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Note: This page contains sample records for the topic "regenerative braking traction" 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

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

2

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

3

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

4

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

5

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

6

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

7

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

8

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

9

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.

10

Hybrid: Braking  

Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (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.

11

Hybrid Braking System for Non-Drive Axles  

Broader source: Energy.gov [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.

12

Full Hybrid: Braking  

Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (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.

13

Hybrid: Braking  

Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (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.

14

Hybrid: Braking  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (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.

15

Hybrid: Braking  

Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (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.

16

Traction Drive Systems Breakout  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Traction Drive Systems Breakout Traction Drive Systems Breakout John M. Miller, PhD, PE, F.IEEE, F.SAE Oak Ridge National Laboratory Facilitator July 24, 2012 EV Everywhere Grand Challenge Vehicle Technologies Program - Advanced Power Electronics and Electric Motors eere.energy.gov EV Everywhere Traction Drive System * DOE goals for Electric Traction Drive System (TDS) innovations must be disruptive innovation focused to meet the CY2022 price target ($20,000 $25,000) for a mid-sized 5 passenger sedan having 5 year simple payback. Enhanced Efficiency Reduced Cost Traction Drive System EETT Roadmap: "Therefore, research is needed to develop technologies that are less expensive and, at the same time, smaller, lighter, more efficient, and equally reliable as conventional automotive technologies. "

17

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

18

Traction Drive Systems Breakout Group  

Broader source: Energy.gov (indexed) [DOE]

overlook profit motive in value chain * 4 - Today's HEV systems drive EV traction drive systems because of manufacturing base Barriers Interfering with Reaching the Targets * 1 -...

19

Lightweight pressure vessels and unitized regenerative fuel cells  

SciTech Connect (OSTI)

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

20

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....

Note: This page contains sample records for the topic "regenerative braking traction" 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

WIND BRAKING OF MAGNETARS  

SciTech Connect (OSTI)

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

22

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

23

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

24

Regenerative catalytic oxidation  

SciTech Connect (OSTI)

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

25

Advanced Integrated Electric Traction System | Department of...  

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

Merit Review and Peer Evaluation Meeting, May 18-22, 2009 -- Washington D.C. ape09smith.pdf More Documents & Publications Advanced Integrated Electric Traction System...

26

Advanced Integrated Electric Traction System | Department of...  

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

and Vehicle Technologies Program Annual Merit Review and Peer Evaluation ape014smith2011o.pdf More Documents & Publications Advanced Integrated Electric Traction System...

27

Modular PM Motor Drives for Automotive Traction Applications  

SciTech Connect (OSTI)

This paper presents modular permanent magnet (PM) motor drives for automotive traction applications. A partially modularized drive system consisting of a single PM motor and multiple inverters is described. The motor has multiple three-phase stator winding sets and each winding set is driven with a separate three-phase inverter module. A truly modularized inverter and motor configuration based on an axial-gap PM motor is then introduced, in which identical PM motor modules are mounted on a common shaft and each motor module is powered by a separate inverter module. The advantages of the modular approach for both inverter and motor include: (1) power rating scalability--one design meets different power requirements by simply stacking an adequate number of modules, thus avoiding redesigning and reducing the development cost, (2) increased fault tolerance, and (3) easy repairing. A prototype was constructed by using two inverters and an axial-gap PM motor with two sets of three-phase stat or windings, and it is used to assist the diesel engine in a hybrid electric vehicle converted from a Chevrolet Suburban. The effect of different pulse-width-modulation strategies for both motoring and regenerative modes on current control is analyzed. Torque and regenerative control algorithms are implemented with a digital signal processor. Analytical and initial testing results are included in the paper.

Su, G.J.

2001-10-29T23:59:59.000Z

28

Utilizing the Traction Drive Power Electronics System to Provide...  

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

Utilizing the Traction Drive Power Electronics System to Provide Plug-in Capability for PHEVs Utilizing the Traction Drive Power Electronics System to Provide Plug-in Capability...

29

High-Temperature, Air-Cooled Traction Drive Inverter Packaging...  

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

Temperature, Air-Cooled Traction Drive Inverter Packaging High-Temperature, Air-Cooled Traction Drive Inverter Packaging 2010 DOE Vehicle Technologies and Hydrogen Programs Annual...

30

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

31

Advanced Integrated Electric Traction System | Department of...  

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

Merit Review and Peer Evaluation Meeting, June 7-11, 2010 -- Washington D.C. ape014smith2010o.pdf More Documents & Publications Advanced Integrated Electric Traction System...

32

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

33

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

34

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

35

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...

36

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

37

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

38

Posterior lip traction caused by intravitreal gas  

SciTech Connect (OSTI)

Traction on the posterior edge of a large tear may be an irreparable consequence of an intraocular gas tamponade used in the first instance to treat the tear. In two of three patients treated with octofluorocyclobutane (C4F8) and perfluoromethane (CF4), redetachment of a retinal tear occurred as a result of traction on the posterior edge of the tear when, prior to the operation, the posterior edge seemed to be free of any traction. With redetachment, a membrane became visible between the anterior and posterior lips of the tear. The membrane was probably posterior hyaloid augmented by cellular proliferation. The gas bubble, which had been intended to press the retina against the pigment epithelium, probably brought the detached posterior hyaloid into contact with the retina as well, and an adhesion between the hyaloid and retina formed.

Lincoff, H.; Kreissig, I.

1981-08-01T23:59:59.000Z

39

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

40

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

Note: This page contains sample records for the topic "regenerative braking traction" 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

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 engine–vehicle 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

42

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

43

PREDICTING RANGES FOR PULSARS' BRAKING INDICES  

SciTech Connect (OSTI)

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

44

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

45

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.

46

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

47

Voltage stabilization system in traction substation of urban electric transport  

Science Journals Connector (OSTI)

The direct current-voltage stabilization system using a high-frequency link in traction substations of urban electric transport based on applying...

S. V. Shapiro; S. F. Muftiev

2011-02-01T23:59:59.000Z

48

Hydrogen as an energy carrier for railway traction.  

E-Print Network [OSTI]

??The technical suitability of hydrogen for railway traction is evaluated in the research. World-wide, diesel fuel is currently the main source of energy for railways… (more)

Hoffrichter, Andreas

2013-01-01T23:59:59.000Z

49

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.

50

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)

51

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

52

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

53

Advanced Electric Traction System Technology Development  

SciTech Connect (OSTI)

As a subcontractor to General Motors (GM), Ames Laboratory provided the technical expertise and supplied experimental materials needed to assess the technology of high energy bonded permanent magnets that are injection or compression molded for use in the Advanced Electric Traction System motor. This support was a sustained (Phase 1: 6/07 to 3/08) engineering effort that builds on the research achievements of the primary FreedomCAR project at Ames Laboratory on development of high temperature magnet alloy particulate in both flake and spherical powder forms. Ames Lab also provide guidance and direction in selection of magnet materials and supported the fabrication of experimental magnet materials for development of injection molding and magnetization processes by Arnold Magnetics, another project partner. The work with Arnold Magnetics involved a close collaboration on particulate material design and processing to achieve enhanced particulate properties and magnetic performance in the resulting bonded magnets. The overall project direction was provided by GM Program Management and two design reviews were held at GM-ATC in Torrance, CA. Ames Lab utilized current expertise in magnet powder alloy design and processing, along with on-going research advances being achieved under the existing FreedomCAR Program project to help guide and direct work during Phase 1 for the Advanced Electric Traction System Technology Development Program. The technical tasks included review of previous GM and Arnold Magnets work and identification of improvements to the benchmark magnet material, Magnequench MQP-14-12. Other benchmark characteristics of the desired magnet material include 64% volumetric loading with PPS polymer and a recommended maximum use temperature of 200C. A collaborative relationship was maintained with Arnold Magnets on the specification and processing of the bonded magnet material required by GM-ATC.

Anderson, Iver

2011-01-14T23:59:59.000Z

54

Toward single cell traction microscopy within 3D collagen matrices  

SciTech Connect (OSTI)

Mechanical interaction between the cell and its extracellular matrix (ECM) regulates cellular behaviors, including proliferation, differentiation, adhesion, and migration. Cells require the three-dimensional (3D) architectural support of the ECM to perform physiologically realistic functions. However, current understanding of cell–ECM and cell–cell mechanical interactions is largely derived from 2D cell traction force microscopy, in which cells are cultured on a flat substrate. 3D cell traction microscopy is emerging for mapping traction fields of single animal cells embedded in either synthetic or natively derived fibrous gels. We discuss here the development of 3D cell traction microscopy, its current limitations, and perspectives on the future of this technology. Emphasis is placed on strategies for applying 3D cell traction microscopy to individual tumor cell migration within collagen gels. - Highlights: • Review of the current state of the art in 3D cell traction force microscopy. • Bulk and micro-characterization of remodelable fibrous collagen gels. • Strategies for performing 3D cell traction microscopy within collagen gels.

Hall, Matthew S. [Department of Biological and Environmental Engineering, Cornell University, Ithaca, NY 14853 (United States); Long, Rong [Department of Mechanical Engineering, University of Alberta, Edmonton, AB, Canada T6G 2G8 (Canada); Feng, Xinzeng [Department of Mechanical and Aerospace Engineering, Cornell University, Ithaca, NY 14853 (United States); Huang, YuLing [Department of Biological and Environmental Engineering, Cornell University, Ithaca, NY 14853 (United States); Hui, Chung-Yuen [Department of Mechanical and Aerospace Engineering, Cornell University, Ithaca, NY 14853 (United States); Wu, Mingming, E-mail: mw272@cornell.edu [Department of Biological and Environmental Engineering, Cornell University, Ithaca, NY 14853 (United States)

2013-10-01T23:59:59.000Z

55

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

56

Regenerative Fuel Cells for Energy Storage | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

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

57

Measuring Shear Stress in Microfluidics using Traction Force Microscopy  

Science Journals Connector (OSTI)

Traction force microscopy is a previously-developed method to measure shear forces exerted by biological cells on substrates to which they are adhered (Dembo, 1999). The technique determines the shear stress a...

Bryant Mueller

2011-01-01T23:59:59.000Z

58

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 5–10% 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 20–30% of the trailer maximum gross laden weight is considered to be very desirable.

M.J. Dwyer

1970-01-01T23:59:59.000Z

59

Rare-Earth-Free Traction Motor: Rare Earth-Free Traction Motor for Electric Vehicle Applications  

SciTech Connect (OSTI)

REACT Project: Baldor will develop a new type of traction motor with the potential to efficiently power future generations of EVs. Unlike today’s large, bulky EV motors which use expensive, imported rare-earth-based magnets, Baldor’s motor could be light, compact, contain no rare earth materials, and have the potential to deliver more torque at a substantially lower cost. Key innovations in this project include the use of a unique motor design, incorporation of an improved cooling system, and the development of advanced materials manufacturing techniques. These innovations could significantly reduce the cost of an electric motor.

None

2012-01-01T23:59:59.000Z

60

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

Note: This page contains sample records for the topic "regenerative braking traction" 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

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

62

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

63

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

64

Regenerative fuel cell engineering - FY99  

SciTech Connect (OSTI)

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

65

Regenerative rotary displacer Stirling engine  

SciTech Connect (OSTI)

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

66

Design of H Bridge Cascaded Filter and Bidirectional Converter for Railway Traction System  

Science Journals Connector (OSTI)

To develop a practical and efficient electronic device for compensating the negative, reactive and harmonic current in the railway traction system, the paper analyses the structure of the present railway traction...

Tian Mingxing; Zhao Qingchun; Yang Jianfeng

2014-01-01T23:59:59.000Z

67

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

68

Therapeutic potential of nanoceria in regenerative medicine.  

SciTech Connect (OSTI)

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

69

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

70

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

71

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

72

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

73

E-Print Network 3.0 - air brakes Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (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 ......

74

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

Broader source: All U.S. Department of Energy (DOE) Office Webpages (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...

75

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

Broader source: All U.S. Department of Energy (DOE) Office Webpages (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...

76

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

77

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

78

Lithium Economy: Will It Get the Electric Traction?  

Science Journals Connector (OSTI)

Lithium Economy: Will It Get the Electric Traction? ... In the battle for alternative fuels for a decarbonized transportation sector, electricity has a definite edge. ... However, at the large scales of extraction required for transforming the automobile scene, the production facilities could pose severe challenges to the environment in terms of water table and fresh water supplies as well as the fallout of the extraction on the flora and fauna in the neighborhood. ...

A. K. Shukla; T. Prem Kumar

2013-02-07T23:59:59.000Z

79

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

80

A frequency domain model for 3 kV dc traction dc-side resonance identification  

SciTech Connect (OSTI)

Frequency-dependent effects in railway traction power systems arise from the impedance of substation and locomotive line filters and the traction line. Harmonic noise from traction drives and substations can excite resonances and produce overcurrent or overvoltage conditions at critical points in the network. In this paper, the harmonic feeding impedances of a 3 kV DC traction system seen from the rectifier substation, locomotive drive converter and pantograph terminals are presented. Several substation and locomotive filters are considered with a frequency-dependent traction line. Resonances attributed to the substation filter, locomotive filter and traction line are separate and distinct, the line introducing poles and zeros in the audio frequency (AF) range which vary in frequency and magnitude with locomotive position.

