the on state (radio-loud) than in the off state (radio-quiet). This gives the evidence that particle wind may play an important role in pulsar spindown. The effect of particle acceleration is included in modeling the rotational energy loss rate. Applying the pulsar wind model to the three intermittent pulsars (PSR B1931+24, PSR J1841-0500, and PSR J1832+0029), we calculate their magnetic field and inclination angle simultaneously. The braking index of intermittent pulsars is also predicted. The duty cycle of particle wind determined from timing observations is consistent with the duty cycle of the on state. It is shown that the particle number density may always be the Goldreich-Julian density. This may ensure that different on states of intermittent pulsars are stable. Observations on the inclination angle and braking index of intermittent pulsars may help to test different models of particle acceleration, as well as different models of p...

Li, L; Yan, W M; Yuan, J P; Xu, R X; Wang, N

2013-01-01T23:59:59.000Z

444

Reactivity Controlled Compression Ignition (RCCI) Combustion on a Multi-Cylinder Light-Duty Diesel Engine  

SciTech Connect

Reactivity controlled compression ignition is a low-temperature combustion technique that has been shown, both in computational fluid dynamics modeling and single-cylinder experiments, to obtain diesel-like efficiency or better with ultra-low nitrogen oxide and soot emissions, while operating primarily on gasoline-like fuels. This paper investigates reactivity controlled compression ignition operation on a four-cylinder light-duty diesel engine with production-viable hardware using conventional gasoline and diesel fuel. Experimental results are presented over a wide speed and load range using a systematic approach for achieving successful steady-state reactivity controlled compression ignition combustion. The results demonstrated diesel-like efficiency or better over the operating range explored with low engine-out nitrogen oxide and soot emissions. A peak brake thermal efficiency of 39.0% was demonstrated for 2600 r/min and 6.9 bar brake mean effective pressure with nitrogen oxide emissions reduced by an order of magnitude compared to conventional diesel combustion operation. Reactivity controlled compression ignition emissions and efficiency results are compared to conventional diesel combustion operation on the same engine.

Curran, Scott [ORNL; Hanson, Reed M [ORNL; Wagner, Robert M [ORNL

2012-01-01T23:59:59.000Z

445

Full Hybrid: Passing  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

highlighted Braking button Stopped button highlighted Braking button Stopped button PASSING PART 1 During heavy accelerating or when additional power is needed, the gasoline engine and electric motor are both used to propel the vehicle. Go to next… stage graphic: vertical blue rule Main stage: See through car with battery, engine, generator, power split device, and electric motor visible while passing another vehicle. There are purple arrows flowing from the generator to the electric motor to the power split device to the front wheels. There are red arrows flowing from the gasoline engine to the generator to the power split device to the front wheels. Main stage: See through car with battery, engine, generator, power split device, and electric motor visible while passing another vehicle. There are purple arrows flowing from the generator to the electric motor to the power split device to the front wheels. There are red arrows flowing from the gasoline engine to the generator to the power split device to the front wheels.

446

Research and Development of High-Power and High-Energy Electrochemical Storage Devices  

SciTech Connect

The accomplishments and technology progressmade during the U.S. Department of Energy (DOE) Cooperative Agreement No. DE-FC26- 05NT42403 (duration: July 11, 2005 through April 30, 2014, funded for $125 million in cost- shared research) are summarized in this Final Technical Report for a total of thirty-seven (37) collaborative programs organized by the United States Advanced Battery Consortium, LLC (USABC). The USABC is a partnership, formed in 1991, between the three U.S. domestic automakers Chrysler, Ford, and General Motors, to sponsor development of advanced high-performance batteries for electric and hybrid electric vehicle applications. The USABC provides a unique opportunity for developers to leverage their resources in combination with those of the automotive industry and the Federal government. This type of pre-competitive cooperation minimizes duplication of effort and risk of failure, and maximizes the benefits to the public of the government funds. A major goal of this program is to promote advanced battery development that can lead to commercialization within the domestic, and as appropriate, the foreign battery industry. A further goal of this program is to maintain a consortium that engages the battery manufacturers with the automobile manufacturers and other key stakeholders, universities, the National Laboratories, and manufacturers and developers that supply critical materials and components to the battery industry. Typically, the USABC defines and establishes consensus goals, conducts pre-competitive, vehicle-related research and development (R&D) in advanced battery technology. The R&D carried out by the USABC is an integral part of the DOEs effort to develop advanced transportation technologies that will significantly improve fuel economy, comply with projected emissions and safety regulations, and use domestically produced fuels. The USABC advanced battery development plan has the following three focus areas: 1. Existing technology validation, implementation, and cost reduction. 2. Identification of the next viable technology with emphasis on the potential to meet USABC cost and operating temperature range goals. 3. Support high-risk, high-reward battery technology R&D. Specific to the Cooperative Agreement DE- FC26-05NT42403, addressing High-Energy and High Power Energy Storage Technologies, the USABC focus was on understanding and addressing the following factors (listed in priority of effort): Cost: Reducing the current cost of lithium- ion batteries (currently about 2-3 times the FreedomCAR target ($20/kW). Low Temperature Performance: Improving the discharge power and removing lithium plating during regenerative braking. Calendar Life: Achieving 15-year life and getting accurate life prediction. Abuse Tolerance: Developing a system level tolerance to overcharge, crush, and high temperature exposure. This Final Technical Report compilation is submitted in fulfillment of the subject Cooperative Agreement, and is intended to serve as a ready-reference for the outcomes of following eight categories of projects conducted by the USABC under award from the DOEs Energy Efficiency and Renewable Energy ) Vehicle Technologies Program: USABC DoE Final Report DoE Cooperative Agreement DE-FC26-95EE50425 8 Protected Information 1. Electric Vehicle (EV) (Section A of this report) 2. Hybrid Electric Vehicle (HEV) (Section B 3. Plug-In Hybrid Electric Vehicle (PHEV) (Section C) 4. Low-Energy Energy Storage Systems (LEESS) (Section D) 5. Technology Assessment Program (TAP) (Section E) 6. Ultracapacitors (Section F) 7. 12 Volt Start-Stop (Section G) 8. Separators (Section H) The report summarizes the main areas of activity undertaken in collaboration with the supplier community and the National Laboratories. Copies of the individual supplier final reports are available upon request. Using project gap analysis versus defined USABC goals in each area, the report documents known technology limits and provides direction on future areas of technology and performance needs for vehicle applicatio

No, author

2014-04-30T23:59:59.000Z

447

A New Absorption Cycle: The Single-Effect Regenerative Absoprtion Refrigeration Cycle  

E-Print Network (OSTI)

EFFECT o V 1,1, II II I BOILER TEMPERATURE,T B (OF) XBLlR operates with a multistage boiler and a multi- stagerather than in the boiler (or the generator). The greatest

Dao, K.

