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Note: This page contains sample records for the topic "advanced combustion engines" 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

Vehicle Technologies Office: Advanced Combustion Engines  

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

Advanced Combustion Advanced Combustion Engines to someone by E-mail Share Vehicle Technologies Office: Advanced Combustion Engines on Facebook Tweet about Vehicle Technologies Office: Advanced Combustion Engines on Twitter Bookmark Vehicle Technologies Office: Advanced Combustion Engines on Google Bookmark Vehicle Technologies Office: Advanced Combustion Engines on Delicious Rank Vehicle Technologies Office: Advanced Combustion Engines on Digg Find More places to share Vehicle Technologies Office: Advanced Combustion Engines on AddThis.com... Just the Basics Hybrid & Vehicle Systems Energy Storage Advanced Power Electronics & Electrical Machines Advanced Combustion Engines Combustion Engines Emission Control Waste Heat Recovery Fuels & Lubricants Materials Technologies Advanced Combustion Engines

2

Optimization of Advanced Diesel Engine Combustion Strategies...  

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

Optimization of Advanced Diesel Engine Combustion Strategies Optimization of Advanced Diesel Engine Combustion Strategies 2010 DOE Vehicle Technologies and Hydrogen Programs Annual...

3

Chemical Kinetic Models for Advanced Engine Combustion  

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

barriers to increased engine efficiency and decreased emissions by allowing optimization of fuels with advanced engine combustion 6 LLNL-PRES-652979 2014 DOE Merit Review...

4

2008 DOE Annual Merit Review Advanced Combustion Engines and...  

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

Advanced Combustion Engines and Fuels R&DTechnology Integration Plenary Session Overview 2008 DOE Annual Merit Review Advanced Combustion Engines and Fuels R&DTechnology...

5

Vehicle Technologies Office: Advanced Combustion Engines  

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

Combustion Engines Combustion Engines Improving the efficiency of internal combustion engines is one of the most promising and cost-effective near- to mid-term approaches to increasing highway vehicles' fuel economy. The Vehicle Technologies Office's research and development activities address critical barriers to commercializing higher efficiency, very low emissions advanced internal combustion engines for passenger and commercial vehicles. This technology has great potential to reduce U.S. petroleum consumption, resulting in greater economic, environmental, and energy security. Already offering outstanding drivability and reliability to over 230 million passenger vehicles, internal combustion engines have the potential to become substantially more efficient. Initial results from laboratory engine tests indicate that passenger vehicle fuel economy can be improved by more than up to 50 percent, and some vehicle simulation models estimate potential improvements of up to 75 percent. Advanced combustion engines can utilize renewable fuels, and when combined with hybrid electric powertrains could have even further reductions in fuel consumption. As the EIA reference case forecasts that by 2035, more than 99 percent of light- and heavy-duty vehicles sold will still have internal combustion engines, the potential fuel savings is tremendous.

6

Fuel Effects on Advanced Combustion Engines | Department of Energy  

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

More Documents & Publications Fuel Effects on Advanced Combustion: Heavy-Duty Optical-Engine Research Greenpower Trap Mufflerl System Low-Temperature Diesel Combustion...

7

Vehicle Technologies Office: Advanced Combustion Engines | Department...  

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

Batteries Fuel Efficiency & Emissions Combustion Engines Fuel Effects on Combustion Idle Reduction Emissions Waste Heat Recovery Lightweighting Parasitic Loss Reduction Lubricants...

8

The Effects of Ethanol/Gasoline Blends on Advanced Combustion Strategies in Internal Combustion Engines.  

E-Print Network [OSTI]

??This dissertation presents the effects of blending ethanol with gasoline on advanced combustion strategies in internal combustion engines. The unique chemical, physical and thermal properties… (more)

Fatouraie, Mohammad

2014-01-01T23:59:59.000Z

9

2009 Advanced Combustion Engine R&D Annual Report  

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

COMBUSTION COMBUSTION ENGINE RESEARCH AND DEVELOPMENT annual progress report 2009 2009 2009 2009 2009 2009 2009 2009 2009 2009 Approved by Gurpreet Singh Team Leader, Advanced Combustion Engine R&D Office of Vehicle Technologies FY 2009 Progress rePort For AdvAnced combustion engine reseArcH And deveLoPment Energy Efficiency and Renewable Energy Office of Vehicle Technologies December 2009 U.S. Department of Energy 1000 Independence Avenue, S.W. Washington, D.C. 20585-0121 ii Advanced Combustion Engine Technologies FY 2009 Annual Progress Report

10

FY 2008 Progress Report for Advanced Combustion Engine Technologies  

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

COMBUSTION COMBUSTION ENGINE TECHNOLOGIES annual progress report 2008 V e h i c l e T e c h n o l o g i e s P r o g r a m U.S. Department of Energy 1000 Independence Avenue, S.W. Washington, D.C. 20585-0121 FY 2008 Progress rePort For AdvAnced combustion engine technologies Energy Efficiency

11

Fuel Effects on Advanced Combustion: Heavy-Duty Optical-Engine...  

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

More Documents & Publications Fuel Effects on Advanced Combustion: Heavy-Duty Optical-Engine Research Fuels and Combustion Strategies for High-Efficiency Clean-Combustion...

12

2011 Advanced Combustion Engine R&D Annual Report  

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

annual progress report 2011 annual progress report 2011 Advanced Combustion Engine Research and Development DOE-ACE-2011AR Approved by Gurpreet Singh Team Leader, Advanced Combustion Engine R&D Vehicle Technologies Program FY 2011 Progress rePort For AdvAnced combustion engine reseArcH And deveLoPment Energy Efficiency and Renewable Energy Vehicle Technologies Program U.S. Department of Energy 1000 Independence Avenue, S.W. Washington, D.C. 20585-0121 December 2011 DOE-ACE-2011AR ii Advanced Combustion Engine R&D FY 2011 Annual Progress Report We would like to express our sincere appreciation to Alliance Technical Services, Inc. and Oak Ridge National Laboratory for their technical and artistic contributions in preparing and publishing this report. In addition, we would like to thank all the participants for their contributions to the programs and all the

13

Optimization of Advanced Diesel Engine Combustion Strategies  

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

B, extending combustion duration Location B with dummy plug installed Location A with optics installed fiber to FTIR common rail injector common rail fuel spray Location B with...

14

Advanced Combustion Operation in a Compression Ignition Engine  

Science Journals Connector (OSTI)

In this study, advanced combustion operating modes were investigated on a DDC/VM Motori 2.5 L, four-cylinder, turbocharged, common rail, direct-injection light-duty diesel engine, with exhaust emission being the main focus. ... This process is based on work from Al-Qurashi et al., who conducted fundamental flame studies that showed that the thermal effect of EGR enhances the oxidative reactivity of diesel soot. ... Heywood, J. B. Internal Combustion Engine Fundamentals; McGraw-Hill Book Company: New York, 1988; p 930. ...

Gregory K. Lilik; José Martín Herreros; André L. Boehman

2008-12-15T23:59:59.000Z

15

Advanced Combustion Engine R&D: Goals, Strategies, and Top Accomplishments (Brochure)  

SciTech Connect (OSTI)

Fact sheet describes the top accomplishments, goals and strategies of DOEs Advanced Combustion Engine Research and Development sub program.

Not Available

2009-03-01T23:59:59.000Z

16

Advanced Combustion | Argonne National Laboratory  

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

Combustion Advanced Combustion Combustion engines drive a large percentage of our nation's transportation vehicles and power generation and manufacturing facilities. Today's...

17

Overview of DOE Advanced Combustion Engine R&D  

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

modeling and experiments Advanced diagnostics including optical, laser, x-ray, and neutron based techniques Multi-dimensional computational models and combustion...

18

Advanced Combustion Engine R&D 2003 Annual Progress Report  

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

1000 Independence Avenue, S.W. 1000 Independence Avenue, S.W. Washington, D.C. 20585-0121 FY 2003 Progress Report for Advanced Combustion Engine Research & Development Energy Efficiency and Renewable Energy Office of FreedomCAR and Vehicle Technologies Approved by Gurpreet Singh December 2003 Advanced Combustion Engine R&D FY 2003 Progress Report ii Advanced Combustion Engine R&D FY 2003 Progress Report iii CONTENTS CONTENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii INDEX OF PRIMARY AUTHORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii I. INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

19

Large Eddy Simulation (LES) Applied to Advanced Engine Combustion...  

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

for engine combustion and emission control - Efficient and routine use of High-Performance-Computing (HPC) to establish optimal balance between predictive and affordable models...

20

Advanced Combustion Engine R&D: Goals, Strategies, and Top Accomplishments  

Broader source: Energy.gov [DOE]

Fact sheet describing the goals, strategies, and some of the major accomplishments of the Advanced Combustion Engine R&D subprogram of VTP.

Note: This page contains sample records for the topic "advanced combustion engines" 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

Advanced combustion methods for simultaneous reduction of emissions and fuel consumption of compression ignition engines  

Science Journals Connector (OSTI)

In this work, advanced combustion modes i.e. improved low-temperature combustion (LTC) and reactivity controlled compression ignition (RCCI) have been achieved in a diesel engine. LTC mode has been improved us...

P. Brijesh; A. Chowdhury; S. Sreedhara

2014-07-01T23:59:59.000Z

22

54.5 MPG and Beyond: Speeding Up Development of Advanced Combustion Engines  

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

Speeding Up Development of Advanced Combustion Speeding Up Development of Advanced Combustion Engines 54.5 MPG and Beyond: Speeding Up Development of Advanced Combustion Engines December 10, 2012 - 1:00pm Addthis Argonne engineer Steve Ciatti works on an engine in Argonne's Engine Research Facility -- a facility where researchers can study in-cylinder combustion and emissions under realistic operating conditions. | Photo courtesy of Argonne National Laboratory. Argonne engineer Steve Ciatti works on an engine in Argonne's Engine Research Facility -- a facility where researchers can study in-cylinder combustion and emissions under realistic operating conditions. | Photo courtesy of Argonne National Laboratory. Rebecca Matulka Rebecca Matulka Digital Communications Specialist, Office of Public Affairs

23

Increased Engine Efficiency via Advancements in Engine Combustion...  

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

Directions in Engine-Efficiency and Emissions Research (DEER) Conference in Detroit, MI, September 27-30, 2010. deer10sisken.pdf More Documents & Publications High-Efficiency...

24

Overview of the DOE Advanced Combustion Engine R&D  

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

& Non-Carbon) Electricity (Conventional & Renewable Sources) Improve Fuel Economy Reduce GHG Emissions Displace Petroleum IC Engine and Transmission Advances Light & Heavy-Duty...

25

Diesel Engine Advanced Multi-Mode Combustion Control and Generalized Nonlinear Transient Trajectory Shaping Control Methods.  

E-Print Network [OSTI]

?? This dissertation addresses the Diesel engine advanced combustion mode switching transient control and the generalized nonlinear non-equilibrium transient trajectory shaping (NETTS) control problem.Control-oriented models… (more)

Yan, Fengjun

2012-01-01T23:59:59.000Z

26

Fuel Effects on Advanced Combustion: Heavy-Duty Optical-Engine...  

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

R&D Annual Progress Report Vehicle Technologies Office: 2008-2009 Fuels Technologies R&D Progress Report Fuel Effects on Advanced Combustion: Heavy-Duty Optical-Engine Research...

27

FY2000 Progress Report for Combustion and Emission Control for Advanced CIDI Engines  

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

Energy Energy Office of Transportation Technologies 1000 Independence Avenue, S.W. Washington, DC 20585-0121 FY 2000 Progress Report for Combustion and Emission Control for Advanced CIDI Engines Energy Efficiency and Renewable Energy Office of Transportation Technologies Approved by Steven Chalk November 2000 Combustion and Emission Control for Advanced CIDI Engines FY 2000 Progress Report CONTENTS Page iii I. INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 II. EMISSION CONTROL SUBSYSTEM DEVELOPMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . .9 A. Emission Control Subsystem Evaluation for Light-Duty CIDI Vehicles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

28

Advanced Combustion  

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

Systems Systems Advanced Combustion Background Conventional coal-fired power plants utilize steam turbines to generate electricity, which operate at efficiencies of 35-37 percent. Operation at higher temperatures and pressures can lead to higher efficiencies, resulting in reduced fuel consumption and lower greenhouse gas emissions. Higher efficiency also reduces CO2 production for the same amount of energy produced, thereby facilitating a reduction in greenhouse gas emissions. When combined, oxy-combustion comes with an efficiency hit, so it will actually increase the amount of CO2 to be captured. But without so much N2 in the flue gas, it will be easier and perhaps more efficient to capture, utilize and sequester. NETL's Advanced Combustion Project and members of the NETL-Regional University

29

Advanced Combustion Engine R&D: Goals, Strategies, and Top Accomplishments  

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

Although internal combustion engines have been used Although internal combustion engines have been used for more than a century, significant improvements in energy efficiency and emissions reduction are still possible. In fact, boosting the efficiency of internal combustion engines is one of the most promising and cost-effective approaches to increasing vehicle fuel economy over the next 30 years. The United States can cut its transportation fuel use 20%-40% through commercialization of advanced engines-resulting in greater economic, environmental, and energy security. Using these engines in hybrid and plug-in hybrid electric vehicles will enable even greater fuel savings benefits. The Advanced Combustion Engine R&D subprogram of the U.S. Department of Energy's Vehicle Technologies Program (VTP) is improving the fuel economy of

30

Vehicle Technologies Office: Combustion Engine Research  

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

Combustion Engine Combustion Engine Research to someone by E-mail Share Vehicle Technologies Office: Combustion Engine Research on Facebook Tweet about Vehicle Technologies Office: Combustion Engine Research on Twitter Bookmark Vehicle Technologies Office: Combustion Engine Research on Google Bookmark Vehicle Technologies Office: Combustion Engine Research on Delicious Rank Vehicle Technologies Office: Combustion Engine Research on Digg Find More places to share Vehicle Technologies Office: Combustion Engine Research on AddThis.com... Just the Basics Hybrid & Vehicle Systems Energy Storage Advanced Power Electronics & Electrical Machines Advanced Combustion Engines Combustion Engines Emission Control Waste Heat Recovery Fuels & Lubricants Materials Technologies Combustion Engine Research

31

Advanced Combustion Concepts - Enabling Systems and Solutions...  

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

engine installed and vehicle available for application, emission and fuel economy optimization with advanced combustion modes. 4 Advanced combustion control strategy, capable of...

32

Combustion Engine  

Broader source: Energy.gov [DOE]

Pictured here is an animation showing the basic mechanics of how an internal combustion engine works. With support from the Energy Department, General Motors researchers developed a new technology ...

33

Combustion Model for Engine Concept Development | Department...  

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

Combustion Model for Engine Concept Development Presentation shows how 1-cylinder testing, 3D combustion CFD and 1D gas exchange with an advanced combustion model are used...

35

US DRIVE Advanced Combustion and Emission Control Technical Team Roadmap  

Broader source: Energy.gov [DOE]

The ACEC focuses on advanced engine and aftertreatment technology for three major combustion strategies: (1) Low-Temperature Combustion, (2) Dilute Gasoline combustion, and (3) Clean Diesel Combustion.

36

Advanced High Efficiency Clean Diesel Combustion with Low Cost...  

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

Efficiency Clean Diesel Combustion with Low Cost for Hybrid Engines Advanced High Efficiency Clean Diesel Combustion with Low Cost for Hybrid Engines Clean, in-cylinder combustion...

37

Advanced Combustion  

SciTech Connect (OSTI)

Topics covered in this presentation include: the continued importance of coal; related materials challenges; combining oxy-combustion & A-USC steam; and casting large superalloy turbine components.

Holcomb, Gordon R. [NETL

2013-03-05T23:59:59.000Z

38

2014 Annual Merit Review Results Report - Advanced Combustion...  

Energy Savers [EERE]

Advanced Combustion Engine Technologies 2014 Annual Merit Review Results Report - Advanced Combustion Engine Technologies Merit review of DOE Vehicle Technologies research...

39

Fuel Effects on Ignition and Their Impact on Advanced Combustion...  

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

Ignition and Their Impact on Advanced Combustion Engines Fuel Effects on Ignition and Their Impact on Advanced Combustion Engines Presentation given at DEER 2006, August 20-24,...

40

Overview of the Advanced Combustion Engine R&D  

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

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

Note: This page contains sample records for the topic "advanced combustion engines" 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

Large Eddy Simulation (LES) Applied to Advanced Engine Combustion...  

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

over broad operating ranges) - Requirements for efficient and routine use of high-performance computing (HPC), development of both predictive and affordable models for advanced...

42

2011 Advanced Combustion Engine R&D Annual Report  

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

M., Experimental evaluation of strategies to increase the operation range of a biogas HCCI engine for power generation, accepted for International Conference on Applied...

43

Advanced Combustion Engine Program 2005 Merit Review and Peer Evaluation Report  

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

Less dependence on foreign oil, and eventual transition to an emissions-free, petroleum-free vehicle ADVANCED COMBUSTION ENGINE PROGRAM F r e e d o m C A r A n d V e h i C l e T e C h n o l o g i e s P r o g r A m MERIT REVIEW & PEER EVALUATION REPORT Department of Energy Washington, DC 20585 October 5, 2005 Dear Colleague: This document summarizes the comments provided by the Review Panel for the FY 2005 Department of Energy (DOE) Advanced Combustion Engine R&D Merit Review and Peer Evaluation Meeting, the "ACE Review," held on April 19-21, 2005 at Argonne National Laboratory (ANL). The raw evaluations and comments of the panel were provided (with reviewers' names deleted) to the presenters in early June and were used by national laboratory researchers in the development of Annual Operating Plans (AOPs) for fiscal year (FY) 2006. The panel's

44

DOE Project: Optimization of Advanced Diesel Engine Combustion Strategies "University Research in Advanced Combustion and Emissions Control" Office of FreedomCAR and Vehicle Technologies Program  

SciTech Connect (OSTI)

The goal of the present technology development was to increase the efficiency of internal combustion engines while minimizing the energy penalty of meeting emissions regulations. This objective was achieved through experimentation and the development of advanced combustion regimes and emission control strategies, coupled with advanced petroleum and non-petroleum fuel formulations. To meet the goals of the project, it was necessary to improve the efficiency of expansion work extraction, and this required optimized combustion phasing and minimized in-cylinder heat transfer losses. To minimize fuel used for diesel particulate filter (DPF) regeneration, soot emissions were also minimized. Because of the complex nature of optimizing production engines for real-world variations in fuels, temperatures and pressures, the project applied high-fidelity computing and high-resolution engine experiments synergistically to create and apply advanced tools (i.e., fast, accurate predictive models) developed for low-emission, fuel-efficient engine designs. The companion experiments were conducted using representative single- and multi-cylinder automotive and truck diesel engines.

Reitz, Rolf; Foster, D.; Ghandhi, J.; Rothamer, D.; Rutland, C.; Sanders, S.; Trujillo, M.

2012-10-26T23:59:59.000Z

45

Overview of the DOE Advanced Combustion Engine R&D Program  

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

insights into combustion instability phenomena Research in close collaboration with automobile and engine manufacturers will directly impact the development of the next generation...

46

High Efficiency Clean Combustion for Heavy-Duty Engine  

Broader source: Energy.gov [DOE]

Explore advancements in engine combustion systems using high-efficiency clean combustion (HECC) techniques to minimize engine-out emissions while optimizing fuel economy.

47

Light Duty Combustion Research: Advanced Light-Duty Combustion...  

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

Light Duty Combustion Research: Advanced Light-Duty Combustion Experiments Light Duty Combustion Research: Advanced Light-Duty Combustion Experiments 2009 DOE Hydrogen Program and...

48

Advanced diesel combustion  

Science Journals Connector (OSTI)

Future emission norms will further reduce the vehicle emissions of diesel engines. To meet the goal of achieving these stringent limits while maintaining attractive attributes of marketability, the combustion ...

Dirk Adolph; Hartwig Busch; Stefan Pischinger; Andreas Kolbeck…

2008-01-01T23:59:59.000Z

49

Stretch Efficiency for Combustion Engines: Exploiting New Combustion...  

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

Stretch Efficiency for Combustion Engines: Exploiting New Combustion Regimes Stretch Efficiency for Combustion Engines: Exploiting New Combustion Regimes 2012 DOE Hydrogen and Fuel...

50

A review of the combustion and emissions properties of advanced transportation biofuels and their impact on existing and future engines  

Science Journals Connector (OSTI)

Abstract The fundamental combustion and emissions properties of advanced biofuels are reviewed, and their impact on engine performance is discussed, in order to guide the selection of optimal conversion routes for obtaining desired fuel combustion properties. Advanced biofuels from second- and third-generation feedstocks can result in significantly reduced life-cycle greenhouse-gas emissions, compared to traditional fossil fuels or first-generation biofuels from food-based feedstocks. These advanced biofuels include alcohols, biodiesel, or synthetic hydrocarbons obtained either from hydrotreatment of oxygenated biofuels or from Fischer–Tropsch synthesis. The engine performance and exhaust pollutant emissions of advanced biofuels are linked to their fundamental combustion properties, which can be modeled using combustion chemical-kinetic mechanisms and surrogate fuel blends. In general, first-generation or advanced biofuels perform well in existing combustion engines, either as blend additives with petro-fuels or as pure “drop-in” replacements. Generally, oxygenated biofuels produce lower intrinsic nitric-oxide and soot emissions than hydrocarbon fuels in fundamental experiments, but engine-test results can be complicated by multiple factors. In order to reduce engine emissions and improve fuel efficiency, several novel technologies, including engines and fuel cells, are being developed. The future fuel requirements for a selection of such novel power-generation technologies, along with their potential performance improvements over existing technologies, are discussed. The trend in the biofuels and transportation industries appears to be moving towards drop-in fuels that require little changes in vehicle or fueling infrastructure, but this comes at a cost of reduced life-cycle efficiencies for the overall alternative-fuel production and utilization system. In the future, fuel-flexible, high-efficiency, and ultra-low-emissions heat-engine and fuel-cell technologies promise to enable consumers to switch to the lowest-cost and cleanest fuel available in their market at any given time. This would also enable society as a whole to maximize its global level of transportation activity, while maintaining urban air quality, within an energy- and carbon-constrained world.

Jeffrey M. Bergthorson; Murray J. Thomson

2015-01-01T23:59:59.000Z

51

Advanced High Efficiency Clean Diesel Combustion with Low Cost for Hybrid Engines  

Broader source: Energy.gov [DOE]

Clean, in-cylinder combustion can be enabled by a micro-variable circular orifice, dual mode PCCI, dew film combustion, and a novel combustion chamber design

52

Nanoparticle Emissions from Internal Combustion Engines | Department...  

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

Nanoparticle Emissions from Internal Combustion Engines Nanoparticle Emissions from Internal Combustion Engines 2004 Diesel Engine Emissions Reduction (DEER) Conference...

53

Stretch Efficiency for Combustion Engines: Exploiting New Combustion...  

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

D.C. ace15daw.pdf More Documents & Publications Stretch Efficiency for Combustion Engines: Exploiting New Combustion Regimes Stretch Efficiency for Combustion Engines:...

54

Fuel Effects on Ignition and Their Impact on Advanced Combustion...  

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

Ignition and Their Impact on Advanced Combustion Engines Joshua D. Taylor - National Renewable Energy Laboratory Stuart Neill, Hailin Li - National Research Council Canada...

55

Engine Combustion & Efficiency - FEERC  

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

Engine Combustion & Efficiency Engine Combustion & Efficiency ORNL currently and historically supports the U.S. DOE on multi-cylinder and vehicle applications of diesel combustion, lean burn gasoline combustion, and low temperature combustion processes, and performs principal research on efficiency enabling technologies including emission controls, thermal energy recovery, and bio-renewable fuels. Research areas span from fundamental concepts to engine/vehicle integration and demonstration with a particular emphasis on the following areas: Thermodynamics for identifying and characterizing efficiency opportunities for engine-systems as well as the development of non-conventional combustion concepts for reducing fundamental combustion losses. Nonlinear sciences for improving the physical understanding and

56

Argonne TTRDC - Engines - Home - combustion, compression ignition,  

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

* Combustion Visualization * Combustion Visualization * Compression-Ignition * Emissions Control * Fuel Injection and Sprays * Idling * Multi-Dimensional Modeling * Particulate Matter * Spark Ignition Green Racing GREET Hybrid Electric Vehicles Hydrogen & Fuel Cells Materials Modeling, Simulation & Software Plug-In Hybrid Electric Vehicles PSAT Smart Grid Student Competitions Technology Analysis Transportation Research and Analysis Computing Center Working With Argonne Contact TTRDC Engines Omnivorous engine tested by Thomas Wallner Thomas Wallner tests the omnivorous engine, a type of spark-ignition engine. Argonne's engine research is contributing to advances in technology that will impact the use of conventional and alternative fuels and the design of advanced technology vehicles. Compression Ignition

57

DOE Project 18546, AOP Task 1.1, Fuel Effects on Advanced Combustion Engines  

SciTech Connect (OSTI)

Research in 2011 was focused on diesel range fuels and diesel combustion and fuels evaluated in 2011 included a series of oxygenated biofuels fuels from University of Maine, oxygenated fuel compounds representing materials which could be made from sewage, oxygenated marine diesel fuels for low emissions, and a new series of FACE fuel surrogates and FACE fuels with detailed exhaust chemistry and particulate size measurements. Fuels obtained in late 2011, which will be evaluated in 2012, include a series of oil shale derived fuels from PNNL, green diesel fuel (hydrotreated vegetable oil) from UOP, University of Maine cellulosic biofuel (levulene), and pyrolysis derived fuels from UOP pyrolysis oil, upgraded at University of Georgia. We were able to demonstrate, through a project with University of Wisconsin, that a hybrid strategy for fuel surrogates provided both accurate and rapid CFD combustion modeling for diesel HCCI. In this strategy, high molecular weight compounds are used to more accurately represent physical processes and smaller molecular weight compounds are used for chemistry to speed chemical calculations. We conducted a small collaboration with sp3H, a French company developing an on-board fuel quality sensor based on near infrared analysis to determine how to use fuel property and chemistry information for engine control. We were able to show that selected outputs from the sensor correlated to both fuel properties and to engine performance. This collaboration leveraged our past statistical analysis work and further work will be done as opportunity permits. We conducted blending experiments to determine characteristics of ethanol blends based on the gasoline characteristics used for blending. Results indicate that much of the octane benefits gained by high level ethanol blending can be negated by use of low octane gasoline blend stocks, as allowed by ASTM D5798. This may limit ability to optimize engines for improved efficiency with ethanol fuels. Extensive data from current and previous years was leveraged into participation with several large proposal teams, as our fuels database covers a very wide range of conventional and emerging fuels and biofuels.

Bunting, Bruce G [ORNL; Bunce, Michael [ORNL

2012-01-01T23:59:59.000Z

58

Advanced Combustion Technology to Enable High Efficiency Clean...  

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

Combustion Technology to Enable High Efficiency Clean Combustion Advanced Combustion Technology to Enable High Efficiency Clean Combustion Summary of advanced combustion research...

59

Combustion Exhaust Gas Heat to Power usingThermoelectric Engines...  

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

Solutions Combustion Exhaust Gas Heat to Power using Thermoelectric Engines John LaGrandeur October 5, 2011 Advanced Thermoelectric Solutions - 1 - Market motivation based on CO 2...