Hill, R.J. [Univ. of Bath (United Kingdom). School of Electronic and Electrical Engineering] [Univ. of Bath (United Kingdom). School of Electronic and Electrical Engineering; Fracchia, M.; Pozzobon, P.; Sciutto, G. [Univ. degli Studi di Genova (Italy). Dipt. di Ingegneria Elettrica] [Univ. degli Studi di Genova (Italy). Dipt. di Ingegneria Elettrica

1995-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "regenerative braking traction" 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

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

82

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

83

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

84

E-Print Network 3.0 - asynchronous traction engines Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

. Traction aids can also increase machine stability, improve flotation and protect tyres (Figure 1 Source: Forest Research Agency of the UK Forestry Commission Collection:...

85

E-Print Network 3.0 - ac traction drives Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

. Traction aids can also increase machine stability, improve flotation and protect tyres (Figure 1 Source: Forest Research Agency of the UK Forestry Commission Collection:...

86

Powering MEMS portable devices—a 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

87

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

88

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

89

Investigation of aerodynamic braking devices for wind turbine applications  

SciTech Connect (OSTI)

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

90

A Power Presizing Methodology for Electric Vehicle Traction Motors Bekheira Tabbache1,2  

E-Print Network [OSTI]

A Power Presizing Methodology for Electric Vehicle Traction Motors Bekheira Tabbache1,2 , Sofiane for presizing the power of an electric vehicle traction motor. Based on the vehicle desired performances motor, power presizing, driving cycle. Nomenclature EV = Electric Vehicle; V = Vehicle speed; Vb

Paris-Sud XI, Université de

91

A Multiphase Traction/Fast-Battery-Charger Drive for Electric or Plug-in Hybrid Vehicles  

E-Print Network [OSTI]

A Multiphase Traction/Fast-Battery-Charger Drive for Electric or Plug-in Hybrid Vehicles Solutions on an original electric drive [1]-[3] dedicated to the vehicle traction and configurable as a battery charger concerning the electrical machine control. This paper deals with the control of this drive [1], focusing

Paris-Sud XI, Université de

92

Exploring the Effect of Inter-Stop Transport Distances on Traction Energy Cost Intensities of Freight Trains  

Science Journals Connector (OSTI)

With a computer-aided simulation approach, this research analyzes the change of the traction energy cost intensity of a typically formed Chinese freight ... than 20.00 km to decrease the traction energy cost per ...

Xuesong Feng; Haidong Liu; Keqi Wu

2013-01-01T23:59:59.000Z

93

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

94

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

95

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

96

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

97

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

98

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

99

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

100

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

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

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

Note: This page contains sample records for the topic "regenerative braking traction" 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

Study on integrated automation system of traction substation for express railway lines  

Science Journals Connector (OSTI)

The structure and function of integrated automation system of traction substation for express electric railway lines developed by our university are discussed in this paper. The paper mainly describes the function installation of monitoring and communication ...

Gao Shibin; Chen Xiaochuan; Wang Qian; Wang Ren; Chen Weirong; Xiong Liebin

2002-11-01T23:59:59.000Z

102

Fault diagnosis of electric railway traction substation with model-based relation guiding algorithm  

Science Journals Connector (OSTI)

Abstract Most diagnosis systems used in electric railway traction substation are expert systems based on experience, which cannot diagnose faults beyond experience and are very difficult for transplantation and maintenance. In this paper, the model-based diagnosis (MBD) with integration reasoning is firstly used for fault diagnosis of electric railway traction substation. Aiming at the structural characteristics and actual demands of traction substation, we propose a detailed application plan. Rules for element and system models are established. In addition, we propose a relation guiding algorithm (RGA) for searching candidates of minimal conflict set, in which the hidden messages of analytical redundancy relations can be made full use of and the searching space is reduced further. Taking the autotransformer (AT) traction substation in Hefei–Nanjing Passenger Link of China Railway as an example, we construct models for different device objects, and give the descriptions of system model in traction substation. Based on a sequence of fault observations, the fault diagnosis is tested with the proposed plan. The diagnosis result shows that the application plan with MBD and integration reasoning is feasible and effective for traction substation.

Zhigang Liu; Zhiwei Han

2014-01-01T23:59:59.000Z

103

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

104

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

105

Comparison of the environmental performance of light mechanization and animal traction using a modular LCA approach  

Science Journals Connector (OSTI)

Abstract Animal traction has supported humans in most field operations since the origin of agriculture. With the introduction of mechanization, humans gained access to much more work power at similar management costs and were able to significantly increase the productivity and time efficiency of field operations. This achievement completely changed food production systems for all populations able to access such technology. Nowadays, animal traction is mainly used in the developing countries, in specific contexts such as mountainous areas due to the difficulties in using tractors, and within farm tourism in the developed countries. Although the consumption of non-renewable resources is clearly higher in crop production systems that use mechanized traction, tractor traction may involve low consumption of fuel relative to that needed for feed production for equivalent draught animals. Mechanical traction can also facilitate precision agriculture, which uses less fuel, while animals, as living systems, consume resources even when they are not working. This study compared the environmental performance of animal traction with that of machine traction in two scenarios: (I) A forest harvesting system, using as the functional unit the logging operations needed to obtain 50 t market-ready wood and (II) a seedbed preparation system, using as the functional unit the management of 1000 m2 of prepared seedbed. Use of animal traction for these two systems was evaluated on the La Masca farm in Roccaverano, Asti, Northern Italy, while use of machine traction was evaluated using field data on two-wheel tractors performing the operations in similar production systems, converted to the specific functional unit. Owing to the differing properties of mechanical and living systems, it was difficult to establish a reliable standard LCA model of the forestry and food production system. In particular, it proved necessary to include the whole life cycle impacts from tractors and animals. Therefore, we applied a modular LCA approach in which all mechanical implements and animals were accounted as independent modules, a complete life cycle impact assessment phase was performed and results were related to the contribution of the module in the main workflow of the scenario. The final results showed better environmental performance of animal traction both per unit weight of market-ready wood and per unit surface area of prepared seedbed.

Alessandro K. Cerutti; Angela Calvo; Sander Bruun

2014-01-01T23:59:59.000Z

106

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":""}]}

107

A Five-Leg Inverter for Driving a Traction Motor and a Compressor Motor  

SciTech Connect (OSTI)

This paper presents an integrated inverter for speed control of a traction motor and a compressor motor to reduce the compressor drive cost in EV/HEV applications. The inverter comprises five phase-legs; three of which are for control of a three-phase traction motor and the remaining two for a two-phase compressor motor with three terminals. The common terminal of the two-phase motor is tied to the neutral point of the three-phase traction motor to eliminate the requirement of a third phase leg. Further cost savings are made possible by sharing the switching devices, dc bus filter capacitors, gate drive power supplies, and control circuit. Simulation and experimental results are included to verify that speed control of the two motors is independent from each other.

Su, Gui-Jia [ORNL; Hsu, John S [ORNL

2006-01-01T23:59:59.000Z

108

Development of traction control for front-wheel drive in-wheel motor electric vehicles  

Science Journals Connector (OSTI)

This paper proposes a novel traction control for a front-wheel drive in-wheel motor electric vehicle. The presented vehicle has advantages on high fuel efficiency and cost effectiveness. In order to achieve specific control performance, this study employed a high speed microcontroller as the vehicle's electronic control unit. The anti-skid function based on a reliable traction control kernel is embedded in the system, which can guarantee the steering safety in a slippery and dangerous situation. This study verifies that the traction control based on maximum torque regulation cannot only constrain the slip to improve the longitudinal friction force and lateral friction force, but also provide some information on tyre-road conditions, which can ensure the performance and the effectiveness of two-dimensional motion control. The numerical simulation and demonstration video reveal its effectiveness and feasibility.

Jia-Sheng Hu; Ying-Ruei Huang; Feng-Rung Hu

2012-01-01T23:59:59.000Z

109

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

110

E-Print Network 3.0 - automatic braking Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

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

111

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

Broader source: All U.S. Department of Energy (DOE) Office Webpages (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...

112

Conversion of a regenerative oxidizer into catalytic unit  

SciTech Connect (OSTI)

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

113

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

114

Alkaline regenerative fuel cell systems for energy storage  

SciTech Connect (OSTI)

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

115

Low cost, compact, and high efficiency traction motor for electric and hybrid electric vehicles  

SciTech Connect (OSTI)

A new motor drive, the switched reluctance motor drive, has been developed for hybrid-electric vehicles. The motor drive has been designed, built and tested in the test bed at a near vehicle scale. It has been shown that the switched reluctance motor drive is more suitable for traction application than any other motor drive.

Ehsani, Mark

2002-10-07T23:59:59.000Z

116

SDTC Neural Network Traction Control of an Electric Vehicle without Differential Gears  

E-Print Network [OSTI]

, using two electric in-wheel motors give the possibility to have a torque and speed control in each wheel on the 2Ã?4 electrical vehicles, with independent driving in-wheel motor at the front and with classicalSDTC Neural Network Traction Control of an Electric Vehicle without Differential Gears A. Haddoun1

Paris-Sud XI, Université de

117

A New Aerodynamic Traction Principle for Handling Products on an Air Cushion  

E-Print Network [OSTI]

1 A New Aerodynamic Traction Principle for Handling Products on an Air Cushion Guillaume J. Laurent. The product is carried on a thin air cushion and transported along the system by induced air flows principle for handling delicate and clean products, such as silicon wafers, glass sheets or flat foodstuff

Paris-Sud XI, Université de

118

Co-Simulation of an Electric Traction Drive Christoph Schulte and Joachim Bocker  

E-Print Network [OSTI]

Co-Simulation of an Electric Traction Drive Christoph Schulte and Joachim B¨ocker Abstract--For the simulation of electrical drives, reduced- order models or simple look-up tables are often used in order) for an electric drive, where the control structure, power electronics and motor are modeled in different environ

Paderborn, Universität

119

A Library of SIMULINK Blocks for Real-Time Control of HEV Traction John Chiasson1  

E-Print Network [OSTI]

algorithms for the various types of motor drives considered for hybrid electric vehicles (HEVs algorithms for the various types of motor drives considered for hybrid electric vehicles (HEVs02FCC-30 A Library of SIMULINK Blocks for Real-Time Control of HEV Traction Drives John Chiasson1

Tolbert, Leon M.

120

INTRODUCTION The main reasons for fitting traction aids to forest machines  

E-Print Network [OSTI]

INTRODUCTION The main reasons for fitting traction aids to forest machines are to increase the grip between machine wheels and the ground surface and to spread load weight. The area of the wheel in contact than wheels alone the footprint size increases and ground pressure exerted by the machine is reduced

Note: This page contains sample records for the topic "regenerative braking traction" 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

EV3 : Traction drives and generators A: Electric machine design and optimization 1  

E-Print Network [OSTI]

EV3 : Traction drives and generators A: Electric machine design and optimization 1 Influence Electrical Machine Type B. Aslan1 , J. Korecki1 , T. Vigier1 , E. Semail1 bassel.aslan@yahoo.com, korecki according to the electrical angle e (angle between current and back-EMF vector), for different values

Boyer, Edmond

122

A micropatterning and image processing approach to simplify measurement of cellular traction forces  

E-Print Network [OSTI]

of traction force microscopy on polyacrylamide (PAA) gels that addresses limitations of existing technologies. Through an indirect pat- terning technique, we generated PAA gels with fluorescent 1 lm dot markers (PAA) hydrogels are popular substrates for this purpose, although PAA substrates first have

123

Laboratory testing of Saft SEH-5-200 6 volt traction battery  

SciTech Connect (OSTI)

The purpose of this report is to describe the testing performed on the Saft SEH-5-200 flooded nickel cadmium traction battery by the INEL Electric Vehicle Battery Laboratory, to present the results and conclusions of this testing, and to make appropriate recommendations. 17 figs., 3 tabs.

Hardin, J.E.

1989-12-01T23:59:59.000Z

124

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

125

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

126

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

127

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

128

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

129

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

Broader source: All U.S. Department of Energy (DOE) Office Webpages (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 -

130

Wind turbine trailing-edge aerodynamic brake design  

SciTech Connect (OSTI)

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

131

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

132

Regenerative thermal oxidation and alternative technologies for VOC control  

SciTech Connect (OSTI)

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

133

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

134

Traction Drive System for Electric Vehicles, Using Multilevel Converters Juan W. Dixon, Micah Ortzar and Felipe Ros  

E-Print Network [OSTI]

Traction Drive System for Electric Vehicles, Using Multilevel Converters Juan W. Dixon, Micah converters for electric vehicles using multilevel inverters. They are being compared with inverters using. Introduction Power Electronics technologies contribute with important part in the development of electric

Catholic University of Chile (Universidad Católica de Chile)

135

ECE 438 Electric and Hybrid Vehicles Catalog Description: History of electric traction. Introduction to electric and hybrid-electric  

E-Print Network [OSTI]

ECE 438 ­ Electric and Hybrid Vehicles Catalog Description: History of electric traction. Introduction to electric and hybrid-electric vehicle configurations. Vehicle mechanics. Energy sources and storage. Range prediction. Motor for HEVs. Electric drive components. Vehicle transmission system. Credits

136

Roles of 3D traction forces in migration and focal adhesion dynamics of bovine aortic endothelial cells  

E-Print Network [OSTI]

BY BAEC. 51 FIG. 3-21. 3D DISPLACEMENT FIELD BY BAECPAXILLIN 52 xii FIG. 3-22. 3D TRACTION FORCE FIELD BY BAEC61 FIG. 3-31. 3D DISPLACEMENT FIELD OF GFP-FAK TRANSFECTED

Hur, Sung-Sik

2007-01-01T23:59:59.000Z

137

VEHICLE SPECIFICATIONS Vehicle Features Base Vehicle: 2010 Honda  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (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

138

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 (?2.25 wt.%) enha...