2011-01-01T23:59:59.000Z

448

Cell-Fusion-Mediated Reprogramming: Pluripotency or Transdifferentiation? Implications for Regenerative Medicine  

Science Journals Connector (OSTI)

Cellcell fusion is a natural process that occurs not ... , in-vitro studies have revealed that after fusion of two different cell types, the developmental potential of these cells can ... can also occur in vivo ...

Daniela Sanges*; Frederic Lluis*; Maria Pia Cosma

2011-01-01T23:59:59.000Z

449

Low-pressure-ratio regenerative exhaust-heated gas turbine. Final report  

SciTech Connect

A design study of coal-burning gas-turbine engines using the exhaust-heated cycle and state-of-the-art components has been completed. In addition, some initial experiments on a type of rotary ceramic-matrix regenerator that would be used to transfer heat from the products of coal combustion in the hot turbine exhaust to the cool compressed air have been conducted. Highly favorable results have been obtained on all aspects on which definite conclusions could be drawn.

Tampe, L.A.; Frenkel, R.G.; Kowalick, D.J.; Nahatis, H.M.; Silverstein, S.M.; Wilson, D.G.

1991-01-01T23:59:59.000Z

450

Generation of ultrashort radiation pulses by injection locking a regenerative free-electron-laser amplifier  

E-Print Network (OSTI)

than a slippage length, with high efficiency. The IRKA configuration can produce such ultra can produce tunable high- power radiation. Another potentially important feature of the FEL is its decades of re- search and development. For example, many scientific appli- cations, such as condensed

Wurtele, Jonathan

451

transmission april may 2003 re-gen56 Privately-owned distributed generation  

E-Print Network (OSTI)

transmission grid to Distributed renewable energy systems, such as mini- hydro, can significantly affect, including mini-hydro. Mini- hydro resources are commonly found in areas with low population and load new techniques that could facilitate a greater capacity of mini- hydro generation. The first allows

Harrison, Gareth

452

Project Profile: Regenerative Carbonate-Based Thermochemical Energy Storage System for Concentrating Solar Power  

Energy.gov (U.S. Department of Energy (DOE))

The Department of Energys SunShot Initiative awarded Southern Research Institute (SRI) through the Concentrating Solar Power: Efficiently Leveraging Equilibrium Mechanisms for Engineering New Thermochemical Storage (CSP: ELEMENTS) funding program.

453

Natural origin biodegradable systems in tissue engineering and regenerative medicine: present status and some moving trends  

Science Journals Connector (OSTI)

...Teoh, and D.W Hutmacher2002Scaffold development using 3D printing with a starch-based polymer. Mater. Sci. Eng. C...tissue-engineering applications: 3D bioplotting versus 3D printing. J. Polym. Sci. Part A Polym. Chem. 42, 624-638...

2007-01-01T23:59:59.000Z

454

ENSC 461 PROJECT: Development of a new hydraulic regenerative energy storage system  

E-Print Network (OSTI)

pressurized gas, typically nitrogen. In the regeneration mode, the compressed gas pushes the hydraulic fluid back into the low-pressure tank and generates electricity through the hydraulic pump/motor. The HRS in the acceleration mode. Following the recent increase in oil prices, the HRS technology has received considerable

Bahrami, Majid

455

Carbon deposition characteristics and regenerative ability of oxygen carrier particles for chemical-looping combustion  

Science Journals Connector (OSTI)

For gaseous fuel combustion with inherent CO2 capture and low NOx emission, chemical-looping combustion (CLC) may yield great advantages for...2...separation and suppressing the effect on the environment. In a chemical

Ho-Jung Ryu; Nam-Yun Lim; Dal-Hee Bae

2003-01-01T23:59:59.000Z

456

Method and apparatus for suppressing regenerative instability and related chatter in machine tools  

DOE Patents (OSTI)

Methods of and apparatuses for mitigating chatter vibrations in machine tools or components thereof. Chatter therein is suppressed by periodically or continuously varying the stiffness of the cutting tool (or some component of the cutting tool), and hence the resonant frequency of the cutting tool (or some component thereof). The varying of resonant frequency of the cutting tool can be accomplished by modulating the stiffness of the cutting tool, the cutting tool holder, or any other component of the support for the cutting tool. By periodically altering the impedance of the cutting tool assembly, chatter is mitigated. In one embodiment, a cyclic electric (or magnetic) field is applied to the spindle quill which contains an electro-rheological (or magneto-rheological) fluid. The variable yield stress in the fluid affects the coupling of the spindle to the machine tool structure, changing the natural frequency of oscillation. Altering the modal characteristics in this fashion disrupts the modulation of current tool vibrations with previous tool vibrations recorded on the workpiece surface.

Segalman, Daniel J. (Albuquerque, NM); Redmond, James M. (Albuquerque, NM)

2001-01-01T23:59:59.000Z

457

Method and apparatus for suppressing regenerative instability and related chatter in machine tools  

DOE Patents (OSTI)

Methods of and apparatuses for mitigating chatter vibrations in machine tools or components thereof. Chatter therein is suppressed by periodically or continuously varying the stiffness of the cutting tool (or some component of the cutting tool), and hence the resonant frequency of the cutting tool (or some component thereof). The varying of resonant frequency of the cutting tool can be accomplished by modulating the stiffness of the cutting tool, the cutting tool holder, or any other component of the support for the cutting tool. By periodically altering the impedance of the cutting tool assembly, chatter is mitigated. In one embodiment, a cyclic electric (or magnetic) field is applied to the spindle quill which contains an electro-rheological (or magneto-rheological) fluid. The variable yield stress in the fluid affects the coupling of the spindle to the machine tool structure, changing the natural frequency of oscillation. Altering the modal characteristics in this fashion disrupts the modulation of current tool vibrations with previous tool vibrations recorded on the workpiece surface.