60

Vehicle Technologies Office: 2010 Advanced Combustion R&D Annual Progress Report  

Broader source: Energy.gov [DOE]

2010 annual report on the work of the the Advanced Combustion Engine R&D subprogram. The Advanced Combustion Engine R&D subprogram supports the Vehicle Technologies Office mission by removing the critical technical barriers to commercialization of advanced internal combustion engines (ICEs) for passenger and commercial vehicles that meet future federal emissions regulations.

Note: This page contains sample records for the topic "advanced combustion engines" 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

Vehicle Technologies Office: 2008 Advanced Combustion R&D Annual Progress Report  

Broader source: Energy.gov [DOE]

2008 annual report on the work of the the Advanced Combustion Engine R&D subprogram. The Advanced Combustion Engine R&D subprogram supports the Vehicle Technologies Office's mission by removing the critical technical barriers to commercialization of advanced internal combustion engines (ICEs) for passenger and commercial vehicles that meet future federal emissions regulations.

62

Vehicle Technologies Office: 2012 Advanced Combustion R&D Annual Progress Report  

Broader source: Energy.gov [DOE]

Annual report on the work of the the Advanced Combustion Engine R&D subprogram. The Advanced Combustion Engine R&D subprogram supports the Vehicle Technologies Office mission by removing the critical technical barriers to commercialization of advanced internal combustion engines (ICEs) for passenger and commercial vehicles that meet future federal emissions regulations.

63

Advanced Combustion Technologies  

Broader source: Energy.gov [DOE]

The workhorse of America's electric power sector is the coal-fired power plant. Today, coal combustion plants account for more than half of the Nation's electric power generation. Largely because...

64

Advanced Combustion Concepts - Enabling Systems and Solutions...  

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

engine * Integration of proposed air path and HCCI combustion control strategies into ECU software * Prototype level 2 updates and proof of combustion concept for vehicle readiness...

65

Vehicle Technologies Office: 2011 Advanced Combustion R&D Annual Progress Report  

Broader source: Energy.gov [DOE]

Annual report on the work of the the Advanced Combustion Engine R&D subprogram that focuses on developing advanced ICE technologies for all highway transportation vehicles.

66

Integrated Advanced Reciprocating Internal Combustion Engine System for Increased Utilization of Gaseous Opportunity Fuels  

SciTech Connect (OSTI)

The project is addressing barriers to or opportunities for increasing distributed generation (DG)/combined heat and power (CHP) use in industrial applications using renewable/opportunity fuels. This project brings together novel gas quality sensor (GQS) technology with engine management for opportunity fuels such as landfill gas, digester gas and coal bed methane. By providing the capability for near real-time monitoring of the composition of these opportunity fuels, the GQS output can be used to improve the performance, increase efficiency, raise system reliability, and provide improved project economics and reduced emissions for engines used in distributed generation and combined heat and power.

Pratapas, John; Zelepouga, Serguei; Gnatenko, Vitaliy; Saveliev, Alexei; Jangale, Vilas; Li, Hailin; Getz, Timothy; Mather, Daniel

2013-08-31T23:59:59.000Z

67

Vehicle Technologies Office: 2009 Advanced Combustion R&D Annual Progress Report  

Broader source: Energy.gov [DOE]

2010 annual report on the work of the the Advanced Combustion Engine R&D subprogram.The Advanced Combustion Engine R&D subprogram supports the Vehicle Technologies Office by removing the technical barriers to commercialization of internal combustion engines for passenger and commercial vehicles that meet future Federal emissions regulations.

68

Emissions Characterization from Advanced Combustion & Alternative Fuels -  

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

Emissions Characterization from Advanced Combustion & Emissions Characterization from Advanced Combustion & Alternative Fuels Exhaust emissions from engines operating in advanced combustion modes such as PCCI (Premixed Charge Compression Ignition) and HCCI (Homogeneous Charge Compression Ignition) are analyzed with an array of analytical tools. Furthermore, emissions from a variety of alternative fuels and mixtures thereof with conventional gasoline and diesel fuels are also measured. In addition to measuring the criteria pollutants nitrogen oxides (NOx), carbon monoxide (CO), hydrocarbons (HCs) are also measured and categorized based on chemistry. These chemical details of the emissions provide important information for optimizing combustion processes to maximize fuel efficiency while minimizing emissions

69

Some recent advances in droplet combustion  

Science Journals Connector (OSTI)

This paper reviews the theoretical and experimental advances in droplet combustion since the 1982 Second International Colloquium on Drops and Bubbles. Specific topics discussed include multicomponent droplet combustion and microexplosion convection droplet combustion the combustion of slurries propellants and hazardous wastes soot formation in droplet burning and several miscellaneous subjects. Areas of further research are suggested.

C. K. Law

1990-01-01T23:59:59.000Z

70

Vehicle Technologies Office: Materials for High-Efficiency Combustion Engines  

Broader source: Energy.gov [DOE]

The Vehicle Technologies Office (VTO) is supporting work to improve the efficiency of advanced internal combustion engines for automotive, light trucks, and heavy-truck applications by 25% to 50%....

71

Advanced Combustion Concepts - Enabling Systems and Solutions...  

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

Fuel efficiency as key market driver Stringent emission requirements System cost of advanced combustion Targets 30% fuel efficiency improvement SULEV emissions...

72

Advanced Reciprocating Engine Systems  

Broader source: Energy.gov [DOE]

The Advanced Reciprocating Engine Systems (ARES) program is designed to promote separate but parallel engine development between the major stationary, gaseous fueled engine manufacturers in the...

73

Stretch Efficiency for Combustion Engines: Exploiting New Combustion...  

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

boost. * H 2 enrichment extends lean limit, improves C p C v ratio, lowers cylinder heat loss, assists cold start, lowers combustion irreversibility. IC Engine Work Reformer...

74

High Efficiency Clean Combustion Engine Designs for Gasoline...  

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

High Efficiency Clean Combustion Engine Designs for Gasoline and Diesel Engines High Efficiency Clean Combustion Engine Designs for Gasoline and Diesel Engines 2009 DOE Hydrogen...

75

Engine Combustion Network Experimental Data  

DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

Maintained by the Engine Combustion Department of Sandia National Laboratories, data currently available on the website includes reacting and non-reacting sprays in a constant-volume chamber at conditions typical of diesel combustion. The data are useful for model development and validation because of the well-defined boundary conditions and the wide range of conditions employed. A search utility displays data based on experimental conditions such as ambient temperature, ambient density, injection pressure, nozzle size, fuel, etc. Experiment-related visualizations are also available. The search utility for experimental data is located at http://public.ca.sandia.gov/ecn/cvdata/frameset.html (Specialized Interface)

76

Non-Petroleum-Based Fuel Effects on Advanced Combustion | Department...  

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

Non-Petroleum-Based Fuel Effects on Advanced Combustion Non-Petroleum-Based Fuel Effects on Advanced Combustion 2010 DOE Vehicle Technologies and Hydrogen Programs Annual Merit...

77

Advanced Combustion Technologies | Department of Energy  

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

Science & Innovation » Clean Coal » Advanced Combustion Science & Innovation » Clean Coal » Advanced Combustion Technologies Advanced Combustion Technologies Joe Yip, a researcher at FE's National Energy Technology Laboratory, uses laser-based Rayleigh light scattering to measure flame density and speed over a flat flame burner. Oxyfuel combustion, using oxygen in place of air with diluents such as steam or carbon dioxide, can reduce pollutant emissions in advanced power cycles using gas turbines. Photo courtesy of NETL Multimedia. Joe Yip, a researcher at FE's National Energy Technology Laboratory, uses laser-based Rayleigh light scattering to measure flame density and speed over a flat flame burner. Oxyfuel combustion, using oxygen in place of air with diluents such as steam or carbon dioxide, can reduce pollutant

78

Advanced Natural Gas Reciprocating Engine(s)  

SciTech Connect (OSTI)

The objective of the Cummins ARES program, in partnership with the US Department of Energy (DOE), is to develop advanced natural gas engine technologies that increase engine system efficiency at lower emissions levels while attaining lower cost of ownership. The goals of the project are to demonstrate engine system achieving 50% Brake Thermal Efficiency (BTE) in three phases, 44%, 47% and 50% (starting baseline efficiency at 36% BTE) and 0.1 g/bhp-hr NOx system out emissions (starting baseline NOx emissions at 2 – 4 g/bhp-hr NOx). Primary path towards above goals include high Brake Mean Effective Pressure (BMEP), improved closed cycle efficiency, increased air handling efficiency and optimized engine subsystems. Cummins has successfully demonstrated each of the phases of this program. All targets have been achieved through application of a combined set of advanced base engine technologies and Waste Heat Recovery from Charge Air and Exhaust streams, optimized and validated on the demonstration engine and other large engines. The following architectures were selected for each Phase: Phase 1: Lean Burn Spark Ignited (SI) Key Technologies: High Efficiency Turbocharging, Higher Efficiency Combustion System. In production on the 60/91L engines. Over 500MW of ARES Phase 1 technology has been sold. Phase 2: Lean Burn Technology with Exhaust Waste Heat Recovery (WHR) System Key Technologies: Advanced Ignition System, Combustion Improvement, Integrated Waste Heat Recovery System. Base engine technologies intended for production within 2 to 3 years Phase 3: Lean Burn Technology with Exhaust and Charge Air Waste Heat Recovery System Key Technologies: Lower Friction, New Cylinder Head Designs, Improved Integrated Waste Heat Recovery System. Intended for production within 5 to 6 years Cummins is committed to the launch of next generation of large advanced NG engines based on ARES technology to be commercialized worldwide.

Pike, Edward

2014-03-31T23:59:59.000Z

79

Advanced CFD Models for High Efficiency Compression Ignition Engines  

Broader source: Energy.gov [DOE]

Advanced CFD models for high efficiency compression-ignition engines can be used to show how turbulence-chemistry interactions influence autoignition and combustion.

80

Axial cylinder internal combustion engine  

SciTech Connect (OSTI)

This patent describes improvement in a barrel type internal combustion engine including an engine block having axial-positioned cylinders with reciprocating pistons arranged in a circular pattern: a drive shaft concentrically positioned within the cylinder block having an offset portion extending outside the cylinder block; a wobble spider rotatably journaled to the offset portion; connecting rods for each cylinder connecting each piston to the wobble spider. The improvement comprising: a first sleeve bearing means supporting the drive shaft in the engine block in a cantilevered manner for radial loads; a second sleeve bearing means rotatably supporting the wobble spider on the offset portion of the drive shaft for radial loads; a first roller bearing means positioned between the offset portion of the drive shaft and the wobble spider carrying thrust loadings only; a second roller bearing means carrying thrust loads only reacting to the first roller bearing located on the opposite end of the driveshaft between the shaft and the engine block.

Gonzalez, C.

1992-03-10T23:59:59.000Z

Note: This page contains sample records for the topic "advanced combustion engines" 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

Internal combustion engine intake valve  

SciTech Connect (OSTI)

In a inlet valve for use in an internal combustion engine in which the valve has a stem and a head, the head having, when seated, a first side positioned within a combustion chamber of an engine block and a second, opposite, side attached to the stem, the second side including that piston of the head forming the seat with the engine block when the valve is in a seated position, and first side including that portion of the head from the seat toward the chamber when the valve is in the seated position, and the engine including means for moving the valve from the closed position to an open position to allow a fuel mixture to enter the chamber, the improvement in the valve comprising: an extension ridge from the first side, positioned in alignment with the periphery of the valve head, the ridge forming with the seat a single, continuous, smooth outer surface along the periphery thereof for reducing the coefficient of drag of the fuel entering the chamber around the valve head when the valve is in the open position.

Mosler, W.B.

1988-10-25T23:59:59.000Z

82

Modeling of Combustion Processes in Internal Combustion Engines  

Science Journals Connector (OSTI)

Improving internal combustion engines (ICE) and increasing the quality of operation are linked with the necessity of maximally increasing the degree of compression. For ICE with spark ignition (otto cycle), th...

V. A. Vinokurov; V. A. Kaminskii; V. A. Frost…

2000-11-01T23:59:59.000Z

83

Method of combustion for dual fuel engine  

DOE Patents [OSTI]

Apparatus and a method of introducing a primary fuel, which may be a coal water slurry, and a high combustion auxiliary fuel, which may be a conventional diesel oil, into an internal combustion diesel engine comprises detecting the load conditions of the engine, determining the amount of time prior to the top dead center position of the piston to inject the main fuel into the combustion chamber, and determining the relationship of the timing of the injection of the auxiliary fuel into the combustion chamber to achieve a predetermined specific fuel consumption, a predetermined combustion efficiency, and a predetermined peak cylinder firing pressure. 19 figures.

Hsu, B.D.; Confer, G.L.; Zujing Shen; Hapeman, M.J.; Flynn, P.L.

1993-12-21T23:59:59.000Z

84

Method of combustion for dual fuel engine  

DOE Patents [OSTI]

Apparatus and a method of introducing a primary fuel, which may be a coal water slutty, and a high combustion auxiliary fuel, which may be a conventional diesel oil, into an internal combustion diesel engine comprises detecting the load conditions of the engine, determining the amount of time prior to the top dead center position of the piston to inject the main fuel into the combustion chamber, and determining the relationship of the timing of the injection of the auxiliary fuel into the combustion chamber to achieve a predetermined specific fuel consumption, a predetermined combustion efficiency, and a predetermined peak cylinder firing pressure.

Hsu, Bertrand D. (Erie, PA); Confer, Gregory L. (Erie, PA); Shen, Zujing (Erie, PA); Hapeman, Martin J. (Edinboro, PA); Flynn, Paul L. (Fairview, PA)

1993-12-21T23:59:59.000Z

85

Virtual Design of Stirling Engine Combustion Chamber  

Science Journals Connector (OSTI)

The paper deals with the designing of a combustion chamber of the Stirling engine using the CFD approach. Virtual prototypes enabled ... . The presented results help to increase the Stirling engine efficiency tog...

Z. Kaplan; P. Novotný; V. Píšt?k

2010-01-01T23:59:59.000Z

86

Advanced Combustion Technology to Enable High Efficiency Clean...  

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

Combustion System + Air Handling Air Handling + Sensors + Calibration Low P, High Flow Rate EGR + VVA - Simulated Robustness Advanced Combustion Concepts - Simulated 0.0...

87

Advanced Diesel Combustion with Low Hydrocarbon and Carbon Monoxide...  

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

Combustion with Low Hydrocarbon and Carbon Monoxide Emissions Advanced Diesel Combustion with Low Hydrocarbon and Carbon Monoxide Emissions Poster presented at the 16th Directions...

88

Combustion Modeling for Diesel Engine Control Design  

E-Print Network [OSTI]

Combustion Modeling for Diesel Engine Control Design Von der Fakult¨at f¨ur Maschinenwesen der Combustion Modeling for Diesel Engine Control Design WICHTIG: D 82 überprüfen !!! #12;Bibliographic research stays at General Motors R&D in Warren, MI, USA, possible. Furthermore, I would like thank Tom

Peters, Norbert

89

Vehicle Technologies Office Merit Review 2014: Advancement in Fuel Spray and Combustion Modeling for Compression Ignition Engine Applications  

Broader source: Energy.gov [DOE]

Presentation given by Argonne National Laboratory at 2014 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Office Annual Merit Review and Peer Evaluation Meeting about advancement in...

90

Overview of Sonex Combustion Systems (SCS) for DI Engines | Department...  

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

Sonex Combustion Systems (SCS) for DI Engines Overview of Sonex Combustion Systems (SCS) for DI Engines The SCS system has undergone computational and experimental verification and...

91

Complete Fuel Combustion for Diesel Engines Resulting in Greatly...  

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

Complete Fuel Combustion for Diesel Engines Resulting in Greatly Reduced Emissions and Improved Fuel Efficiency Complete Fuel Combustion for Diesel Engines Resulting in Greatly...

92

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...

93

Combustion Exhaust Gas Heat to Power Using Thermoelectric Engines...  

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

Combustion Exhaust Gas Heat to Power Using Thermoelectric Engines Combustion Exhaust Gas Heat to Power Using Thermoelectric Engines Discusses a novel TEG which utilizes a...

94

Exhaust gas recirculation for advanced diesel combustion cycles  

Science Journals Connector (OSTI)

Abstract Modern diesel engines tend to utilize significantly large quantities of exhaust gas recirculation (EGR) and high intake pressures across the engine load range to meet \\{NOx\\} targets. At such high EGR rates, the combustion process and exhaust emissions tend to exhibit a marked sensitivity to small changes in the EGR quantity, resulting in unintended deviations from the desired engine performance characteristics (energy efficiency, emissions, stability). An accurate estimation of EGR and its effect on the intake dilution are, therefore, necessary to enable its application during transient engine operation or unstable combustion regimes. In this research, a detailed analysis that includes estimation of the transient (cycle-by-cycle) build-up of EGR and the time (engine cycles) required to reach the steady-state EGR operation has been carried out. One-step global equations to calculate the transient and steady-state gas concentrations in the intake and exhaust are proposed. The effects of engine load and intake pressure on EGR have been examined and explained in terms of intake charge dilution and in-cylinder excess-air ratio. The EGR analysis is validated against a wide range of empirical data that include low temperature combustion cycles, intake pressure and load sweeps. This research intends to not only formulate a clear understanding of EGR application for advanced diesel combustion but also to set forth guidelines for transient analysis of EGR.

Usman Asad; Ming Zheng

2014-01-01T23:59:59.000Z

95

Argonne TTRDC - Engines - Combustion Visualization - emissions,  

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

Combustion Visualization Combustion Visualization Exploring Combustion Using Advanced Imaging Techniques In the photo, the GM diesel test cell is shown with vehicle exhaust aftertreatment hardware (diesel particulate filtration and diesel oxidation catalyst) along with other advanced technology-such as a variable geometry turbocharger, cooled exhaust gas recirculation and a common-rail fuel injection system. Fig. 1. The GM diesel test cell is shown with vehicle exhaust aftertreatment hardware (diesel particulate filtration and diesel oxidation catalyst) along with other advanced technology-such as a variable geometry turbocharger, cooled exhaust gas recirculation and a common-rail fuel injection system. Two-dimensional image of hydrogen combustion OH chemiluminescence. Fig. 2. Two-dimensional image of hydrogen combustion OH chemiluminescence.

96

Non-Petroleum Based Fuel Effects on Advanced Combustion (Agreement...  

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

Non-Petroleum Based Fuel Effects on Advanced Combustion (Agreement 13425) Non-Petroleum Based Fuel Effects on Advanced Combustion (Agreement 13425) Presentation from the U.S. DOE...

97

Light-Duty Advanced Diesel Combustion Research | Department of...  

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

Light-Duty Advanced Diesel Combustion Research Light-Duty Advanced Diesel Combustion Research Presentation from the U.S. DOE Office of Vehicle Technologies "Mega" Merit Review 2008...

98

Nitrogen enriched combustion of a natural gas internal combustion engine to reduce NO.sub.x emissions  

DOE Patents [OSTI]

A method and system for reducing nitrous oxide emissions from an internal combustion engine. An input gas stream of natural gas includes a nitrogen gas enrichment which reduces nitrous oxide emissions. In addition ignition timing for gas combustion is advanced to improve FCE while maintaining lower nitrous oxide emissions.

Biruduganti, Munidhar S. (Naperville, IL); Gupta, Sreenath Borra (Naperville, IL); Sekar, R. Raj (Naperville, IL); McConnell, Steven S. (Shorewood, IL)

2008-11-25T23:59:59.000Z

99

Method and system for controlled combustion engines  

DOE Patents [OSTI]

A system for controlling combustion in internal combustion engines of both the Diesel or Otto type, which relies on establishing fluid dynamic conditions and structures wherein fuel and air are entrained, mixed and caused to be ignited in the interior of a multiplicity of eddies, and where these structures are caused to sequentially fill the headspace of the cylinders.

Oppenheim, A. K. (Berkeley, CA)

1990-01-01T23:59:59.000Z

100

Advances in pulverized coal combustion  

SciTech Connect (OSTI)

A combustion system has been developed to operate cost effectively in the difficult regulatory and economic climate of the 1980's. The system is designed to reduce auxiliary fuel oil comsumption by at least 30% while meeting all relevant emissions limits. This is achieved with the fewest components consistent with practical reliable design criteria. The Controlled Flow Split/Flame low NO/sub x/ burner, MBF pulverizer and Two-Stage ignition system are integrated into a mutually supporting system which is applicable to both new steam generators and, on a retrofit basis, to existing units. In the future, a pulverized coal ignition system will be available to eliminate fuel oil use within the boiler.

Vatsky, J.

1981-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "advanced combustion engines" 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

Starting apparatus for internal combustion engines  

DOE Patents [OSTI]

This report is a patent description for a system to start an internal combustion engine. Remote starting and starting by hearing impaired persons are addressed. The system monitors the amount of current being drawn by the starter motor to determine when the engine is started. When the engine is started the system automatically deactivates the starter motor. Five figures are included.

Dyches, G.M.; Dudar, A.M.

1995-01-01T23:59:59.000Z

102

Coal fuel slurry for internal combustion engines  

Science Journals Connector (OSTI)

A technoeconomic study of the production of coal-water fuel slurry for internal combustion engines and thermal power plants was performed. Based on the accumulated experimental data, it was found that, in the ...

N. I. Red’kina; G. S. Khodakov; E. G. Gorlov

2013-09-01T23:59:59.000Z

103

Past experiences with automotive external combustion engines  

SciTech Connect (OSTI)

GMR (General Motors Research Laboratories, now GM R and D Center) has a history of improving the internal combustion engine, especially as it relates to automotive use. During the quarter century from 1950--75, considerable effort was devoted to evaluating alternative powerplants based on thermodynamic cycles different from those on which the established spark-ignition and diesel engines are founded. Two of these, the steam engine and the Stirling engine, incorporated external combustion. Research on those two alternatives is reviewed. Both were judged to fall short of current needs for commercial success as prime movers for conventional automotive vehicles.

Amann, C.A.

1999-07-01T23:59:59.000Z

104

Computationally Efficient Modeling of High-Efficiency Clean Combustion Engines  

Broader source: Energy.gov [DOE]

Document:  ace012_flowers_2013_o.pdfTechnology Area: Advanced Combustion; Combustion and Emissions ControlPresenter: Dan FlowersPresenting Organization: Lawrence Livermore National Laboratory (LLNL...

105

E-Print Network 3.0 - advanced wall-fired combustion Sample Search...  

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

Biomass and Animal Waste Combustion Energy Engine Emission Fuel Cells... Gasification Internal Combustion Engine Performance Pollutants Formation (NOx, Hg) and...

106

Marine propulsion device internal combustion engine  

SciTech Connect (OSTI)

This patent describes an internal combustion engine. It comprises an engine block including a surface, means including the engine block surface for defining a substantially sealed chamber, and pressure relief means including a movable valve member for venting the chamber when the pressure in the chamber exceeds a predetermined value, the chamber containing one of the following: a flywheel, means for generating an electrical current, a finned heat exchanger, and means for starting the engine.

Anderson, P.A.; Bernau, W.A.; Breckenfeld, P.W.; Broughton, G.L.

1992-01-07T23:59:59.000Z

107

ME 374C Combustion Engine Processes ABET EC2000 syllabus  

E-Print Network [OSTI]

combustion engines, fuels, carburetion, combustion, exhaust emissions, knock, fuel injection, and factors engine, although diesels and 2-strokes are also discussed. Topics Covered (# of classes per topic): 1 of an Engineering System 4. Introduction to Engine Modeling 5. Fuels 6. Combustion and Knock 7. 4-stroke SI Engines

Ben-Yakar, Adela

108

2.61 Internal Combustion Engines, Spring 2004  

E-Print Network [OSTI]

Fundamentals of how the design and operation of internal combustion engines affect their performance, operation, fuel requirements, and environmental impact. Study of fluid flow, thermodynamics, combustion, heat transfer ...

Heywood, John B.

109

Advanced Combustion R&D Selections  

Broader source: Energy.gov [DOE]

In 2013, the Department of Energy made several project selections under the Fossil Energy Advanced Combustion R&D program. Through these four selections, nearly $37 million, $26 million from the Energy Department and $11 million in cost-share from industry, universities, and other research institutions, are being committed over four years to address CO2 compliance required by the proposed regulations to reduce CO2 emissions.

110

Jet plume injection and combustion system for internal combustion engines  

DOE Patents [OSTI]

An improved combustion system for an internal combustion engine is disclosed wherein a rich air/fuel mixture is furnished at high pressure to one or more jet plume generator cavities adjacent to a cylinder and then injected through one or more orifices from the cavities into the head space of the cylinder to form one or more turbulent jet plumes in the head space of the cylinder prior to ignition of the rich air/fuel mixture in the cavity of the jet plume generator. The portion of the rich air/fuel mixture remaining in the cavity of the generator is then ignited to provide a secondary jet, comprising incomplete combustion products which are injected into the cylinder to initiate combustion in the already formed turbulent jet plume. Formation of the turbulent jet plume in the head space of the cylinder prior to ignition has been found to yield a higher maximum combustion pressure in the cylinder, as well as shortening the time period to attain such a maximum pressure.

Oppenheim, Antoni K. (Kensington, CA); Maxson, James A. (Berkeley, CA); Hensinger, David M. (Albany, CA)

1993-01-01T23:59:59.000Z

111

Hydrogen Internal Combustion Engine (ICE) Vehicle Testing Activities  

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

Internal Combustion Internal Combustion Engine (ICE) Vehicle Testing Activities James Francfort Idaho National Laboratory 2 Paper #2006-01-0433 Presentation Outline Background and goal APS Alternative Fuel (Hydrogen) Pilot Plant - design and operations Fuel dispensing and prototype dispenser Hydrogen (H2) and HCNG (compressed natural gas) internal combustion engine (ICE) vehicle testing WWW Information 3 Paper #2006-01-0433 Background Advanced Vehicle Testing Activity (AVTA) is part of DOE's FreedomCAR and Vehicle Technologies Program These activities are conducted by the Idaho National Laboratory (INL) and the AVTA testing partner Electric Transportation Applications (ETA) 4 Paper #2006-01-0433 AVTA Goal Provide benchmark data for technology modeling, research and development programs, and help fleet managers and

112

Impacts of Advanced Combustion Engines  

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

HTML, EMSL Office of Science 6 Managed by UT-Battelle for the U.S. Department of Energy Milestones Date MilestoneDeliverables Status June 2014 Complete fuel economy...

113

Fuels for Advanced Combustion Engines  

Broader source: Energy.gov [DOE]

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

114

Classical combustion diagnostics for engine research  

SciTech Connect (OSTI)

The use of engine diagnostic techniques in research on the reciprocating internal combustion engine has contributed substantially to engine progress over the years. Many of these techniques were developed before the advent of the laser, and most engine research still uses these classical methods. This paper provides historical snapshots of efforts to understand flame propagation and knock in homogeneous-charge engines, and fuel-air mixing and some of its ramifications in diesels. Such a review demonstrates the accomplishments facilitated by measurement of pressure, temperature, fluid motions, and chemistry within the cylinder. A critique of these classical diagnostics is then offered.

Amann, C.A.