Tej Singh; Amar Patnaik…

2013-03-01T23:59:59.000Z

139

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

140

Theoretical and experimental study on regenerative rotary displacer Stirling engine  

SciTech Connect (OSTI)

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

Note: This page contains sample records for the topic "regenerative braking traction" 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

Propellant feed system of a regeneratively cooled scramjet  

SciTech Connect (OSTI)

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

142

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 Lütkenhaus

2014-10-02T23:59:59.000Z

143

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

144

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

145

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

146

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

147

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

SciTech Connect (OSTI)

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

148

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

SciTech Connect (OSTI)

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

149

Electric Traction  

Science Journals Connector (OSTI)

... is followed in the part devoted to railways, with the addition of a chapter on substations. Then follows a chapter on cost of tramway work, which, being taken from ... ton-mile, it does not necessarily mean low running cost, because the cost of substations and feeders increases considerably wilh I he acceleration provided for. All these matters are ...

GISBERT KAPP

1907-12-26T23:59:59.000Z

150

Reduction of carbon monoxide emissions with regenerative thermal oxidizers  

SciTech Connect (OSTI)

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

151

Innovative technical advances in the application of regenerative thermal oxidizers  

SciTech Connect (OSTI)

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

152

Performance analysis of reciprocating regenerative magnetic heat pumping. Final report  

SciTech Connect (OSTI)

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

153

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

154

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

155

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

SciTech Connect (OSTI)

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

156

3736 IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, VOL. 59, NO. 8, OCTOBER 2010 Asymmetrical Multilevel Inverter for Traction Drives  

E-Print Network [OSTI]

this "one-source" multilevel system. Index Terms--AC motor drives, electric vehicles (EVs), hybrid EVs (HEVs Multilevel Inverter for Traction Drives Using Only One DC Supply Juan Dixon, Senior Member, IEEE, Javier of isolated and floating dc supplies, which makes these converters complicated to implement in electric

Catholic University of Chile (Universidad Católica de Chile)

157

PM Motor Parametric Design Analyses for a Hybrid Electric Vehicle Traction Drive Application  

SciTech Connect (OSTI)

The Department of Energy's (DOE) Office of FreedomCAR (Cooperative Automotive Research) and Vehicle Technologies office has a strong interest in making rapid progress in permanent magnet (PM) machine development. The DOE FreedomCAR program is directing various technology development projects that will advance the technology and hopefully lead to a near-term request for proposals (RFP) for a to-be-determined level of initial production. This aggressive approach is possible because the technology is clearly within reach and the approach is deemed essential, based on strong market demand, escalating fuel prices, and competitive considerations. In response, this study began parallel development paths that included a literature search/review, development and utilization of multiple parametric models, verification of the modeling methodology, development of an interior PM (IPM) machine baseline design, development of alternative machine baseline designs, and cost analyses for several candidate machines. This report summarizes the results of these activities as of September 2004. This report provides background and summary information for recent machine parametric studies and testing programs that demonstrate both the potential capabilities and technical limitations of brushless PM machines (axial gap and radial gap), the IPM machine, the surface-mount PM machines (interior or exterior rotor), induction machines, and switched-reluctance machines. The FreedomCAR program, while acknowledging the progress made by Oak Ridge National Laboratory (ORNL), Delphi, Delco-Remy International, and others in these programs, has redirected efforts toward a ''short path'' to a marketable and competitive PM motor for hybrid electric vehicle (HEV) traction applications. The program has developed a set of performance targets for the type of traction machine desired. The short-path approach entails a comprehensive design effort focusing on the IPM machine and meeting the performance targets. The selection of the IPM machine reflects industry's confidence in this market-proven design that exhibits a high power density.

Staunton, R.H.

2004-10-11T23:59:59.000Z

158

PM Motor Parametric Design Analyses for Hybrid Electric Vehicle Traction Drive Application: Interim Report  

SciTech Connect (OSTI)

The Department of Energy's (DOE) Office of FreedomCAR (Cooperative Automotive Research) and Vehicle Technologies has a strong interest in making rapid progress in permanent magnet (PM) machine development. The program is directing various technology development projects that will advance the technology and lead to request for proposals (RFP) for manufacturer prototypes. This aggressive approach is possible because the technology is clearly within reach and the approach is deemed essential, based on strong market demand, escalating fuel prices, and competitive considerations. In response, this study began parallel development paths that included a literature search/review, development and utilization of multiple parametric models to determine the effects of design parameters, verification of the modeling methodology, development of an interior PM (IPM) machine baseline design, development of alternative machine baseline designs, and cost analyses for several candidate machines. This interim progress report summarizes the results of these activities as of June 2004. This report provides background and summary information for recent machine parametric studies and testing programs that demonstrate both the potential capabilities and technical limitations of brushless PM machines (axial gap and radial gap), the IPM machine, the surface-mount PM machines (interior or exterior rotor), induction machines, and switched reluctance machines. The FreedomCAR program, while acknowledging the progress made by Oak Ridge National Laboratory, Delphi, Delco-Remy International, and others in these programs, has redirected efforts toward a ''short path'' to a marketable and competitive PM motor for hybrid electric vehicle traction applications. The program has developed a set of performance targets for the type of traction machine desired. The short-path approach entails a comprehensive design effort focusing on the IPM machine and meeting the performance targets. The selection of the IPM machine reflects industry's confidence in this market-proven design that exhibits a power density surpassed by no other machine design.

Staunton, R.H.

2004-08-11T23:59:59.000Z

159

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

SciTech Connect (OSTI)

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

160

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

Note: This page contains sample records for the topic "regenerative braking traction" 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

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

162

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

163

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 deposition–precipitation, 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 20 wt.% metal on ceramic honeycomb (CH). 20 wt.% Cu–Co/(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) = 400 °C under various conditions. It also had the largest tolerance of variations in inlet IPA concentration and gas velocity (Ug). This 20 wt.% Cu–Co/(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 300 °C, and that to propene remained at 2–5% from 200 to 400 °C. Finally, the stability test results indicated that the 20 wt.% Cu–Co/(CH) catalyst was very stable at various CO2 yields and temperatures.

Jie-Chung Lou; Shih-Wei Huang

2008-01-01T23:59:59.000Z

164

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

165

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

166

Effets de l'hydrogene sur les caracteristiques de rupture par traction d'aciers inoxydables  

Science Journals Connector (OSTI)

Résumé On étudie les effets de l'hydrogéne sur des aciers inoxydables, qui sont des matèriaux de gainage possibles pour des réacteurs utilisant l'hydrogène comme gaz de refroidissement. On montre que la charge apparente de rupture à la traction n'est plus que 80 % de sa valeur initiale lorsque la teneur en hydrogène atteint 50 cc TPN/100 g, et que la striction passe dans ces conditions de 80 % à 55 %. L'examen microfractographique qui a été effectué avec succès par une technique de double réplique malgré la petitesse des échantillons (? 0,3 mm environ), révèle que tout en gardant un caractère ductile, l'aspect des surfaces de rupture évolue notablement avec la teneur en hydrogène. This paper deals with the effects of hydrogen on stainless steel, which is a possible canning material in hydrogen-cooled reactors. Apparent ultimate tensile strength is only 80 % of the initial value for a hydrogen content of about 50 cc NTP/100 g and reduction in area decreases from 80 % to 55 %. A special two-stage replica technique has been developed which allows fracture surfaces of small tensile specimens (about 0.3 mm dia.) to be examined by electron microscopy. All the specimens showed evidence of ductile character throughout the range of hydrogen contents investigated, but the aspect of the fracture surface gradually changes with increasing hydrogen content.

R. Blanchard; J. Pelissier; M. Pluchery

1960-01-01T23:59:59.000Z

167

Adaptive scapula bone remodeling computational simulation: Relevance to regenerative medicine  

SciTech Connect (OSTI)

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 scapula’s 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 element’s 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

168

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

SciTech Connect (OSTI)

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

169

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

SciTech Connect (OSTI)

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

170

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

171

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

SciTech Connect (OSTI)

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

172

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

SciTech Connect (OSTI)

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

173

Traction Drive Inverter Cooling with Submerged Liquid Jet Impingement on Microfinned Enhanced Surfaces (Presentation)  

SciTech Connect (OSTI)

Jet impingement is one means to improve thermal management for power electronics in electric-drive traction vehicles. Jet impingement on microfin-enhanced surfaces further augments heat transfer and thermal performance. A channel flow heat exchanger from a commercial inverter was characterized as a baseline system for comparison with two new prototype designs using liquid jet impingement on plain and microfinned enhanced surfaces. The submerged jets can target areas with the highest heat flux to provide local cooling, such as areas under insulated-gate bipolar transistors and diode devices. Low power experiments, where four diodes were powered, dissipated 105 W of heat and were used to validate computational fluid dynamics modeling of the baseline and prototype designs. Experiments and modeling used typical automotive flow rates using water-ethylene glycol as a coolant (50%-50% by volume). The computational fluid dynamics model was used to predict full inverter power heat dissipation. The channel flow and jet impingement configurations were tested at full inverter power of 40 to 100 kW (output power) on a dynamometer, translating to an approximate heat dissipation of 1 to 2 kW. With jet impingement, the cold plate material is not critical for the thermal pathway. A high-temperature plastic was used that could eventually be injection molded or formed, with the jets formed from a basic aluminum plate with orifices acting as nozzles. Long-term reliability of the jet nozzles and impingement on enhanced surfaces was examined. For jet impingement on microfinned surfaces, thermal performance increased 17%. Along with a weight reduction of approximately 3 kg, the specific power (kW/kg) increased by 36%, with an increase in power density (kW/L) of 12% compared with the baseline channel flow configuration.

Waye, S.; Narumanchi, S.; Moreno, G.

2014-09-01T23:59:59.000Z

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; Çankaya, Hüseyin; Kärtner, 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

Personal equipment for low seam coal miners. 8. Improved traction rubber boot soles. Report for 1978-82  

SciTech Connect (OSTI)

Based on laboratory and preliminary field tests of off-the-shelf steel-toed rubber boots, a molded sole design was developed to provide increased traction over conventional calendared sole miners boots. The pattern provided sharp edges perpendicular to both lateral and fore-aft slip vectors. The sole was designed to reduce mud caking. An instep lace-up capability was added to better secure the foot inside the boot. A 5-month field evaluation compared the prototype boots to the boots the participants usually wear.

Sanders, M.S.; Downing, J.V.

1982-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "regenerative braking traction" 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.


181

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

SciTech Connect (OSTI)

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

182

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

183

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

184

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

SciTech Connect (OSTI)

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

185

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 200 GW 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

186

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

187

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

SciTech Connect (OSTI)

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

188

Evaluation of a Current Source Active Power Filter to Reduce the DC Bus Capacitor in a Hybrid Electric Vehicle Traction Drive  

E-Print Network [OSTI]

Electric Vehicle Traction Drive Shengnan Li Student Member, IEEE The University of Tennessee Department Science Knoxville, TN, 37996, USA tolbert@utk.edu Abstract ­ In hybrid electric vehicles (HEV), a battery-source inverter, dc bus capacitor, Electric vehicle, Harmonic current, Hybrid electric vehicle. I. INTRODUCTION

Tolbert, Leon M.

189

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

190

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

191

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

SciTech Connect (OSTI)

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

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

Broader source: Energy.gov (indexed) [DOE]

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

193

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

194

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

SciTech Connect (OSTI)

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

195

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

196

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

198

Traction Drive System Modeling  

Broader source: Energy.gov [DOE]

2013 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting

199

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

SciTech Connect (OSTI)

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

200

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

Note: This page contains sample records for the topic "regenerative braking traction" 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

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

202

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 130 °C. 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 100–130 °C range, while the return temperature of the brine is assumed to be between 70 and 100 °C. 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

203

Regenerative fuel cells for High Altitude Long Endurance Solar Powered Aircraft  

SciTech Connect (OSTI)

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

204

Regenerative air energy storage for remote wind–diesel 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 0.5 MW and 1 MW h 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

205

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

SciTech Connect (OSTI)

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

206

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

SciTech Connect (OSTI)

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

207

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

SciTech Connect (OSTI)

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

208

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.

209

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...

210

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

211

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

212

Stop/Start: Overview  

Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (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...

213

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

SciTech Connect (OSTI)

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

214

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

215

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 (42.46 kW), 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

216

Gas cooled traction drive inverter  

SciTech Connect (OSTI)

The present invention provides a modular circuit card configuration for distributing heat among a plurality of circuit cards. Each circuit card includes a housing adapted to dissipate heat in response to gas flow over the housing. In one aspect, a gas-cooled inverter includes a plurality of inverter circuit cards, and a plurality of circuit card housings, each of which encloses one of the plurality of inverter cards.

Chinthavali, Madhu Sudhan

2013-10-08T23:59:59.000Z

217

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

218

Thermal regenerative injector  

SciTech Connect (OSTI)

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

219

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.

220

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

Note: This page contains sample records for the topic "regenerative braking traction" 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 a He{sup 3}?He{sup 4} sub Kelvin active magnetic regenerative refrigerator (AMRR) with no moving parts  

SciTech Connect (OSTI)

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

222

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 300 °C (45 °C resuperheated from 255 °C) 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 340 °C (85 °C 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

223

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 0.7/0.3 mol fraction). Based on initial calculations of RORC system performance, the intermediate pressure is set to 1.15 MPa for the RORC system when using isopentane/R245fa (in a 0.7/0.3 mol fraction) as the working fluid, and 1.2 MPa 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 0.7/0.3 mol 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 engine’s 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

224

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

225

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

226

Permanent Magnet Development for Automotive Traction Motors  

Broader source: Energy.gov [DOE]

2013 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting

227

Permanent Magnet Development for Automotive Traction Motors  

Broader source: Energy.gov [DOE]

2011 DOE Hydrogen and Fuel Cells Program, and Vehicle Technologies Program Annual Merit Review and Peer Evaluation

228

Permanent Magnet Development for Automotive Traction Motors  

Broader source: Energy.gov [DOE]

2010 DOE Vehicle Technologies and Hydrogen Programs Annual Merit Review and Peer Evaluation Meeting, June 7-11, 2010 -- Washington D.C.