Segalman, Daniel J. (Albuquerque, NM); Redmond, James M. (Albuquerque, NM)

1999-01-01T23:59:59.000Z

458

A New Absorption Cycle: The Single-Effect Regenerative Absoprtion Refrigeration Cycle  

E-Print Network (OSTI)

1'il . II HO , 1I6' il l ~CNC . ENT"' AL PV O! ; 1. S0 IOl .i7S11 ,]7b8 .4I! (I] ~CNC, ENTtCNC, MASS I'LOIol . ? 1I}8 ,~

Dao, K.

2011-01-01T23:59:59.000Z

459

Dollars for Genes: Revenue Generation by the California Institute for Regenerative Medicine  

E-Print Network (OSTI)

if it had negotiated a royalty license with Google. Google71 also promised large royalty income from the licensing ofmillion to $1.1 billion in royalties from research funded by

Gilbert, Richard J

2006-01-01T23:59:59.000Z

460

An analysis of the regenerative expansion cycle in multi-component hydrocarbon separation systems  

E-Print Network (OSTI)

of information on this type of process was found in the literature. It was, therefore, necessary to work out a suitable cycle, make a prototype design, and field test the completed unit. The prototype verified the predicted theory. However, its performance... with water vapor and contains significant quantities of hydrocarbon fractions heavier than ethane, These heavier ends are valuable as liquid products. They also increase the heating value of the gas to a level not needed in most reciprocating engines...

Horton, John Leroy

1966-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "brakes regenerative braking" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

Performance evaluation of an active filter non-regenerative AC drive  

E-Print Network (OSTI)

drive system with load is then modeled and the results verified using the Simulink simulation package. It is shown that the proposed topology has several distinct advantages over a traditional diode rectifier such as improved total harmonic distortion...

Skorcz, Alex Joseph

2009-05-15T23:59:59.000Z

462

Performance evaluation of an active filter non-regenerative AC drive  

E-Print Network (OSTI)

drive system with load is then modeled and the results verified using the Simulink simulation package. It is shown that the proposed topology has several distinct advantages over a traditional diode rectifier such as improved total harmonic distortion...

Skorcz, Alex Joseph

2008-10-10T23:59:59.000Z

463

Carbon Capture by a Continuous, Regenerative Ammonia-Based Scrubbing Process  

SciTech Connect

Overview: To develop a knowledge/data base to determine whether an ammonia-based scrubbing process is a viable regenerable-capture technique that can simultaneously remove carbon dioxide, sulfur dioxide, nitric oxides, and trace pollutants from flue gas.

Resnik, K.P.; Yeh, J.T.; Pennline, H.W.

2006-10-01T23:59:59.000Z

464

Expression of FGF2 in the limb blastema of two Salamandridae correlates with their regenerative capability  

Science Journals Connector (OSTI)

...blastemas but is not detectable in the AEC (Poulin et al. 1993). Two FGFR-2 variants...variants are present in the mesen- chyme (Poulin & Chiu 1995). We have analysed the limb...M., Wei, T. Y., Nace, J. D., Poulin, M. L., Chiu, I. M., Lang, J...

2003-01-01T23:59:59.000Z

465

Regenerative zinc/air and zinc/ferricyanide batteries for stationary power applications  

SciTech Connect

The authors report a novel configuration for a zinc-particle, packed-bed anode in which an open structure of high hydraulic permeability is maintained indefinitely in a cell with closely spaced walls by the formation of particle bridges and associated gaps. The configuration minimizes electrolyte pumping costs, allows rapid refueling and partial recharge, and provides for 100% zinc consumption. This approach benefits zinc/air fuel batteries by allowing nearly continuous operation and fuel recycle without commercial infrastructure; it benefits Zn/[Fe(CN){sub 6}]{sup {minus}3} batteries by eliminating shape-change and polarization problems found with planar anodes.

Cooper, J.F.; Keene, L.E.; Noring, J.; Maimoni, A.; Peterman, K.

1994-05-01T23:59:59.000Z

466

A Bi-Mix Antibacterial Drug-Delivery System for Regenerative Endodontics. Jadesada Palasuk1  

E-Print Network (OSTI)

), Kruskal-Wallis and Mann-Whitney tests were performed (=0.05). The results showed that uniaxial tensile

Zhou, Yaoqi

467

Treatment of \\{VOCs\\} with molecular sieve catalysts in regenerative catalytic oxidizer  

Science Journals Connector (OSTI)

This work prepares molecular sieve catalysts with various metal species and various metal weight loadings by impregnation, and then screens them in a catalytic combustion system. The current study further investigates the molecular sieve catalyst in an RCO system after it performed well in combustion efficiency. This work tests its performances in terms of CO2 yield, pressure drop, the difference between temperatures of the inlet and outlet gases (Td), and thermal recovery efficiency (TRE), with various operational conditions. Experimental results demonstrate that the 10wt% Cu/(MS) catalyst was the most active because it has the greatest combustion efficiency to treat volatile organic compounds (VOCs) than Co/(MS) catalysts and Mn/(MS) catalysts. The 10wt% Cu/(MS) catalyst used in an RCO system reaches over 95% CO2 yields under the heating zone temperature (Tset)=400C, gas velocity (Ug)=0.37m/s, isopropyl alcohol (IPA) concentration=200400ppm conditions. Moreover, the RCO system performed well in economic efficiency with the RCO with in terms of TRE, Td and pressure drop. The TRE ranged from 90.4% to 94.6% and Td ranged from 14.0 to 34.2C under various conditions at Tset=300450C. Finally, the results of the stability test demonstrated that the catalyst was very stable at various Ug values and various Tset values.