1985-01-01T23:59:59.000Z

115

Combustion Commonality and Differences Between HSDI and Heavy Duty Truck Engines  

SciTech Connect (OSTI)

Experimental understanding of the diesel spray and combustion process at the fundamental level has helped advance the virtual lab simulation tools. The computational fluid dynamics (CFD)-based simulation has been globally verified in many engines, providing substantial credibility to the use of this technology in advanced engine development. This paper highlights the common aspects and differences between the smallbore HSDI and the larger displacement heavy-duty truck engine spray and combustion processes. Implications for combustion system strategies will be delineated. Detroit Diesel integrated ''Wired'' approach will be explained with pointers towards future tool enhancements.

Chen, Rong

2000-08-20T23:59:59.000Z

116

Vehicle Technologies Office Merit Review 2014: Advanced Combustion and Fuels  

Broader source: Energy.gov [DOE]

Presentation given by NREL at 2014 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Office Annual Merit Review and Peer Evaluation Meeting about advanced combustion and fuels.

117

Advancement in Fuel Spray and Combustion Modeling for Compression...  

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

Spray, Combustion, & Emission Modeling using KH-ACT Primary Breakup Model & Detailed Chemistry Vehicle Technologies Office Merit Review 2014: Advancement in Fuel Spray and...

118

Gasoline-Like Fuel Effects on Advanced Combustion Regimes | Department...  

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

Regimes Gasoline-Like Fuel Effects on Advanced Combustion Regimes 2012 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer...

119

Gasoline-like fuel effects on advanced combustion regimes | Department...  

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

regimes Gasoline-like fuel effects on advanced combustion regimes 2011 DOE Hydrogen and Fuel Cells Program, and Vehicle Technologies Program Annual Merit Review and Peer...

120

Application of advanced hydrocarbon characterization and its...  

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

on future fuel properties and advanced combustion research Research on future fuels chemistry and effects on combustion in advanced internal combustion engines p-14gieleciak.pdf...

Note: This page contains sample records for the topic "advanced combustion engines" 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

Advances in Diode Laser Absorption Sensors for Combustion and Propulsion  

Science Journals Connector (OSTI)

Progress is reported in the evolution of diode laser sensors for combustion and propulsion systems. Applications are diverse, ranging from IC engines and gas turbine combustors to...

Hanson, Ronald K

122

Advanced Diesel Combustion with Low Hydrocarbon and Carbon Monoxide...  

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

Combustion with Low Hydrocarbon and Carbon Monoxide Emissions Poster Location P-19 Gregory K. Lilik, Andr L. Boehman Department of Energy & Mineral Engineering EMS Energy...

123

Characterization of Particulate Emissions from GDI Engine Combustion...  

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

Emissions from GDI Engine Combustion with Alcohol-blended Fuels Analysis showed that gasoline direct injection engine particulates from alcohol-blended fuels are significantly...

124

BIBLIOGRAPHY ON INTERNAL COMBUSTION ENGINES 1. F. Obert, Internal Combustion Engines and Air Pollution, Intext Educational Publishers, 1973  

E-Print Network [OSTI]

engines, now somewhat dated.) 6. M. Khovakh (general editor) Motor Vehicle Engines. English translation, Akademiai Kaido:Budapest, 1974. (A monograph on heat transfer in spark-ignition and diesel enginesBIBLIOGRAPHY ON INTERNAL COMBUSTION ENGINES 1. F. Obert, Internal Combustion Engines and Air

Goldwasser, Shafi

125

Electronic governor for an internal combustion engine  

SciTech Connect (OSTI)

An electronic governor for an internal combustion engine provided with a fuel injection pump for supplying fuel to the engine and having a control rack for adjusting fuel injection amount is described comprising, means providing a designated speed signal Vno indicative of the desired rotational speed No of the internal combustion engine, a speed detector detecting the rotational speed N of the internal combustion engine and producing the speed detection signal Vn indicative of the rotational speed N, a rack position detector detecting the position of the rack and producing a rack position detection signal VL indicative of the position of the rack, a speed deviation operation circuit responsive to the speed detection signal Vn for producing a constant speed control signal Vnd for effecting control to maintain the deviation of the actual rotational speed N from the designated rotational speed No within a permissible range, a rack position deviation operation circuit for producing a maximum rack position control signal VLd for effecting control to maintain the deviation of the rack position, a control mode selector and means responsive to the output of the control mode selector for controlling the rack to cause the deviation of the actual rotational speed N from the designated rotational speed No or the rack position from the maximum rack position to be within a certain range.

Nanjyo, H.; Suzuki, H.

1987-11-24T23:59:59.000Z

126

Low-Temperature Automotive Diesel Combustion | Department of...  

Office of Environmental Management (EM)

in Low Temperature Automotive Diesel Combustion Systems Mixture Formation in a Light-Duty Diesel Engine Light Duty Combustion Research: Advanced Light-Duty Combustion Experiments...

127

Diesel Engine Combustion of Biomass Pyrolysis Oils  

Science Journals Connector (OSTI)

Biomass pyrolysis oils are manufactured through a moderate-temperature process (?500 °C) in which the biomass feedstock is subjected to rapid heating in the absence of air, where it vaporizes, cracks, and is condensed after a short residence time (?500 ms) into a dark brown liquid composed of a complex mixture of oxygenated hydrocarbons whose heating value is approximately half that of No. 2 diesel fuel. ... The combustion air inlet temperature can be preheated up to 130 °C through the use of an in-line electric heater, which allows engine operation with fuels that have long ignition delay, without relying on any ignition additives. ... Their data showed that in addition to reducing the peak heat release magnitude, slower chemical kinetics resulted in reduced rate of instantaneous heat release (the slope of the instantaneous heat release curve) in the early combustion phase, resulting in delayed peak heat release timing relative to SOC. ...

Alan Shihadeh; Simone Hochgreb

2000-02-15T23:59:59.000Z

128

Simulation of High Efficiency Clean Combustion Engines and Detailed...  

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

continuing work on exploring fuel chemistry, analysis of advanced combustion regimes, and improvements in simulation methodologies deer12flowers.pdf More Documents & Publications...

129

Advanced Materials for Mercury 50 Gas Turbine Combustion System  

SciTech Connect (OSTI)

Solar Turbines Incorporated (Solar), under cooperative agreement number DE-FC26-0CH11049, has conducted development activities to improve the durability of the Mercury 50 combustion system to 30,000 hours life and reduced life cycle costs. This project is part of Advanced Materials in the Advanced Industrial Gas Turbines program in DOE's Office of Distributed Energy. The targeted development engine was the Mercury{trademark} 50 gas turbine, which was developed by Solar under the DOE Advanced Turbine Systems program (DOE contract number DE-FC21-95MC31173). As a generator set, the Mercury 50 is used for distributed power and combined heat and power generation and is designed to achieve 38.5% electrical efficiency, reduced cost of electricity, and single digit emissions. The original program goal was 20,000 hours life, however, this goal was increased to be consistent with Solar's standard 30,000 hour time before overhaul for production engines. Through changes to the combustor design to incorporate effusion cooling in the Generation 3 Mercury 50 engine, which resulted in a drop in the combustor wall temperature, the current standard thermal barrier coated liner was predicted to have 18,000 hours life. With the addition of the advanced materials technology being evaluated under this program, the combustor life is predicted to be over 30,000 hours. The ultimate goal of the program was to demonstrate a fully integrated Mercury 50 combustion system, modified with advanced materials technologies, at a host site for a minimum of 4,000 hours. Solar was the Prime Contractor on the program team, which includes participation of other gas turbine manufacturers, various advanced material and coating suppliers, nationally recognized test laboratories, and multiple industrial end-user field demonstration sites. The program focused on a dual path development route to define an optimum mix of technologies for the Mercury 50 and future gas turbine products. For liner and injector development, multiple concepts including high thermal resistance thermal barrier coatings (TBC), oxide dispersion strengthened (ODS) alloys, continuous fiber ceramic composites (CFCC), and monolithic ceramics were evaluated before down-selection to the most promising candidate materials for field evaluation. Preliminary, component and sub-scale testing was conducted to determine material properties and demonstrate proof-of-concept. Full-scale rig and engine testing was used to validated engine performance prior to field evaluation at a Qualcomm Inc. cogeneration site located in San Diego, California. To ensure that the CFCC liners with the EBC proposed under this program would meet the target life, field evaluations of ceramic matrix composite liners in Centaur{reg_sign} 50 gas turbine engines, which had previously been conducted under the DOE sponsored Ceramic Stationary Gas Turbine program (DE-AC02-92CE40960), was continued under this program at commercial end-user sites under Program Subtask 1A - Extended CFCC Materials Durability Testing. The goal of these field demonstrations was to demonstrate significant component life, with milestones of 20,000 and 30,000 hours. Solar personnel monitor the condition of the liners at the field demonstration sites through periodic borescope inspections and emissions measurements. This program was highly successful at evaluating advanced materials and down-selecting promising solutions for use in gas turbine combustions systems. The addition of the advanced materials technology has enabled the predicted life of the Mercury 50 combustion system to reach 30,000 hours, which is Solar's typical time before overhaul for production engines. In particular, a 40 mil thick advanced Thermal Barrier Coating (TBC) system was selected over various other TBC systems, ODS liners and CFCC liners for the 4,000-hour field evaluation under the program. This advanced TBC is now production bill-of-material at various thicknesses up to 40 mils for all of Solar's advanced backside-cooled combustor liners (Centaur 50, Taurus 60, Mars 100, Taurus 70,

Price, Jeffrey

2008-09-30T23:59:59.000Z

130

Advanced Diagnostics for High Pressure Spray Combustion.  

SciTech Connect (OSTI)

The development of accurate predictive engine simulations requires experimental data to both inform and validate the models, but very limited information is presently available about the chemical structure of high pressure spray flames under engine- relevant conditions. Probing such flames for chemical information using non- intrusive optical methods or intrusive sampling techniques, however, is challenging because of the physical and optical harshness of the environment. This work details two new diagnostics that have been developed and deployed to obtain quantitative species concentrations and soot volume fractions from a high-pressure combusting spray. A high-speed, high-pressure sampling system was developed to extract gaseous species (including soot precursor species) from within the flame for offline analysis by time-of-flight mass spectrometry. A high-speed multi-wavelength optical extinction diagnostic was also developed to quantify transient and quasi-steady soot processes. High-pressure sampling and offline characterization of gas-phase species formed following the pre-burn event was accomplished as well as characterization of gas-phase species present in the lift-off region of a high-pressure n-dodecane spray flame. For the initial samples discussed in this work several species were identified, including polycyclic aromatic hydrocarbons (PAH); however, quantitative mole fractions were not determined. Nevertheless, the diagnostic developed here does have this capability. Quantitative, time-resolved measurements of soot extinction were also accomplished and the novel use of multiple incident wavelengths proved valuable toward characterizing changes in soot optical properties within different regions of the spray flame.

Skeen, Scott A.; Manin, Julien Luc; Pickett, Lyle M.

2014-06-01T23:59:59.000Z

131

Vehicle Technologies Office: Advanced Combustion Strategies ...  

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

element of LTC - is achieved by controlling the timing of the autoignition and rate of heat release. This process works to eliminate excessive combustion rates that can cause...

132

Advanced Control Methodology for Biomass Combustion.  

E-Print Network [OSTI]

??This thesis presents a feasibility study for a low cost sensor-based combustion control system using a predictive chemical kinetic model that captures efficiencies and pollution… (more)

Bjornsson, Stefan

2014-01-01T23:59:59.000Z

133

LabVIEW internal combustion engine detonation frequency analysis.  

E-Print Network [OSTI]

??The project discussed herein is to develop the hardware and software necessary to identify the detonation frequency of a BMW S14 internal combustion engine. This… (more)

McClain, Kevin

2011-01-01T23:59:59.000Z

134

NREL: Transportation Research - Fuel Combustion and Engine Performance  

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

Fuel Combustion and Engine Performance Photo of a gasoline direct injection piston with injector. NREL studies the effects of new fuel properties on performance and emissions in...

135

Corrosion performance of materials for advanced combustion systems  

SciTech Connect (OSTI)

Conceptual designs of advanced combustion systems that utilize coal as a feedstock require high-temperature furnaces and heat transfer surfaces capable of operating at much higher temperatures than those in current coal-fired power plants. The combination of elevated temperatures and hostile combustion environments requires development and application of advanced ceramic materials for heat exchangers in these designs. This paper characterizes the chemistry of coal-fired combustion environments over the wide temperature range of interest in these systems and discusses some of the experimental results for several materials obtained from laboratory tests and from exposures in a pilot-scale facility.

Natesan, K. [Argonne National Lab., IL (United States); Freeman, M.; Mathur, M. [Pittsburgh Energy Technology Center, PA (United States)

1995-05-01T23:59:59.000Z

136

Control of Combustion Processes in an Internal Combustion Engine by Low-Temperature Plasma  

Science Journals Connector (OSTI)

A new method of operation of internal combustion engines enhances power and reduces fuel consumption and exhaust toxicity. Low-temperature plasma control combines working processes of thermal engines and steam machines into a single process.

E. A. Olenev

2002-07-01T23:59:59.000Z

137

Control of Combustion Processes in an Internal Combustion Engine by Low-Temperature Plasma  

Science Journals Connector (OSTI)

A new method of operation of internal combustion engines enhances power and reduces fuel consumption and exhaust toxicity. Low-temperature plasma control combines working processes of thermal engines and steam...

E. A. Olenev

2002-07-01T23:59:59.000Z

138

Using Parametrized Finite Combustion Stage Models to Characterize Combustion in Diesel Engines  

Science Journals Connector (OSTI)

Characterizing combustion in diesel engines is not only necessary when researching the instantaneous combustion phenomena but also when investigating the change of the combustion process under variable engine operating conditions. ... This project partly is financially supported by the Fundamental Research Funds for the Central Universities, Harbin Engineering University, China, HEUCF120307, and the International Science and Technology Cooperation Program of China. ... Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy (2011), 225 (3), 309-318 CODEN: PMAEET; ISSN:0957-6509. ...

Yu Ding; Douwe Stapersma; Hugo Grimmelius

2012-10-29T23:59:59.000Z

139

Exergy analysis of combustion characteristics and NOx emissions of a dual-fuel engine  

Science Journals Connector (OSTI)

The combustion characteristics and NOx emissions of compression ignition engines working on a dual fuel mode are investigated numerically and their exergetic efficiencies are determined. The model has been validated with available experimental results. The simulation results show that dual fuel engine combustion and trend of NOx emissions are well predicted by the present model. Parametric study showed improvements in engine performance and an increase in NOx emissions with decreased advanced injection timing of the pilot fuel as well as with increased intake temperature and pilot fuel quantity. The maximum values for energy and exergy are found to be comparable.

Mohamed H. Morsy; Abdelrahman El-Leathy; Arif Hepbasli

2012-01-01T23:59:59.000Z

140

Advanced Natural Gas Reciprocating Engines (ARES) - Presentation...  

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

Advanced Natural Gas Reciprocating Engines (ARES) - Presentation by Caterpillar, Inc., June 2011 Advanced Natural Gas Reciprocating Engines (ARES) - Presentation by Caterpillar,...

Note: This page contains sample records for the topic "advanced combustion engines" 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

Advanced Natural Gas Reciprocating Engines (ARES) - Presentation...  

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

Cummins, Inc., June 2011 Advanced Natural Gas Reciprocating Engines (ARES) - Presentation by Cummins, Inc., June 2011 Presentation on Advanced Natural Gas Reciprocating Engines...

142

HICEV AMERICA: HYDROGEN INTERNAL COMBUSTION ENGINE  

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

HICEV AMERICA: HICEV AMERICA: HYDROGEN INTERNAL COMBUSTION ENGINE VEHICLE (HICEV) TECHNICAL SPECIFICATIONS Revision 0 November 1, 2004 Prepared by Electric Transportation Applications HICEV America Vehicle Specification i TABLE OF CONTENTS Minimum Vehicle Requirements 1 1. Regulatory Requirements 7 2. Chassis 8 3. Vehicle Characteristics 10 4. Drive System 11 5. Vehicle Performance 12 6. Hydrogen Fuel Storage System (HFSS) 14 7. Additional Vehicle Systems 17 8. Documentation 18 Appendices Appendix A - Vehicle Data 19 Appendix B - FMVSS Certification Methodology 26 DB12/7/04 HICEV America Vehicle Specification 2 MINIMUM VEHICLE REQUIREMENTS The HICEV America Program is sponsored by the U.S. Department of Energy Office of Transportation Technology to provide for independent assessment of hydrogen fueled, internal

143

Optimal internal combustion engine tuning utilizing perturbation/correlation  

E-Print Network [OSTI]

OPTIMAL INTERNAL COMBUSTION ENGINE TUNING UTILIZING PERTURBATION/CORRELATION A Thesis by BRIAN DANIEL PAUTLER Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree... of MASTER OF SCIENCE May 2003 Major Subject: Mechanical Engineering OPTIMAL INTERNAL COMBUSTION ENGINE TUNING UTILIZING PERTURBATION/CORRELATION A Thesis by BRIAN DANIEL PAUTLER Submitted to the Office of Graduate Studies of Texas A&M Umversity...

Brian Daniel Pautler

2012-06-07T23:59:59.000Z

144

Assessment of Combustion and Turbulence Models for the Simulation of Combustion Processes in a DI Diesel Engine  

Broader source: Energy.gov [DOE]

Various applied combustion and turbulence models were investigated along with chemical kinetic mechanisms simulating a biodiesel-fueled engine

145

Development of Advanced Small Hydrogen Engines  

SciTech Connect (OSTI)

The main objective of the project is to develop advanced, low cost conversions of small (< 25 hp) gasoline internal combustion engines (ICEs) to run on hydrogen fuel while maintaining the same performance and durability. This final technical report summarizes the results of i) the details of the conversion of several small gasoline ICEs to run on hydrogen, ii) the durability test of a converted hydrogen engine and iii) the demonstration of a prototype bundled canister solid hydrogen storage system. Peak power of the hydrogen engine achieves 60% of the power output of the gasoline counterpart. The efforts to boost the engine power with various options including installing the over-sized turbocharger, retrofit of custom-made pistons with high compression ratio, an advanced ignition system, and various types of fuel injection systems are not realized. A converted Honda GC160 engine with ACS system to run with hydrogen fuel is successful. Total accumulative runtime is 785 hours. A prototype bundled canister solid hydrogen storage system having nominal capacity of 1.2 kg is designed, constructed and demonstrated. It is capable of supporting a wide range of output load of a hydrogen generator.

Krishna Sapru; Zhaosheng Tan; Ben Chao

2010-09-30T23:59:59.000Z

146

Advanced Circulating Pressurized Fluidized Bed Combustion (APFBC) Repowering Considerations  

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

Weinstein & Travers: APFBC Repowering Considerations Weinstein & Travers: APFBC Repowering Considerations paper 970563 Page 1 of 35 Advanced Circulating Pressurized Fluidized Bed Combustion (APFBC) Repowering Considerations Richard E. Weinstein, P.E. Parsons Power Group Inc. Reading, Pennsylvania eMail: Richard_E_Weinstein@Parsons.COM / phone: 610 / 855-2699 Robert W. Travers, P.E. U.S. Department of Energy Office of Fossil Energy Germantown, Maryland eMail: Robert.Travers@HQ.DOE.GOV / phone: 301 / 903-6166 Weinstein & Travers: APFBC Repowering Considerations paper 970563 Page 2 of 35 Advanced Circulating Pressurized Fluidized Bed Combustion Repowering Considerations ABSTRACT ..............................................................................................................................................................................

147

Method of controlling cyclic variation in engine combustion  

DOE Patents [OSTI]

Cyclic variation in combustion of a lean burning engine is reduced by detecting an engine combustion event output such as torsional acceleration in a cylinder (i) at a combustion event (k), using the detected acceleration to predict a target acceleration for the cylinder at the next combustion event (k+1), modifying the target output by a correction term that is inversely proportional to the average phase of the combustion event output of cylinder (i) and calculating a control output such as fuel pulse width or spark timing necessary to achieve the target acceleration for cylinder (i) at combustion event (k+1) based on anti-correlation with the detected acceleration and spill-over effects from fueling. 27 figs.

Davis, L.I. Jr.; Daw, C.S.; Feldkamp, L.A.; Hoard, J.W.; Yuan, F.; Connolly, F.T.

1999-07-13T23:59:59.000Z

148

Solid fuel combustion system for gas turbine engine  

DOE Patents [OSTI]

A solid fuel, pressurized fluidized bed combustion system for a gas turbine engine includes a carbonizer outside of the engine for gasifying coal to a low Btu fuel gas in a first fraction of compressor discharge, a pressurized fluidized bed outside of the engine for combusting the char residue from the carbonizer in a second fraction of compressor discharge to produce low temperature vitiated air, and a fuel-rich, fuel-lean staged topping combustor inside the engine in a compressed air plenum thereof. Diversion of less than 100% of compressor discharge outside the engine minimizes the expense of fabricating and maintaining conduits for transferring high pressure and high temperature gas and incorporation of the topping combustor in the compressed air plenum of the engine minimizes the expense of modifying otherwise conventional gas turbine engines for solid fuel, pressurized fluidized bed combustion.

Wilkes, Colin (Lebanon, IN); Mongia, Hukam C. (Carmel, IN)

1993-01-01T23:59:59.000Z

149

Overview of Engine Combustion Research at Sandia National Laboratories  

SciTech Connect (OSTI)

The objectives of this paper are to describe the ongoing projects in diesel engine combustion research at Sandia National Laboratories' Combustion Research Facility and to detail recent experimental results. The approach we are employing is to assemble experimental hardware that mimic realistic engine geometries while enabling optical access. For example, we are using multi-cylinder engine heads or one-cylinder versions of production heads mated to one-cylinder engine blocks. Optical access is then obtained through a periscope in an exhaust valve, quartz windows in the piston crown, windows in spacer plates just below the head, or quartz cylinder liners. We have three diesel engine experiments supported by the Department of Energy, Office of Heavy Vehicle Technologies: a one-cylinder version of a Cummins heavy-duty engine, a diesel simulation facility, and a one-cylinder Caterpillar engine to evaluate combustion of alternative diesel fuels.

Robert W. Carling; Gurpreet Singh

1999-04-26T23:59:59.000Z

150

Boosting Small Engines to High Performance- Boosting Systems and Combustion Development Methodology  

Broader source: Energy.gov [DOE]

Overview on combustion approaches and challenges for smaller boosted engines to improve vehicle fuel economy, particularly downsizing gasoline engines

151

Corrosion performance of materials for advanced combustion systems  

SciTech Connect (OSTI)

Conceptual designs of advanced combustion systems that utilize coal as a feedstock require high-temperature furnaces and heat transfer surfaces capable of operating at more elevated temperatures than those prevalent in current coal-fired power plants. The combination of elevated temperatures and hostile combustion environments necessitates development/application of advanced ceramic materials in these designs. This report characterizes the chemistry of coal-fired combustion environments over the wide temperature range that is of interest in these systems and discusses preliminary experimental results on several materials (alumina, Hexoloy, SiC/SiC, SiC/Si{sub 3}N{sub 4}/Si{sub 3}N{sub 4}, ZIRCONIA, INCONEL 677 and 617) with potential for application in these systems.

Natesan, K.; Yanez-Herrero, M.; Fornasieri, C.

1993-12-01T23:59:59.000Z

152

Review and recent developments of laser ignition for internal combustion engines applications  

Science Journals Connector (OSTI)

Performance of future ignition system for internal combustion engines should be reliable and efficient to enhance and sustain combustion stability, since ignition not only initiates combustion but also influences subsequent combustion. Lean burn systems have been regarded as an advanced combustion approach that could improve thermal efficiency while reducing exhaust gas emissions. However, current engines cannot be operated sufficiently lean due to ignition related problems such as the sluggish flame initiation and propagation along with potential misfiring. A high exhaust gas recirculation engines also has similar potential for emissions improvement, but could also experience similar ignition problems, particularly at idle operation. Similarly, ignition is an important design factor in gas turbine and rocket combustor. Recently, non-conventional ignition techniques such as laser-induced ignition methods have become an attractive field of research in order to replace the conventional spark ignition systems. The fundamentals of conventional laser-induced spark ignition have been previously reviewed. Therefore, the objective of this article is to review progress on the use of such innovative techniques of laser-induced ignition including laser-induced cavity ignition and laser-induced multi-point ignition. In addition, emphasis is given to recent work to explore the feasibility of this interesting technology for practical applications concerning internal combustion engines.

Mohamed H. Morsy

2012-01-01T23:59:59.000Z

153

FE's Advanced Combustion R&D Seeks Innovative Ways to Lower Cost...  

Energy Savers [EERE]

FE's Advanced Combustion R&D Seeks Innovative Ways to Lower Cost of Capturing Carbon Emissions from Coal Fired Power Plants FE's Advanced Combustion R&D Seeks Innovative Ways to...

154

Cooling system for internal combustion engines  

SciTech Connect (OSTI)

A cooling system for an internal combustion engine is described comprising: a head-side water jacket and a block-side water jacket made independent of each other; and a radiator and a cooling fan shared between the two water jackets. The improvement comprises: a first cooling water conduit for connecting the outlet of the head-side water jacket and the inlet of the radiator; a mixing valve having two water inlets and one water outlet; a second cooling water conduit for connecting one of the water inlets of the mixing valve and the outlet of the radiator; a third conduit for connecting the water outlet of the block-side water jacket and the remaining one of the water inlets of the mixing valve; a water pump, a fourth conduit branched midway from the second conduit and connected with the water inlet of the head-side water jacket; an auxiliary water pump; a fifth conduit branched midway from the third conduit and connected with the first conduit; one-way valve; and a control unit for controlling the mixing ratio of the mixing valve, the displacement of the auxiliary water pump and the operation of the cooling fan.

Itakura, M.

1988-07-26T23:59:59.000Z

155

Advances in Nuclear Engineering  

Science Journals Connector (OSTI)

... door, closed for fifteen years, to scientific and technical information about fission and nuclear reactors. In spite of the 1,000 papers published then, there was an enormous amount ... Engineering and Science Conference held in Philadelphia, March 1957, and comprise 130 papers on reactors, fuel and a few other matters, almost all the papers being of American origin ...

T. E. ALLIBONE

1958-07-26T23:59:59.000Z

156

US DRIVE Advanced Combustion and Emission Control Technical Team...  

Energy Savers [EERE]

for three major combustion strategies: (1) Low-Temperature Combustion, (2) Dilute Gasoline combustion, and (3) Clean Diesel Combustion. acecroadmapjune2013.pdf More Documents...

157

Methanol vaporization and injection system for internal combustion engine  

SciTech Connect (OSTI)

An engine equipped with an alcohol vaporization injection system operates as a four stroke cycle diesel engine that transfers the heat of exiting exhaust gases and cylinder head walls to the fuel. The engine runs on alcohol. The alcohol becomes vaporized and its pressure is high enough so that when a valve is opened between the high pressure fuel line and the combustion chamber (when it is at the peak of its compression ratio) enough alcohol will enter the combustion chamber to allow proper combustion. The overall advantages to this type of alcohol vaporization injection system is that it adds relatively few new mechanisms to the spark ignition four cycle internal combustion engine to enable it to operate as a diesel engine with a high thermal efficiency. This alcohol injection system exploits the engine's need for greater volumes of alcohol caused by the alcohol's relatively low heat of combustion (When compared to gasoline) by using this greater volume of fuel to return greater quantities of heat back to the engine to a much greater degree than other fuels can.