229

Permanent Magnet Development for Automotive Traction Motors  

Broader source: Energy.gov [DOE]

2012 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting

230

High Power Density Integrated Traction Machine Drive  

Broader source: Energy.gov [DOE]

2011 DOE Hydrogen and Fuel Cells Program, and Vehicle Technologies Program Annual Merit Review and Peer Evaluation

231

Thermal Modelling of Powerful Traction Battery Charger  

Science Journals Connector (OSTI)

In this paper, the author presents survey of the modern approaches in the thermal analysis of power electronic systems. The improvement and the new methods are applied to the real engineering problem. The ther...

R. Vlach

2012-01-01T23:59:59.000Z

232

Air-Cooled Traction Drive Inverter  

Broader source: Energy.gov (indexed) [DOE]

the high temperature operating capability of wide bandgap (WBG) devices. New low-loss Si IGBTs. Innovative heat sink design minimizes the thermal resistance. Fewer...

233

Advanced Integrated Electric Traction System | Department of...  

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

"Mega" Merit Review 2008 on February 25, 2008 in Bethesda, Maryland. merit08smith.pdf More Documents & Publications Advnaced Power Electronics and Electric Machines...

234

Air-Cooled Traction Drive Inverter  

Broader source: Energy.gov [DOE]

2012 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting

235

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

236

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

237

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

238

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

239

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...

240

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

Note: This page contains sample records for the topic "regenerative braking traction" 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

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

242

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

243

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....

244

VEHICLE SPECIFICATIONS Vehicle Features Base Vehicle: 2010 Smart  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (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

245

VEHICLE SPECIFICATIONS Vehicle Features  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (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

246

EV Everywhere Workshop: Traction Drive Systems Breakout Group Report  

Broader source: Energy.gov [DOE]

Presentation given at the EV Everywhere Grand Challenge - Electric Drive (Power Electronics and Electric Machines) Workshop on July 24, 2012 held at the Doubletree O'Hare, Chicago, IL.

247

Influence of surface traction on soft robot undulation  

E-Print Network [OSTI]

principles of elasticity and friction, we introduce a theoretical model that identifies the tribological their shape and functionality. This unique combination of mobil- ity, elastic compliance, and multi physical factors and classical theories that could eventually be used to find locomotion strategies

Liu, David R.

248

Design and Implementation of an Electric Differential for Traction Application  

E-Print Network [OSTI]

and transmissions with lighter and smaller electric motors directly coupled to the wheels via a single gear or an in-wheel motor. This paper deals then with an Electric Differential System (EDS) for an Electric Vehicle (EV angle with good static and dynamic performances. Index Terms--Electric Vehicle (EV), induction motor

Paris-Sud XI, Université de

249

Numerical Simulation of the Thermal Management for Traction Batteries  

Science Journals Connector (OSTI)

The electrification of vehicle powertrains is a rapidly developing technology. Especially for the development of the used high-voltage batteries, an elaborated thermal management is needed to secure their perform...

Xiao Hu

2012-02-01T23:59:59.000Z

250

Goodyear Tire Plant Gains Traction on Energy Savings After Completing...  

Broader source: Energy.gov (indexed) [DOE]

Completing Save Energy Now Assessment Saves 875,000 in Energy Costs; Reduces Natural Gas Consumption Industrial Technologies Program Case Study Benefits * Implemented...

251

Live Cells Exert 3-Dimensional Traction Forces on Their Substrata  

E-Print Network [OSTI]

The properties of polyacrylamide (PAA) gel were evaluated inon Polyacrylamide Surface PAA deformable substrate wasSigma) was cross-linked with PAA surface by activating N-

Hur, Sung Sik; Zhao, Yihua; Li, Yi-Shuan; Botvinick, Elliot; Chien, Shu

2009-01-01T23:59:59.000Z

252

High-Temperature, Air-Cooled Traction Drive Inverter Packaging  

Broader source: Energy.gov [DOE]

2010 DOE Vehicle Technologies and Hydrogen Programs Annual Merit Review and Peer Evaluation Meeting, June 7-11, 2010 -- Washington D.C.

253

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

254

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.

255

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

256

Microsoft Word - chvs10.html  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (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

257

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 (OSTI)

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

258

Daimler's SuperTruck Program; 50% Brake Thermal Efficiency  

Broader source: Energy.gov [DOE]

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

259

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

260

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

Note: This page contains sample records for the topic "regenerative braking traction" 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

MonthlyReport  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (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)

262

MonthlyReport  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (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)

263

MonthlyReport  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (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)

264

MonthlyReport  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (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)

265

MonthlyReport  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (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)

266

MonthlyReport  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (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)

267

Engines - Emissions Assessment  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (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).

268

Hybrid: Overview  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (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.

269

Hybrid: Overview  

Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (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.

270

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

271

Low-pressure-ratio regenerative exhaust-heated gas turbine  

SciTech Connect (OSTI)

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

272

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.

273

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

274

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

275

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

276

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

277

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

278

Ferrite permanent magnet electrical machine and the application thereof within vehicle traction drives  

SciTech Connect (OSTI)

This patent describes, in combination, a land vehicle having axially aligned ground engaging tractive wheels, and a drivetrain carried by the vehicle for the propulsion thereof. The drivetrain comprises: (a) a substantially fixed DC power source including at least one chemical battery, (b) transmission means including selectable multiple gear ratios, an input shaft and a mechanical differential operative to transfer torque to the wheels, (c) a single-phase self-synchronous permanent magnet motor including, (i) an elongated central shaft, (ii) a generally u-shaped frame assembly adapted for mechanical grounding the shaft to a relatively stationary portion of the vehicle, the shaft being secured to the frame proximate each end thereof, (iii) a stator assembly secured to the shaft and characterized by a plurality of outwardly directed integrally formed salient poles and associated bifilar-wound induction coils, and (iv) a rotor assembly rotatably disposed on the shaft and substantially enclosing the stator assembly, the rotor assembly comprising a cylindrical shell defining an inner surface.

Gritter, D.J.; O'Neil, W.K.; Turner, D.

1987-03-17T23:59:59.000Z

279

Low Latency Hybrid Hardware-in-the-Loop Simulator for Railway Traction System  

E-Print Network [OSTI]

to a virtual plant in the identical way as it is connected to the real plant, such as inverter and electric machine. The virtual plant or the HiL simulator is composed of a real time computation machine (mostly Meng Sun and Joachim Böcker Institute of Power Electronics and Drives University of Paderborn Paderborn

Paderborn, Universität

280

Vehicle Technologies Office Merit Review 2014: Permanent Magnet Development for Automotive Traction Motors  

Broader source: Energy.gov [DOE]

Presentation given by Ames Laboratory at 2014 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Office Annual Merit Review and Peer Evaluation Meeting about permanent magnet development...

Note: This page contains sample records for the topic "regenerative braking traction" 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

Multi-Stage Converters: A New Technology for Traction Drive Juan W. Dixon  

E-Print Network [OSTI]

demonstrated the feasibility to build multi-stage converters for real electric vehicles or electric buses of electric vehicles. On the other hand, the PWM techniques used today to control modern static converters of Electrical Engineering Pontificia Universidad Católica de Chile Felipe Ríos, and Alberto Bretón Department

Catholic University of Chile (Universidad Católica de Chile)

282

Ways to calculate electric fields in traction electric motor insulation by equivalent charge method  

Science Journals Connector (OSTI)

A procedure permitting one to calculate the electric fields in multilayer insulation based on the equivalent charge method is presented. Consideration of the new algorithm shows its fast response and proper ac...

A. V. Kireev; A. Yu. Bakhvalov; S. Yu. Knyazev…

2009-03-01T23:59:59.000Z

283

Fuzzy Logic Traction Controllers And Their Effect On Longitudinal Vehicle Platoon Systems  

E-Print Network [OSTI]

the plant. Figure 27 depicts the fuzzy logic control system.Figure 27: Fuzzy Logic Control System Fuzzification: Duringcontrol makes a fuzzy-logic control approach appealing (

Bauer, M.; Tomizuka, M.

1995-01-01T23:59:59.000Z

284

Omnidirectional locomotion and traction control of the wheel-driven, wall-climbing robot, cromsci  

Science Journals Connector (OSTI)

Safe and cost-efficient inspection of large concrete buildings is a great challenge for mobile robots. This paper presents the locomotion system of the climbing robot, Cromsci, which uses three steerable standard wheels and negative pressure ... Keywords: Control of robotic systems, Force control, Mobile robots, Novel applications of robotics, Service robots

D. Schmidt; C. Hillenbrand; K. Berns

2011-12-01T23:59:59.000Z

285

Advanced Liquid Cooling for a Traction Drive Inverter Using Jet Impingement and Microfinned Enhanced Surfaces: Preprint  

SciTech Connect (OSTI)

Jet impingement on plain and micro-finned enhanced surfaces was compared to a traditional channel flow configuration. The jets provide localized cooling to areas heated by the insulated-gate bipolar transistor and diode devices. Enhanced microfinned surfaces increase surface area and thermal performance. Using lighter materials and designing the fluid path to manage pressure losses increases overall performance while reducing weight, volume, and cost. Powering four diodes in the center power module of the inverter and computational fluid dynamics (CFD) modeling was used to characterize the baseline as well as jet-impingement-based heat exchangers. CFD modeling showed the thermal performance improvements should hold for a fully powered inverter. Increased thermal performance was observed for the jet-impingement configurations when tested at full inverter power (40 to 100 kW output power) on a dynamometer. The reliability of the jets and enhanced surfaces over time was also investigated. Experimentally, the junction-to- coolant thermal resistance was reduced by up to 12.5% for jet impingement on enhanced surfaces s compared to the baseline channel flow configuration. Base plate-to-coolant (convective) resistance was reduced by up to 37.0% for the jet-based configuration compared to the baseline, suggesting that while improvements to the cooling side reduce overall resistance, reducing the passive stack resistance may contribute to lowering overall junction-to-coolant resistance. Full inverter power testing showed reduced thermal resistance from the middle of the module baseplate to coolant of up to 16.5%. Between the improvement in thermal performance and pumping power, the coefficient of performance improved by up to 13% for the jet-based configuration.

Waye, S. K.; Narumanchi, S.; Mihalic, M.; Moreno, G.; Bennion, K.; Jeffers, J.

2014-08-01T23:59:59.000Z

286

High-Temperature High-Power Packaging Techniques for HEV Traction Applications  

SciTech Connect (OSTI)

A key issue associated with the wider adoption of hybrid-electric vehicles (HEV) and plug in hybrid-electric vehicles (PHEV) is the implementation of the power electronic systems that are required in these products [1]. To date, many consumers find the adoption of these technologies problematic based on a financial analysis of the initial cost versus the savings available from reduced fuel consumption. Therefore, one of the primary industry goals is the reduction in the price of these vehicles relative to the cost of traditional gasoline powered vehicles. Part of this cost reduction must come through optimization of the power electronics required by these vehicles. In addition, the efficiency of the systems must be optimized in order to provide the greatest range possible. For some drivers, any reduction in the range associated with a potential HEV or PHEV solution in comparison to a gasoline powered vehicle represents a significant barrier to adoption and the efficiency of the power electronics plays an important role in this range. Likewise, high efficiencies are also important since lost power further complicates the thermal management of these systems. Reliability is also an important concern since most drivers have a high level of comfort with gasoline powered vehicles and are somewhat reluctant to switch to a less proven technology. Reliability problems in the power electronics or associated components could not only cause a high warranty cost to the manufacturer, but may also taint these technologies in the consumer's eyes. A larger vehicle offering in HEVs is another important consideration from a power electronics point of view. A larger vehicle will need more horsepower, or a larger rated drive. In some ways this will be more difficult to implement from a cost and size point of view. Both the packaging of these modules and the thermal management of these systems at competitive price points create significant challenges. One way in which significant cost reduction of these systems could be achieved is through the use of a single coolant loop for both the power electronics as well as the internal combustion engine (ICE) [2]. This change would reduce the complexity of the cooling system which currently relies on two loops to a single loop [3]. However, the current nominal coolant temperature entering these inverters is 65 C [3], whereas a normal ICE coolant temperature would be much higher at approximately 100 C. This change in coolant temperature significantly increases the junction temperatures of the devices and creates a number of challenges for both device fabrication and the assembly of these devices into inverters and converters for HEV and PHEV applications. With this change in mind, significant progress has been made on the use of SiC devices for inverters that can withstand much higher junction temperatures than traditional Si based inverters [4,5,6]. However, a key problem which the single coolant loop and high temperature devices is the effective packaging of these devices and related components into a high temperature inverter. The elevated junction temperatures that exist in these modules are not compatible with reliable inverters based on existing packaging technology. This report seeks to provide a literature survey of high temperature packaging and to highlight the issues related to the implementation of high temperature power electronic modules for HEV and PHEV applications. For purposes of discussion, it will be assumed in this report that 200 C is the targeted maximum junction temperature.