Shih-Wei Huang; Jie-Chung Lou; Yung-Chang Lin

2010-01-01T23:59:59.000Z

468

Processing and characterization of multi-cellular monolithic bioceramics for bone regenerative scaffolds  

Science Journals Connector (OSTI)

Multicellular monolithic ceramic body is a ceramic material which has many gas or liquid passages partitioned by thin walls throughout the bulk material. There are many currently known advanced industrial applications of multicellular ceramics structures i.e. as supports for various catalysts electrode support structure for solid oxide fuel cells refractories electric/electronic materials aerospace vehicle re-entry heat shields and biomaterials for dental as well as orthopaedic implants by naming only a few. Multicellular ceramic bodies are usually made of ceramic phases such as mullite cordierite aluminum titanate or pure oxides such as silica zirconia and alumina. What make alumina ceramics is excellent for the above functions are the intrinsic properties of alumina which are hard wear resistant excellent dielectric properties resists strong acid and alkali attacks at elevated temperatures good thermal conductivities high strength and stiffness as well as biocompatible. In this work the processing technology leading to truly multicellular monolithic alumina ceramic bodies and their characterization are reported. Ceramic slip with 66 wt.% solid loading was found to be optimum as impregnant to the polyurethane foam template. Mullitic ceramic composite of alumina-sodium alumino disilicate-Leucite-like phases with bulk and true densities of 0.852 and 1.241 g cm?3 respectively pore linear density of 35 cm?1 linear and bulk volume shrinkages of 7-16% and 32 vol.% were obtained. The compressive strength and elastic modulus of the bioceramics are ?0.5-1.0 and ?20 MPa respectively.

2014-01-01T23:59:59.000Z

469

Radio frequency regenerative oscillations in monolithic high-Q/V heterostructured photonic crystal cavities  

E-Print Network (OSTI)

of the radio frequency tones by laser-cavity detuning and laser power levels, confirmed by the CMT simulations crystal cavity is removed by buffered oxide wet etching. Inverse tapered couplers with an oxide over-cladding the CW coherent transverse-electric light from a tunable laser onto chip through polarization control

Hone, James

470

A study of the effect of variable speed machining on regenerative chatter in end milling  

E-Print Network (OSTI)

production rates. Therefore it is extremely important to avoid and suppress chatter in metal cutting processes. 1. 2. PREVIOUS RESEARCH Chatter has been well investigated by numerous researchers including Tobias (1958), Tlusty (1963), Merritt (1968...), Tlusty (1983), Fu (1984), and others used this method. This uneven insert spacing induces a phase change between subsequent cuts and therefore decreasing the resonance effect that leads to high amplitude chatter. However the major drawback of such a...

Dhayalan, Arun Kumar

2000-01-01T23:59:59.000Z

471

Fibrin matrix for suspension of regenerative cells in an artificial nerve conduit  

Science Journals Connector (OSTI)

Summary Peripheral nerve injury presents with specific problems of neuronal reconstructions, and from a clinical viewpoint a tissue engineering approach would facilitate the process of repair and regeneration. We have previously used artificial nerve conduits made from bioresorbable poly-3-hydroxybutyrate (PHB) in order to refine the ways in which peripheral nerves are repaired and reconnected to the target muscles and skin. The addition of Schwann cells (SC) or differentiated mesenchymal stem cells (dMSC) to the conduits enhances regeneration. In this study, we have used a matrix based on fibrin (Tisseel) to fill optimally the nerve-conduits with cells. In vitro analysis showed that both SC and MSC adhered significantly better to PHB in the presence of fibrin and cells continued to maintain their differentiated state. Cells were more optimally distributed throughout the conduit when seeded in fibrin than by delivery in growth medium alone. Transplantation of the nerve conduits in vivo showed that cells in combination with fibrin matrix significantly increased nerve regeneration distance (using PGP9.5 and S100 distal and proximal immunohistochemistry) when compared with empty PHB conduits. This study shows the beneficial combinatory effect of an optimised matrix, cells and conduit material as a step towards bridging nerve gaps which should ultimately lead to improved functional recovery following nerve injury.

D.F. Kalbermatten; P.J. Kingham; D. Mahay; C. Mantovani; J. Pettersson; W. Raffoul; H. Balcin; G. Pierer; G. Terenghi

2008-01-01T23:59:59.000Z

472

Trade-off Analysis of Regenerative Power Source for Long Duration Loitering Airship  

E-Print Network (OSTI)

: photovoltaic flat panels, thin film photovoltaic panels, trough solar concentrators, Stirling dish solar by their excessive drag. Flat solar technologies (i.e. thin film, LSC, and flat panel PV) are ranked the highest, the airship needs a reliable, low-weight, renewable power generation system. This analysis is focused on solar

473

Global energy consumption due to friction in passenger cars  

Science Journals Connector (OSTI)

This study presents calculations on the global fuel energy consumption used to overcome friction in passenger cars in terms of friction in the engine, transmission, tires, and brakes. Friction in tribocontacts was estimated according to prevailing contact mechanisms such as elastohydrodynamic, hydrodynamic, mixed, and boundary lubrication. Coefficients of friction in the tribocontacts were estimated based on available information in the literature on the average passenger car in use today, a car with todays advanced commercial tribological technology, a car with todays best advanced technology based upon recent research and development, and a car with the best technology forecasted in the next 10 years. The following conclusions were reached: In passenger cars, one-third of the fuel energy is used to overcome friction in the engine, transmission, tires, and brakes. The direct frictional losses, with braking friction excluded, are 28% of the fuel energy. In total, 21.5% of the fuel energy is used to move the car. Worldwide, 208,000 million liters of fuel (gasoline and diesel) was used in 2009 to overcome friction in passenger cars. This equals 360 million tonne oil equivalent per year (Mtoe/a) or 7.3millionTJ/a. Reductions in frictional losses will lead to a threefold improvement in fuel economy as it will reduce both the exhaust and cooling losses also at the same ratio. Globally, one passenger car uses on average of 340l of fuel per year to overcome friction, which would cost 510 euros according to the average European gas price in 2011 and corresponds to an average driving distance of 13,000km/a. By taking advantage of new technology for friction reduction in passenger cars, friction losses could be reduced by 18% in the short term (510 years) and by 61% in the long term (1525 years). This would equal worldwide economic savings of 174,000 million euros and 576,000 million euros, respectively; fuel savings of 117,000 million and 385,000 million liters, respectively; and CO2 emission reduction of 290 million and 960 million tonnes, respectively. The friction-related energy losses in an electric car are estimated to be only about half those of an internal combustion passenger car. Potential actions to reduce friction in passenger cars include the use of advanced coatings and surface texturing technology on engine and transmission components, new low-viscosity and low-shear lubricants and additives, and tire designs that reduce rolling friction.