Bayley, R.I.

1980-05-06T23:59:59.000Z

158

Vehicle Technologies Office: FY 2005 Progress Report for Advanced  

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

5 Progress Report 5 Progress Report for Advanced Combustion Engine Technologies to someone by E-mail Share Vehicle Technologies Office: FY 2005 Progress Report for Advanced Combustion Engine Technologies on Facebook Tweet about Vehicle Technologies Office: FY 2005 Progress Report for Advanced Combustion Engine Technologies on Twitter Bookmark Vehicle Technologies Office: FY 2005 Progress Report for Advanced Combustion Engine Technologies on Google Bookmark Vehicle Technologies Office: FY 2005 Progress Report for Advanced Combustion Engine Technologies on Delicious Rank Vehicle Technologies Office: FY 2005 Progress Report for Advanced Combustion Engine Technologies on Digg Find More places to share Vehicle Technologies Office: FY 2005 Progress Report for Advanced Combustion Engine Technologies on

159

Vehicle Technologies Office: FY 2006 Progress Report for Advanced  

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

6 Progress Report 6 Progress Report for Advanced Combustion Engine Technologies to someone by E-mail Share Vehicle Technologies Office: FY 2006 Progress Report for Advanced Combustion Engine Technologies on Facebook Tweet about Vehicle Technologies Office: FY 2006 Progress Report for Advanced Combustion Engine Technologies on Twitter Bookmark Vehicle Technologies Office: FY 2006 Progress Report for Advanced Combustion Engine Technologies on Google Bookmark Vehicle Technologies Office: FY 2006 Progress Report for Advanced Combustion Engine Technologies on Delicious Rank Vehicle Technologies Office: FY 2006 Progress Report for Advanced Combustion Engine Technologies on Digg Find More places to share Vehicle Technologies Office: FY 2006 Progress Report for Advanced Combustion Engine Technologies on

160

High-temperature corrosion in advanced combustion systems  

SciTech Connect (OSTI)

Conceptual designs of advanced combustion systems that utilize coal as a feedstock require high temperature furnaces and heat transfer surfaces capable of operation at much elevated temperatures than those prevalent in current coal-fired power plants. The combination of elevated temperatures and hostile combustion environments necessitate development/application of advanced ceramic materials in these designs. The present paper characterizes the chemistry of coal-fired combustion environments over a wide temperature range of interest in these systems and discusses preliminary experimental results on several materials with potential for application in these systems. An experimental program has been initiated to evaluate materials for advanced combustion systems. Several candidate materials have been identified for evaluation. The candidates included advanced metallic alloys, monolithic ceramics, ceramic particulate/ceramic matrix composites, ceramic fiber/ceramic matrix composites, and ceramic whisker/ceramic matrix composites. The materials examined so far included nickel-base superalloys, alumina, stabilized zirconia, different types of silicon carbide, and silicon nitride. Coupon specimens of several of the materials have been tested in an air environment at 1000, 1200, and 1400{degree}C for 168 h. In addition, specimens were exposed to sodium-sulfate-containing salts at temperatures of 1000 and 1200{degree}C for 168 h. Extensive microstructural analyses were conducted on the exposed specimens to evaluate the corrosion performance of the materials for service in air and fireside environments of advanced coal-fired boilers. Additional tests are underway with several of the materials to evaluate their corrosion performance as a function of salt chemistry, alkali vapor concentration, gas chemistry, exposure temperature, and exposure time.

Natesan, K.; Yanez-Herrero, M.; Fornasieri, C.

1993-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "advanced combustion engines" 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

Coal slurry combustion optimization on single cylinder engine  

SciTech Connect (OSTI)

Under the sponsorship of the US Department of Energy, Morgantown Energy Technology Center, GE Transportation System has been conducting a proof of concept program to use coal water slurry (CWS) fuel to power a diesel engine locomotive since 1988. As reported earlier [1], a high pressure electronically controlled accumulator injector using a diamond compact insert nozzle was developed for this project. The improved reliability and durability of this new FIE allowed for an improved and more thorough study of combustion of CWS fuel in a diesel engine. It was decided to include a diesel pilot fuel injector in the combustion system mainly due to engine start and low load operation needs. BKM, Inc. of San Diego, CA was contracted to develop the electronic diesel fuel pilot/starting FIE for the research engine. As a result, the experimental combustion study was very much facilitated due to the ability of changing pilot/CWS injection timings and quantities without having to stop the engine. Other parameters studied included combustion chamber configuration (by changing CWS fuel injector nozzle hole number/shape/angle), as well as injection pressure. The initial phase of this combustion study is now complete. The results have been adopted into the design of a 12 cylinder engine FIE, to be tested in 1992. This paper summarizes the main findings of this study.

Not Available

1992-09-01T23:59:59.000Z

162

Advanced Natural Gas Reciprocating Engines (ARES) - Presentation...  

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

Dresser Waukesha, June 2011 Advanced Natural Gas Reciprocating Engines (ARES) - Presentation by Dresser Waukesha, June 2011 Presentation on Advanced Natural Gas Reciprocating...

163

Engine combustion control at low loads via fuel reactivity stratification  

DOE Patents [OSTI]

A compression ignition (diesel) engine uses two or more fuel charges during a combustion cycle, with the fuel charges having two or more reactivities (e.g., different cetane numbers), in order to control the timing and duration of combustion. By appropriately choosing the reactivities of the charges, their relative amounts, and their timing, combustion can be tailored to achieve optimal power output (and thus fuel efficiency), at controlled temperatures (and thus controlled NOx), and with controlled equivalence ratios (and thus controlled soot). At low load and no load (idling) conditions, the aforementioned results are attained by restricting airflow to the combustion chamber during the intake stroke (as by throttling the incoming air at or prior to the combustion chamber's intake port) so that the cylinder air pressure is below ambient pressure at the start of the compression stroke.

Reitz, Rolf Deneys; Hanson, Reed M; Splitter, Derek A; Kokjohn, Sage L

2014-10-07T23:59:59.000Z

164

DEMONSTRATION OF ADVANCED COMBUSTION NO X CONTROL TECHNIQUES  

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

ADVANCED COMBUSTION NO ADVANCED COMBUSTION NO X CONTROL TECHNIQUES FOR A WALL-FIRED BOILER PROJECT PERFORMANCE SUMMARY CLEAN COAL TECHNOLOGY DEMONSTRATION PROGRAM JANUARY 2001 SOUTHERN COMPANY SERVICES, INC. DOE/FE-0429 Disclaimer This report was prepared using publicly available information, including the Final Technical Report and other reports prepared pursuant to a cooperative agreement partially funded by the U.S. Department of Energy. Neither the United States Government nor any agency, employee, contractor, or representative thereof, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe upon privately

165

Sandia National Laboratories: Sandia and General Motors: Advancing...  

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

ClimateECAbout ECFacilitiesCRFSandia and General Motors: Advancing Clean Combustion Engines with Predictive Simulation Tools Sandia and General Motors: Advancing Clean Combustion...

166

Advanced Burners and Combustion Controls for Industrial Heat Recovery Systems  

E-Print Network [OSTI]

ADVANCED BURNERS AND COMBUSTION CONTROLS FOR INDUSTRIAL HEAT RECOVERY SYSTEMS J.L.FERRI GTE PRODUCTS CORPORATION TOWANDA, PA ABSTRACT When recuperators are installed on indus trial furnaces, burners and ratio control systems must... recuperators by demonstrating their technical and economi cal feasibility in well monitored field installations (1). During the contract, it became evident to GTE that a systems approach (recuperator, burner, and con troIs) is necessary to be accepted...

Ferri, J. L.

167

Cavity resonances in engine combustion chambers and some applications  

Science Journals Connector (OSTI)

Cavity resonances in engine cylinders are caused by combustion events such as the rapid rate of pressure rise that occurs during compression ignition in diesels or from knock in gasoline engines. These resonances generally occur at frequencies greater than 4 to 5 kHz where the engine structure is not an efficient acoustical radiator. However when they occur at lower frequencies such as in engines with a large bore or in indirect injection diesels they can be important in the noise generation process. They are also important for knock detection in gasoline engines. Current knock detection systems are tuned to the frequency band of the lowest cavity resonance in the combustion chamber. It is shown in the paper that higher order resonances can also be detected by a knock vibration sensor on the surface of the engine. Another use for the cavity resonances is to determine the bulk temperature of the gas in the combustion chamber as a function of crank angle. This technique is demonstrated in the paper for a heavy?duty two?stroke diesel. Also the results of several fundamental investigations of cavity resonances in engine combustion chambers are reported briefly. Good agreement is obtained between theoretical prediction of the resonant frequencies and experimental observation. The splitting of degenerate modes into two components is discussed.

Robert Hickling; Douglas A. Feldmaier; Francis H. K. Chen; Josette S. Morel

1983-01-01T23:59:59.000Z

168

Pulsed jet combustion generator for premixed charge engines  

DOE Patents [OSTI]

A method and device for generating pulsed jets which will form plumes comprising eddie structures, which will entrain a fuel/air mixture from the head space of an internal combustion engine, and mixing this fuel/air mixture with a pre-ignited fuel/air mixture of the plumes thereby causing combustion of the reactants to occur within the interior of the eddie structures.

Oppenheim, A. K. (Berkeley, CA); Stewart, H. E. (Alameda, CA); Hom, K. (Hercules, CA)

1990-01-01T23:59:59.000Z

169

Advanced Natural Gas Reciprocating Engine(s)  

SciTech Connect (OSTI)

Energy independence and fuel savings are hallmarks of the nation’s energy strategy. The advancement of natural gas reciprocating engine power generation technology is critical to the nation’s future. A new engine platform that meets the efficiency, emissions, fuel flexibility, cost and reliability/maintainability targets will enable American manufacturers to have highly competitive products that provide substantial environmental and economic benefits in the US and in international markets. Along with Cummins and Waukesha, Caterpillar participated in a multiyear cooperative agreement with the Department of Energy to create a 50% efficiency natural gas powered reciprocating engine system with a 95% reduction in NOx emissions by the year 2013. This platform developed under this agreement will be a significant contributor to the US energy strategy and will enable gas engine technology to remain a highly competitive choice, meeting customer cost of electricity targets, and regulatory environmental standard. Engine development under the Advanced Reciprocating Engine System (ARES) program was divided into phases, with the ultimate goal being approached in a series of incremental steps. This incremental approach would promote the commercialization of ARES technologies as soon as they emerged from development and would provide a technical and commercial foundation of later-developing technologies. Demonstrations of the Phase I and Phase II technology were completed in 2004 and 2008, respectively. Program tasks in Phase III included component and system development and testing from 2009-2012. Two advanced ignition technology evaluations were investigated under the ARES program: laser ignition and distributed ignition (DIGN). In collaboration with Colorado State University (CSU), a laser ignition system was developed to provide ignition at lean burn and high boost conditions. Much work has been performed in Caterpillar’s DIGN program under the ARES program. This work has consisted of both modeling and single cylinder engine experiments to quantify DIGN performance. The air handling systems of natural gas engines dissipate a percentage of available energy as a result of both flow losses and turbomachinery inefficiencies. An analytical study was initiated to increase compressor efficiency by employing a 2-stage inter-cooled compressor. Caterpillar also studied a turbo-compound system that employs a power turbine to recover energy from the exhaust gases for improved engine efficiency. Several other component and system investigations were undertaken during the final phase of the program to reach the ultimate ARES goals. An intake valve actuation system was developed and tested to improve engine efficiency, durability and load acceptance. Analytical modeling and materials testing were performed to evaluate the performance of steel pistons and compacted graphite iron cylinder head. Effort was made to improve the detonation sensing system by studying and comparing the performance of different pressure sensors. To reduce unburned hydrocarbon emissions, different camshafts were designed and built to investigate the effect of exhaust valve opening timing and value overlap. 1-D & 3-D coupled simulation was used to study intake and exhaust manifold dynamics with the goal of reducing load in-balance between cylinders. Selective catalytic reduction with on-board reductant generation to reduce NOx emissions was also engine tested. An effective mean to successfully deploy ARES technologies into the energy markets is to deploy demonstration projects in the field. In 2010, NETL and Caterpillar agreed to include a new “opportunity fuel” deliverable and two field demonstrations in the ARES program. An Organic Rankine Cycle system was designed with production intent incorporating lessons learned from the Phase II demonstration. Unfortunately, business conditions caused Caterpillar to cancel this demonstration in 2011. Nonetheless, Caterpillar partnered with a local dealer to deploy an ARES class engine using syngas from a biomass gasifier as

Kwok, Doris; Boucher, Cheryl

2009-09-30T23:59:59.000Z

170

Advanced high temperature materials for the energy efficient automotive stirling engine  

Science Journals Connector (OSTI)

The Stirling engine is under investigation jointly by the Department ... internal combustion engine for automotive applications. The Stirling engine is an external combustion engine that offers ... materials rese...

R. H. Titran; J. R. Stephens

1984-09-01T23:59:59.000Z

171

Thermodynamic Advantages of Low Temperature Combustion Engines...  

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

Documents & Publications Improved Engine Design Concepts Using the Second Law of Thermodynamics Boosted HCCI for High Power without Engine Knock, and with Ultra-Low NOX Emissions...

172

Advanced fuel chemistry for advanced engines.  

SciTech Connect (OSTI)

Autoignition chemistry is central to predictive modeling of many advanced engine designs that combine high efficiency and low inherent pollutant emissions. This chemistry, and especially its pressure dependence, is poorly known for fuels derived from heavy petroleum and for biofuels, both of which are becoming increasingly prominent in the nation's fuel stream. We have investigated the pressure dependence of key ignition reactions for a series of molecules representative of non-traditional and alternative fuels. These investigations combined experimental characterization of hydroxyl radical production in well-controlled photolytically initiated oxidation and a hybrid modeling strategy that linked detailed quantum chemistry and computational kinetics of critical reactions with rate-equation models of the global chemical system. Comprehensive mechanisms for autoignition generally ignore the pressure dependence of branching fractions in the important alkyl + O{sub 2} reaction systems; however we have demonstrated that pressure-dependent 'formally direct' pathways persist at in-cylinder pressures.

Taatjes, Craig A.; Jusinski, Leonard E.; Zador, Judit; Fernandes, Ravi X.; Miller, James A.

2009-09-01T23:59:59.000Z

173

Hydrogen assisted combustion of ethanol in Diesel enginesHydrogen assisted combustion of ethanol in Diesel engines Anil Singh Bika, Luke Franklin, Prof. David B. Kittelson  

E-Print Network [OSTI]

Hydrogen assisted combustion of ethanol in Diesel enginesHydrogen assisted combustion of ethanol a means of using nearly pure ethanol as a diesel engine fuel by using hydrogen rich gases to facilitate of combustion (SOC) · A good diesel fuel has a low ignition delay period and hence a high CN · Ethanol has

Minnesota, University of

174

Improved Solvers for Advanced Engine Combustion Simulation  

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

Volvo; multi-zone cycle simulation, OpenFOAM model development Bosch; High Performance Computing of HCCISI transition Delphi; direct injection GE Research; new...

175

Fuels For Advanced Combustion Engines (FACE)  

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.

176

Optimization of Advanced Diesel Engine Combustion Strategies  

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.

177

Optimization of Advanced Diesel Engine Combustion Strategies  

Broader source: Energy.gov [DOE]

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

178

Improved Solvers for Advanced Engine Combustion Simulation  

Broader source: Energy.gov [DOE]

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

179

Fuels For Advanced Combustion Engines (FACE)  

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

2.0E+06 250 350 450 550 650 750 Simulated Distillation Temperature (Degrees Fahrenheit) TIC Abundance Trimethylbenzene Methylethylbenzene Dimethylbenzene C 19 C 18 C 17 C 16 C 15...

180

Improved Solvers for Advanced Engine Combustion Simulation  

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

costs found using HPCToolkit (Mellor-Crummey, Rice): * The transport and chemistry cost the same when there are 100-250 fluid cells per multizone reactor (+150 species). *...

Note: This page contains sample records for the topic "advanced combustion engines" 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

STATEMENT OF CONSIDERATIONS REQUEST BY CUMMINS ENGINE COMPANY, INC. FOR AN ADVANCE WAIVER  

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

CUMMINS ENGINE COMPANY, INC. FOR AN ADVANCE WAIVER CUMMINS ENGINE COMPANY, INC. FOR AN ADVANCE WAIVER OF DOMESTIC AND FOREIGN INVENTION RIGHTS UNDER DOE COOPERATIVE AGREEMENT NO. DE-FC26-07NT43279; W(A)-08-032, CH-1423 The Petitioner, Cummins Engine Company, Inc, (Cummins) was awarded this cooperative agreement for the performance of work entitled, "Light Duty Efficient Clean Combustion", The goal of this program is to develop advanced combustion technologies demonstrating a 10% reduction in fuel consumption while meeting 2010 emission levels. Cummins will be evaluating a range of combustion technologies including pre-mix charged. compression ignition (PCCI) in-cylinder combustion and will be developing fuel sensing technology. The anticipated subsystems requiring performance enhancements to achieve the goals of this program include: fuel delivery; power

182

Combustion characteristics of coal fuels in adiabatic diesel engines  

SciTech Connect (OSTI)

An experimental investigation was conducted to determine the combustion characteristics of coal fuels in adiabatic diesel engines. For this purpose engine testing was carried out by the fumigation of fine coal powder to the intake of an insulated and uncooled single cylinder diesel engine. The engine tests conducted include three types of fuels - Diesel fuel No. 2 (DF-2), Dual fuel (DF-2 + Coal), and Coal fuel. Excellent combustion characteristics of coal fuels were obtained in the present work in an adiabatic engine operating at high temperatures. The ''thermal ignition'' concept uncovered in this investigation led to a hot ''ignition chamber'' which provided ignition of the coal fuel. The high temperature engine with the ''ignition chamber'' permitted engine operation on 100% coal fuel without any external ignition aids or compression ignition. With the addition of a glow plug, the coal fueled engine was successfully cold started. For the coal fueled engine tests, analysis of cylinder pressure data showed rapid heat release rates, shorter combustion duration and very fast burning of coal powder fuel. Preliminary results of the apparent indicated cycle efficiency calculated from the heat release data, indicate that 100% coal powder fueled engine has higher cycle efficiency than DF-2 fueled engine in an adiabatic configuration. The problems encountered during the engine tests include: variation in the engine speed and load due to non-uniform coal flow rate by the coal feed system, contamination of the lubricating oil with fine coal powder, and wear of conventional piston rings. However, these problems can be solved with an improved coal feed system and wear resistant ceramic materials for the piston rings. 33 refs.

Kamo, R.; Kakwani, R.M.; Woods, M.E.; Valdmanis, E.

1986-06-01T23:59:59.000Z

183

The railplug: Development of a new ignitor for internal combustion engines. Final report  

SciTech Connect (OSTI)

A three year investigation of a new type of ignitor for internal combustion engines has been performed using funds from the Advanced Energy Projects Program of The Basic Energy Sciences Division of the U.S. Department of Energy and with matching funding from Research Applications, Inc. This project was a spin-off of {open_quotes}Star Wars{close_quotes} defense technology, specifically the railgun. The {open_quotes}railplug{close_quotes} is a miniaturized railgun which produces a high velocity plume of plasma that is injected into the combustion chamber of an engine. Unlike other types of alternative ignitors, such as plasma jet ignitors, electromagnetic forces enhance the acceleration of the plasma generated by a railplug. Thus, for a railplug, the combined effects of electromagnetic and thermodynamic forces drive the plasma into the combustion chamber. Several engine operating conditions or configurations can be identified that traditionally present ignition problems, and might benefit from enhanced ignition systems. One of these is ultra-lean combustion in spark ignition (SI) engines. This concept has the potential for lowering emissions of NOx while simultaneously improving thermal efficiency. Unfortunately, current lean burn engines cannot be operated sufficiently lean before ignition related problems are encountered to offer any benefits. High EGR engines have similar potential for emissions improvement, but also experience similar ignition problems, particularly at idle. Other potential applications include diesel cold start, alcohol and dual fuel engines, and high altitude relight of gas turbines. The railplug may find application for any of the above. This project focused on three of these potential applications: lean burn SI engines, high EGR SI engines, and diesel cold start.

Matthews, R.D.; Nichols, S.P.; Weldon, W.F.

1994-11-29T23:59:59.000Z

184

Simulation of High Efficiency Clean Combustion Engines and Detailed Chemical Kinetic Mechanisms Development  

Broader source: Energy.gov [DOE]

Discusses continuing work on exploring fuel chemistry, analysis of advanced combustion regimes, and improvements in simulation methodologies

185

Combustion Timing Control of Natural Gas HCCI Engines Using Physics-Based Modeling and LQR Controller  

E-Print Network [OSTI]

Homogeneous Charge Compression Ignition (HCCI) Engines hold promises of being the next generation of internal combustion engines due to their ability to produce high thermal efficiencies and low emission levels. HCCI combustion is achieved through...

Abdelgawad, Marwa

2012-07-16T23:59:59.000Z

186

Development and test of combustion chamber for Stirling engine heated by natural gas  

Science Journals Connector (OSTI)

The combustion chamber is an important component for the Stirling engine heated by natural gas. In the paper ... , we develop a combustion chamber for the Stirling engine which aims to generate 3?5 kWe...electric...

Tie Li; Xiange Song; Xiaohong Gui; Dawei Tang; Zhigang Li…

2014-04-01T23:59:59.000Z

187

Advanced engineering environment collaboration project.  

SciTech Connect (OSTI)

The Advanced Engineering Environment (AEE) is a model for an engineering design and communications system that will enhance project collaboration throughout the nuclear weapons complex (NWC). Sandia National Laboratories and Parametric Technology Corporation (PTC) worked together on a prototype project to evaluate the suitability of a portion of PTC's Windchill 9.0 suite of data management, design and collaboration tools as the basis for an AEE. The AEE project team implemented Windchill 9.0 development servers in both classified and unclassified domains and used them to test and evaluate the Windchill tool suite relative to the needs of the NWC using weapons project use cases. A primary deliverable was the development of a new real time collaborative desktop design and engineering process using PDMLink (data management tool), Pro/Engineer (mechanical computer aided design tool) and ProductView Lite (visualization tool). Additional project activities included evaluations of PTC's electrical computer aided design, visualization, and engineering calculations applications. This report documents the AEE project work to share information and lessons learned with other NWC sites. It also provides PTC with recommendations for improving their products for NWC applications.

Lamph, Jane Ann; Pomplun, Alan R.; Kiba, Grant W.; Dutra, Edward G.; Dankiewicz, Robert J.; Marburger, Scot J.

2008-12-01T23:59:59.000Z

188

Thermodynamic Advantages of Low Temperature Combustion Engines Including the Use of Low Heat Rejection Concepts  

Broader source: Energy.gov [DOE]

Thermodynamic cycle simulation was used to evaluate low temperature combustion in systematic and sequential fashion to base engine design.

189

Numerical Simulation of Combustion Processes in Homogeneous and Stratified Charge Spark Ignition Engines  

Science Journals Connector (OSTI)

A three-dimensional simulation technique for stratified combustion process in direct injection gasoline engines is developed....

Hiroshi Miyagawa; Yoshihiro Nomura; Makoto Koike

2001-01-01T23:59:59.000Z

190

PHYSICAL REVIEW E 90, 022139 (2014) Enhanced efficiency of internal combustion engines by employing spinning gas  

E-Print Network [OSTI]

PHYSICAL REVIEW E 90, 022139 (2014) Enhanced efficiency of internal combustion engines by employing; published 28 August 2014) The efficiency of the internal combustion engine might be enhanced by employing Optimizing the internal combustion engine to achieve the highest possible fuel efficiency can be approached

191

Apparatus for photocatalytic destruction of internal combustion engine emissions during cold start  

DOE Patents [OSTI]

A method and apparatus for the destruction of emissions from an internal combustion engine wherein a substrate coated with TiO.sub.2 is exposed to a light source in the exhaust system of an internal combustion engine thereby catalyzing oxidation/reduction reactions between gaseous hydrocarbons, carbon monoxide, nitrogen oxides and oxygen in the exhaust of the internal combustion engine.

Janata, Jiri (Richland, WA); McVay, Gary L. (Richland, WA); Peden, Charles H. (West Richland, WA); Exarhos, Gregory J. (Richland, WA)

1998-01-01T23:59:59.000Z

192

Modeling of High Efficiency Clean Combustion Engines  

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

2005, Accepted for Publication, Journal of Energy Resources Technology. 9. Effect of Laser-induced Excitation of Oxygen on Ignition in HCCI Engines Analyzed by Numerical...

193

Vehicle Technologies Office: 2013 Advanced Combustion R&D Annual Progress Report  

Broader source: Energy.gov [DOE]

This report describes the progress made on the research and development projects funded by the Advanced Combustion subprogram in the Vehicle Technologies Office.

194

Process/Engineering Co-Simulation of Oxy-Combustion and Chemical Looping Combustion  

SciTech Connect (OSTI)

Over the past several years, the DOE has sponsored various funded programs, collectively referred to as Advanced Process Engineering Co-Simulator (APECS) programs, which have targeted the development of a steady-state simulator for advanced power plants. The simulator allows the DOE and its contractors to systematically evaluate various power plant concepts, either for preliminary conceptual design or detailed final design. One of the novel and powerful characteristics of the simulator is that it is designed to couple a hierarchy of plant-level and equipment-level models that have varying levels of fidelity and computational speed suitable. For example, the simulator may be used to couple the cycle analysis software Aspen Plus? (marketed by Aspen Technology, Inc.) with an equipment item on the process flowsheet modeled with the FLUENT? computational fluid dynamics (CFD) code (marketed by ANSYS Inc.). An important enhancement to the APECS toolkit has been the creation of computationally efficient reduced-order models (ROMs) based on information generated from high-fidelity CFD models. The overarching goal of the present DOE program has been to advance and apply APECS to an overlapping advanced carbon capture technology applications area and a dense-phase, chemical looping (CL) applications area. The specific objectives of the project are to (1) develop ROMs for dense-phase computations using the ROM Builder (based on the regression ROM methodology plus principal component analysis (PCA) for contour plots), and (2) demonstrate commercial-scale, oxyfired (OF), circulating fluidized bed (CFB) co-simulations, as well as CL combustion cosimulations, using the ROM and APECS tool kit. The overall intent of the program is to enhance the APECS toolkit so that it is capable of providing dense-phase riser co-simulations using a CAPEOPEN (CO)-compliant ROM, constructed using the ROM Builder, for CL and oxy-fired CFB systems. As the prime contractor, Alstom Power has the responsibility to demonstrate the capabilities of the enhanced APECS tool to simulate commercial-scale OF CFB and CL combustion co-simulations, both of which involve the time-dependent, dense-phase submodels in the FLUENT? code. ANSYS Inc., as a subcontractor, bears the responsibility to enhance the APECS tool kit for the dense-phase submodel applications, and to assist in the development of specific User-Defined Functions (UDFs) necessary for the particle-phase reactions. In April of 2012, Alstom was notified that the workscope would be curtailed after the end of the budget period. Alstom and the DOE agreed to a revised workscope. The technical work was originally encompassed by Tasks 3 and 4. Task 3, associated with the OF CFB applications area, was curtailed, and Task 4, associated with the CL applications area, was eliminated. Only a portion of Task 3 has been completed. Consequently, this report constitutes a final report for that body of work that was accomplished through May of 2012, in accordance with the workscope revisions.