Barlow, F.D.; Elshabini, A.

2006-11-30T23:59:59.000Z

287

Goodyear Tire Plant Gains Traction on Energy Savings After Completing Save Energy Now Assessment (Revised)  

SciTech Connect (OSTI)

This DOE Save Energy Now case study describes how the Goodyear Tire Plant saves approx. 93,000 MMBtu and $875,000 annually after increasing steam system energy efficiency in the Union City, TN, plant.

Not Available

2008-04-01T23:59:59.000Z

288

E-Print Network 3.0 - automotive traction applications Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

54 Spatiotemporal Constraints on the Force-Dependent Growth of Focal Jonathan Stricker, Yvonne Aratyn-Schaus, Patrick W. Oakes, and Margaret L. Gardel* Summary: adhesions...

289

Three-dimensional traction forces of Schwann cells on compliant substrates  

Science Journals Connector (OSTI)

...This provides axons with the required insulation for fast moving, saltatory conduction...of the timelapse experiments to avoid thermal drift. A 40 CFI APO Lambda S water...elasticity directs stem cell lineage specification. Cell 126, 677-689. ( doi:10...

2014-01-01T23:59:59.000Z

290

Utilizing the Traction Drive Power Electronics System to Provide Plug-in Capability for PHEVs  

Broader source: Energy.gov [DOE]

2009 DOE Hydrogen Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting, May 18-22, 2009 -- Washington D.C.

291

A Soft-Switching Inverter for High-Temperature Advanced Hybrid Electric Vehicle Traction Motor Drives  

SciTech Connect (OSTI)

The state-of-the-art hybrid electric vehicles (HEVs) require the inverter cooling system to have a separate loop to avoid power semiconductor junction over temperatures because the engine coolant temperature of 105?C does not allow for much temperature rise in silicon devices. The proposed work is to develop an advanced soft-switching inverter that will eliminate the device switching loss and cut down the power loss so that the inverter can operate at high-temperature conditions while operating at high switching frequencies with small current ripple in low inductance based permanent magnet motors. The proposed tasks also include high-temperature packaging and thermal modeling and simulation to ensure the packaged module can operate at the desired temperature. The developed module will be integrated with the motor and vehicle controller for dynamometer and in-vehicle testing to prove its superiority. This report will describe the detailed technical design of the soft-switching inverters and their test results. The experiments were conducted both in module level for the module conduction and switching characteristics and in inverter level for its efficiency under inductive and dynamometer load conditions. The performance will be compared with the DOE original specification.

None, None

2012-01-31T23:59:59.000Z

292

Investigation of the singular integral and discontinuous traction problems for boundary element three-dimensional elastostatics  

E-Print Network [OSTI]

point. Up to six sub-cells may be required to perform the integration over the complete volume. Integration over each sub-cell is performed by mapping the sub-cell onto a cube in intrinsic coordinates ( q , h , t) ). This technique of evaluating... to two and three-dimensional boundary elements, where the mapping of the pyramidal 10 sub-cell onto a cube translates to the mapping of a triangular element onto a quadrangle in instrinsic coordinates. This transformation has the effect of blowing up...

Awad, Nadim Mansour

2012-06-07T23:59:59.000Z

293

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

294

NREL: Fleet Test and Evaluation - Hydraulic Hybrid Drive Systems  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (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

295

2009 BMW MINI EVAmerica fact sheet.pdf  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (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

296

Microsoft Word - s10.html  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (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

297

How Plug-in Hybrids Save Money  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (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.

298

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

299

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...

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

2014-01-01T23:59:59.000Z

300

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

Note: This page contains sample records for the topic "regenerative braking traction" 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

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

302

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

303

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

304

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

305

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

306

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

307

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

308

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

SciTech Connect (OSTI)

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

309

Stress and displacement fields due to a penny-shaped shear crack with non-uniform traction  

Science Journals Connector (OSTI)

......E-lB(E))jr ) = -- '(", O r McNally 1984). McGarr...penny-shaped shear crack 227 r .o r I.o 0.0 -0...geophys. Muki, R., 1960.Asymmetric-problemsof...Kanamori, H. & McNally, K. C., 1984......

Niu Zhiren

1988-08-01T23:59:59.000Z

310

The Fault Diagnosis of Electric Railway Traction Substation with Model-Based Diagnosis of Integration of FDI and DX Approaches  

Science Journals Connector (OSTI)

Most diagnosis systems used in electric railway substation are expert systems based on experiences, which ... applied to diagnose the electric devices in railway substation. The system model knowledge can be obta...

Zhigang Liu; Zhiwei Han; Wei Zhong

2009-01-01T23:59:59.000Z

311

Full Hybrid: Stopped  

Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (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.

312

Full Hybrid: Starting  

Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (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.

313

Hybrid: Starting  

Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (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.

314

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

315

Cell-Fusion-Mediated Reprogramming: Pluripotency or Transdifferentiation? Implications for Regenerative Medicine  

Science Journals Connector (OSTI)

Cell–cell 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

316

Low-pressure-ratio regenerative exhaust-heated gas turbine. Final report  

SciTech Connect (OSTI)

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

317

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

318

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

319

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

Broader source: Energy.gov [DOE]

The Department of Energy’s 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.

320

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

Note: This page contains sample records for the topic "regenerative braking traction" 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

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

322

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

323

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

324

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

325

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

326

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

327

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

328

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

329

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

330

Carbon Capture by a Continuous, Regenerative Ammonia-Based Scrubbing Process  

SciTech Connect (OSTI)

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

331

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

332

Regenerative zinc/air and zinc/ferricyanide batteries for stationary power applications  

SciTech Connect (OSTI)

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

333

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

334

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 10 wt% 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 10 wt% Cu/(MS) catalyst used in an RCO system reaches over 95% CO2 yields under the heating zone temperature (Tset) = 400 °C, gas velocity (Ug) = 0.37 m/s, isopropyl alcohol (IPA) concentration = 200–400 ppm 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 34.2 °C under various conditions at Tset = 300–450 °C. 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

335

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

336

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

337

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

338

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

339

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

340

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

Note: This page contains sample records for the topic "regenerative braking traction" 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

MonthlyReport  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (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

342

MonthlyReport  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (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

343

How Hybrids Work  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (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

344

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

SciTech Connect (OSTI)

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

345

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

346

Energy efficiency improvement and cost saving opportunities for the Corn Wet Milling Industry: An ENERGY STAR Guide for Energy and Plant Managers  

E-Print Network [OSTI]

process control Regenerative thermal oxidizers Reduction inexhaust gases, regenerative thermal oxidizers (RTO, see RTOsWHE) and a regenerative thermal oxidizer (RTO) (see Section

Galitsky, Christina; Worrell, Ernst; Ruth, Michael

2003-01-01T23:59:59.000Z

347

Energy Efficiency Improvement and Cost Saving Opportunities for the Vehicle Assembly Industry: An ENERGY STAR Guide for Energy and Plant Managers  

E-Print Network [OSTI]

and painting RTOs (regenerative thermal oxidizers). Ford hasenergy use in its regenerative thermal oxidizers by reducinghatches on each regenerative thermal oxidizer (RTO), which

Galitsky, Christina

2008-01-01T23:59:59.000Z

348

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...

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

2014-01-01T23:59:59.000Z

349

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

350

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

SciTech Connect (OSTI)

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

351

aux lignes de force il y a une diffrence de traction de mme gran-deur. 1'I. Quincke a remarqu que, dans le sulfure de carbone,  

E-Print Network [OSTI]

dans l'huile de colza, lavée soigneusement au sulfure de carbone et laissée dans ce liquide pendant 22 tournait de nouveau, mais pendant 2 heures seulement, dans le sulfure de carbone, avec une différence de quart d'heure, méme à 90°. L'auteur a opéré sur les sels suivants : AzH�,Az03 K3FeCy6 KBr (AzH')2 S04

Boyer, Edmond

352

DESCRIPTION OF CYCLES Both a simple cycle and a regenerative cycle were examined; these are described in Fig 1.  

E-Print Network [OSTI]

would be worthwhile only if potential for high thermodynamic efficiency could be shown. METHOD; these are described in Fig 1. Both are high-pressure cycles; that is, compression precedes heat rejection conditions, some of the water vapor will condense in the indoor coil. It was assumed that the condensate

Oak Ridge National Laboratory

353

Large Scale Laser Two-Photon Polymerization Structuring for Fabrication of Artificial Polymeric Scaffolds for Regenerative Medicine  

SciTech Connect (OSTI)

We present a femtosecond Laser Two-Photon Polymerization (LTPP) system of large scale three-dimensional structuring for applications in tissue engineering. The direct laser writing system enables fabrication of artificial polymeric scaffolds over a large area (up to cm in lateral size) with sub-micrometer resolution which could find practical applications in biomedicine and surgery. Yb:KGW femtosecond laser oscillator (Pharos, Light Conversion. Co. Ltd.) is used as an irradiation source (75 fs, 515 nm (frequency doubled), 80 MHz). The sample is mounted on wide range linear motor driven stages having 10 nm sample positioning resolution (XY--ALS130-100, Z--ALS130-50, Aerotech, Inc.). These stages guarantee an overall travelling range of 100 mm into X and Y directions and 50 mm in Z direction and support the linear scanning speed up to 300 mm/s. By moving the sample three-dimensionally the position of laser focus in the photopolymer is changed and one is able to write complex 3D (three-dimensional) structures. An illumination system and CMOS camera enables online process monitoring. Control of all equipment is automated via custom made computer software ''3D-Poli'' specially designed for LTPP applications. Structures can be imported from computer aided design STereoLihography (stl) files or programmed directly. It can be used for rapid LTPP structuring in various photopolymers (SZ2080, AKRE19, PEG-DA-258) which are known to be suitable for bio-applications. Microstructured scaffolds can be produced on different substrates like glass, plastic and metal. In this paper, we present microfabricated polymeric scaffolds over a large area and growing of adult rabbit myogenic stem cells on them. Obtained results show the polymeric scaffolds to be applicable for cell growth practice. It exhibit potential to use it for artificial pericardium in the experimental model in the future.

Malinauskas, M.; Purlys, V.; Zukauskas, A.; Rutkauskas, M.; Danilevicius, P.; Paipulas, D.; Bickauskaite, G.; Gadonas, R.; Piskarskas, A. [Vilnius University, Physics Faculty, Department of Quantum Electronics, Laser Research Center, Sauletekio ave. 10, LT-10223 Vilnius (Lithuania); Bukelskis, L.; Baltriukiene, D.; Bukelskiene, V. [Institute of Biochemistry, Vivarium, Mokslininkuo str. 12, LT-08662 Vilnius (Lithuania); Sirmenis, R. [Vilnius University Hospital Santariskiuo Klinikos, Santariskiuo g. 2, LT-08661 Vilnius (Lithuania); Gaidukeviciute, A. [Institute of Electronic Structure and Laser, Foundation for Research and Technology Hellas, Vassilika Vouton, 711 10 Heraklion, Crete (Greece); Sirvydis, V. [Vilnius University, Faculty of Medicine, Heart Surgery Center, Santariskiuo 2, LT-08661, Vilnius (Lithuania)

2010-11-10T23:59:59.000Z

354

The effect of a modified Nafion binder on the performance of a unitized regenerative fuel cell (URFC)  

Science Journals Connector (OSTI)

Interfacial unstability can be caused by the degradation of interfacial adhesion according to the significant dimensional change of membrane, degradation of membrane, dissolution of catalyst, and ... in the elect...

Ho-Young Jung; Jong-Ho Choi

2012-04-01T23:59:59.000Z

355

Regenerative mode photo electrochemical cells in molten salt electrolytes. 1st four monthly report (1/31/80)  

SciTech Connect (OSTI)

The most promising photoelectrodes selected for use in the butyl pyridinium chloride-aluminum chloride room temperature molten salt are n-type silicon, gallium arsenide and cadmium telluride. The solubilities of these semiconductors are low, and their conduction and valence band edges are favorably located. Cadmium selenide and sulfide showed significant solubility in the melt, and the conduction band edge for p-type cadmium telluride was too close to the aluminum deposition potential. Several reversible redox couples have been identified, which could potentially be used in a photoelectrochemical cell. These include W/sup 5 +//W/sup 6 +/ and Eu/sup 2 +//Eu/sup 3 +/ as well as ferrocene and its derivatives.

Not Available

1980-01-01T23:59:59.000Z

356

Batch Coffee Roasting; Roasting Energy Use; Reducing That Use  

Science Journals Connector (OSTI)

Regenerative thermal oxidizers (RTOs) use regenerative heat exchange to heat afterburner feeds from T GO to appropriate T ...

Henry Schwartzberg

2013-01-01T23:59:59.000Z

357

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

SciTech Connect (OSTI)

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

358

Diary of Societies  

Science Journals Connector (OSTI)

... . Poynder: Some Practical Considerations in the Design of the Automatic Equipments for Heavy Traction Substations.

1928-01-28T23:59:59.000Z

359

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

360

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

Broader source: All U.S. Department of Energy (DOE) Office Webpages (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...