Kenneth Holmberg; Peter Andersson; Ali Erdemir

2012-01-01T23:59:59.000Z

474

Fumigation of a heavy duty common rail marine diesel engine with ethanolwater mixtures  

Science Journals Connector (OSTI)

A heavy duty common rail marine diesel engine operating with two stage injection is tested under load on a test bench with vapourised ethanolwater mixtures mixed into the inlet air at various rates. Ethanol/water mixture strengths of 93%, 72% and 45% by mass are tested. Results are presented for two engine loads at 1800rpm, with brake mean effective pressure (BMEP) 17bar and 20bar. At each test point, constant engine speed and brake torque are maintained for various rates of aqueous ethanol addition. Small increases in brake thermal efficiency are measured with moderate rates of ethanol addition at a BMEP of 20bar. Exhaust emissions of oxides of nitrogen, carbon monoxide, hydrocarbons, oxygen and carbon dioxide, and exhaust opacity are measured. CO emissions and exhaust opacity tend to increase with increased ethanol addition. \\{NOx\\} emissions tend to decrease with increased ethanol addition and with increased water content. Hydrocarbon emissions remain low, near the detection limit of the analyser. Cylinder pressure and the electronically controlled two stage liquid fuel injection timing are recorded with a high speed data acquisition system. Apparent heat release rate is calculated from the measured cylinder pressure. The apparent heat release rate and fuel injection timing together allow analysis of the mechanism of the combustion process with ethanol fumigation. Two stage injection involves a small pre-injection of diesel fuel to reduce early pressure rise rates in normal diesel engine combustion. Even though injection timing is retarded by the Engine Control Unit as more ethanol is added, combustion timing effectively advances due to the effect of two stage injection. Where the ethanol/air mixture strength is above the lower flammability limit at compression temperatures, the mixture is ignited by the pre-injection and begins to burn rapidly by flame propagation and/or autoignitive propagation before the main liquid fuel injection begins. This occurs for ethanol energy substitution rates greater than 30%. Two distinct peaks in heat release rate appear at the higher ethanol rates. Severe knock becomes apparent for 34% ethanol. Two stage injection may be disadvantageous in these circumstances.

L. Goldsworthy

2013-01-01T23:59:59.000Z

475

Clean Energy Technologies: A Preliminary Inventory of the Potential for Electricity Generation  

E-Print Network (OSTI)

generally regenerative thermal oxidizers (RTO) are used. Insystem compared to a regenerative thermal oxidizer (RTO) VOC

Bailey, Owen; Worrell, Ernst

2005-01-01T23:59:59.000Z

476

Radiation Safety  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Brotherhood of Locomotive Brotherhood of Locomotive Engineers & Trainmen Scott Palmer BLET Radiation Safety Officer New Hire Training New Hire study topics * GCOR * ABTH * SSI * Employee Safety * HazMat * Railroad terminology * OJT * 15-week class * Final test Hazardous Materials * Initial new-hire training * Required by OSHA * No specified class length * Open book test * Triennial module Locomotive Engineer Training A little bit older...a little bit wiser... * Typically 2-4 years' seniority * Pass-or-get-fired promotion * Intensive program * Perpetually tested to a higher standard * 20 Weeks of training * 15 of that is OJT * General Code of Operating Rules * Air Brake & Train Handling * System Special Instructions * Safety Instructions * Federal Regulations * Locomotive Simulators * Test Ride * Pass test with 90% Engineer Recertification

477

Comparison of Standard 90.1-07 and the 2009 IECC with Respect to Commercial Buildings  

NLE Websites -- All DOE Office Websites (Extended Search)

9054 9054 Comparison of Standard 90.1-07 and the 2009 IECC with Respect to Commercial Buildings December 11, 2009 Prepared for the U.S. Department of Energy under Contract DE-AC05-76RL01830 Pacific Northwest National Laboratory Richland, Washington 99352 iii Acronyms and Abbreviations AMCA Air Movement and Control Association ANSI American National Standards Institute ASHRAE American Society of Heating, Refrigerating and Air-Conditioning Engineers ASTM American Society for Testing and Materials BECP Building Energy Codes Program bhp brake horsepower DCV demand control ventilation DDC Direct Digital Control (Systems) DOE U.S. Department of Energy EPACT Federal Energy Policy Act of 1992 hp horsepower HSPF Heating Seasonal Performance Factor

478

14Fermi 4/16/99  

NLE Websites -- All DOE Office Websites (Extended Search)

Rate Rate U.S. Postage P A I D Bartlett, IL Permit No. 146 CLASSIFIEDS FOR SALE s Õ87 Bonneville, orig 72K miles, loaded, moonroof, leather, good condition, needs some body work. $1,500. Carolyn Hines, x3788 or chines@fnal.gov. s Õ84 Toyota Camry, auto, 4 dr sedan, 116K miles, $700 obo. Call Colleen, x8887. s Õ71 Volkswagen square back, great collectorÕs car, good tires, brakes & Y2K compliant cooling system. $1,000 obo. Call x4364 or JudyU51@AOL.COM. s 19" Portland color TV remote ready but remote missing $45. US Divers Wet Suit Black $50; Parkway divers vest type buoyancy compensator w/auto-inflate $75. Atomic Arc Carbon Skis (195) w/bindings, ski bag, poles, size 12 boots, $150; king size Oak waterbed frame needs mattress $50; Elvis collector plates (4) $20 ea; 2 old

479

CX-009044: Categorical Exclusion Determination | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