Sloan, David

2012-12-31T23:59:59.000Z

195

Water distillation using waste engine heat from an internal combustion engine  

E-Print Network [OSTI]

To meet the needs of forward deployed soldiers and disaster relief personnel, a mobile water distillation system was designed and tested. This system uses waste engine heat from the exhaust flow of an internal combustion ...

Mears, Kevin S

2006-01-01T23:59:59.000Z

196

Advanced Natural Gas Engine Technology for Heavy Duty Vehicles...  

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

Advanced Natural Gas Engine Technology for Heavy Duty Vehicles Advanced Natural Gas Engine Technology for Heavy Duty Vehicles Natural gas engine technology has evolved to meet the...

197

The Role of Advanced Combustion in Improving Thermal Efficiency  

Broader source: Energy.gov [DOE]

Combustion plays an important role in enabling high thermal efficiencies. Technologies that deliver short combustion duration and low soot emissions are needed.

198

Development of Computation Capabilities to Predict the Corrosion Wastage of Boiler Tubes in Advanced Combustion Systems  

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

Computation Capabilities Computation Capabilities to Predict the Corrosion Wastage of Boiler Tubes in Advanced Combustion Systems Background Staged combustion is a method of reducing nitrogen oxide (NO x ) emissions in boilers by controlling the combustion mixture of air and fuel. Its process conditions are particularly corrosive to lower furnace walls. Superheaters and/or reheaters are often employed in the upper furnace to reuse hot combustion gasses to further raise the

199

Pulsed jet combustion generator for non-premixed charge engines  

DOE Patents [OSTI]

A device for introducing fuel into the head space of cylinder of non-premixed charge (diesel) engines is disclosed, which distributes fuel in atomized form in a plume, whose fluid dynamic properties are such that the compression heated air in the cylinder head space is entrained into the interior of the plume where it is mixed with and ignites the fuel in the plume interior, to thereby control combustion, particularly by use of a multiplicity of individually controllable devices per cylinder.

Oppenheim, A. K. (Berkeley, CA); Stewart, H. E. (Alameda, CA)

1990-01-01T23:59:59.000Z

200

Enhanced Efficiency of Internal Combustion Engines By Employing Spinning Gas  

SciTech Connect (OSTI)

The efficiency of the internal combustion engine might be enhanced by employing spinning gas. A gas spinning at near sonic velocities has an effectively higher heat capacity, which allows practical fuel cycles, which are far from the Carnot efficiency, to approach more closely the Carnot efficiency. A gain in fuel efficiency of several percent is shown to be theoretically possible for the Otto and Diesel cycles. The use of a flywheel, in principle, could produce even greater increases in the efficiency.

Geyko, Vasily; Fisch, Nathaniel

2014-02-27T23:59:59.000Z

Note: This page contains sample records for the topic "advanced combustion engines" 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

Coal-water slurry fuel internal combustion engine and method for operating same  

DOE Patents [OSTI]

An internal combustion engine fueled with a coal-water slurry is described. About 90 percent of the coal-water slurry charge utilized in the power cycle of the engine is directly injected into the main combustion chamber where it is ignited by a hot stream of combustion gases discharged from a pilot combustion chamber of a size less than about 10 percent of the total clearance volume of main combustion chamber with the piston at top dead center. The stream of hot combustion gases is provided by injecting less than about 10 percent of the total coal-water slurry charge into the pilot combustion chamber and using a portion of the air from the main combustion chamber that has been heated by the walls defining the pilot combustion chamber as the ignition source for the coal-water slurry injected into the pilot combustion chamber.

McMillian, Michael H. (Fairmont, WV)

1992-01-01T23:59:59.000Z

202

Modeling the lubrication of the piston ring pack in internal combustion engines using the deterministic method  

E-Print Network [OSTI]

Piston ring packs are used in internal combustion engines to seal both the high pressure gas in the combustion chamber and the lubricant oil in the crank case. The interaction between the piston ring pack and the cylinder ...

Chen, Haijie

2011-01-01T23:59:59.000Z

203

A Detailed Multi-Zone Thermodynamic Simulation For Direct-Injection Diesel Engine Combustion  

E-Print Network [OSTI]

A detailed multi-zone thermodynamic simulation has been developed for the direct-injection (DI) diesel engine combustion process. For the purpose of predicting heterogeneous type combustion systems, the model explores the formation of pre...

Xue, Xingyu 1985-

2012-11-15T23:59:59.000Z

204

Single-cylinder engine as a tool for developing new combustion processes  

Science Journals Connector (OSTI)

In the race to perfect the combustion process of tomorrow engine developers are focusing on ... ignition and diesel systems with stratified spark-ignition combustion processes along with a variety of technologies...

Frank Menzel; Thomas Seidel; Wulf Schmidt; Julius Pape; Lutz Stiegler

2006-03-01T23:59:59.000Z

205

Fibre optics spark plug sensor for the optimisation of engine combustion processes  

Science Journals Connector (OSTI)

The development and optimisation of state-ofthe- art engine combustion processes require the use of increasingly sophisticated analysis ... targeted optimisation of environmentally friendly and fuel-efficient combustion processes

Thomas Berg; Volker Beushausen; Olaf Thiele; Heiner Voges

2006-06-01T23:59:59.000Z

206

Oxy-Combustion Environment Characterization: Fire- and Steam-Side Corrosion in Advanced Combustion  

SciTech Connect (OSTI)

Oxy-fuel combustion is burning a fuel in oxygen rather than air. The low nitrogen flue gas that results is relatively easy to capture CO{sub 2} from for reuse or sequestration. Corrosion issues associated with the environment change (replacement of much of the N{sub 2} with CO{sub 2} and higher sulfur levels) from air- to oxy-firing were examined. Alloys studied included model Fe-Cr alloys and commercial ferritic steels, austenitic steels, and nickel base superalloys. The corrosion behavior is described in terms of corrosion rates, scale morphologies, and scale/ash interactions for the different environmental conditions. Additionally, the progress towards laboratory oxidation tests in advanced ultra-supercritical steam is updated.

G. R. Holcomb; J. Tylczak; G. H. Meier; B. S. Lutz; N. M. Yanar; F. S. Pettit; J. Zhu; A. Wise; D. E. Laughlin; S. Sridhar

2012-09-25T23:59:59.000Z

207

Detailed numerical simulation of syngas combustion under partially premixed combustion engine conditions  

Science Journals Connector (OSTI)

Two-dimensional detailed numerical simulation is performed to study syngas/air combustion under partially premixed combustion (PPC) engine conditions. Detailed chemical kinetics and transport properties are employed in the study. The fuel, a mixture of CO and H2 with a 1:1 molar ratio, is introduced to the domain at two different instances of time, corresponding to the multiple injection strategy of fuel used in PPC engines. It is found that the ratio of the fuel mass between the second injection and the first injection affects the combustion and emission process greatly; there is a tradeoff between NO emission and CO emission when varying the fuel mass ratio. The ignition zone structures under various fuel mass ratios are examined. A premixed burn region and a diffusion burn region are identified. The premixed burn region ignites first, followed by the ignition of mixtures at the diffusion burn region, and finally a thin diffusion flame is formed to burn out the remaining fuel. NO is produced mainly in the premixed burn region, and later from the diffusion burn region in mixtures close to stoichiometry, whereas unburned CO emission is mainly from the diffusion burn region. An optimization of the fuel mass in the two regions can offer a better tradeoff between NO emission and CO emission. The effects of initial temperature and turbulence on the premixed burn and diffusion burn regions are investigated.

F. Zhang; R. Yu; X.S. Bai

2012-01-01T23:59:59.000Z

208

Advanced Combustion Systems Project Information | netl.doe.gov  

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

FC26-07NT43088 Recovery Act: Oxy-combustion: Oxygen Transport Membrane Development Praxair, Inc. Completed Projects FE0009686 High Efficiency Molten-Bed Oxy-Coal Combustion...

209

Characterization of Single-Cylinder Small-Bore 4-Stroke CIDI Engine Combustion  

SciTech Connect (OSTI)

Direct injection diesel engines power most of the heavy-duty vehicles. Due to their superior fuel economy, high power density and low carbon dioxide emissions, turbocharged, small bore, high speed, direct injection diesel engines are being considered to power light duty vehicles. Such vehicles have to meet stringent emission standards. However, it is difficult to meet these standards by modifying the in-cylinder thermodynamic and combustion processes to reduce engine-out emissions. After-treatment devices will be needed to achieve even lower emission targets required in the production engines to account for the anticipated deterioration after long periods of operation in the field. To reduce the size, mass and cost of the after-treatment devices, there is a need to reduce engine-out emissions and optimize both the engine and the aftertreatment devices as one integrated system. For example, the trade-off between engine-out NOx and PM, suggests that one of these species can be minimized in the engine, with a penalty in the other, which can be addressed efficiently in the after-treatment devices. Controlling engine-out emissions can be achieved by optimizing many engine design and operating parameters. The design parameters include, but are not limited to, the type of injection system: (CRS) Common Rail System, (HEUI ) Hydraulically Actuated and Electronically controlled Unit Injector, or (EUI) Electronic Unit Injector; engine compression ratio, combustion chamber design (bowl design), reentrance geometry, squish area and intake and exhaust ports design. With four-valve engines, the swirl ratio depends on the design of both the tangential and helical ports and their relative locations. For any specific engine design, the operating variables need also to be optimized. These include injection pressure, injection rate, injection duration and timing (pilot, main, and post injection), EGR ratio, and swirl ratio. The goal of the program is to gain a better understanding of the spray behavior under high injection pressures in small-bore, high compression ratio, high-speed, direct-injection diesel engines equipped with advanced fuel injection system. The final results demonstrate the capability of the engine in reducing the engine-out emissions and improve the trade-off between nitrogen oxides (NOx), particulate matter, other emissions and fuel economy. This report introduces a new phenomenological model for the fuel distribution and combustion, and emissions formation in the small bore, high speed, direct injection diesel engine. This will be followed by an analysis of the effect of each of injection pressure, EGR, injection advance and retard and swirl ratio on engine-out emissions and fuel economy. A discussion will be given on the 2-D and 3-D trade of maps. Finally a discussion will be made on the low temperature combustion regimes, its major problems and proposed solutions.

Henein, N A

2005-11-30T23:59:59.000Z

210

Advanced Combustion Modeling with STAR-CD using Transient Flemelet...  

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

occurs - Spray modeling is required * Autoignition, combustion, pollutant formation chemistry - Kinetic modeling required for various fuels - Soot, NOx models required *...

211

Large bore natural gas engine performance improvements and combustion stabilization through reformed natural gas precombustion chamber fueling.  

E-Print Network [OSTI]

??Lean combustion is a standard approach used to reduce NOx emissions in large bore natural gas engines. However, at lean operating points, combustion instabilities and… (more)

Ruter, Matthew D.

2010-01-01T23:59:59.000Z

212

Advanced Reciprocating Engine System (ARES)  

Broader source: Energy.gov [DOE]

Raising the Bar on Engine Technology with Increased Efficiency and Reduced Emissions, at Attractive Costs

213

Combustion Stability in Complex Engineering Flows | Argonne Leadership  

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

Instantaneous contours of temperature from large eddy simulation Instantaneous contours of temperature from large eddy simulation Instantaneous contours of temperature from large eddy simulation of a hypersonic scramjet combustor at Mach 8 flight conditions. Ethylene fuel is introduced through injection ports at the upper left and mixes with air at supersonic speeds. Flow separation and recirculation in the open cavity encourages fuel/air mixing and stable combustion. To maintain hypersonic flight, the fuel must be mixed, ignited, and burned to completion all within a few milliseconds. Cascade Technologies, Inc. Combustion Stability in Complex Engineering Flows PI Name: Lee Shunn PI Email: shunn@cascadetechnologies.com Institution: Cascade Technologies, Inc. Allocation Program: INCITE Allocation Hours at ALCF: 35 Million

214

Jet Ignition Research for Clean Efficient Combustion Engines Prasanna Chinnathambi, Abdullah Karimi, Manikanda Rajagopal, Razi Nalim  

E-Print Network [OSTI]

-chamber internal combustion engines and in innovative pressure-gain combustors for gas turbine engines. Jet engines using low-cost, low-carbon natural gas need improved methods for ignition of lean mixtures rotor combustor. A wave rotor combustion chamber is best ignited with a jet of hot gas that may come

Zhou, Yaoqi

215

Modeling of Air-Fuel Ratio Dynamics of Gasoline Combustion Engine with ARX Network  

E-Print Network [OSTI]

DS-06-1351 Modeling of Air-Fuel Ratio Dynamics of Gasoline Combustion Engine with ARX Network Tomás dynamics of gasoline engines during transient operation. With a collection of input-output data measured;Modeling of Air-Fuel Ratio Dynamics of Gasoline Combustion Engine with ARX Network I. INTRODUCTION

Johansen, Tor Arne

216

New Phenomenological Six-Zone Combustion Model for Direct-Injection Diesel Engines  

Science Journals Connector (OSTI)

New Phenomenological Six-Zone Combustion Model for Direct-Injection Diesel Engines ... Nevertheless, to comply with ever more stringent emission standards, particularly regarding NOx and particulate matter (PM) emissions, such as EURO 6 in Europe, diesel engine manufacturers have to find new in-cylinder combustion strategies and/or complex after-treatment devices to reduce their emissions. ... Heywood, J. B. Internal Combustion Engines Fundamentals; McGraw-Hill: New York, 1988. ...

Alain Maiboom; Xavier Tauzia; Samiur Rahman Shah; Jean-François Hétet

2009-01-09T23:59:59.000Z

217

Apparatus for photocatalytic destruction of internal combustion engine emissions during cold start  

SciTech Connect (OSTI)

A method and apparatus are disclosed for the destruction of emissions from an internal combustion engine wherein a substrate coated with TiO{sub 2} is exposed to a light source in the exhaust system of an internal combustion engine thereby catalyzing oxidation/reduction reactions between gaseous hydrocarbons, carbon monoxide, nitrogen oxides and oxygen in the exhaust of the internal combustion engine. 4 figs.

Janata, J.; McVay, G.L.; Peden, C.H.; Exarhos, G.J.

1998-07-14T23:59:59.000Z

218

Maximizing Power Output in Homogeneous Charge Compression Ignition (HCCI) Engines and Enabling Effective Control of Combustion Timing  

E-Print Network [OSTI]

Ford Motor Company, “Diesel Engine Aftertreatment: How FordNational Laboratory, “Engine Combustion Network”, http://High Power Output without Engine Knock and with Ultra-Low

Saxena, Samveg

2011-01-01T23:59:59.000Z

219

Advances in Diesel Engine Technologies for European Passenger...  

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

Advances in Diesel Engine Technologies for European Passenger Vehicles Advances in Diesel Engine Technologies for European Passenger Vehicles 2002 DEER Conference Presentation:...

220

Injection System and Engine Strategies for Advanced Emission...  

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

Injection System and Engine Strategies for Advanced Emission Standards Injection System and Engine Strategies for Advanced Emission Standards Presentation given at DEER 2006,...

Note: This page contains sample records for the topic "advanced combustion engines" 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

Cylinder wall waste heat recovery from liquid-cooled internal combustion engines utilizing thermoelectric generators.  

E-Print Network [OSTI]

?? This report is a dissertation proposal that focuses on the energy balance within an internal combustion engine with a unique coolant-based waste heat recovery… (more)

Armstead, John Randall

2012-01-01T23:59:59.000Z

222

Combustion optimization in a hydrogen-enhanced lean burn SI engine  

E-Print Network [OSTI]

Lean operation of spark ignition (SI) automotive engines offers attractive performance incentives. Lowered combustion temperatures inhibit NO[sub]x pollutant formation while reduced manifold throttling minimizes pumping ...

Goldwitz, Joshua A. (Joshua Arlen), 1980-

2004-01-01T23:59:59.000Z

223

Design of battery pack and internal combustion engine thermal models for hybrid electric vehicles.  

E-Print Network [OSTI]

?? This thesis focuses on the design of computational models, capable of simulating the thermal behaviour of a battery pack and internal combustion engine equipping… (more)

Catacchio, Gabriele

2013-01-01T23:59:59.000Z

224

Idling control device for internal combustion engine with turbocharger  

SciTech Connect (OSTI)

An idling control device is described for an internal combustion engine with a turbocharger, comprising: an air intake pipe having an inlet at an upstream end thereof adapted to accept air which is to be supplied through the air intake pipe to the internal combustion engine a turbocharger having a housing incorporated in the air intake pipe between the inlet and the outlet, a throttle valve incorporated in the air intake pipe between the turbocharger and the outlet, a surge tank incorporated in the air intake pipe between the throttle valve and the outlet; a bypass air passage means provided in parallel with the air intake pipe between upstream of the turbocharger and downstream of the throttle valve; a flow-control valve incorporated in the bypass air passage means; an actuator operatively associated with the flow-control valve, a computer operatively associated with the actuator and arranged to receive signals relating to operating conditions of the engine; a check valve incorporated in the bypass air passage means downstream of the flow-control valve.

Ando, H.; Kondo, T.

1986-09-23T23:59:59.000Z

225

Internal combustion engine power. A quarter century in review  

SciTech Connect (OSTI)

The advancements have been momentous. A review of the past quarter century of progress - including engine efficiencies, power ratings, fuels, emissions and the technological advances associated with these parameters - draws the real and outstanding developments of the period into perspective. Though the shapes of engines appear to be the same, few of the easy product classifications that existed in 1969 have survived to this day. In addition, the pattern of engine development is becoming similar throughout the world. All diesel engine design work, regardless of the country in which it is being carried out, is related to increasing specific output, from the smaller high-speed diesel, gas and gas turbine engines to the very largest stationary and marine power engines. This is being accomplished for the reciprocating engine by, basically, the same design and research techniques: higher speed, larger engine displacement through larger cylinder sizes, more cylinders with V-type configurations, and higher mean effective pressures through intensive use of turbo-charging and charge-air cooling, along with cylinder-head and injection process modifications. 6 figs.

Kane, J.

1994-04-01T23:59:59.000Z

226

NETL: Advanced NOx Emissions Control: Control Technology - NOx Combustion  

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

Control Options and Integration Control Options and Integration Reaction Engineering International (REI) is optimizing the performance of, and reduce the technical risks associated with the combined application of low-NOx firing systems (LNFS) and post combustion controls through modeling, bench-scale testing, and field verification. Teaming with REI are the University of Utah and Brown University. During this two-year effort, REI will assess real-time monitoring equipment to evaluate waterwall wastage, soot formation, and burner stoichiometry, demonstrate analysis techniques to improve LNFS in combination with reburning/SNCR, assess selective catalytic reduction catalyst life, and develop UBC/fly ash separation processes. The REI program will be applicable to coal-fired boilers currently in use in the United States, including corner-, wall-, turbo-, and cyclone-fired units. However, the primary target of the research will be cyclone boilers, which are high NOx producing units and represent about 20% of the U.S. generating capacity. The results will also be applicable to all U.S. coals. The research will be divided into four key components:

227

Coal slurry combustion optimization on single cylinder engine. Task 1.1.2.2.2, Combustion R&D  

SciTech Connect (OSTI)

Under the sponsorship of the US Department of Energy, Morgantown Energy Technology Center, GE Transportation System has been conducting a proof of concept program to use coal water slurry (CWS) fuel to power a diesel engine locomotive since 1988. As reported earlier [1], a high pressure electronically controlled accumulator injector using a diamond compact insert nozzle was developed for this project. The improved reliability and durability of this new FIE allowed for an improved and more thorough study of combustion of CWS fuel in a diesel engine. It was decided to include a diesel pilot fuel injector in the combustion system mainly due to engine start and low load operation needs. BKM, Inc. of San Diego, CA was contracted to develop the electronic diesel fuel pilot/starting FIE for the research engine. As a result, the experimental combustion study was very much facilitated due to the ability of changing pilot/CWS injection timings and quantities without having to stop the engine. Other parameters studied included combustion chamber configuration (by changing CWS fuel injector nozzle hole number/shape/angle), as well as injection pressure. The initial phase of this combustion study is now complete. The results have been adopted into the design of a 12 cylinder engine FIE, to be tested in 1992. This paper summarizes the main findings of this study.

Not Available

1992-09-01T23:59:59.000Z

228

Hydrocarbon-fueled internal combustion engines: "the worst form of vehicle propulsion... except for all the other forms"  

E-Print Network [OSTI]

Hydrocarbon-fueled internal combustion engines: "the worst form of vehicle propulsion... except of Southern California, Los Angeles, CA 90089-1453 Introduction Hydrocarbon-fueled internal combustion engines. For the purposes of this paper: An internal combustion engine is a heat engine (a device in which thermal energy

229

Advancement in Fuel Spray and Combustion Modeling for Compression...  

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

chemical kinetics into fluid dynamics simulations" "Development of High-Performance Computing (HPC) tools to provide unique insights into the spray and combustion...

230

Task 2: Materials for Advanced Boiler and Oxy-combustion Systems  

SciTech Connect (OSTI)

Characterize advanced boiler (oxy-fuel combustion, biomass cofired) gas compositions and ash deposits Generate critical data on the effects of environmental conditions; develop a unified test method with a view to future standardisation

G. R. Holcomb and B. McGhee

2009-05-01T23:59:59.000Z

231

Exhaust gas recirculation system for an internal combustion engine  

DOE Patents [OSTI]

An exhaust gas recirculation system for an internal combustion engine comprises an exhaust driven turbocharger having a low pressure turbine outlet in fluid communication with an exhaust gas conduit. The turbocharger also includes a low pressure compressor intake and a high pressure compressor outlet in communication with an intake air conduit. An exhaust gas recirculation conduit fluidly communicates with the exhaust gas conduit to divert a portion of exhaust gas to a low pressure exhaust gas recirculation branch extending between the exhaust gas recirculation conduit and an engine intake system for delivery of exhaust gas thereto. A high pressure exhaust gas recirculation branch extends between the exhaust gas recirculation conduit and the compressor intake and delivers exhaust gas to the compressor for mixing with a compressed intake charge for delivery to the intake system.

Wu, Ko-Jen

2013-05-21T23:59:59.000Z

232

Fuel Effects on Low Temperature Combustion in a Light-Duty Diesel Engine  

Broader source: Energy.gov [DOE]

Six different fuels were investigated to study the influence of fuel properties on engine out emissions and performance of low temperature premixed compression ignition combustion light-duty HSDI engines

233

Combustion lean limits fundamentals and their application to a SI hydrogen-enhanced engine concept  

E-Print Network [OSTI]

Operating an engine with excess air, under lean conditions, has significant benefits in terms of increased engine efficiency and reduced emissions. However, under high dilution levels, a lean limit is reached where combustion ...

Ayala, Ferran A. (Ferran Alberto), 1976-

2006-01-01T23:59:59.000Z

234

Computations and modeling of oil transport between piston lands and liner in internal combustion engines  

E-Print Network [OSTI]

The consumption of lubricating oil in internal combustion engines is a continuous interest for engine developers and remains to be one of the least understood areas. A better understanding on oil transport is critical to ...

Fang, Tianshi

2014-01-01T23:59:59.000Z

235

Application for Graduate Admission Supplementary Application Advanced Engineering Programs  

E-Print Network [OSTI]

061) Nuclear Engineering (online) (Z050) Project Management (Z063) Project Management (online) (Z040) Materials Science and Engineering (PMMS) Mechanical Engineering (PMME) Nuclear Engineering (online) (MENUApplication for Graduate Admission Supplementary Application ­ Advanced Engineering Programs Please

Rubloff, Gary W.

236

Modeling of High Efficiency Clean Combustion Engines | Department...  

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

merit08flowers.pdf More Documents & Publications Modeling of HCCI and PCCI Combustion Processes Numerical Modeling of HCCI Combustion Improving alternative fuel utilization:...

237

E-Print Network 3.0 - advanced diesel engine Sample Search Results  

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

engine Search Powered by Explorit Topic List Advanced Search Sample search results for: advanced diesel engine...

238

FY2001 Progress Report for Combusion and Emission Control for Advanced CIDI Engines  

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

COMBUSTION AND COMBUSTION AND EMISSION CONTROL FOR ADVANCED CIDI ENGINES 2 0 0 1 A N N U A L P R O G R E S S R E P O R T U.S. Department of Energy Energy Efficiency and Renewable Energy Office of Transportation Technologies A C K N O W L E D G E M E N T We would like to express our sincere appreciation to Argonne National Laboratory and QSS Group, Inc., for their artistic, editorial and technical contributions in preparing and publishing this report. In addition, we would like to thank all our program participants for their contributions to the programs and all the authors who prepared the project abstracts that comprise this report. U.S. Department of Energy Office of Transportation Technologies 1000 Independence Avenue, S.W. Washington, DC 20585-0121 FY 2001 Progress Report for Combustion and Emission Control for Advanced CIDI Engines

239

Experimental Investigation of the Effects of Fuel Characteristics on High Efficiency Clean Combustion (HECC) in a Light-Duty Diesel Engine  

SciTech Connect (OSTI)

An experimental study was performed to understand fuel property effects on low temperature combustion (LTC) processes in a light-duty diesel engine. These types of combustion modes are often collectively referred to as high efficiency clean combustion (HECC). A statistically designed set of research fuels, the Fuels for Advanced Combustion Engines (FACE), were used for this study. Engine conditions consistent with low speed cruise (1500 rpm, 2.6 bar BMEP) were chosen for investigating fuel property effects on HECC operation in a GM 1.9-L common rail diesel engine. The FACE fuel matrix includes nine combinations of fuel properties including cetane number (30 to 55), aromatic contents (20 to 45 %), and 90 % distillation temperature (270 to 340 C). HECC operation was achieved with high levels of EGR and adjusting injection parameters, e.g. higher fuel rail pressure and single injection event, which is also known as Premixed Charge Compression Ignition (PCCI) combustion. Engine performance, pollutant emissions, and details of the combustion process are discussed in this paper. Cetane number was found to significantly affect the combustion process with variations in the start of injection (SOI) timing, which revealed that the ranges of SOI timing for HECC operation and the PM emission levels were distinctively different between high cetane number (55) and low cetane number fuels (30). Low cetane number fuels showed comparable levels of regulated gas emissions with high cetane number fuels and had an advantage in PM emissions.

Cho, Kukwon [ORNL; Han, Manbae [ORNL; Wagner, Robert M [ORNL; Sluder, Scott [ORNL

2009-01-01T23:59:59.000Z

240

POSTDOCTORAL POSITION ADVANCED SUBSTRATE ENGINEERING  

E-Print Network [OSTI]

AND EXPECTATION: A PhD in materials science, electrical engineering or related field is requried. Prior://sauvignon.mit.edu Information about CREATE: http://www.nrf.gov.sg/nrf/otherProgrammes.aspx?id=188 Information about SMART

Note: This page contains sample records for the topic "advanced combustion engines" 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

Systems Engineering Advancement Research Initiative  

E-Print Network [OSTI]

departments and programs have been developed in response to higher demand for skilled engineers who can think) at the Massachusetts Institute of Technology (MIT), a new kind of interdisciplinary academic unit that spans most

de Weck, Olivier L.