Note: This page contains sample records for the topic "regenerative braking traction" 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

Advanced Aerodynamic Devices to Improve the Performance, Economics, Handling, and Safety of Heavy Vehicles  

SciTech Connect (OSTI)

Research is being conducted at the Georgia Tech Research Institute (GTRI) to develop advanced aerodynamic devices to improve the performance, economics, stability, handling and safety of operation of Heavy Vehicles by using previously-developed and flight-tested pneumatic (blown) aircraft technology. Recent wind-tunnel investigations of a generic Heavy Vehicle model with blowing slots on both the leading and trailing edges of the trailer have been conducted under contract to the DOE Office of Heavy Vehicle Technologies. These experimental results show overall aerodynamic drag reductions on the Pneumatic Heavy Vehicle of 50% using only 1 psig blowing pressure in the plenums, and over 80% drag reductions if additional blowing air were available. Additionally, an increase in drag force for braking was confirmed by blowing different slots. Lift coefficient was increased for rolling resistance reduction by blowing only the top slot, while downforce was produced for traction increase by blowing only the bottom. Also, side force and yawing moment were generated on either side of the vehicle, and directional stability was restored by blowing the appropriate side slot. These experimental results and the predicted full-scale payoffs are presented in this paper, as is a discussion of additional applications to conventional commercial autos, buses, motor homes, and Sport Utility Vehicles.

Robert J. Englar

2001-05-14T23:59:59.000Z

362

Use of Fault Tree Analysis for Automotive Reliability and Safety Analysis  

SciTech Connect (OSTI)

Fault tree analysis (FTA) evolved from the aerospace industry in the 1960's. A fault tree is deductive logic model that is generated with a top undesired event in mind. FTA answers the question, ''how can something occur?'' as opposed to failure modes and effects analysis (FMEA) that is inductive and answers the question, ''what if?'' FTA is used in risk, reliability and safety assessments. FTA is currently being used by several industries such as nuclear power and chemical processing. Typically the automotive industries uses failure modes and effects analysis (FMEA) such as design FMEAs and process FMEAs. The use of FTA has spread to the automotive industry. This paper discusses the use of FTA for automotive applications. With the addition automotive electronics for various applications in systems such as engine/power control, cruise control and braking/traction, FTA is well suited to address failure modes within these systems. FTA can determine the importance of these failure modes from various perspectives such as cost, reliability and safety. A fault tree analysis of a car starting system is presented as an example.

Lambert, H

2003-09-24T23:59:59.000Z

363

An improved energy management strategy for FC/UC hybrid electric vehicles propelled by motor-wheels  

Science Journals Connector (OSTI)

Abstract The hybridization of the fuel-cell electric-vehicle (FCEV) by a second energy source has the advantage of improving the system's dynamic response and efficiency. Indeed, an ultra-capacitor (UC) system used as an energy storage device fulfills the FC slowest dynamics during fast power transitions and recovers the braking energy. In FC/UC hybrid vehicles, the search for a suitable power management approach is one of the main objectives. In this paper, an improved control strategy managing the active power distribution between the two energy sources is proposed. The UC reference power is calculated through the DC link voltage regulation. For the FC power demand, an algorithm with five operating modes is developed. This algorithm, depending on the UC state of charge (SOC) and the vehicle speed level, minimizes the FC power demand transitions and therefore ameliorates its durability. The traction power is provided using two permanent magnetic synchronous motor-wheels to free more space in the vehicle. The models of the FC/UC vehicle system parts and the control strategy are developed using MATLAB software. Simulation results show the effectiveness of the proposed energy management strategy.

Islem Lachhab; Lotfi Krichen

2014-01-01T23:59:59.000Z

364

Is Nanotechnology the Key to Unravel and Engineer Biological Processes?  

Science Journals Connector (OSTI)

Regenerative medicine is an emerging field aiming to the ... regenerative process take place at subcellular scale. Nanotechnology provides the tools and technology not only ... guide the regenerative process. The...

Melba Navarro; Josep A. Planell

2012-01-01T23:59:59.000Z

365

Temperature-memory polymer actuators  

Science Journals Connector (OSTI)

...Regenerative Therapies, Helmholtz-Zentrum Geesthacht, 14513 Teltow, GermanyInstitute of...Regenerative Therapies, Helmholtz-Zentrum Geesthacht, 14513 Teltow, GermanyInstitute of...Regenerative Therapies, Helmholtz-Zentrum Geesthacht, 14513 Teltow, GermanyInstitute of...

Marc Behl; Karl Kratz; Ulrich Noechel; Tilman Sauter; Andreas Lendlein

2013-01-01T23:59:59.000Z

366

Regenerative process for removal of mercury and other heavy metals from gases containing H.sub.2 and/or CO  

DOE Patents [OSTI]

A method for removal of mercury from a gaseous stream containing the mercury, hydrogen and/or CO, and hydrogen sulfide and/or carbonyl sulfide in which a dispersed Cu-containing sorbent is contacted with the gaseous stream at a temperature in the range of about 25.degree. C. to about 300.degree. C. until the sorbent is spent. The spent sorbent is contacted with a desorbing gaseous stream at a temperature equal to or higher than the temperature at which the mercury adsorption is carried out, producing a regenerated sorbent and an exhaust gas comprising released mercury. The released mercury in the exhaust gas is captured using a high-capacity sorbent, such as sulfur-impregnated activated carbon, at a temperature less than about 100.degree. C. The regenerated sorbent may then be used to capture additional mercury from the mercury-containing gaseous stream.

Jadhav, Raja A. (Naperville, IL)

2009-07-07T23:59:59.000Z

367

Taking a deep look: modern microscopy technologies to optimize the design and functionality of biocompatible scaffolds for tissue engineering in regenerative medicine  

Science Journals Connector (OSTI)

...J. Biomed. Mater. Res. B 100, 1782-1791. ( doi:10.1002/jbm.b.32745 ) 47 Hockaday, LA , 2012 Rapid 3D printing of anatomically accurate and mechanically heterogeneous aortic valve hydrogel scaffolds. Biofabrication 4, 035005...

2013-01-01T23:59:59.000Z

368

Living Bacterial Sacrificial Porogens to Engineer Decellularized Porous Scaffolds  

E-Print Network [OSTI]

Decellularization and cellularization of organs have emerged as disruptive methods in tissue engineering and regenerative medicine. Porous hydrogel scaffolds have widespread applications in tissue engineering, regenerative ...

Xu, Feng

369

Engineering extracellular matrix through nanotechnology  

Science Journals Connector (OSTI)

...regenerative medicines' Organized...matrix through nanotechnology Cassandra...interest in this nanotechnology for regenerative medicine applications...matrix through nanotechnology. | The goal...twentieth century medicine, science...

2010-01-01T23:59:59.000Z

370

Report No. 3408 Revised To: Executive Committee of Faculty Council  

E-Print Network [OSTI]

Engineering and Regenerative Medicine 3) Nanotechnology, Molecular Imaging and Systems Biology 4) Engineering 2. Biomaterials, Tissue Engineering and Regenerative Medicine 3. Nanotechnology, Molecular Imaging

Prodiæ, Aleksandar

371

Analytical framework for the smooth manoeuvre of wheeled mobile robots traversing obstacles  

Science Journals Connector (OSTI)

...the smooth manoeuvre of wheeled mobile robots traversing obstacles S. O. Oyadiji...model the dynamics of wheeled mobile robots (WMRs), which need to travel...characteristics of a traction surface. mobile robots|temporal trajectory|traction...

2005-01-01T23:59:59.000Z

372

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

373

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

374

An Optimization Model for Plug-In Hybrid Electric Vehicles  

SciTech Connect (OSTI)

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

375

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

SciTech Connect (OSTI)

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

376

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

377

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

378

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

SciTech Connect (OSTI)

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

379

Research Councils UK Research funded by the  

E-Print Network [OSTI]

biology; Regenerative medicine; Agri-science; Advanced materials and nanotechnology; and Energy and its

Berzins, M.

380

Data Collection for Improved Cold Temperature Thermal Modeling  

Broader source: Energy.gov (indexed) [DOE]

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...

Note: This page contains sample records for the topic "regenerative braking traction" from the National Library of EnergyBeta (NLEBeta).
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We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Oxygen-Enriched Combustion for Military Diesel Engine Generators  

Broader source: Energy.gov [DOE]

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

382

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.

383

Heavy-duty H2-Diesel Dual Fuel Engines  

Broader source: Energy.gov [DOE]

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

384

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

385

CMVRTC: Overweight Vehicle  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (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

386

This is a 1D model of an active magnetic regenerative refrigerator (AMRR) that was developed in MATLAB. The model uses cycle inputs such as the fluid mass flow and  

E-Print Network [OSTI]

in MATLAB. The model uses cycle inputs such as the fluid mass flow and magnetic field profiles, fluid

Wisconsin at Madison, University of

387

Download  

Science Journals Connector (OSTI)

Jul 16, 1973 ... traction requires a sequence of solvents and, for a large number of samples, ... unlabeled red, brown, and green marine algae and eel grass for ...

388

E-Print Network 3.0 - advisory capability arac Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

A part-task human Source: NASA - Center-TRACTION Automation System (CTAS) Collection: Energy Storage, Conversion and Utilization 79 Prior Probability Model Development to...

389

E-Print Network 3.0 - assessment system edas Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Navigation System ... Source: NASA - Center-TRACTION Automation System (CTAS) Collection: Energy Storage, Conversion and Utilization 25 Evacuation Planning via Evolutionary...

390

E-Print Network 3.0 - airspace flight network Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

flight rules (IFR... ) flight plan. Class B airspace is generally the ... Source: NASA - Center-TRACTION Automation System (CTAS) Collection: Energy Storage, Conversion and...

391

E-Print Network 3.0 - airborne strategic conflict Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

. A., Karr, D. A., Roscoe, D. A., Pattern-Based Genetic Algorithm for ... Source: NASA - Center-TRACTION Automation System (CTAS) Collection: Energy Storage, Conversion and...

392

E-Print Network 3.0 - aircraft transportation system Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

from approximately 5 to 20 aircraft. Condition one consisted solely of this ... Source: NASA - Center-TRACTION Automation System (CTAS) Collection: Energy Storage, Conversion and...

393

E-Print Network 3.0 - aircraft conflict resolution Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

that it work with the current aircraft conflict resolution... and aircraft ... Source: NASA - Center-TRACTION Automation System (CTAS) Collection: Energy Storage, Conversion and...

394

E-Print Network 3.0 - airspace chicago il Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

conditions, this paper assessed Flexible Airspace Management that reconfigures Source: NASA - Center-TRACTION Automation System (CTAS) Collection: Energy Storage, Conversion and...

395

E-Print Network 3.0 - aircraft maintenance equipment Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

stream of aircraft Source: NASA - Center-TRACTION Automation System (CTAS) Collection: Energy Storage, Conversion and Utilization 35 Disruption Management in the Airline Industry...

396

A Component Evaluation Tool from the Vehicle System Perspective  

Broader source: Energy.gov (indexed) [DOE]

Testbed) is a Modular Hybrid Test Environment for Component Evaluation Emulated electric traction system: *Battery pack simulated *Motor-inverter emulated *Physical motor...

397

Numerical Modeling of the Nucleation Conditions of Petal-Centerline...  

Open Energy Info (EERE)

analysis revealed that outward directed traction boundary conditions on the borehole surface including weight on bit and excess drilling mud pressure suppress tensile stress...

398

Sustainability and Transport  

E-Print Network [OSTI]

traction powered from renewable resources. References ASPO.to absorb them, uses renewable resources at or below theireration, and, uses non-renewable resources at or below the

Gilbert, Richard

2006-01-01T23:59:59.000Z

399

E-Print Network 3.0 - acar adaptive connectivity Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

non-intrusive, integrated FMS- ACARS capability. The aircraft comes equipped with a Honeywell Source: NASA - Center-TRACTION Automation System (CTAS) Collection: Energy Storage,...

400

E-Print Network 3.0 - alternatives study ctas Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Ratings... ... Source: NASA - Center-TRACTION Automation System (CTAS) Collection: Energy Storage, Conversion and Utilization 7 A Simulation Study of TCP over the IEEE...

Note: This page contains sample records for the topic "regenerative braking traction" 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

E-Print Network 3.0 - air taxi pilots Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

for ... Source: NASA - Center-TRACTION Automation System (CTAS) Collection: Energy Storage, Conversion and Utilization 8 Airspace Management Decision Tool Validating...

402

E-Print Network 3.0 - aircraft spacing system Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

of the decision ... Source: NASA - Center-TRACTION Automation System (CTAS) Collection: Energy Storage, Conversion and Utilization 3 TAl -1 1:00 SIMULATION OF TIME-CONTROL...

403

E-Print Network 3.0 - airspace utilization Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

to airspace 10 ... Source: NASA - Center-TRACTION Automation System (CTAS) Collection: Energy Storage, Conversion and Utilization 6 Maximum Flow Rates for Capacity Estimation in...

404

E-Print Network 3.0 - aircraft system identification Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

of a method ... Source: NASA - Center-TRACTION Automation System (CTAS) Collection: Energy Storage, Conversion and Utilization 2 Published at the 13th IFAC Symposium on...

405

power electronics and machines | netl.doe.gov  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Advanced Power Electronics and Electrical Machines Improvements in electric traction drives are essential to electric drive vehicles, and have the potential to significantly reduce...

406

"The Waters . . . Belong To The People": Populist Victory Over Big Business and Progressive Federal Policy in the Nevada Water Law of 1913  

E-Print Network [OSTI]

James Watt invented a steam engine with a separate condenseras the invention of the steam engine and a valid alternativebut practical, steam-powered traction engines, or tractors,

McFarlane, Richard Alan

2011-01-01T23:59:59.000Z

407

Type B Accident Investigation Bechtel Jacobs Company LLC Subcontractor...  

Broader source: Energy.gov (indexed) [DOE]

equipment (PPE) consisted of work clothes, tyvek suit with booties and hood, steel-toed boots, disposable shoe scuffs with a traction bottom surface, full-face powered...