44: Categorical Exclusion Determination 44: Categorical Exclusion Determination CX-009044: Categorical Exclusion Determination Machining and Fabrication in 749-A CX(s) Applied: B3.6 Date: 08/08/2012 Location(s): South Carolina Offices(s): Savannah River Operations Office Hands-on activities covering the operation of lathes, milling machines, grinder, saws, and machines of both manual and Computer Numerical Control type. Also the fabrication of assemblies within the confines of 749-A using brakes, rollers, metal working machines (Piranha-type machines), arbor and hydraulic presses, threading machines, welding machines, and hand power tools of many kinds. CX-009044.pdf More Documents & Publications CX-009045: Categorical Exclusion Determination CX-009611: Categorical Exclusion Determination CX-010120

480

CX-009045: Categorical Exclusion Determination | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

9045: Categorical Exclusion Determination 9045: Categorical Exclusion Determination CX-009045: Categorical Exclusion Determination Machining and Fabrication in 723-A CX(s) Applied: B3.6 Date: 08/08/2012 Location(s): South Carolina Offices(s): Savannah River Operations Office Hands-on activities covering the operation of lathes, milling machines, grinders, saws, and machines of both manual and Computer Numerical Control (CNC) type. Also the fabrication of assemblies within the confines of 723-A using brakes, rollers, metal working machines (Piranha-type machines), arbor and hydraulic presses, threading machines, welding machines, and hand power tools of many kinds. CX-009045.pdf More Documents & Publications CX-009044: Categorical Exclusion Determination CX-009590: Categorical Exclusion Determination

Note: This page contains sample records for the topic "brakes regenerative braking" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


481

Gas-Saving Tips  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Gas-Saving Tips Gas-Saving Tips Some consumers believe fuel economy ratings are a fixed number, like engine size or cargo volume. However, a vehicle's fuel economy can vary significantly due to several factors, including how the vehicle is driven, the vehicle's mechanical condition, and the environment in which it is driven. That's good news. It means you may be able to improve your vehicle's gas mileage through proper maintenance and driving habits. In fact, studies suggest the average driver can improve his/her fuel economy by roughly 10 percent. Here are a few simple tips to help you get the best possible fuel economy from your vehicle and reduce your fuel costs. Adopt Good Driving Habits Drive Sensibly Aggressive driving (speeding, rapid acceleration and braking)

482

Test Drive: Honda FCX Clarity | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Test Drive: Honda FCX Clarity Test Drive: Honda FCX Clarity Test Drive: Honda FCX Clarity May 14, 2010 - 10:52am Addthis A member of the Energy Empowers team takes the Honda FCX Clarity for a drive outside the U.S. Department of Energy in Washington, D.C. | Photo by Sunita Satyapal A member of the Energy Empowers team takes the Honda FCX Clarity for a drive outside the U.S. Department of Energy in Washington, D.C. | Photo by Sunita Satyapal Paul Lester Communications Specialist for the Office of Energy Efficiency and Renewable Energy Stepping into the driver's seat of the hydrogen powered Honda FCX Clarity is like stepping into the future. A glowing blue 3-D dashboard displays hydrogen and battery levels and a power button fires up fuel cells that provide electricity. An advanced braking system warns the driver about

483

Challenge X 2006 Competition Results  

NLE Websites -- All DOE Office Websites (Extended Search)

6: Virginia Tech Takes Top Honors 6: Virginia Tech Takes Top Honors A student team from Virginia Polytechnic Institute and State University won the second-year Challenge X: Crossover to Sustainable Mobility, a three-year engineering competition designed to improve the fuel efficiency and reduce the environmental impact of a 2005 Chevrolet Equinox. The Virginia Tech team developed and built a hybrid version of the Equinox that uses two electric motors and runs on E85, a fuel blend containing 85 percent ethanol and 15 percent gasoline. The Virginia Tech vehicle also exhibited the best braking and handling, the lowest tailpipe emissions, and the lowest petroleum usage. The U.S. Department of Energy (DOE) and General Motors Corporation (GM) are the lead sponsors for Challenge X, in which 17 teams of North American engineering students are participating (see box). Argonne manages the competition every year.

484

Gas Mileage Tips - Driving More Efficiently  

NLE Websites -- All DOE Office Websites (Extended Search)

Driving More Efficiently Driving More Efficiently Personalize Fuel Prices Select the fuel type and enter your fuel price to personalize savings estimates. Regular Midgrade Premium Diesel E85 CNG LPG $ 3.33 /gal Save My Prices Use Default Prices Click "Save My Prices" to apply your prices to other pages, or click "Use Default Prices" use national average prices. Drive Sensibly frustrated driver Aggressive driving (speeding, rapid acceleration and braking) wastes gas. It can lower your gas mileage by 33% at highway speeds and by 5% around town. Sensible driving is also safer for you and others, so you may save more than gas money. Fuel Economy Benefit: 5%-33% Equivalent Gasoline Savings: $0.17-$1.10/gallon Observe the Speed Limit (New Information) Graph showing MPG decreases rapidly at speeds above 50 mph

485

STATEMENT OF CONSIDERATIONS REQUEST BY CATERPILLAR, INC. FOR AN ADVANCE WAIVER OF PATENT  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

5NT42423; W(A)-05-052; CH-1339 5NT42423; W(A)-05-052; CH-1339 As set out in the attached waiver petition and in subsequent discussions with DOE Patent Counsel, Caterpillar, Inc. (Caterpillar) has requested an advance waiver of domestic and foreign patent rights for all subject inventions made under the above subject cooperative agreement. The waiver will apply to inventions made by Caterpillar employees and its subcontractors' employees, regardless of tier, except inventions made by subcontractors eligible to retain title to inventions pursuant to P.L. 96-517, as amended, and National Laboratories. Referring to item 2 of Caterpillar's petition, the purpose of this agreement is to develop a new air management and exhaust energy recovery system that will demonstrate a 10% improvement in thermal efficiency over the base engine (e.g. 40% brake efficiency to 44%) with

486

The Inside of a Wind Turbine | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