242

ADVANCED MONITORING TO IMPROVE COMBUSTION TURBINE (CT)/COMBINED CYCLE (CC) RELIABILITY, AVAILABILITY AND MAINTAINABILITY (RAM)  

SciTech Connect (OSTI)

Power generators are concerned with the maintenance costs associated with the advanced turbines that they are purchasing. Since these machines do not have fully established operation and maintenance (O&M) track records, power generators face financial risk due to uncertain future maintenance costs. This risk is of particular concern, as the electricity industry transitions to a competitive business environment in which unexpected O&M costs cannot be passed through to consumers. These concerns have accelerated the need for intelligent software-based diagnostic systems that can monitor the health of a combustion turbine in real time and provide valuable information on the machine's performance to its owner/operators. Such systems would interpret sensor and instrument outputs, correlate them to the machine's condition, provide interpretative analyses, forward projections of servicing intervals, estimate remaining component life, and identify faults. EPRI, Impact Technologies, Boyce Engineering, and Progress Energy have teamed to develop a suite of intelligent software tools integrated with a diagnostic monitoring platform that will, in real time, interpret data to assess the ''total health'' of combustion turbines. The Combustion Turbine Health Management System (CTHM) will consist of a series of dynamic link library (DLL) programs residing on a diagnostic monitoring platform that accepts turbine health data from existing monitoring instrumentation. The CTHM system will be a significant improvement over currently available techniques for turbine monitoring and diagnostics. CTHM will interpret sensor and instrument outputs, correlate them to a machine's condition, provide interpretative analyses, project servicing intervals, and estimate remaining component life. In addition, it will enable real-time anomaly detection and diagnostics of performance and mechanical faults, enabling power producers to more accurately predict critical component remaining useful life and turbine degradation.

Leonard Angello

2002-04-01T23:59:59.000Z

243

Materials Challenges for Advanced Combustion and Gasification Fossil Energy Systems  

Science Journals Connector (OSTI)

Through gasification, carbonaceous feedstock such as coal, petroleum coke (petcoke), and biomass is converted into synthesis...12–18] through, e.g., combustion or electrochemical conversion in fuel cells. Syngas ...

S. Sridhar; P. Rozzelle; B. Morreale…

2011-04-01T23:59:59.000Z

244

Combustion Technology Development for an Advanced Glass Melting System  

E-Print Network [OSTI]

Concept feasibility of an innovative technology for glass production has recently been demonstrated. It is based on suspension heating of the glass-forming batch minerals while entrained in a combustion flow of preheated air and natural gas...

Stickler, D. B.; Westra, L.; Woodroffe, J.; Jeong, K. M.; Donaldson, L. W.

245

Mitigating the effect of siloxanes on internal combustion engines using landfill gasses  

DOE Patents [OSTI]

A waste gas combustion method that includes providing a combustible fuel source, in which the combustible fuel source is composed of at least methane and siloxane gas. A sodium source or magnesium source is mixed with the combustible fuel source. Combustion of the siloxane gas of the combustible fuel source produces a silicon containing product. The sodium source or magnesium source reacts with the silicon containing product to provide a sodium containing glass or sodium containing silicate, or a magnesium containing silicate. By producing the sodium containing glass or sodium containing silicate, or the magnesium containing silicate, or magnesium source for precipitating particulate silica instead of hard coating, the method may reduce or eliminate the formation of silica deposits within the combustion chamber and the exhaust components of the internal combustion engine.

Besmann, Theodore M

2014-01-21T23:59:59.000Z

246

Advanced Process Engineering Co-simulation  

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

7 7 AdvAnced Process engineering co-simulAtion Description The National Energy Technology Laboratory (NETL) and its R&D collaboration partners are developing the Advanced Process Engineering Co-Simulator (APECS) as an innovative software tool that combines process simulation with high-fidelity equipment models based on computational fluid dynamics (CFD). Winner of a 2004 R&D 100 Award and a 2007 Federal Laboratory Consortium (FLC) Excellence in Technology Transfer Award, this powerful co-simulation technology, for the first time, provides the necessary level of detail and accuracy essential for engineers to analyze and optimize the coupled fluid flow, heat and mass transfer, and chemical reactions that drive overall plant performance. Combined with advanced visualization and high-performance computing,

247

DESIGNATION SURVEY ADDENDUM REPORT II COMBUSTION ENGINEERING SITE  

Office of Legacy Management (LM)

,111 ,111 DESIGNATION SURVEY ADDENDUM REPORT II COMBUSTION ENGINEERING SITE *I W INDSOR, CONNECTICUT 111 E. W . ABELQUIST Prepared for the Office of Environmental Restoration U.S. Department of Energy I- II I- .:jj;jiE// .:::=::::: .ipij!li' ,:::i::.:. ..::I::::/. ,:ii~iiiiai, ..' iiiiiiiiii!!liiii~~~~,~:~:. ~i!i.~iii~' :' -' +g?' gg;; ,- ZY :i/ .:;i" .:!! .:::a .(/i?j i:/i;jl? I!kr ' -:~i~jg~;...,.;, ..,::&Si! :(j)//ji//(!: 3.. :jijiiiiiiqi:wi l~,. ,,v..::;:~/j~B/; g#;$ .;::::::::::! :::::::::: ::j/j j/i; :(/;;I . . :/:jij; ,:j:,i/; ::::::: ,i/j//:j ;igg;ij iii:::: ,;(iii$ :::::i:ii. ,,,,,, :i.;ifi;iuij;; ,,:,: ii ,,:::::::::::: .:zy,:l::... Lb. .::i:::. .,:.:::;:. ](i:iii:;!! :.:::::::p "'.'j?'~ fix&$ .ii .:::i .::i;;!jg#ggi& i///jjji_

248

Combustion system development of a two-stroke, spark-assisted DI diesel engine  

SciTech Connect (OSTI)

A loop-scavenged, two-stroke, spark-assisted DI diesel engine was developed by modifying an outboard marine gasoline engine to operate on diesel fuel with high fuel efficiency similar to a diesel engine, yet retain the two-stroke engine advantages of low cost, light weight, and high power-to-weight ratio. Engine modification was concentrated in the area of the combustion system, including transfer port design to generate air swirl in the cylinder, and combustion chamber design to generate air squish and turbulence. Bore and stroke (84 x 72 mm) remained the same as those of the base engine. The experimental engine used the production engine's piston, crankshaft, connecting rod, bearings, and cylinder block. The transfer port design was optimized using a flow test bench for best swirl and air flow pattern with a simple flow visualization technique. The best combustion chamber geometry, compression ratio, and fuel injection spray pattern were determined through engine experiments.

Ariga, S.; Matsushita, Y.

1988-01-01T23:59:59.000Z

249

Development of Computational Approaches for Simulation and Advanced Controls for Hybrid Combustion-Gasification Chemical Looping  

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

Computational Approaches Computational Approaches for Simulation and Advanced Controls for Hybrid Combustion-Gasification Chemical Looping Background The United States Department of Energy (DOE) National Energy Technology Laboratory (NETL) develops affordable and clean energy from coal and other fossil fuels to secure a sustainable energy economy. To further this mission, NETL funds research and development of advanced control technologies, including chemical looping (CL)

250

Maximizing Power Output in Homogeneous Charge Compression Ignition (HCCI) Engines and Enabling Effective Control of Combustion Timing  

E-Print Network [OSTI]

Experimental study of biogas combustion characteristics andthe operation range of a biogas HCCI engine for powerOperating Conditions in a Biogas Fueled HCCI Engine for

Saxena, Samveg

2011-01-01T23:59:59.000Z

251

Numerical investigation on the combustion and emission characteristics of a hydrogen assisted biodiesel combustion in a diesel engine  

Science Journals Connector (OSTI)

Abstract The present study aims to bridge the gap on hydrogen assisted biodiesel combustion, and to investigate its impacts on the engine performance, combustion and emission characteristics. Simulations were conducted on a diesel engine fueled by biodiesel with supplementary hydrogen inductions of 0.5%, 1%, 2% and 3% vol of H2 in air. A skeletal reaction mechanism was developed to include the reaction kinetics of biodiesel and hydrogen, with the CO, \\{NOx\\} and soot formation mechanisms embedded. The developed reaction mechanism was validated by performing the ignition delay calculations against the detailed biodiesel reaction mechanism, as well as the 3D numerical simulations against the experimental results. Good agreements in terms of ignition delay, cylinder pressure and heat release rate predictions were obtained. Key simulation results review that with the increase of hydrogen induction, a substantial increase in the peak cylinder pressure and heat release rate can be obtained under 50% and 100% load conditions, indicating an improved performance. But a reduced performance is observed at light load (10% loads) conditions due to the poor ignition and combustion processes. In terms of emissions, a general decreased trend is observed for both CO and soot emissions at all the engine speeds and loads, and a more remarkable reduction is found at 100% engine load conditions. Furthermore, due to the enhanced combustion, \\{NOx\\} emissions are increased slightly at 50% and 100% engine loads.

H. An; W.M. Yang; A. Maghbouli; J. Li; S.K. Chou; K.J. Chua; J.X. Wang; L. Li

2014-01-01T23:59:59.000Z

252

Variable Valve Actuation for Advanced Mode Diesel Combustion...  

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

More Documents & Publications E85 Optimized Engine through Boosting, Spray Optimized GDi, VCR and Variable Valvetrain Ignition Control for HCCI E85 Optimized Engine through...

253

Effect of n-Heptane Premixing on Combustion Characteristics of Diesel Engine  

Science Journals Connector (OSTI)

Effect of n-Heptane Premixing on Combustion Characteristics of Diesel Engine ... Department of Mechanical Engineering, Hanyang University, 17 Haengdang-dong, Sungdong-gu, Seoul 133-791, Korea ... In a different analysis, Simescu et al.17 explained, using their diesel-fueled partial HCCI engines, that soot formed during the premixed combustion period before DI fuel injection is not oxidized completely and emitted as exhaust gas. ...

Dae Sik Kim; Chang Sik Lee

2005-09-23T23:59:59.000Z

254

The effects of unburned hydrocarbon recirculation on ignition and combustion during diesel engine cold starts  

Science Journals Connector (OSTI)

Abstract The exhaust gases contain large amounts of unburned hydrocarbons during cranking without combustion. The effects of unburned hydrocarbon recirculation on ignition and combustion during diesel engine cold starts were investigated using both experiments and simulations. Experiments were conducted on a single-cylinder DI (direct injection) diesel engine equipped with a common rail injection system. The amount of unburned hydrocarbon recirculation was jointly controlled by an EGR (exhaust gas recirculation) valve and a back pressure valve. The investigation showed that optimal opening of recirculation control valves allowed the first firing cycle to be advanced from 19 to 6 and reduced the duration of heavy smoke emission (opacity > 50%) by 77%. However, the enhancement to the in-cylinder LTR (low temperature reaction) decreased gradually as the amount of unburned hydrocarbon recirculation increased. An analysis of the chemical kinetics showed that the reaction intermediates present in unburned hydrocarbons, such as ketohydroperoxides, were the most significant factor in enhancing the LTR during non-firing cycles. At the same time, the substantial heat capacity of unburned hydrocarbons suppressed the LTR for higher recirculation rates.

Yi Cui; Haiyong Peng; Kangyao Deng; Lei Shi

2014-01-01T23:59:59.000Z

255

Vehicle Technologies Office Merit Review 2014: Advanced Combustion Concepts- Enabling Systems and Solutions (ACCESS) for High Efficiency Light Duty Vehicles  

Broader source: Energy.gov [DOE]

Presentation given by Robert Bosch at 2014 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Office Annual Merit Review and Peer Evaluation Meeting about advanced combustion concepts -...

256

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

257

Traveling-Wave Thermoacoustic Engines With Internal Combustion  

DOE Patents [OSTI]

Thermoacoustic devices are disclosed wherein, for some embodiments, a combustion zone provides heat to a regenerator using a mean flow of compressible fluid. In other embodiments, burning of a combustible mixture within the combustion zone is pulsed in phase with the acoustic pressure oscillations to increase acoustic power output. In an example embodiment, the combustion zone and the regenerator are thermally insulated from other components within the thermoacoustic device.

Weiland, Nathan Thomas (Blacksburg, VA); Zinn, Ben T. (Atlanta, GA); Swift, Gregory William (Sante Fe, NM)

2004-05-11T23:59:59.000Z

258

Simulation of High Efficiency Clean Combustion Engines and Detailed...  

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

ongoing work exploring fuel chemistry, analysis of and improving simulation methodologies for high efficiency clean combustion regimes, and computational performance...

259

Study of combustion noise mechanism under accelerating operation of a naturally aspirated diesel engine  

Science Journals Connector (OSTI)

This paper studies combustion noise mechanism during transient operation of naturally aspirated-DI-Diesel engines by developing testing techniques and methods. By testing and analysing four load conditions, the mechanism that governs the differences between transient and steady-state combustion noise is studied. The analysis demonstrates that during transients, the combustion chamber wall temperature, fuel injection pressure, maximum needle lift and unseal standing time of needle lift are higher than those under steady-state conditions for the same speed and load; a fact causing differences in ignition delay, start point of combustion and fuel injection quantity during transient conditions with a low acceleration rate. It is shown that the differences between the combustion chamber wall temperature, fuel injection pressure and ignition delay, as well as high-frequency oscillation of combustion pressure develop during transients in a different pattern compared to the respective steady-state conditions, thus resulting in different combustion noise emissions.

Gequn Shu; Haiqiao Wei

2007-01-01T23:59:59.000Z

260

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

Science Journals Connector (OSTI)

The influence of a ferrous picrate based homogeneous combustion catalyst on the combustion characteristics and fuel efficiency was studied using a fully instrumented diesel engine. A naturally aspirated four stroke, single cylinder, air cooled, direct injection diesel engine was tested at engine speeds of 2800 rpm, 3200 rpm and 3600 rpm under variable load conditions, with different dosing ratio of the catalyst in a commercial diesel fuel. The results indicated that the brake specific fuel consumption decreased and the brake thermal efficiency increased with the addition of the catalyst. At the catalyst dosing ratio of 1:10,000, the brake specific fuel consumption was reduced by 3.3–4.2% at light engine load of 0.12 MPa and 2.0–2.4% at heavy engine load of 0.4 MPa due to the application of the catalyst. From the in-cylinder pressure and heat release rate analysis, it was found that the catalyst reduced ignition delay and combustion duration of fuel in the engine, resulting in slightly higher peak cylinder pressure and faster heat release rate.

Mingming Zhu; Yu Ma; Dongke Zhang

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "advanced combustion engines" 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

ALS Ceramics Materials Research Advances Engine Performance  

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

ALS Ceramics Materials Research ALS Ceramics Materials Research Advances Engine Performance ALS Ceramics Materials Research Advances Engine Performance Print Thursday, 27 September 2012 00:00 ritchie ceramics This 3D image of a ceramic composite specimen imaged under load at 1750C shows the detailed fracture patterns that researchers are able to view using ALS Beamline 8.3.2. The vertical white lines are the individual silicon carbide fibers in this sample about 500 microns in diameter. LBNL senior materials scientist and U.C. Berkeley professor Rob Ritchie has been researching the fracture behavior of a wide array of materials for the past 40 years, the last ten of them using the facilities at the ALS. From human bone to synthetic engineering materials such as shape-memory metals

262

ALS Ceramics Materials Research Advances Engine Performance  

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

ALS Ceramics Materials Research ALS Ceramics Materials Research Advances Engine Performance ALS Ceramics Materials Research Advances Engine Performance Print Thursday, 27 September 2012 00:00 LBNL senior materials scientist and UC Berkeley professor Rob Ritchie has been researching the fracture behavior of a wide array of materials for the past 40 years, the last ten of them using the facilities at the ALS. From human bone to synthetic engineering materials such as shape-memory metals and composites, Ritchie has illuminated groundbreaking cracking patterns and the underlying mechanistic processes using the x-ray synchrotron micro-tomography at ALS Beamline 8.3.2. Summary Slide ritchie ceramics This 3D image of a ceramic composite specimen imaged under load at 1750C shows the detailed fracture patterns that researchers are able to view using ALS Beamline 8.3.2. The vertical white lines are the individual silicon carbide fibers in this sample about 500 microns in diameter.

263

ALS Ceramics Materials Research Advances Engine Performance  

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

ALS Ceramics Materials Research ALS Ceramics Materials Research Advances Engine Performance ALS Ceramics Materials Research Advances Engine Performance Print Thursday, 27 September 2012 00:00 ritchie ceramics This 3D image of a ceramic composite specimen imaged under load at 1750C shows the detailed fracture patterns that researchers are able to view using ALS Beamline 8.3.2. The vertical white lines are the individual silicon carbide fibers in this sample about 500 microns in diameter. LBNL senior materials scientist and U.C. Berkeley professor Rob Ritchie has been researching the fracture behavior of a wide array of materials for the past 40 years, the last ten of them using the facilities at the ALS. From human bone to synthetic engineering materials such as shape-memory metals

264

Experiments and Modeling of Two-Stage Combustion in Low-Emissions Diesel Engines  

Broader source: Energy.gov [DOE]

Two-stage combustion is investigated to achieve low noise, low emissions, and high efficiency operation using engine experiments and a multi-dimensional CFD code coupled with detailed chemistry and a Multi-Objective Genetic Algorithm (KIVA-CHEMKIN-MOGA code). The first stage is premixed combustion and the second stage is diffusion combustion under high temperature and low oxygen concentration conditions and operation at light load (nominal 5.5 bar IMEP and 2000 rpm).

265

Advanced Reciprocating Engine Systems (ARES) R&D - Presentation...  

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

Reciprocating Engine Systems (ARES) R&D - Presentation by Argonne National Laboratory, June 2011 Advanced Reciprocating Engine Systems (ARES) R&D - Presentation by Argonne National...

266

Advanced Diesel Engine Technology Development for HECC | Department...  

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

Diesel Engine Technology Development for HECC Advanced Diesel Engine Technology Development for HECC 2010 DOE Vehicle Technologies and Hydrogen Programs Annual Merit Review and...

267

Advanced PHEV Engine Systems and Emissions Control Modeling and...  

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

PHEV Engine Systems and Emissions Control Modeling and Analysis Advanced PHEV Engine Systems and Emissions Control Modeling and Analysis 2011 DOE Hydrogen and Fuel Cells Program,...

268

Numerical Modeling and Experimental Study of Combustion and Soot Formation in a Direct Injection Diesel Engine  

Science Journals Connector (OSTI)

Numerical Modeling and Experimental Study of Combustion and Soot Formation in a Direct Injection Diesel Engine ... The major problems associated with diesel engines are the high levels of nitrogen oxides (NOX) and particulate emissions. ... (11)?Flagan, R. C.; Seinfeld, J. H. Fundamentals of Air Pollution Engineering; Prentice Hall Inc.:? New York, 1988. ...

T. L. Chan; X. B. Cheng

2007-04-10T23:59:59.000Z

269

Effects of lubricant viscosity and surface texturing on ring-pack performance in internal combustion engines  

E-Print Network [OSTI]

The piston ring-pack contributes approximately 25% of the mechanical losses in an internal combustion engine. Both lubricant viscosity and surface texturing were investigated in an effort to reduce this ring-pack friction ...

Takata, Rosalind (Rosalind Kazuko), 1978-

2006-01-01T23:59:59.000Z

270

Effect of fuel injection strategies on the combustion process in a PFI boosted SI engine  

Science Journals Connector (OSTI)

A low-cost solution based on fuel injection strategies was investigated to optimize the combustion process in a boosted port fuel injection spark ignition (PFI SI) engine. The goal was to reduce the fuel consumption

S. S. Merola; P. Sementa; C. Tornatore…

2009-10-01T23:59:59.000Z

271

Numerical modeling of piston secondary motion and skirt lubrication in internal combustion engines  

E-Print Network [OSTI]

Internal combustion engines dominate transportation of people and goods, contributing significantly to air pollution, and requiring large amounts of fossil fuels. With increasing public concern about the environment and ...

McClure, Fiona

2007-01-01T23:59:59.000Z

272

Modeling the structural behavior of the piston rings under different boundary conditions in internal combustion engines  

E-Print Network [OSTI]

In the process of designing internal combustion engine, piston ring plays an important role in fulfilling the requirements of camber gas sealing, friction reduction and lubrication oil consumption. The goal of this thesis ...

Xu, Dian

2010-01-01T23:59:59.000Z

273

Private Company Uses EERE-Supported Chemistry Model to Substantially Improve Combustion Engine Simulation Software  

Broader source: Energy.gov [DOE]

Convergent Science, Inc. (CSI) is using Lawrence Livermore National Laboratory’s Multi-Zone Combustion Model (MCM) to help automotive engineers develop the next generation of high-efficiency, low-emission vehicles.

274

Thermochemical conversion of fuels into hydrogen-containing gas using recuperative heat of internal combustion engines  

Science Journals Connector (OSTI)

The problem of the thermochemical recuperation of heat from the exhaust gases of internal combustion engines (ICEs) as a method of ... the steam conversion of oxygen-containing fuels into syngas were developed, a...

V. A. Kirillov; A. B. Shigarov; N. A. Kuzin…

2013-09-01T23:59:59.000Z

275

Flexible engine control system for the development of innovative combustion processes  

Science Journals Connector (OSTI)

Daimler, IAV and Etas present a flexible engine control system for the development of innovative combustion processes. The functionality of conventional indication systems has ... important step in forwarding the...

Dr. Josef Steuer; Dr. Michael Mladek; Christian Dengler…

2009-09-01T23:59:59.000Z

276

A new modeling approach of pressure waves at the inlet of internal combustion engines  

Science Journals Connector (OSTI)

This paper presents a new model used to describe the propagation of pressure waves at the inlet systems of internal combustion engine. In the first part, an analogy ... a pipe and a mechanical ideal mass damper spring

David Chalet; Alexandre Mahé; Jean-François Hétet…

2011-06-01T23:59:59.000Z

277

A cycle simulation of coal particle fueled reciprocating internal-combustion engines  

E-Print Network [OSTI]

- Summary of Experimental Diesel Engine Operation on Solid Coal Fuels Page Table 2 - Property Data for Coal (Char) Particles . . 23 Table 3 - Summary of the Combustion Model and Reaction Constants 40 Table 4 ? Specifications of the Base Case Engine... Efforts The first attempt to operate a solid particle fueled piston engine was performed nearly a century ago by Rudolf Diesel, inventor of the compression-ignition engine. Since then, at least a dozen separate attempts to oper- ate diesel engines...

Rosegay, Kenneth Harold

2012-06-07T23:59:59.000Z

278

E-Print Network 3.0 - advanced combustion turbines Sample Search...  

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

; Engineering 88 Reproducedwith pennissionfrom ElsevierPergamon Biomass and Bioenerg..' Vol: 10, :os 2-3, pp..149-l66, 1996 Summary: . advanced Brayton cycle (gas...

279

Valve supporting arrangement of an internal combustion engine  

SciTech Connect (OSTI)

A supporting arrangement is described for a valve of an internal combustion engine having a valve stem portion, comprising a rigid member for supporting the stem portion of the valve for axial movement of the valve, a stamped or press-formed upper retainer connected to the upper portion of the valve stem, a lower annular retainer disposed on the rigid member and surrounding the valve stem, and a coil spring compressed between the upper and lower retainers to bias the valve in a direction to close the associated valve opening. The upper retainer has a substantially constant thickness throughout and comprises an annular collar portion having an essentially constant diameter along the length thereof with the diameter at least substantially equal to the inner diameter of the coil spring. The collar portion is coaxially disposed within an upper portion of the coil spring, an annular flange portion extending radially outwardly from the upper end of the collar portion and engaging with the upper end of the coil spring, and means for achieving a spline connection between the central portion of the retainer and the upper portion of the valve stem, and wherein the upper retainer is divided along a diameter into two identical elements which are disposed about the upper portion of the valve stem such that the radial pressure exerted by the coil spring operates to bias the identical elements into their respective positions operative to connect the upper retainer to the valve stem.

Hayashi, Y.

1986-05-27T23:59:59.000Z

280

Vehicle Technologies Office: Directions in Engine-Efficiency and Emissions Research (DEER) Conference  

Broader source: Energy.gov [DOE]

The Directions in Engine-Efficiency and Emissions Research (DEER) Conference gathers professionals in the engine community to share the latest in advanced combustion engine research and development...

Note: This page contains sample records for the topic "advanced combustion engines" 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

Light Duty Efficient Clean Combustion  

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

fuel efficiency over the FTP city drive cycle by 10.5% over today's state-of-the-art diesel engine. Develop & design an advanced combustion system that synergistically meets...

282

Advanced Diesel Combustion with Low Hydrocarbon and Carbon Monoxide Emissions  

Broader source: Energy.gov [DOE]

Poster presented at the 16th Directions in Engine-Efficiency and Emissions Research (DEER) Conference in Detroit, MI, September 27-30, 2010.

283

Multicylinder Diesel Engine for Low Temperature Combustion Operation  

Broader source: Energy.gov [DOE]

Fuel injection strategies to extend low temperature combustion temperatures to yield low NOx at higher loads and better efficiency over the speed-load range

284

Simulation of High Efficiency Clean Combustion Engines and Detailed...  

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

on LLNL website and by email http:www-pls.llnl.gov?urlscienceandtechnology-chemistry-combustion LLNL-PRES-427539 17 LLNL-PRES-477791 2011 DEER Lawrence Livermore...

285

On the Combustion Chemistry of Biofuels and The Activist Engineer.  

E-Print Network [OSTI]

??This dissertation presents detailed work on the chemical kinetics of biofuel/fossil fuel blends through experimental combustion studies, and explores whether or not issues of the… (more)

Karwat, Darshan Mukesh

2012-01-01T23:59:59.000Z

286

Advanced Life Assessment Methods for Gas Turbine Engine Components  

Science Journals Connector (OSTI)

Abstract In combustion systems for aircraft applications, liners represent an interesting challenge from the engineering point of view regarding the state of stress, including high temperatures (up to 1500 °C) varying over time, high thermal gradients, creep related phenomena, mechanical fatigue and vibrations. As a matter of fact, under the imposed thermo-mechanical loading conditions, some sections of the liner can creep; the consequent residual stresses at low temperatures can cause plastic deformations. For these reasons, during engine operations, the material behaviour can be hardly non-linear and the simulation results to be time expensive. Aim of this paper is to select and implement some advanced material life assessment methods to gas turbine engine components such as combustor liners. Uniaxial damage models for Low Cycle Fatigue (LCF), based on Coffin-Manson, Neu-Sehitoglu and Chaboche works, have been implemented in Matlab®. In particular, experimental LCF and TMF results for full size specimens are compared to calibrate these models and to assess TMF life of specimens. Results obtained in different testing conditions have been used for validation. In particular, each model needs specific parameter calibrations to characterize the investigated materials; these parameters and their relation with temperature variation have been experimentally obtained by testing standard specimens.

Vincenzo Cuffaro; Francesca Curà; Raffaella Sesana

2014-01-01T23:59:59.000Z

287

Development of combustion instability and noise during starting of a truck turbocharged diesel engine  

Science Journals Connector (OSTI)

In the current study, experimental tests were conducted on a truck turbocharged diesel engine to investigate the mechanisms of combustion noise radiation and combustion instability during various starting schedules experienced in daily driving conditions, namely under cold and hot operations. To this aim, a fully instrumented test bed was set up to capture the development of key engine and turbocharger properties. Analytical diagrams are provided to explain the behaviour of combustion instability and noise radiation in conjunction with all relevant parameters, such as cylinder pressure and pressure spectrum, turbocharger and governor/fuel pump response.