408

E-Print Network 3.0 - applications reduce phytophagy Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

inherent stoichiometric mismatch by concentrating their feeding on other... - tages of EOD are reduced handling time, increased ex- traction rate of nutrients, and an increase......

409

E-Print Network 3.0 - aircraft crew dosimetry Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

bars and markers ... Source: NASA - Center-TRACTION Automation System (CTAS) Collection: Energy Storage, Conversion and Utilization 13 SENSITIVITY ANALYSIS TO THE COST OF DELAY...

410

E-Print Network 3.0 - aasta parim multifilm Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Parimal can Source: NASA - Center-TRACTION Automation System (CTAS) Collection: Energy Storage, Conversion and Utilization 9 Sensitive detection of ultra-weak adhesion...

411

E-Print Network 3.0 - aasta parim sjastrateegia Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Parimal can Source: NASA - Center-TRACTION Automation System (CTAS) Collection: Energy Storage, Conversion and Utilization 7 Children's Literature Exemplary Illustration...

412

E-Print Network 3.0 - aircraft impact dynamics Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

is not uniform ... Source: NASA - Center-TRACTION Automation System (CTAS) Collection: Energy Storage, Conversion and Utilization 2 Eighth USAEurope Air Traffic Management...

413

E-Print Network 3.0 - aircraft carrier program Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

of aircraft. NASA Source: NASA - Center-TRACTION Automation System (CTAS) Collection: Energy Storage, Conversion and Utilization 4 AIAA 2008-7835 Selection of a Carrier...

414

E-Print Network 3.0 - automated aircraft conflict Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Automation System ... Source: NASA - Center-TRACTION Automation System (CTAS) Collection: Energy Storage, Conversion and Utilization 2 Eighth USAEurope Air Traffic Management...

415

Y-12 and the 2000 decade ? Modernization to Transformation,...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

"Two moderate level line item projects were proposed, Quality Evaluation Relocation and Depleted Uranium Upgrades, but could never get funding traction. Realizing the benefits of...

416

CX-006974: Categorical Exclusion Determination | Department of...  

Broader source: Energy.gov (indexed) [DOE]

Fully-Integrated Automotive Traction Inverter with Real-Time Switching Optimization CX(s) Applied: B3.6 Date: 09262011 Location(s): Colorado, Massachusetts,...

417

Electro-Thermal Dynamics and the Effects of Generalized Discontinuous Pulse Width Modulation Algorithms on High Performance Variable Frequency Drives.  

E-Print Network [OSTI]

??This thesis is concerned with issues observed with the variable frequency drive, VFD, traction inverter used in the Buckeye Bullet 3 as it performed during… (more)

Krohn, Austin Bengoechea

2014-01-01T23:59:59.000Z

418

Advanced Power Electronics and Electric Motors (APEEM) R&D Program...  

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

enable market success: increase performance, efficiency and reliability, while lowering cost, weight, and volume Integrated Traction Drive System Concept 54% 22% 13% 11% FY 2013...

419

Vehicle Technologies Office: 2013 Advanced Power Electronics...  

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

technologies now under development. Research is focused on developing revolutionary new power electronics (PE), electric motor, and traction drive system (TDS) technologies that...

420

E-Print Network 3.0 - accelerated flight part Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

3(a) shows a ... Source: NASA - Center-TRACTION Automation System (CTAS) Collection: Energy Storage, Conversion and Utilization 9 Flap-bounding flight consists of flapping phases...

Note: This page contains sample records for the topic "regenerative braking traction" 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

E-Print Network 3.0 - active vortex generators Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

flow field of ... Source: NASA - Center-TRACTION Automation System (CTAS) Collection: Energy Storage, Conversion and Utilization 7 A New Look at Stratospheric Sudden Warmings....

422

Collge doctoral ED n 432 : Sciences des Mtiers de l'Ingnieur  

E-Print Network [OSTI]

'examinateur. Merci à Bernard Simon, Ingénieur de recherche à la SAFT (Société des Accumulateurs Fixes et de Traction

Boyer, Edmond

423

Modulating cell behavior with engineered HER-receptor ligands  

E-Print Network [OSTI]

The primary motivation for this work is the manipulation of EGFR family signaling to influence regenerative responses of mesenchymal stem cells (MSC). Underlying the potential of regenerative medicine is the need to ...

Alvarez, Luis M. (Luis Manuel)

2009-01-01T23:59:59.000Z

424

Introduction to cell–hydrogel mechanosensing  

Science Journals Connector (OSTI)

...tissue engineering and regenerative medicine: present status and some moving trends...for tissue engineering applications. Nanotechnology 23, 095705. ( doi:10.1088/0957-4484...and carbon nanotubes in regenerative medicine. Adv. Drug Deliv. Rev. 61, 1097-1114...

2014-01-01T23:59:59.000Z

425

Designing nanostructured block copolymer surfaces to control protein adhesion  

Science Journals Connector (OSTI)

...R. Pareta, and T. J. Webster 2008 Nanotechnology for regenerative medicine. Biomed. Microdevices 12, 575-587...Lacroix, and J. A. Planell 2008 Nanotechnology in regenerative medicine: the materials side. Trends Biotechnol...

2012-01-01T23:59:59.000Z

426

Magnetic poly(?-caprolactone)/iron-doped hydroxyapatite nanocomposite substrates for advanced bone tissue engineering  

Science Journals Connector (OSTI)

...Italy 3 International Iberian Nanotechnology Laboratory (INL), , Braga...transduction, describing a magnetic nanotechnology that activates a biochemical...engineering and regenerative medicine [34]. Magnetically actuable...the field of regenerative medicine [38]. A superparamagnetic-like...

2013-01-01T23:59:59.000Z

427

Directed evolution of bacteriorhodopsin for applications in bioelectronics  

Science Journals Connector (OSTI)

...in and applications of nanotechnology to biological problems...20] and regenerative medicine [21,22]. This review...biomaterials for regenerative medicine. In Nanotechnology in regerenative medicine: methods and protocols...

2013-01-01T23:59:59.000Z

428

Investigation of early cell–surface interactions of human mesenchymal stem cells on nanopatterned ?-type titanium–niobium alloy surfaces  

Science Journals Connector (OSTI)

...undesired for further use in regenerative medicine because it accounts for senescent and...biological material in regenerative medicine, it is important to guarantee a high...copolymer micelle nanolithography. Nanotechnology 14, 1153-1160. ( doi:10.1088...

2014-01-01T23:59:59.000Z

429

Nanobiomechanics of living materials  

Science Journals Connector (OSTI)

...engineering to biology and medicine-it is thus rendered more...importantly, biomechanics, nanotechnology, instrumentation, and cell...engineering and regenerative medicine [6]. Hence, the research...engineering and regenerative medicine strategies. In this important...

2014-01-01T23:59:59.000Z

430

Human endothelial stem/progenitor cells, angiogenic factors and vascular repair  

Science Journals Connector (OSTI)

...issue 'Translation and commercialization of regenerative medicines...but also for pathological processes, such as tumour development...Supplement Translation and commercialization of regenerative medicines...cells in the neoangiogenic process? Biochim. Biophys. Acta...

2010-01-01T23:59:59.000Z

431

Experimental: Gel Electrolyte The gel mixtures were designed to be cast as  

E-Print Network [OSTI]

PEDOT:PSS as counter electrode, which demonstrated good Iodine regenerative catalytic activity .[2] www.risoe.dk/solarcells

432

Controlled nanostructures for enhanced biological responses and release of incorporated biomolecules  

E-Print Network [OSTI]

Nanotechnology in tissue engineering and regenerative medicine."medicine requires selective differentiation. In the Jin Lab, recent studies on nanotechnology

Brammer, Karla Sue

2011-01-01T23:59:59.000Z

433

E-Print Network 3.0 - antioxidant therapeutic options Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

biomaterials for applications in regenerative medicine" Summary: for improved wound repair, targeted polymers for preventing post surgical adhesion formation and...

434

CMVRTC: Past Research  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (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 ... )

435

Impurity-induced van der Waals transition during decohesion A. Van der Ven and G. Ceder  

E-Print Network [OSTI]

of Materials Science and Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge- acterizing the crack region is embedded in a solid described by continuum plasticity.3,4 The traction curve is on the details of modification of the traction curve by mobile impurities. It has long been known that impurities

Ceder, Gerbrand

436

Tribological behavior of some candidate advanced space lubricants  

SciTech Connect (OSTI)

Performance of a variety of space lubricants was compared under boundary and elastohydrodynamic lubrication (EHL). The types of fluids studied were naphthenic mineral oil, paraffinic mineral oil, polyalphaolefin, and silahydrocarbon. The silahydrocarbon and the polyalphaolefin lubricants exhibited lower traction under similar conditions. A specific additive package increased the traction of the polyalphaolefin. Volatility characteristics of some of these fluids were also studied. 10 refs.

Sharma, S.K.; Snyder, C.E. Jr.; Gschwender, L.J. (USAF, Wright Lab., Wright-Patterson AFB, OH (United States))

1993-04-01T23:59:59.000Z

437

Rectifiers used on the London Underground Railways  

Science Journals Connector (OSTI)

... Lunn to the Institution of Electrical Engftieers on November 7, a description of the rectifier substations is given and also much useful information of the working of these rectifiers for traction ... there is little vibration; but in these respects the rectifier is much superior. The substation buildings for operating the traction system of the London Underground are in very densely populated ...

1935-11-30T23:59:59.000Z

438

brief communications nature methods | VOL.11 NO.12 | DECEMBER2014 | 1229  

E-Print Network [OSTI]

these limitations, we engineered a new class of molecular TPs that spatiotemporally report traction forces to a substrate through TPs, TP fluorescence enables the reversible, optical measurement of cell traction forces with otherwise similar sequences16 (Fig. 1b). Single TPs were attached to DNA handles and held in a `dumbbell

Cai, Long

439

CX-002146: Categorical Exclusion Determination | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

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

440

CMVRTC: PBBT  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (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)

Note: This page contains sample records for the topic "regenerative braking traction" 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

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

442

E-Print Network 3.0 - arsenic additions Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (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...

443

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...

444

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...

445

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....

446

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...

447

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.

448

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...

449

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

Broader source: Energy.gov (indexed) [DOE]

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,...

450

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.

451

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

Broader source: All U.S. Department of Energy (DOE) Office Webpages (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...

452

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

Broader source: Energy.gov (indexed) [DOE]

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

453

Data Collection for Improved Cold Temperature Thermal Modeling...  

Broader source: Energy.gov (indexed) [DOE]

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

454

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...

455

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

456

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

457

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

458

The hypothalamic–pituitary–adrenal–leptin 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

459

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

460

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

Note: This page contains sample records for the topic "regenerative braking traction" 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

E-Print Network 3.0 - advanced rankine cycle Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

two-tank molten... C. Figure 6. Temperature-entropy diagram for a reheat-regenerative subcritical ... Source: Australian National University, Department of Engineering, Solar...

462

CX-001922: Categorical Exclusion Determination | Department of...  

Broader source: Energy.gov (indexed) [DOE]

22: Categorical Exclusion Determination CX-001922: Categorical Exclusion Determination Biogas to Regenerative Thermal Oxidizer CX(s) Applied: B2.5, B5.1 Date: 03312010...

463

Experimentell gestütztes Kennzahlmodell zur Beschreibung des Betriebsverhaltens trockenlaufender Schrauben-Expansionsmaschinen in Kreisprozessen  

Science Journals Connector (OSTI)

Ein unverzichtbarer Bestandteil neuer Energiekonzepte ist die regenerative Nutzung von Wärmequellen niedrigen Exergiegehalts. Die für den verlustfreien Idealfall zu erwartenden geringen Carnot-Wirkungsgrade la...

Dipl.-Ing. Gert Hinsenkamp; Dr.-Ing. Ulrich Willibald…

1992-01-01T23:59:59.000Z

464

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

Broader source: Energy.gov (indexed) [DOE]

conjunction with PSU, proposes to investigate the use of regenerative cooling for natural gas power generation turbomachinery to allow operation at higher pressures and...

465

Download Full-text PDF  

Science Journals Connector (OSTI)

rubber stoppers, mixed with a magnetic stirrer, and incubated ...... Science. 270: 623–625. KLUMP, J. V., AND C. S. MARTENS. 1983. Benthic nitrogen regen-.

2001-06-18T23:59:59.000Z

466

E-Print Network 3.0 - artery disease potential Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

peripheral arterial disease, enhancement of stem cell therapies... -assembly code that led to these artificial extracellular matrices and their potential use in regenerative......

467

Foundations 6% Federal 49%  

E-Print Network [OSTI]

California Department of Education California Department of Fish and Game California Department of Justice California DHHS Tobacco Control Program California Institute for Regenerative Medicine California Seismic

Ponce, V. Miguel

468

10 Sponsors Federal Agencies  

E-Print Network [OSTI]

California Department of Developmental Services California Department of Fish and Game California Department for Regenerative Medicine California Office of Historic Preservation California Seismic Safety Commission City

Ponce, V. Miguel

469

CX-010856: Categorical Exclusion Determination | Department of...  

Broader source: Energy.gov (indexed) [DOE]

cells such as sulfur dioxide depolarized electrolyzer, unitized regenerative fuel cells, fuel cells, or batteries. Major activities include synthesis, manufacture, and performing...

470

E-Print Network 3.0 - androgen receptor-mediated apoptosis Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Biology and Medicine ; Renewable Energy 31 Improved Cancer Risk Assessment Using Text Mining Name Mode of Action Precision Summary: Cytotoxicity Regeneration Regenerative DNA...