The Inside of a Wind Turbine The Inside of a Wind Turbine The Inside of a Wind Turbine 1 of 17 Tower: 2 of 17 Tower: Made from tubular steel (shown here), concrete, or steel lattice. Supports the structure of the turbine. Because wind speed increases with height, taller towers enable turbines to capture more energy and generate more electricity. Generator: 3 of 17 Generator: Produces 60-cycle AC electricity; it is usually an off-the-shelf induction generator. High-speed shaft: 4 of 17 High-speed shaft: Drives the generator. Nacelle: 5 of 17 Nacelle: Sits atop the tower and contains the gear box, low- and high-speed shafts, generator, controller, and brake. Some nacelles are large enough for a helicopter to land on. Wind vane: 6 of 17 Wind vane: Measures wind direction and communicates with the yaw drive to orient the

487

CMVRTC: Current Research  

NLE Websites -- All DOE Office Websites (Extended Search)

Current reseach projects Current reseach projects Wireless Roadside Inspection Field Operational Test (WRI-FOT) Brake Defect Causation and Abatement Study Infrared-Based Screening System Overweight Vehicle Defect Study WRI-fot WRI-FOT roadmap In Fall of 2012, FMCSA kicked offed the WRI-FOT Program to validate technologies and methodologies that can improve safety through inspections using wireless technologies that convey real-time identification of commercial motor vehicles (CMV), drivers, and carriers, as well as information about the status of the vehicles and their drivers. It is believed that these inspections will (1) increase CMV safety, (2) increase inspection efficiency, (3) improve inspection effectiveness by reducing the probability of drivers bypassing CMV inspection stations and

488

[Cover page, Margins: Left 1 in  

NLE Websites -- All DOE Office Websites (Extended Search)

1/479 1/479 Real-Time Dynamic Brake Assessment Proof of Concept Test Final Report 1 November 2011 Prepared by Mary Beth Lascurain Hudson Oscar Franzese Gary Capps DOCUMENT AVAILABILITY Reports produced after January 1, 1996, are generally available free via the U.S. Department of Energy (DOE) Information Bridge. Web site http://www.osti.gov/bridge Reports produced before January 1, 1996, may be purchased by members of the public from the following source. National Technical Information Service 5285 Port Royal Road Springfield, VA 22161 Telephone 703-605-6000 (1-800-553-6847) TDD 703-487-4639 Fax 703-605-6900 E-mail info@ntis.gov Web site http://www.ntis.gov/support/ordernowabout.htm Reports are available to DOE employees, DOE contractors, Energy Technology Data Exchange (ETDE)

489

ETAUTP6R0.PDF  

NLE Websites -- All DOE Office Websites (Extended Search)

6 6 Revision 0 Effective March 23, 2001 Braking Test Prepared by Electric Transportation Applications Prepared by: _______________________________ Date:__________ Steven R. Ryan Approved by: _________________________________________________ Date: _______________ Jude M. Clark Procedure ETA-UTP006 Revision 0 2 ©2001 Electric Transportation Applications All Rights Reserved TABLE OF CONTENTS 1.0 Objectives 3 2.0 Purpose 3 3.0 Documentation 3 4.0 Initial Conditions and Prerequisites 4 5.0 Testing Activity Requirements 6 5.3 Dry Controlled Test 7 5.4 Wet Controlled Test 9 5.5 Wet Panic Test 11 6.0 Glossary 12 7.0 References 14 Appendices Appendix A - Handling Pad Test Data Sheet 15

490

Many Factors Affect MPG  

NLE Websites -- All DOE Office Websites (Extended Search)

Many Factors Affect Fuel Economy Many Factors Affect Fuel Economy How You Drive Vehicle Maintenance Fuel Variations Vehicle Variations Engine Break-In Vehicles in traffic Quick acceleration and heavy braking can reduce fuel economy by up to 33 percent on the highway and 5 percent around town. New EPA tests account for faster acceleration rates, but vigorous driving can still lower MPG. Excessive idling decreases MPG. The EPA city test includes idling, but more idling will lower MPG. Driving at higher speeds increases aerodynamic drag (wind resistance), reducing fuel economy. The new EPA tests account for aerodynamic drag up to highway speeds of 80 mph, but some drivers exceed this speed. Cold weather and frequent short trips can reduce fuel economy, since your engine doesn't operate efficiently until it is warmed up. In colder

491

General requirements. - 1926.451  

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http://www.osha.gov/pls/oshaweb/owadisp.show_document?p_table=STANDARDS&p_id=10752[3/30/2009 4:11:23 PM] dismantling or alteration. Such activities shall be performed only by experienced and trained employees selected for such work by the competent person. ..1926.451(f)(8) 1926.451(f)(8) Employees shall be prohibited from working on scaffolds covered with snow, ice, or other slippery material except as necessary for removal of such materials. 1926.451(f)(9) Where swinging loads are being hoisted onto or near scaffolds such that the loads might contact the scaffold, tag lines or equivalent measures to control the loads shall be used. 1926.451(f)(10) Suspension ropes supporting adjustable suspension scaffolds shall be of a diameter large enough to provide sufficient surface area for the functioning of brake and hoist

492

Vehicle Technologies Office: Parasitic Loss Reduction  

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Parasitic Loss Reduction Parasitic Loss Reduction Heavy vehicles lose a tremendous amount of energy to wind resistance and drag, braking, and rolling resistance. Such non-engine losses can account for an approximate 45% decrease in efficiency. Other sources of energy loss include: friction and wear in the power train, thermal (heat) loads, operation of auxiliary loads (air conditioning, heaters, refrigeration, etc.), and engine idling. The parasitic loss activity identifies methodologies that may reduce energy losses, and tests those in the laboratory. Promising technologies are then prototyped and tested onboard heavy vehicles. Once validated, technologies must be tested on-road to obtain durability, reliability, and life-cycle cost data for the developmental component and/or design strategy.