Evangelos G. Giakoumis; Athanasios M. Dimaratos

2012-01-01T23:59:59.000Z

288

Multi-zone modelling of partially premixed low-temperature combustion in pilot-ignited natural-gas engines  

SciTech Connect (OSTI)

Detailed results from a multi-zone phenomenological simulation of partially premixed advanced-injection low-pilot-ignited natural-gas low-temperature combustion are presented with a focus on early injection timings (the beginning of (pilot) injection (BOI)) and very small diesel quantities (2-3 per cent of total fuel energy). Combining several aspects of diesel and spark ignition engine combustion models, the closed-cycle simulation accounted for diesel autoignition, diesel spray combustion, and natural-gas combustion by premixed turbulent flame propagation. The cylinder contents were divided into an unburned zone, several pilot fuel zones (or 'packets') that modelled diesel evaporation and ignition, a flame zone for natural-gas combustion, and a burned zone. The simulation predicted the onset of ignition, cylinder pressures, and heat release rate profiles satisfactorily over a wide range of BOIs (20-60���° before top dead centre (before TDC)) but especially well at early BOIs. Strong coupling was observed between pilot spray combustion in the packets and premixed turbulent combustion in the flame zone and, therefore, the number of ignition centres (packets) profoundly affected flame combustion. The highest local peak temperatures (greater than 2000 K) were observed in the packets, while the flame zone was much cooler (about 1650 K), indicating that pilot diesel spray combustion is probably the dominant source of engine-out emissions of nitrogen oxide (NO x). Further, the 60���° before TDC BOI yielded the lowest average peak packet temperatures (about 1720 K) compared with the 20���° before TDC BOI (about 2480 K) and 40���° before TDC BOI (about 2700 K). These trends support experimental NO x trends, which showed the lowest NO x emissions for the 60���°, 20���°, and 40���° before TDC BOIs in that order. Parametric studies showed that increasing the intake charge temperature, pilot quantity, and natural-gas equivalence ratio all led to higher peak heat release rates and hotter packets but the pilot quantity and intake temperature affected the potential for NO x formation to a greater extent.

Krishnan, S. R.; Srinivasan, K. K.

2010-06-29T23:59:59.000Z

289

Advanced combustion technologies for gas turbine power plants  

SciTech Connect (OSTI)

Objectives are to develop actuators for enhancing the mixing between gas streams, increase combustion stability, and develop hgih-temperature materials for actuators and sensors in combustors. Turbulent kinetic energy maps of an excited jet with co-flow in a cavity with a partially closed exhaust end are given with and without a longitudinal or a transverse acoustic field. Dielectric constants and piezoelectric coefficients were determined for Sr{sub 2}(Nb{sub x}Ta{sub 1-x}){sub 2}O{sub 7} ceramics.

Vandsburger, U. [Virginia Polytechnic Inst. and State Univ., Blacksburg, VA (United States). Dept. of Mechanical Engineering; Roe, L.A. [Arkansas Univ., Fayetteville, AR (United States). Dept. of Mechanical Engineering; Desu, S.B. [Virginia Polytechnic Inst. and State Univ., Blacksburg, VA (United States). Dept. of Materials Science and Engineering

1995-12-31T23:59:59.000Z

290

DOE/NETL ADVANCED COMBUSTION SYSTEMS: CHEMICAL LOOPING SUMMARY  

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

COMBUSTION SYSTEMS: CHEMICAL LOOPING SUMMARY JULY 2013 DISCLAIMER This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal li- ability or responsibility for the accuracy, completeness, or useful- ness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference therein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommenda-

291

Method for the operation of internal combustion engines. [gasification reactor for reforming gasoline  

SciTech Connect (OSTI)

This is a method for the operation of internal combustion engines which is designed to decontaminate the exhaust gases. The method includes: feeding a gasification air stream into a gasification reactor; feeding fuel into the same gasification reactor; combining the fuel with the gasification air into a homogeneous fuel-air mixture in the gasification reactor; and converting the fuel-air mixture by partial combustion into a soot -free reformed gas. Then, the reformed gas is fed from the gasification reactor to a mixer where the reformed gas is mixed with combustion air and the reformed gas-air mixture is fed to the internal combustion engine for further combustion with the result that there is intensive decontamination of the exhaust gases which thereby reduces air pollution. The reformed gas temperature is adjusted low for maximum engine output, and is adjusted higher for lower engine temperatures in order to obtain a reformed gas which is richer in hydrogen and thereby produce exhaust gases which are lower in harmful substances. In reference to the exhaust gases in an internal combustion engine, this method achieves the highest possible degree of decontamination, not only of the carbon monoxide and hydrocarbons , but also of the nitrous oxides in the exhaust gases. Using this method, the internal combustion engine can be operated not only with high-test, no-knock gasoline, but also with cheap, lead-free low octane, straight-run gasoline which is low in aromatics and olefins, which normally do not have no-knock properties, and the internal combustion engine can be operated with the lowest possible fuel consumption. The gasification reactor operates through chemical reaction in the presence of a catalyst. Optionally, this method may include a return of part of the reformed gas to the input of the gasification reactor.

Muhlberg, E.

1980-01-29T23:59:59.000Z

292

Effect of Bioethanol Blended Diesel Fuel and Engine Load on Spray, Combustion, and Emissions Characteristics in a Compression Ignition Engine  

Science Journals Connector (OSTI)

Yan et al.(8) investigated the combustion and emission characteristics of diesel engines fueled with ethanol–diesel blended fuel in a single cylinder diesel engine. ... Figure 11 shows the indicated specific fuel consumption (ISFC) characteristics of diesel–bioethanol blended fuels at various engine loads. ... Tests on the engine fuelled with diesel only were made, and the performance evaluated to form a basis for comparison for those of ethanol-diesel dual fuelling. ...

Su Han Park; In Mo Youn; Yunsung Lim; Chang Sik Lee

2012-07-03T23:59:59.000Z

293

Acoustic measurements for the combustion diagnosis of diesel engines fuelled with biodiesels  

Science Journals Connector (OSTI)

In this paper, an experimental investigation was carried out on the combustion process of a compression ignition (CI) engine running with biodiesel blends under steady state operating conditions. The effects of biodiesel on the combustion process and engine dynamics were analysed for non-intrusive combustion diagnosis based on a four-cylinder, four-stroke, direct injection and turbocharged diesel engine. The signals of vibration, acoustic and in-cylinder pressure were measured simultaneously to find their inter-connection for diagnostic feature extraction. It was found that the sound energy level increases with the increase of engine load and speed, and the sound characteristics are closely correlated with the variation of in-cylinder pressure and combustion process. The continuous wavelet transform (CWT) was employed to analyse the non-stationary nature of engine noise in a higher frequency range. Before the wavelet analysis, time synchronous average (TSA) was used to enhance the signal-to-noise ratio (SNR) of the acoustic signal by suppressing the components which are asynchronous. Based on the root mean square (RMS) values of CWT coefficients, the effects of biodiesel fractions and operating conditions (speed and load) on combustion process and engine dynamics were investigated. The result leads to the potential of airborne acoustic measurements and analysis for engine condition monitoring and fuel quality evaluation.

Dong Zhen; Tie Wang; Fengshou Gu; Belachew Tesfa; Andrew Ball

2013-01-01T23:59:59.000Z

294

Effects of Advanced Combustion Technologies on Particulate Matter...  

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

1.7 L TDI with full-pass control - HCCI: single cylinder research engine * Light Duty Ad Hoc modes 1-4 for PCCI * HCCI: 1800 RPM, varied fuel rate, intake T - Loads from 1.6 -...

295

ADVANCED MONITORING TO IMPROVE COMBUSTION TURBINE/COMBINED CYCLE CT/(CC) RELIABILITY, AVAILABILITY AND MAINTAINABILITY (RAM)  

SciTech Connect (OSTI)

Power generators are concerned with the maintenance costs associated with the advanced turbines that they are purchasing. Since these machines do not have fully established operation and maintenance (O&M) track records, power generators face financial risk due to uncertain future maintenance costs. This risk is of particular concern, as the electricity industry transitions to a competitive business environment in which unexpected O&M costs cannot be passed through to consumers. These concerns have accelerated the need for intelligent software-based diagnostic systems that can monitor the health of a combustion turbine in real time and provide valuable information on the machine's performance to its owner/operators. EPRI, Impact Technologies, Boyce Engineering, and Progress Energy have teamed to develop a suite of intelligent software tools integrated with a diagnostic monitoring platform that will, in real time, interpret data to assess the ''total health'' of combustion turbines. The Combustion Turbine Health Management System (CTHM) will consist of a series of dynamic link library (DLL) programs residing on a diagnostic monitoring platform that accepts turbine health data from existing monitoring instrumentation. The CTHM system will be a significant improvement over currently available techniques for turbine monitoring and diagnostics. CTHM will interpret sensor and instrument outputs, correlate them to a machine's condition, provide interpretative analyses, project servicing intervals, and estimate remaining component life. In addition, it will enable real-time anomaly detection and diagnostics of performance and mechanical faults, enabling power producers to more accurately predict critical component remaining useful life and turbine degradation.

Leonard Angello

2004-09-30T23:59:59.000Z

296

ADVANCED MONITORING TO IMPROVE COMBUSTION TURBINE/COMBINED CYCLE CT/(CC) RELIABILITY, AVAILABILITY AND MAINTAINABILITY (RAM)  

SciTech Connect (OSTI)

Power generators are concerned with the maintenance costs associated with the advanced turbines that they are purchasing. Since these machines do not have fully established operation and maintenance (O&M) track records, power generators face financial risk due to uncertain future maintenance costs. This risk is of particular concern, as the electricity industry transitions to a competitive business environment in which unexpected O&M costs cannot be passed through to consumers. These concerns have accelerated the need for intelligent software-based diagnostic systems that can monitor the health of a combustion turbine in real time and provide valuable information on the machine's performance to its owner/operators. EPRI, Impact Technologies, Boyce Engineering, and Progress Energy have teamed to develop a suite of intelligent software tools integrated with a diagnostic monitoring platform that will, in real time, interpret data to assess the ''total health'' of combustion turbines. The Combustion Turbine Health Management System (CTHM) will consist of a series of dynamic link library (DLL) programs residing on a diagnostic monitoring platform that accepts turbine health data from existing monitoring instrumentation. The CTHM system will be a significant improvement over currently available techniques for turbine monitoring and diagnostics. CTHM will interpret sensor and instrument outputs, correlate them to a machine's condition, provide interpretative analyses, project servicing intervals, and estimate remaining component life. In addition, it will enable real-time anomaly detection and diagnostics of performance and mechanical faults, enabling power producers to more accurately predict critical component remaining useful life and turbine degradation.

Leonard Angello

2004-03-31T23:59:59.000Z

297

ADVANCE: Increasing the Participation and Advancement of Women in Academic Science and Engineering Careers  

E-Print Network [OSTI]

ADVANCE: Increasing the Participation and Advancement of Women in Academic Science and Engineering Careers (ADVANCE) Program Solicitation NSF 07-582 Replaces Document(s): NSF 05-584 National Science for Biological Sciences Directorate for Computer & Information Science & Engineering Directorate for Engineering

Farritor, Shane

298

Advanced coal-fueled gas turbine systems: Subscale combustion testing. Topical report, Task 3.1  

SciTech Connect (OSTI)

This is the final report on the Subscale Combustor Testing performed at Textron Defense Systems` (TDS) Haverhill Combustion Laboratories for the Advanced Coal-Fueled Gas Turbine System Program of the Westinghouse Electric Corp. This program was initiated by the Department of Energy in 1986 as an R&D effort to establish the technology base for the commercial application of direct coal-fired gas turbines. The combustion system under consideration incorporates a modular staged, rich-lean-quench, Toroidal Vortex Slogging Combustor (TVC) concept. Fuel-rich conditions in the first stage inhibit NO{sub x} formation from fuel-bound nitrogen; molten coal ash and sulfated sorbent are removed, tapped and quenched from the combustion gases by inertial separation in the second stage. Final oxidation of the fuel-rich gases, and dilution to achieve the desired turbine inlet conditions are accomplished in the third stage, which is maintained sufficiently lean so that here, too, NO{sub x} formation is inhibited. The primary objective of this work was to verify the feasibility of a direct coal-fueled combustion system for combustion turbine applications. This has been accomplished by the design, fabrication, testing and operation of a subscale development-type coal-fired combustor. Because this was a complete departure from present-day turbine combustors and fuels, it was considered necessary to make a thorough evaluation of this design, and its operation in subscale, before applying it in commercial combustion turbine power systems.

Not Available

1993-05-01T23:59:59.000Z

299

Numerical study on the combustion and emission characteristics of a methanol/diesel reactivity controlled compression ignition (RCCI) engine  

Science Journals Connector (OSTI)

An improved multi-dimensional model coupled with detailed chemical kinetics mechanism was applied to investigate the combustion and emission characteristics of a methanol/diesel reactivity controlled compression ignition (RCCI) engine. The fuel was supplied separately by directly injecting diesel fuel into cylinder well before top dead center, while premixing methanol through the intake port in the tested methanol/diesel RCCI engine. The effects of mass fraction of premixed methanol, start of injection (SOI) of diesel and initial in-cylinder temperature at intake valve closing (IVC) on engine combustion and emission were investigated in detail. The results show that both methanol mass fraction and SOI have a significant impact on cetane number (CN) distribution, i.e. fuel reactivity distribution, which determines the ignition delay and peak of heat release rate (HRR). Due to larger area with high-temperature region and more homogeneous fuel distribution with increased methanol, and the oxygen atom contained by methanol molecule, all the emissions are reduced with moderate methanol addition. Advanced SOI with high combustion temperature is favorable to hydrocarbon (HC) and soot reduction, yet not to the decrease of nitrogen oxide (NOx) and carbon monoxide (CO) emissions. Both increasing methanol fraction and advancing the SOI are beneficial to improve fuel economy and avoid engine knock. Moreover, it was revealed that the initial temperature must be increased with increased methanol fraction to keep the 50% burn point (CA50) constant, which results in decrease of the equivalent indicated specific fuel consumption (EISFC) and all emissions, except for slight increase in \\{NOx\\} due to the higher burning temperature.

Yaopeng Li; Ming Jia; Yaodong Liu; Maozhao Xie

2013-01-01T23:59:59.000Z

300

Investigation of Combustion and Emission Characteristics of a Diesel Engine with Oxygenated Fuels and Thermal Barrier Coating  

Science Journals Connector (OSTI)

Investigation of Combustion and Emission Characteristics of a Diesel Engine with Oxygenated Fuels and Thermal Barrier Coating ... Exhaust gas emissions from diesel engines have become a serious problem to the researchers; therefore, a method of reduction of gas emission is needed. ... Their results show that the engine can achieve ultra-low emission without fundamental change to the combustion system. ...

P. Ramu; C. G. Saravanan

2009-01-07T23:59:59.000Z

Note: This page contains sample records for the topic "advanced combustion engines" 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

Corrosion and its effect on mechanical properties of materials for advanced combustion systems  

SciTech Connect (OSTI)

Conceptual designs of advanced combustion systems that utilize coal as a feedstock require high-temperature furnaces and heat transfer surfaces that can operate at temperatures much higher than those prevalent in current coal-fired power plants. The combination of elevated temperatures and hostile combustion environments necessitates development and application of advanced ceramic materials in these designs. The objectives of the present program are to evaluate (a) the chemistry of gaseous and condensed products that arise during combustion of coal; (b) the corrosion behavior of candidate materials in air, slag and salt environments for application in the combustion environments; and (c) the residual mechanical properties of the materials after corrosion. The program emphasizes temperatures in the range of 1000-1400{degrees}C for ceramic materials and 600-1000{degrees}C for metallic alloys. Coal/ash chemistries developed on the basis of thermodynamic/kinetic calculations, together with slags from actual combustors, are used in the program. The materials being evaluated include monolithic silicon carbide from several sources: silicon, nitride, silicon carbide in alumina composites, silicon carbide fibers in a silicon carbide- matrix composite, and some advanced nickel-base alloys. The paper presents results from an ongoing program on corrosion performance of candidate ceramic materials exposed to air, salt and slag environments and their affect on flexural strength and energy absorbed during fracture of these materials.

Natesan, K. [Argonne National Lab., IL (United States); Freeman, M.; Mathur, M. [Pittsburgh Energy Technology Center, Pittsburgh, PA (United States)

1996-05-01T23:59:59.000Z

302

Module 3: Hydrogen Use in Internal Combustion Engines  

Broader source: Energy.gov [DOE]

This course covers combustive properties, air/fuel ratio, types of pre-ignition problems, type of ignition systems, crankcase ventilation issues, thermal efficiency, emissions, power output, effect of mixing hydrogen

303

Performance of an Internal Combustion Engine Operating on Landfill Gas and the Effect of Syngas Addition  

Science Journals Connector (OSTI)

Performance of an Internal Combustion Engine Operating on Landfill Gas and the Effect of Syngas Addition ... The performance of a four-stroke Honda GC160E spark ignition (SI) internal combustion (IC) engine operating on landfill gas (LFG) was investigated, as well as the impact of H2 and CO (syngas) addition on emissions and engine efficiency. ... In addition, variation across both the syngas content (up to 15%) and the ratio of H2 to CO in the syngas (H2/CO = 0.5, 1, and 2) were tested. ...

McKenzie P. Kohn; Jechan Lee; Matthew L. Basinger; Marco J. Castaldi

2011-02-07T23:59:59.000Z

304

Combustion characteristics of dry coal-powder-fueled adiabatic diesel engine: Final report  

SciTech Connect (OSTI)

This report describes the progress and findings of a research program aimed at investigating the combustion characteristics of dry coal powder fueled diesel engine. During this program, significant achievements were made in overcoming many problems facing the coal-powder-fueled engine. The Thermal Ignition Combustion System (TICS) concept was used to enhance the combustion of coal powder fuel. The major coal-fueled engine test results and accomplishments are as follows: design, fabrication and engine testing of improved coal feed system for fumigation of coal powder to the intake air; design, fabrication and engine testing of the TICS chamber made from a superalloy material (Hastelloy X); design, fabrication and engine testing of wear resistant chrome oxide ceramic coated piston rings and cylinder liner; lubrication system was improved to separate coal particles from the contaminated lubricating oil; control of the ignition timing of fumigated coal powder by utilizing exhaust gas recirculation (EGR) and variable TICS chamber temperature; coal-fueled engine testing was conducted in two configurations: dual fuel (with diesel pilot) and 100% coal-fueled engine without diesel pilot or heated intake air; cold starting of the 100% coal-powder-fueled engine with a glow plug; and coal-fueled-engine was operated from 800 to 1800 rpm speed and idle to full load engine conditions.

Kakwani, R.M.; Kamo, R.

1989-01-01T23:59:59.000Z

305

"Optimization of efficiency of internal combustion engines via using  

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

Optimization of efficiency of internal combustion engines via using Optimization of efficiency of internal combustion engines via using spinning gas and non-spectroscopic method of determining gas constituents through rotation ..--.. Inventors Nathaniel Fisch, Vasily Geyko An important use of the disclosed approach is the improvement efficiency of thermal cycles and as result efficiency of engines. Different cycles and different ways of compression of spinning gas may be used to maximize possible efficiency gain. In conventional internal combustion engines, gas spinning is either not used at all or used only with the purpose of increasing turbulence and better mixing. In the disclosed method, gas rotation is used for energy storage, hence it allows an improvement in thermal cycle efficiency. To achieve significant effect related to

306

Study of hydrogen mixing within the combustion engineering system 80+ containment  

SciTech Connect (OSTI)

A scoping study is performed to determine how hydrogen distributes throughout an evolutionary, advanced pressurized water reactor (PWR) spherical containment given a variety of hydrogen inflows and delivery locations. The study uses MAAP and a preliminary containment design for the Combustion Engineering (C-E) System 80+{trademark} standard design as the bases for the detailed thermal-hydraulic analyses. Results are compared to applicable design criteria from the Advanced Light Water Reactor (ALWR) Requirements Document. The C-E System 80+ containment design is based on the Cherokee-Perkins System 80{sup R} spherical containment design, revised to accommodate ALWR Requirements Document design criteria. A feature of this design is the 500,000-gal in-containment refueling water storage tank (IRWST) located in the lower region of the containment building. This tank is the source for the safety injection and containment spray pumps, and the discharge location for the primary system safety and bleed valves. The containment design directs water accumulation on lower floors to the IRWST to preclude its depletion.

Hawley, J.T.; Hammersley, R.J.; Plys, M.G. (Fauske Associates, Inc., Burr Ridge, IL (USA))

1989-11-01T23:59:59.000Z

307

A Virtual Engineering Framework for Simulating Advanced Power System  

SciTech Connect (OSTI)

In this report is described the work effort performed to provide NETL with VE-Suite based Virtual Engineering software and enhanced equipment models to support NETL's Advanced Process Engineering Co-simulation (APECS) framework for advanced power generation systems. Enhancements to the software framework facilitated an important link between APECS and the virtual engineering capabilities provided by VE-Suite (e.g., equipment and process visualization, information assimilation). Model enhancements focused on improving predictions for the performance of entrained flow coal gasifiers and important auxiliary equipment (e.g., Air Separation Units) used in coal gasification systems. In addition, a Reduced Order Model generation tool and software to provide a coupling between APECS/AspenPlus and the GE GateCycle simulation system were developed. CAPE-Open model interfaces were employed where needed. The improved simulation capability is demonstrated on selected test problems. As part of the project an Advisory Panel was formed to provide guidance on the issues on which to focus the work effort. The Advisory Panel included experts from industry and academics in gasification, CO2 capture issues, process simulation and representatives from technology developers and the electric utility industry. To optimize the benefit to NETL, REI coordinated its efforts with NETL and NETL funded projects at Iowa State University, Carnegie Mellon University and ANSYS/Fluent, Inc. The improved simulation capabilities incorporated into APECS will enable researchers and engineers to better understand the interactions of different equipment components, identify weaknesses and processes needing improvement and thereby allow more efficient, less expensive plants to be developed and brought on-line faster and in a more cost-effective manner. These enhancements to APECS represent an important step toward having a fully integrated environment for performing plant simulation and engineering. Furthermore, with little effort the modeling capabilities described in this report can be extended to support other DOE programs, such as ultra super critical boiler development, oxy-combustion boiler development or modifications to existing plants to include CO2 capture and sequestration.

Mike Bockelie; Dave Swensen; Martin Denison; Stanislav Borodai

2008-06-18T23:59:59.000Z

308

Advanced atmospheric fluidized-bed combustion design - spouted bed  

SciTech Connect (OSTI)

This report describes the Spouted-Fluidized Bed Boiler that is an advanced atmospheric fluidized bed combustor (FBC). The objective of this system design study is to develop an advanced AFBC with improved performance and reduced capital and operating costs compared to a conventional AFBC and an oil-fired system. The Spouted-Fluidized Bed (SFB) system is a special type of FBC with a distinctive jet of air in the bed to establish an identifiable solids circulation pattern. This feature is expected to provide: reduced NO/sub x/ emissions because of the fuel rich spout zone; high calcium utilization, calcium-to-sulfur ratio of 1.5, because of the spout attrition and mixing; high fuel utilization because of the solids circulation and spout attrition; improved thermal efficiency because of reduced solids heat loss; and improved fuel flexibility because of the spout phenomena. The SFB was compared to a conventional AFBC and an oil-fired package boiler for 15,000 pound per hour system. The evaluation showed that the operating cost advantages of the SFB resulted from savings in fuel, limestone, and waste disposal. The relative levelized cost for steam from the three systems in constant 1985 dollars is: SFB - $10 per thousand pounds; AFBC - $11 per thousand pounds; oil-fired - $14 per thousand pounds. 18 refs., 5 figs., 11 tabs.

Shirley, F.W.; Litt, R.D.

1985-11-27T23:59:59.000Z

309

Advanced Diesel Engine Technology Development for HECC  

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

Low Temperature Combustion: Early PCCI Lift Off Length 2 3 Reduce Liquid Fuel Penetration and Enhance Fluid Entrainment Reduced Liquid Penetration Diffusion Flame Lift...

310

Advanced Gasoline Turbocharged Direct Injection (GTDI) Engine...  

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

combustion system includes "micro" stratified charge capability Air Flow & Air Fuel Spatial & Temporal Evolution "Micro" Stratified Charge * Overall Lean Homogeneous * Early...

311

Plasmatron Fuel Reformer Development and Internal Combustion Engine Vehicle Applications  

Broader source: Energy.gov [DOE]

2004 Diesel Engine Emissions Reduction (DEER) Conference Presentation: Massachusetts Institute of Technology

312

MECH 502: Advanced/Additive Manufacturing Engineering COURSE DESCRIPTION  

E-Print Network [OSTI]

MECH 502: Advanced/Additive Manufacturing Engineering COURSE DESCRIPTION In this course you product development and innovation. You will develop a rich knowledge of additive manufacturing processes enabling advanced/additive manufacturing and personal fabrication. You will have the opportunity

Schumacher, Russ

313

Combustion and Emissions Characterization of Biodiesel Blends in a City-Car Engine  

Science Journals Connector (OSTI)

Whereas in the available literature, most of the researches addressed the multicylinders diesel engine of large displacement;(7, 22-27) only some works have investigated the light duty engines, designed for agricultural purpose and mainly tested for a fixed value of the engine speed. ... Rakopoulos, C. D.; Antonopoulos, K. A.; Rakopoulos, D. C.; Hountalas, D. T.; Giakoumis, E. G.Comparative performance and emissions study of a direct injection Diesel engine using blends of diesel fuel with vegetable oils or bio-diesels of various origins Energy Convers. ... Heywood, J. B. Internal combustion engine fundamentals; Mcgraw-Hill: New York, 1988. ...

Giancarlo Chiatti; Ornella Chiavola; Fulvio Palmieri; Stefano Albertini

2014-07-06T23:59:59.000Z

314

Apparatus and method for operating internal combustion engines from variable mixtures of gaseous fuels  

DOE Patents [OSTI]

An apparatus and method for utilizing any arbitrary mixture ratio of multiple fuel gases having differing combustion characteristics, such as natural gas and hydrogen gas, within an internal combustion engine. The gaseous fuel composition ratio is first sensed, such as by thermal conductivity, infrared signature, sound propagation speed, or equivalent mixture differentiation mechanisms and combinations thereof which are utilized as input(s) to a "multiple map" engine control module which modulates selected operating parameters of the engine, such as fuel injection and ignition timing, in response to the proportions of fuel gases available so that the engine operates correctly and at high efficiency irrespective of the gas mixture ratio being utilized. As a result, an engine configured according to the teachings of the present invention may be fueled from at least two different fuel sources without admixing constraints.

Heffel, James W. (Lake Matthews, CA); Scott, Paul B. (Northridge, CA); Park, Chan Seung (Yorba Linda, CA)

2011-11-01T23:59:59.000Z

315

Combustion efficiency analysis and key emission parameters of a turboprop engine at various loads  

Science Journals Connector (OSTI)

Abstract In this study, combustion efficiency of a military type turboprop engine is determined at various loads with the aid of emission data. Also, emission data collected from the engine run at various loads by experimental methods is used to introduce emission parameters such as the emission index, the power emission index and the energy emission index. The calculation method of the power emission index and the energy emission index for a turboprop engine is incorporated in literature by this study. Additionally, the relationship between determined parameters is proven in this study. As a result of the study, the combustion efficiency of the engine is found to be variable between 97.8% and 99.9%, as expected from a modern aircraft engine.