471

Maass Prim Sola | Open Energy Information  

Open Energy Info (EERE)

Prim Sola Jump to: navigation, search Name: Maass Prim Sola Place: China Sector: Solar Product: Joint venture between Maass Regenerative Energien and Prim Sola to secure the...

472

E-Print Network 3.0 - antioxidants Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

biomaterials for applications in regenerative medicine" Summary: for improved wound repair, targeted polymers for preventing post surgical adhesion formation and antioxidant...

473

Catalyst immobilization techniques for continuous flow synthesis  

E-Print Network [OSTI]

Catalytic processes are ubiquitous in both research and industrial settings. As continuous flow processes continue to gain traction in research labs and fine and pharmaceutical chemical processes, new opportunities exist ...

Nagy, Kevin David

2012-01-01T23:59:59.000Z

474

Investigation of injection-induced seismicity using a coupled fluid ...  

E-Print Network [OSTI]

Matrix of sliding to shear traction interaction coefficients f0. Nominal .... freeware Matlab code XSteam 2.6 by Magnus Holmgren (2007). A microseismic ...... with formulas, graphs, and mathematical tables: U. S. Government Print- ing Office.

2012-01-23T23:59:59.000Z

475

Notes  

Science Journals Connector (OSTI)

... traction from a sanitary point of view is probably admitted by everyone, and certainly the electric car would afford the best solution. Mr. Joel is of opinion that there is a ...

1903-01-29T23:59:59.000Z

476

100 and 50 years ago  

Science Journals Connector (OSTI)

... traction from a sanitary point of view is probably admitted by everyone, and certainly the electric car would afford the best solution. Mr. Joel is of opinion that there is a ...

2003-01-30T23:59:59.000Z

477

Development of an 800-V Electric Car with Rear-Wheel Drive  

Science Journals Connector (OSTI)

Increasing the voltage level in the traction power network is an evident and reasonable development step in producing sporty and powerful electric cars. Therefore, the engineers at AVL are ... with 1200-V IGBT te...

Dr.-Ing. Armin Engstle; Dipl.-Ing. Mathias Deiml…

2012-07-01T23:59:59.000Z

478

17' Anne (Tome XXVIl). Septembre;.Octobre 1947 REVUE GNRALE DES QUESTIONS LAITIRES  

E-Print Network [OSTI]

'ac- .i.ion' des ferments lactiques thermôphiles, un~ rétraction (synérèse) 'QU caillé à l'intérieur des

Boyer, Edmond

479

APIC'95, El Paso, Extended Abstracts, A Supplement to the international journal of Reliable Computing 1 Aerodynamic Aids to Vehicle Stability  

E-Print Network [OSTI]

Computing 1 Aerodynamic Aids to Vehicle Stability R. Bell Abstract--- Modern race cars utilize vari­ ous aerodynamic devices to increase stability, and traction. There is a considerable body of information available

Kreinovich, Vladik

480

Download  

Science Journals Connector (OSTI)

Nov 26, 1984 ... The rates of DMS production in the water column and its flux into the atmosphere across the ... traction methods are described in detail by. Froelich et al. (1983). ..... tion of hydrogen sulfide in natural waters. Limnol. Oceanogr.

2000-02-22T23:59:59.000Z

Note: This page contains sample records for the topic "regenerative braking traction" 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

Tactical urbanism, public policy reform, and 'innovation spotting' by government : from Park(ing) Day to San Francisco's parklet program  

E-Print Network [OSTI]

This thesis examines the prospects and impacts of tactical urbanism (TU). While tactical urbanism remains primarily a subcultural movement, it is beginning to gain traction in popular culture in traditionally politically ...

Davidson, Mariko Mura

2013-01-01T23:59:59.000Z

482

Advanced Methods Approach to Hybrid Powertrain Systems Optimization of a Transit Bus Application  

Broader source: Energy.gov [DOE]

Design refinements of the GTB-40 mass-transit bus include new optimization processes, subsystem, and powertrain system requirements along with traction motor, battery, and APU development and integration

483

Electric transmission based on the switched reluctance motor with independent excitation  

Science Journals Connector (OSTI)

The prospects and experience of using a switched reluctance motor with independent external excitation for a traction electric motor are discussed. The possibility of regulating the excitation allows the motor to...

V. F. Kozachenko; V. N. Ostrirov; M. M. Lashkevich

2014-02-01T23:59:59.000Z

484

Markets versus Regulation: The Efficiency and Distributional Impacts of U.S. Climate Policy Proposals  

E-Print Network [OSTI]

Regulatory measures have proven the favored approach to climate change mitigation in the U.S., while market-based policies have gained little traction. Using a model that resolves the U.S. economy by region, income category, ...

Rausch, S.

485

Vehicle Technologies Office Merit Review 2014: Advanced Low-Cost...  

Broader source: Energy.gov (indexed) [DOE]

Advanced Low-Cost SiC and GaN Wide Bandgap Inverters for Under-the-Hood Electric Vehicle Traction Drives Vehicle Technologies Office Merit Review 2014: Advanced Low-Cost SiC and...

486

Efficiency Improvement of an IPMSM using Maximum Efficiency Operating Strategy  

E-Print Network [OSTI]

, Joachim Böcker Paderborn University Department of Power Electronics and Electrical Drives 33095 Paderborn ma- chines (IPMSM) are preferably used for traction drives in electric vehicles in the machine control. Keywords-- Automotive application, Control of Drive, Electrical Drive, Efficiency

Paderborn, Universität

487

Electrification of powertrain systems — battery, fuel cell or both?  

Science Journals Connector (OSTI)

The increasing electrification of powertrain systems is driven by the idea of using electric power as an alternative energy source. Fuel cells combined with electric traction are one example. Batteries will have ...

Dr.-Ing. Wolfgang Steiger; Dr.-Ing. Ingo Scholz…

2008-05-01T23:59:59.000Z

488

Non-Aqueous Battery Systems  

Science Journals Connector (OSTI)

...0 V. Practical non-aqueous batteries have energies extending from 100...electric watches to 20 kWh secondary batteries being developed for vehicle traction...10 years, to a military lithium thermal battery delivering all of its energy in...

1996-01-01T23:59:59.000Z

489

Advanced battery thermal management for electrical-drive vehicles using reciprocating cooling flow and spatial-resolution, lumped-capacitance thermal model.  

E-Print Network [OSTI]

?? The thermal management of traction battery systems for electrical-drive vehicles directly affects vehicle dynamic performance, long-term durability and cost of the battery systems. The… (more)

Mahamud, Rajib

2011-01-01T23:59:59.000Z

490

Rechargeable lithium battery energy storage systems for vehicular applications.  

E-Print Network [OSTI]

??Batteries are used on-board vehicles for broadly two applications – starting-lighting-ignition (SLI) and vehicle traction. This thesis examines the suitability of the rechargeable lithium battery… (more)

HURIA, TARUN

2012-01-01T23:59:59.000Z

491

Nonflammable perfluoropolyether-based electrolytes for lithium batteries  

Science Journals Connector (OSTI)

...to power zero-emission electric vehicles, but they currently are gaining traction as backup power in aircraft and smart grid applications (3, 4). The electrolyte used in these batteries, however, hinders their use in large-scale applications...

Dominica H. C. Wong; Jacob L. Thelen; Yanbao Fu; Didier Devaux; Ashish A. Pandya; Vincent S. Battaglia; Nitash P. Balsara; Joseph M. DeSimone

2014-01-01T23:59:59.000Z

492

Measuring pesticide ecological and health risks in West African agriculture to establish an enabling environment for sustainable intensification  

Science Journals Connector (OSTI)

...in the environment. Risk is a function of the maximum acceptable toxicant concentration...can be used without undue risk, as well as isolating...pesticides list that meets acceptable standards of low risk [75] has not gained traction...

2014-01-01T23:59:59.000Z

493

Improvements on carbon nanotube structures in high-energy density ultracapacitor electrode design  

E-Print Network [OSTI]

Ultracapacitors are a class of electrochemical energy storage device that is gaining significant industrial traction due to their high charging rate and cycle life compared to rechargeable batteries; however, they store ...

Jenicek, David P. (David Pierre)

2014-01-01T23:59:59.000Z

494

Symmetric Galerkin boundary integral fracture analysis for plane orthotropic elasticity  

Science Journals Connector (OSTI)

This paper discusses the formulation and implementation of the symmetric Galerkin boundary integral method for two dimensional linear elastic orthotropic fracture analysis. For the usual case of a traction-free crack, the symmetry of the coefficient ...

L. J. Gray; G. H. Paulino

1997-07-01T23:59:59.000Z

495

E-Print Network 3.0 - amiba hexapod telescope Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

off-the-shelf ... Source: NASA - Center-TRACTION Automation System (CTAS) Collection: Energy Storage, Conversion and Utilization 25 Towards 1st light of the 6.5m MMT adaptive...

496

Mechanical and Aerospace Engineering  

E-Print Network [OSTI]

Mechanical and Aerospace Engineering seminar Three Dimensional Traction Force Microscopy with Applications in Cell Mechanics abstract The interactions between biochemical and mechanical signals during-dimensional measurement techniques are needed to investigate the effect of mechanical properties of the substrate

497

(1) Elementary Strength of Materials (2) Costruzioni di Strade e Gallerie  

Science Journals Connector (OSTI)

... deals with the subject of traction on roads and railways and the frictional and other resistances which have to be overcome, giving a number of useful formulae which enable the ...

T. H. B.

1917-01-11T23:59:59.000Z

498

E-Print Network 3.0 - aircraft fuselage structures Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

be assured to a high degree of reliability... of Jet-Exhaust Streams on Structure of Vortex Wakes. AIAA J. ... Source: NASA - Center-TRACTION Automation System (CTAS) Collection:...

499

Volcanic ash impacts on critical infrastructure  

Science Journals Connector (OSTI)

Volcanic eruptions can produce a wide range of hazards. Although phenomena such as pyroclastic flows and surges, sector collapses, lahars and ballistic blocks are the most destructive and dangerous, volcanic ash is by far the most widely distributed eruption product. Although ash falls rarely endanger human life directly, threats to public health and disruption to critical infrastructure services, aviation and primary production can lead to significant societal impacts. Even relatively small eruptions can cause widespread disruption, damage and economic loss. Volcanic eruptions are, in general, infrequent and somewhat exotic occurrences, and consequently in many parts of the world, the management of critical infrastructure during volcanic crises can be improved with greater knowledge of the likely impacts. This article presents an overview of volcanic ash impacts on critical infrastructure, other than aviation and fuel supply, illustrated by findings from impact assessment reconnaissance trips carried out to a wide range of locations worldwide by our international research group and local collaborators. ‘Critical infrastructure’ includes those assets, frequently taken for granted, which are essential for the functioning of a society and economy. Electricity networks are very vulnerable to disruption from volcanic ash falls. This is particularly the case when fine ash is erupted because it has a greater tendency to adhere to line and substation insulators, where it can cause flashover (unintended electrical discharge) which can in turn cause widespread and disruptive outages. Weather conditions are a major determinant of flashover risk. Dry ash is not conductive, and heavy rain will wash ash from insulators, but light rain/mist will mobilise readily-soluble salts on the surface of the ash grains and lower the ash layer’s resistivity. Wet ash is also heavier than dry ash, increasing the risk of line breakage or tower/pole collapse. Particular issues for water supply managers include: monitoring turbidity levels in raw water intakes, and if necessary increasing chlorination to compensate for higher turbidity; managing water demand; and communicating monitoring results with the public to allay fears of contamination. Ash can cause major damage to wastewater disposal systems. Ash deposited onto impervious surfaces such as roads and car parks is very easily washed into storm drains, where it can form intractable masses and lead to long-term flooding problems. It can also enter wastewater treatment plants (WWTPs), both through sewer lines and by direct fallout. Damage to modern \\{WWTPs\\} can run into millions of dollars. Ash falls reduce visibility creating hazards for ground transportation. Dry ash is also readily remobilised by vehicle traffic and wind, and dry and wet ash deposits will reduce traction on paved surfaces, including airport runways. Ash cleanup from road and airports is commonly necessary, but the large volumes make it logistically challenging. Vehicles are vulnerable to ash; it will clog filters and brake systems and abrade moving parts within engines. Lastly, modern telecommunications networks appear to be relatively resilient to volcanic ash fall. Signal attenuation and interference during ash falls has not been reported in eruptions over the past 20 years, with the exception of interference from ash plume-generated lightning. However, some telecommunications equipment is vulnerable to airborne ash, in particular heating, ventilation and air-conditioning (HVAC) systems which may become blocked from ash ingestion leading to overheating. This summary of volcanic ash impacts on critical infrastructure provides insight into the relative vulnerability of infrastructure under a range of different ashfall scenarios. Identifying and quantifying these impacts is an essential step in building resilience within these critical systems. We have attempted to consider interdependencies between sectors in a holistic way using systems thinking. As modern society becomes increasingly complex and interdependent this

Thomas M. Wilson; Carol Stewart; Victoria Sword-Daniels; Graham S. Leonard; David M. Johnston; Jim W. Cole; Johnny Wardman; Grant Wilson; Scott T. Barnard

2012-01-01T23:59:59.000Z

500

Fluorinated diamondlike carbon templates for high resolution nanoimprint lithography  

E-Print Network [OSTI]

and The Nanotechnology Center for Mechanics in Regenerative Medicine, Columbia University, New York, New York 10027 C and The Nanotechnology Center for Mechanics in Regenerative Medicine, Columbia University, New York, New York 10027 Department of Chemical Engineering, Columbia University, New York, New York 10027 and The Nanotechnology

Hone, James