493

Slide 1  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Spectrum Sciences & Software, Inc. Spectrum Sciences & Software, Inc. v. United States Breach of Contract The Facts The MAC * 1970s: The U.S. Air Force developed the munitions assembly conveyor (MAC), a bomb assembly line with a 4,000-pound capacity. * 1990s: The Air Force's increased reliance on guided bomb units ("smart" bombs) strained the MAC operating system - each assembled bomb weighed at least 2,800 pounds, slowing production. Pre-CRADA Activity * Spectrum, a munitions assembly systems manufacturer, undertook a significant, self-funded effort to upgrade the MAC: - Gantry. - Hoist. - Conveyor and braking systems. - Interface control board. - Work tables. - Lighting. * Spectrum needed the Air Force's cooperation to refine and test its improvements. * Spectrum negotiated with the Air Force a CRADA, which they signed

494

Fast-Tracking Drivetrain Electrification - Component Technology Development  

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The four main components used in drivetrain electrification The four main components used in drivetrain electrification are energy storage systems, power electronics, electric machines/gearboxes, and control systems. Argonne is actively pursuing increased performance and efficiency of these components along with reducing manufacturing costs. Cost reduction is addressed by reducing materials cost/ quantity, reducing labor/processing steps, increasing performance for the same components, and optimizing efficiency for the same materials cost. Energy Storage System Components Argonne has partnered with Maxwell Technologies to investigate the benefits of actively combining high power density ultracapacitors via power electronics with high energy density Li-Ion (or other future chemistry) batteries. This combination potentially reduces the net ESS cost and provides full acceleration and braking power at low

495

National Wind Technology Center to Debut New Dynamometer (Fact Sheet), Highlights in Research & Development, NREL (National Renewable Energy Laboratory)  

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New test facility will be used to accelerate the New test facility will be used to accelerate the development and deployment of next-generation wind energy technologies. This fall, the National Wind Technology Center (NWTC) at the National Renewable Energy Laboratory (NREL) will open a new dynamometer test facility. Funded by a grant from the U.S. Department of Energy under the American Recovery and Reinvestment Act (ARRA), the new facility will offer wind industry engineers a unique opportunity to conduct a wide range of tests on the mechanical and electrical power producing systems of a wind turbine including generators, gearboxes, power converters, bearings, brakes, lubrication, cooling, and control systems. Dynamometers enable industry and testing agencies to verify the performance and reliability

496

Electric Transportation Applications All Rights Reserved ETA-TP006  

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6 6 Revision 2 Effective March 1, 1997 Braking Test Prepared by Electric Transportation Applications Prepared by: _______________________________ Date:__________ Jude M. Clark Approved by: _________________________________________________ Date: _______________ Donald B. Karner Procedure ETA-TP006 Revision 2 2 ©1997 Electric Transportation Applications All Rights Reserved TABLE OF CONTENTS 1.0 Objectives 3 2.0 Purpose 3 3.0 Documentation 3 4.0 Initial Conditions and Prerequisites 4 5.0 Testing Activity Requirements 6 5.3 Dry Controlled Test 7 5.4 Wet Controlled Test 9 5.5 Wet Panic Test 11 6.0 Glossary 12 7.0 References 14 Appendices Appendix A - Handling Pad Test Data Sheet 15

497

Full Hybrid: Overview  

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highlighted Stop/Start button banner graphic: blue bar highlighted Stop/Start button banner graphic: blue bar subbanner graphic: gray bar Overview Button highlighted Starting button Low Speed button Cruising button Passing button Braking button Stopped button OVERVIEW Full hybrids use a gasoline engine as the primary source of power, and an electric motor provides additional power when needed. In addition, full hybrids can use the electric motor as the sole source of propulsion for low-speed, low-acceleration driving, such as in stop-and-go traffic or for backing up. This electric-only driving mode can further increase fuel efficiency under some driving conditions. stage graphic: vertical blue rule Main stage: See through car with battery, engine, generator, power split device, and electric motor visible. The car is stopped at an intersection.

498

STATEMENT OF CONSIDERATIONS  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Daimler Trucks North America LLC for an Advance Waiver of Domestic and Daimler Trucks North America LLC for an Advance Waiver of Domestic and Foreign Invention Rights under DOE Contract No. DE-EE0003348, W(A) 2012-027, CH-1665 The Petitioner, Daimler Trucks North America (Daimler) was awarded the subject cooperative agreement with DOE for the performance of work entitled , "Recovery Act-Class 8 Truck Efficiency Improvement Project" . The purpose of the program is to develop and demonstrate a 50% improvement in overall freight efficiency on a heavy-duty Class 8 tractor-trailer measure in ton-miles per gallon . This includes the development of an engine capable of achieving 50% brake thermal efficiency. A secondary objective is to identify, through modeling and analysis , key pathways to achieving a long-term goal of developing a 55% efficient heavy-duty diesel engine.

499

file:///E|/ev/test/evasc.shtml  

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Auxiliary Systems Impacts Auxiliary Systems Impacts As with gasoline-powered vehicles, electric vehicles have a number of auxiliary systems. Some systems, such as the radio/tape player, lights, and horn, operate the same way as they do on a gasoline- powered vehicle. Other systems, such as the power steering and power brakes, require an additional small electric motor and have minor impact on the vehicle range. However, the air conditioning and heating systems on electric vehicles are different and can have a dramatic impact on the range. Federal safety standards require all vehicles to have adequate heating and defrosting systems. The heater/defroster system is easily operated in a conventional gasoline-powered vehicle because a supply of heated water from the engine cooling system is readily available. Electric vehicles do not have this

500

Test Drive: Honda FCX Clarity | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Test Drive: Honda FCX Clarity Test Drive: Honda FCX Clarity Test Drive: Honda FCX Clarity May 14, 2010 - 10:52am Addthis A member of the Energy Empowers team takes the Honda FCX Clarity for a drive outside the U.S. Department of Energy in Washington, D.C. | Photo by Sunita Satyapal A member of the Energy Empowers team takes the Honda FCX Clarity for a drive outside the U.S. Department of Energy in Washington, D.C. | Photo by Sunita Satyapal Paul Lester Communications Specialist, Office of Energy Efficiency and Renewable Energy Stepping into the driver's seat of the hydrogen powered Honda FCX Clarity is like stepping into the future. A glowing blue 3-D dashboard displays hydrogen and battery levels and a power button fires up fuel cells that provide electricity. An advanced braking system warns the driver about