Yasin ?öhret; Olcay K?ncay; Tahir Hikmet Karakoç

2014-01-01T23:59:59.000Z

316

Advanced Natural Gas Reciprocating Engines (ARES)  

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

of the Art Pre-ARES Engines Characterized by the following: Limited investment in natural gas engines, based on derivatives of larger volume diesel engines Low...

317

Advanced natural-gas-fueled-engine development. Part 1: design and analyses. Final report, April 1985-July 1986  

SciTech Connect (OSTI)

The objective of the research program was to design an advanced natural gas engine (NG 1990) to be produced in the 1990's which will have high thermal efficiency and 40,000 hours durability of the valve-train components before major engine overhaul. Preliminary design and feasibility of the NG 1990 advanced natural gas engine was completed. A natural gas engine simulation model predicts up to 43.6% brake thermal efficiency (5840 Btu/hp-hr BSFC) for the advanced engine with the advanced concepts like K-Miller cycle (early intake valve closing), lean burn combustion - A/F ratio = 24.5, high compression ratio up to 14:1, higher turbocharger efficiency of 63.2% overall, and axially stratified charge combustion system resulting in fast burning. The use of K-Miller cycle reduces the in-cylinder gas temperatures and allows engine operation at 14:1 compression ratio without knock tendencies. The design and analyses of the NG 1990 engine and its components like K-Miller system were completed in the program.

Kamo, R.; Walson, R.; Kakwani, R.M.; Kamo, L.

1986-11-01T23:59:59.000Z

318

Summary results, CRC project CM-126, cetane engine combustion  

SciTech Connect (OSTI)

The results for the cetane engine tests showed a strong correlation between cetane number and ignition delay for all fuels tested. Also, a higher cetane number was generally reflected in better engine performance, emissions, and heat release results in the cetane engine. Comparison of test results with data from another program indicated that there were similarities between the cetane engine and an IDI engine but correlation with a DI engine was poor. Conclusions are that revised instrumentation and carefully controlled test procedures can yield consistent results from the cetane engine, however, a strong correlation between these results and the performance of a given fuel in modern design DI and IDI engines has not been established.

Johnson, R.T.; Schmid, K.R

1988-01-01T23:59:59.000Z

319

Apparatus for improving gasoline comsumption, power and reducing emission pollutants of internal combustion engines  

SciTech Connect (OSTI)

This patent describes an apparatus for improving performance and reducing fuel comsumption and emission pollutants from an internal combustion gasoline engine. This apparatus consists of: 1.) an internal combustion gasoline engine having, in part, an intake manifold and an exhaust manifold where the exhaust manifold is modified to include a manifold exhaust port; 2.) a modified internal combustion engine carburetor connected to the intake manifold on the engine; 3.) a positive crankcase ventilation valve (PCV) which has an input port conventionally connected to the internal combustion engine and also has a PCV output port; 4.) an automobile fuel pump having an input connected to a conventional fuel tank and having a fuel pump output port; 5.) a thermic reactor; 6.) a thermic reactor air cleaner pneumatically connected to the clean air input port on the thermic reactor; 7.) a catalytic gas injector; 8.) a fuel regulator/restrictor consisting of a solid block having a fuel pump input port and a carburetor output port.

Piedrafita, R.

1986-02-18T23:59:59.000Z

320

Towards cleaner combustion engines through groundbreaking detailed chemical kinetic models  

E-Print Network [OSTI]

of Wallington et al.10 describes the parts of automotive engines which could be sources of organic emissions

Paris-Sud XI, Université de

Note: This page contains sample records for the topic "advanced combustion engines" 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

Vaporizer design criteria for ethanol fueled internal combustion engines  

E-Print Network [OSTI]

been identified in conversion of diesel engines of farm tractors for using alcohol fuels. Distillation at atmospheric pressure does not yield 200 proof ethanol, (Winston, 1981), so with present technology, ethanol produced on farms is aqueous. A... engines 2. Modify diesel to tolerate straight ethanol injection. 3. Mix ethanol with diesel fuel. 4. Carburete the ethanol separately Converting Diesels To SI Engines Most diesel engines currently used in tractors operate with compression ratios...

Ariyaratne, Arachchi Rallage

2012-06-07T23:59:59.000Z

322

Effect of syngas composition on combustion and exhaust emission characteristics in a pilot-ignited dual-fuel engine operated in PREMIER combustion mode  

Science Journals Connector (OSTI)

The objective of this study was to investigate the performance and emissions of a pilot-ignited, supercharged, dual-fuel engine powered by different types of syngas at various equivalence ratios. It was found that if certain operating conditions were maintained, conventional engine combustion could be transformed into combustion with two-stage heat release. This mode of combustion has been investigated in previous studies with natural gas, and has been given the name \\{PREmixed\\} Mixture Ignition in the End-gas Region (PREMIER) combustion. PREMIER combustion begins as premixed flame propagation, and then, because of mixture autoignition in the end-gas region, ahead of the propagating flame front, a transition occurs, with a rapid increase in the heat release rate. It was determined that the mass of fuel burned during the second stage affected the rate of maximum pressure rise. As the fuel mass fraction burned during the second stage increased, the rate of maximum pressure rise also increased, with a gradual decrease in the delay between the first increase in the heat release rate following pilot fuel injection and the point when the transition to the second stage occurred. The H2 and CO2 content of syngas affected the engine performance and emissions. Increased H2 content led to higher combustion temperatures and efficiency, lower CO and HC emissions, but higher \\{NOx\\} emissions. Increased CO2 content influenced performance and emissions only when it reached a certain level. In the most recent studies, the mean combustion temperature, indicated thermal efficiency, and \\{NOx\\} emissions decreased only when the CO2 content of the syngas increased to 34%. PREMIER combustion did not have a major effect on engine cycle-to-cycle variation. The coefficient of variation of the indicated mean effective pressure (COVIMEP) was less than 4% for all types of fuel at various equivalence ratios, indicating that the combustion was within the stability range for engine operation.

Ulugbek Azimov; Eiji Tomita; Nobuyuki Kawahara; Yuji Harada

2011-01-01T23:59:59.000Z

323

Developing an approach utilizing local deterministic analysis to predict the cycle friction of the piston ring-pack in internal combustion engines  

E-Print Network [OSTI]

Nowadays, a rapid growth of internal combustion (IC) engines is considered to be a major contributor to energy crisis. About 20% of the mechanical loss in internal combustion engines directly goes to the friction loss ...

Liu, Yang, S.M. Massachusetts Institute of Technology

2013-01-01T23:59:59.000Z

324

SAPLE: Sandia Advanced Personnel Locator Engine.  

SciTech Connect (OSTI)

We present the Sandia Advanced Personnel Locator Engine (SAPLE) web application, a directory search application for use by Sandia National Laboratories personnel. SAPLE's purpose is to return Sandia personnel 'results' as a function of user search queries, with its mission to make it easier and faster to find people at Sandia. To accomplish this, SAPLE breaks from more traditional directory application approaches by aiming to return the correct set of results while placing minimal constraints on the user's query. Two key features form the core of SAPLE: advanced search query interpretation and inexact string matching. SAPLE's query interpretation permits the user to perform compound queries when typing into a single search field; where able, SAPLE infers the type of field that the user intends to search on based on the value of the search term. SAPLE's inexact string matching feature yields a high-quality ranking of personnel search results even when there are no exact matches to the user's query. This paper explores these two key features, describing in detail the architecture and operation of SAPLE. Finally, an extensive analysis on logged search query data taken from an 11-week sample period is presented.

Procopio, Michael J.

2010-04-01T23:59:59.000Z

326

Compact, electro-hydraulic, variable valve actuation system providing variable lift, timing and duration to enable high efficiency engine combustion control  

Broader source: Energy.gov [DOE]

Discusses development of advanced variable valve actuation system to enable high efficiency combustion highlighting advances to improving system packaging while reducing cost

327

Large Eddy Simulation (LES) Applied to Advanced Engine Combustion Research  

Broader source: Energy.gov [DOE]

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

328

Large Eddy Simulation (LES) Applied to Advanced Engine Combustion...  

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

B. Cuenot, CERFACS, France * Professor A. Dreizler, Technical University of Darmstadt, Germany * Professor B. Geurts, University of Twente, The Netherlands * Professor D. Haworth,...

329

Overview of DOE Advanced Combustion Engine R&D  

Broader source: Energy.gov [DOE]

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

330

Large Eddy Simulation (LES) Applied to Advanced Engine Combustion Research  

Broader source: Energy.gov [DOE]

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

331

Overview of the DOE Advanced Combustion Engine R&D  

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

operation LTC used generically to represent many processes Homogeneous-Charge Compression-Ignition (HCCI) Premixed-Charge Compression- Ignition (PCCI), SCCI, HECC, MK, UNIBUS, ......

332

Overview of DOE Advanced Combustion Engine R&D  

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

Review and Peer Evaluation Meeting DOE Vehicle Technologies Program and Hydrogen and Fuel Cells Program Washington, DC May 14-18, 2012 Vehicle Technologies Program Mission To...

333

General Motors Clean Combustion Engines Advanced with Predictive...  

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

for over 30 years. In the last few years, this partnership has become a Strategic Alliance, which includes a Cooperative Research and Development Agreement (CRADA), making it...

334

Graduate School of Advanced Science and Engineering Department of Integrative Bioscience and Biomedical Engineering  

E-Print Network [OSTI]

and Biomedical Engineering Master's Program Doctoral Program Research Area Research Instruction Application and Engineering Department of Integrative Bioscience and Biomedical Engineering 2014/092015/04 1 Department of Integrative Bioscience and Biomedical Engineering #12; Graduate School of Advanced Science and Engineering

Kaji, Hajime

335

ADVANCED MONITORING TO IMPROVE COMBUSTION TURBINE/COMBINED CYCLE CT/(CC) RELIABILITY, AVAILABILITY AND MAINTAINABILITY (RAM)  

SciTech Connect (OSTI)

Power generators are concerned with the maintenance costs associated with the advanced turbines that they are purchasing. Since these machines do not have fully established operation and maintenance (O&M) track records, power generators face financial risk due to uncertain future maintenance costs. This risk is of particular concern, as the electricity industry transitions to a competitive business environment in which unexpected O&M costs cannot be passed through to consumers. These concerns have accelerated the need for intelligent software-based diagnostic systems that can monitor the health of a combustion turbine in real time and provide valuable information on the machine's performance to its owner/operators. Such systems would interpret sensor and instrument outputs, correlate them to the machine's condition, provide interpretative analyses, forward projections of servicing intervals, estimate remaining component life, and identify faults. EPRI, Impact Technologies, Boyce Engineering, and Progress Energy have teamed to develop a suite of intelligent software tools integrated with a diagnostic monitoring platform that will, in real time, interpret data to assess the ''total health'' of combustion turbines. The Combustion Turbine Health Management System (CTHM) will consist of a series of dynamic link library (DLL) programs residing on a diagnostic monitoring platform that accepts turbine health data from existing monitoring instrumentation. The CTHM system will be a significant improvement over currently available techniques for turbine monitoring and diagnostics. CTHM will interpret sensor and instrument outputs, correlate them to a machine's condition, provide interpretative analyses, project servicing intervals, and estimate remaining component life. In addition, it will enable real-time anomaly detection and diagnostics of performance and mechanical faults, enabling power producers to more accurately predict critical component remaining useful life and turbine degradation.

Leonard Angello

2003-09-30T23:59:59.000Z

336

Development of Innovative Combustion Processes for a Direct-Injection Diesel Engine  

SciTech Connect (OSTI)

In support of the Partnership for a New Generation Vehicle (PNGV) emissions and fuel economy goals, a small-bore, high-speed, direct-injection (HSDI) diesel facility in which to conduct research into the physics of the combustion process relevant to these engines has been developed. The characteristics of this facility are described, and the motivation for selecting these characteristics and their relation to high efficiency, low-emission HSDI engine technology is discussed.

John Dec; Paul Miles

1999-01-01T23:59:59.000Z

337

Simulation of Wear in Combustion Engines V.L. Popov1  

E-Print Network [OSTI]

1 Simulation of Wear in Combustion Engines V.L. Popov1 , I.Yu. Smolin Institute of Strength Physics and Materials Science Russian Academy of Sciences, 634021 Tomsk, Russia A. Gervé, B. Kehrwald Institut für iron as well as of iron oxides. It is shown that the experimentally measured wear rate of about several

Berlin,Technische Universität

338

A Numerical Methodology for the Multi-objective Optimization of the DI Diesel Engine Combustion  

Science Journals Connector (OSTI)

Abstract DI Diesel engine are widely used both for industrial and automotive applications due to their durability and fuel economy. Nonethe- less, increasing environmental concerns force that type of engine to comply with increasingly demanding emission limits, so that, it has become mandatory to develop a robust design methodology of the DI Diesel combustion system focused on reduction of soot and \\{NOx\\} simultaneously while maintaining a reasonable fuel economy. In recent years, genetic algorithms and CFD three-dimensional combustion simulations have been successfully applied to that kind of problem. However, combining \\{GAs\\} op- timization with actual CFD three-dimensional combustion simulations can be too onerous since a large number of calculations is usually needed for the genetic algorithm to converge, resulting in a high computational cost and, thus, limiting the suitability of this method for industrial processes. In order to make the optimization process less time-consuming, CFD simulations can be more conveniently used to generate a training set for the learning process of an artifical neural network which, once correctly trained, can be used to forecast the engine outputs as a function of the design parameters during a GA optimization performing a so-called virtual optimization. In the current paper, a numerical methodology for the multi-objective virtual optimization of the combustion of an automotive DI Diesel engine, which relies on artificial neural networks and genetic algorithms, was developed.

Marco Costa; Gian Marco Bianchi; Claudio Forte; Giulio Cazzoli

2014-01-01T23:59:59.000Z

339

Model Development and Analysis of Clean & Efficient Engine Combustion  

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

capability to the engine designer Theoretical Bandwidth (GBs) CPU GPU The high performance computing hardware landscape is changing. In FY13: We showed potential of GPU for...

340

Stirling Engine Natural Gas Combustion Demonstration Program. Final report, October 1989-January 1991  

SciTech Connect (OSTI)

Fueled on natural gas, the Stirling engine is an inherently clean, quiet, and efficient engine. With increasing environmental concern for air quality and the increasingly more stringent requirements for low engine exhaust emissions, the Stirling engine may be an attractive alternative to internal combustion (IC) engines. The study has demonstrated that ultra low emissions can be attained with a Stirling-engine-driven electric generator configured to burn natural gas. Combustion parameters were optimized to produce the lowest possible exhaust emissions for a flame-type combustor without compromising overall engine thermal efficiency. A market application survey and manufacturing cost analysis indicate that a market opportunity potentially exists in the volumes needed to economically manufacture a newly designed Stirling engine (Mod III) for stationary applications and hybrid vehicles. The translation of such potential markets into actual markets does, however, pose difficult challenges as substantial investments are required. Also, the general acceptance of a new engine type by purchasers requires a considerable amount of time.

Ernst, W.; Moryl, J.; Riecke, G.

1991-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "advanced combustion engines" 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

Numerical modelling of solid fuel combustion processes using advanced CFD-based simulation tools  

Science Journals Connector (OSTI)

Computational modelling of combustion processes has been the subject of coninuous research at the Institute of Process Engineering and Power Plant Technology (IVD) over the last two decades. To this end, finite-volume-based computer codes have been developed. In the present paper, some fundamental ideas and approaches of the applied mathematical models and the numerical methods are described, followed by some examples of typical applications of the procedures with special emphasis on the validation of simulation results. These examples show that the application of combustion simulation codes has been extended to comprise a wide range of several different areas ranging from huge bituminous coal-fired utility boilers for electricity production to decentralised small-scale furnaces and tile stove heating inserts for domestic heating.

Uwe Schnell

2001-01-01T23:59:59.000Z

342

Combustion Phasing Model for Control of a Gasoline-Ethanol Fueled SI Engine with Variable Valve Timing  

E-Print Network [OSTI]

Combustion Phasing Model for Control of a Gasoline-Ethanol Fueled SI Engine with Variable Valve engine efficiency. Fuel-flexible engines permit the increased use of ethanol-gasoline blends. Ethanol points across the engine operating range for four blends of gasoline and ethanol. I. INTRODUCTION Fuel

343

Vehicle Technologies Office: FY 2004 Progress Report for Advanced  

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

4 Progress Report 4 Progress Report for Advanced Combustion Engine Research and Development to someone by E-mail Share Vehicle Technologies Office: FY 2004 Progress Report for Advanced Combustion Engine Research and Development on Facebook Tweet about Vehicle Technologies Office: FY 2004 Progress Report for Advanced Combustion Engine Research and Development on Twitter Bookmark Vehicle Technologies Office: FY 2004 Progress Report for Advanced Combustion Engine Research and Development on Google Bookmark Vehicle Technologies Office: FY 2004 Progress Report for Advanced Combustion Engine Research and Development on Delicious Rank Vehicle Technologies Office: FY 2004 Progress Report for Advanced Combustion Engine Research and Development on Digg Find More places to share Vehicle Technologies Office: FY 2004

344

Natural Gas-optimized Advanced Heavy-duty Engine  

E-Print Network [OSTI]

Natural Gas-optimized Advanced Heavy-duty Engine Transportation Research PIER Transportation of natural gas vehicles as a clean alternative is currently limited to smaller engine displacements and spark ignition, which results in lower performance. A large displacement natural gas engine has

345

Advanced Combustion  

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

lead to higher efficiencies, resulting in reduced fuel consumption and lower greenhouse gas emissions. Higher efficiency also reduces CO2 production for the same amount of energy...

346

Microwave-Assisted Ignition for Improved Internal Combustion Engine Efficiency  

E-Print Network [OSTI]

traditional power plant. A clean technology can also reduceOn the other hand, “clean” technology advancements can alsoA third consideration of clean technologies is whether it is

DeFilippo, Anthony Cesar

2013-01-01T23:59:59.000Z

347

Microwave-Assisted Ignition for Improved Internal Combustion Engine Efficiency  

E-Print Network [OSTI]

fraction of energy converted in the case of solar panels orsolar energy, wind energy, and the earth’s heat through respective advances in nuclear fission, hydroelectric dams, photovoltaic solar panels,

DeFilippo, Anthony Cesar

2013-01-01T23:59:59.000Z

348

Economic Comparison of Automobiles with Electric and with Combustion Engines: An Analytical Study  

Science Journals Connector (OSTI)

Abstract Automobiles with electric motor are becoming increasingly attractive alternative to the car with combustion engine, considering the effects on the environment as well as economic factors such as gradual increasing price of fluid fossil fuels and others. The European Union and therefore all member countries try to produce the least possible impact of activities on the environment in which we live. Transport is a sector of the national economy, which largely affects the environment. An effort to reduce the impact of road transport is therefore logical. The actual trend is the promotion of electric cars and the gradual replacement of combustion vehicles with “electro mobiles”. The aim of the paper is to analyze the impact of production, operation and fluidation of automobiles with electric and with combustion engines on the environment and economic interpretation of their effects on the economy. Direct and indirect effects of individual automobile types on the environment, with emphasis on air pollution, are described in the paper. The economic analysis is aimed to evaluate the effectiveness of investment comparing electric powered and combustion engine powered cars, considering the use by individuals and companies.

Rastislav Rajnoha; Martin Jankovský; Martina Merková

2014-01-01T23:59:59.000Z

349

Reactivity Controlled Compression Ignition (RCCI) Combustion on a Multi-Cylinder Light-Duty Diesel Engine  

SciTech Connect (OSTI)

Reactivity controlled compression ignition is a low-temperature combustion technique that has been shown, both in computational fluid dynamics modeling and single-cylinder experiments, to obtain diesel-like efficiency or better with ultra-low nitrogen oxide and soot emissions, while operating primarily on gasoline-like fuels. This paper investigates reactivity controlled compression ignition operation on a four-cylinder light-duty diesel engine with production-viable hardware using conventional gasoline and diesel fuel. Experimental results are presented over a wide speed and load range using a systematic approach for achieving successful steady-state reactivity controlled compression ignition combustion. The results demonstrated diesel-like efficiency or better over the operating range explored with low engine-out nitrogen oxide and soot emissions. A peak brake thermal efficiency of 39.0% was demonstrated for 2600 r/min and 6.9 bar brake mean effective pressure with nitrogen oxide emissions reduced by an order of magnitude compared to conventional diesel combustion operation. Reactivity controlled compression ignition emissions and efficiency results are compared to conventional diesel combustion operation on the same engine.

Curran, Scott [ORNL; Hanson, Reed M [ORNL; Wagner, Robert M [ORNL

2012-01-01T23:59:59.000Z

350

Circulating fluidized bed tehnology in biomass combustion-performance, advances and experiences  

SciTech Connect (OSTI)

Development of fluidized bed combustion (FBC) was started both in North America and in Europe in the 1960`s. In Europe and especially in Scandinavia the major driving force behind the development was the need to find new more efficient technologies for utilization of low-grade fuels like different biomasses and wastes. Both bubbling fluidized bed (BFB) and circulating fluidized bed (CFB) technologies were under intensive R&D,D efforts and have now advanced to dominating role in industrial and district heating power plant markets in Europe. New advanced CFB designs are now entering the markets. In North America and especially in the US the driving force behind the FBC development was initially the need to utilize different types of coals in a more efficient and environmentally acceptable way. The present and future markets seem to be mainly in biomass and multifuel applications where there is benefit from high combustion efficiency, high fuel flexibility and low emissions such as in the pulp and paper industry. The choice between CFB technology and BFB technology is based on selected fuels, emission requirements, plant size and on technical and economic feasibility. Based on Scandinavian experience there is vast potential in the North American industry to retrofit existing oil fired, pulverized coal fired, chemical recovery or grate fired boilers with FBC systems or to build a new FBC based boiler plant. This paper will present the status of CFB technologies and will compare technical and economic feasibility of CFB technology to CFB technology to BFB and also to other combustion methods. Power plant projects that are using advanced CFB technology e.g. Ahlstrom Pyroflow Compact technology for biomass firing and co-firing of biomass with other fuels will also be introduced.

Mutanen, K.I. [A. Ahlstrom Corporation, Varkaus (Finland)

1995-11-01T23:59:59.000Z

351

Computational experience with a three-dimensional rotary engine combustion model  

SciTech Connect (OSTI)

A new computer code was developed to analyze the chemically reactive flow and spray combustion processes occurring inside a stratified-charge rotary engine. Mathematical and numerical details of the new code were recently described by the present authors. The results are presented of limited, initial computational trials as a first step in a long-term assessment/validation process. The engine configuration studied was chosen to approximate existing rotary engine flow visualization and hot firing test rigs. Typical results include: (1) pressure and temperature histories, (2) torque generated by the nonuniform pressure distribution within the chamber, (3) energy release rates, and (4) various flow-related phenomena. These are discussed and compared with other predictions reported in the literature. The adequacy or need for improvement in the spray/combustion models and the need for incorporating an appropriate turbulence model are also discussed.

Raju, M.S.; Willis, E.A.

1990-04-01T23:59:59.000Z

352

Combustion engine with fuel injection system, and a spray valve for such an engine  

SciTech Connect (OSTI)

This paper describes a fuel system for a combustion engine have a cylinder with an air inlet passage. It comprises: a fuel spray valve having a fuel injection nozzle for spraying fuel into the cylinder air inlet passage and having a fuel spray valve passage leading to the nozzle, means for mounting the fuel spray valve to position the nozzle to open into the cylinder air inlet passage adjacent the cylinder, a fuel pump for providing fuel under pressure to the fuel spray valve passage to be sprayed from the fuel spray valve nozzle, and a fuel heating device connectable to an electrical power supply and disposed adjacent to the valve to be energized for heating the fuel to enhance finer spraying thereof by the fuel spray valve nozzle, the fuel heating device comprising means defining a spiral fuel flow path of selected length connected to and coaxial with the fuel spray valve passage to dispose the selected length of fuel flow path closely adjacent to the fuel spray valve passage, and a fuel heating element comprising a thermistor of a ceramic material of positive temperature coefficient of resistivity arranged to heat the selected length of the spiral fuel flow path to transfer heat to the fuel flowing in the spiral fuel flow path throughout the selected length of the spiral fuel flow path to substantially heat the fuel at a location closely adjacent to the fuel spray valve passage to enhance vaporizing of fuel being sprayed from the valve nozzle.

Wechem, G.V.; Beunk, G.; Van Den Elst, F.; Gerson, P.M.

1991-10-08T23:59:59.000Z

353

Development of Computational Capabilities to Predict the Corrosion Wastage of Boiler Tubes in Advanced Combustion Systems  

SciTech Connect (OSTI)

A comprehensive corrosion research project consisting of pilot-scale combustion testing and long-term laboratory corrosion study has been successfully performed. A pilot-scale combustion facility available at Brigham Young University was selected and modified to enable burning of pulverized coals under the operating conditions typical for advanced coal-fired utility boilers. Eight United States (U.S.) coals were selected for this investigation, with the test conditions for all coals set to have the same heat input to the combustor. In addition, the air/fuel stoichiometric ratio was controlled so that staged combustion was established, with the stoichiometric ratio maintained at 0.85 in the burner zone and 1.15 in the burnout zone. The burner zone represented the lower furnace of utility boilers, while the burnout zone mimicked the upper furnace areas adjacent to the superheaters and reheaters. From this staged combustion, approximately 3% excess oxygen was attained in the combustion gas at the furnace outlet. During each of the pilot-scale combustion tests, extensive online measurements of the flue gas compositions were performed. In addition, deposit samples were collected at the same location for chemical analyses. Such extensive gas and deposit analyses enabled detailed characterization of the actual combustion environments existing at the lower furnace walls under reducing conditions and those adjacent to the superheaters and reheaters under oxidizing conditions in advanced U.S. coal-fired utility boilers. The gas and deposit compositions were then carefully simulated in a series of 1000-hour laboratory corrosion tests, in which the corrosion performances of different commercial candidate alloys and weld overlays were evaluated at various temperatures for advanced boiler systems. Results of this laboratory study led to significant improvement in understanding of the corrosion mechanisms operating on the furnace walls as well as superheaters and reheaters in coal-fired boilers resulting from the coexistence of sulfur and chlorine in the fuel. A new corrosion mechanism, i.e., “Active Sulfidation Corrosion Mechanism,” has been proposed to account for the accelerated corrosion wastage observed on the furnace walls of utility boilers burning coals containing sulfur and chlorine. In addition, a second corrosion mechanism, i.e., “Active Sulfide-to-Oxide Corrosion Mechanism,” has been identified to account for the rapid corrosion attack on superheaters and reheaters. Both of the newly discovered corrosion mechanisms involve the formation of iron chloride (FeCl2) vapor from iron sulfide (FeS) and HCl, followed by the decomposition of FeCl2 via self-sustaining cycling reactions. For higher alloys containing sufficient chromium, the attack on superheaters and reheaters is dominated by Hot Corrosion in the presence of a fused salt. Furthermore, two stages of the hot corrosion mechanism have been identified and characterized in detail. The initiation of hot corrosion attack induced by molten sulfate leads to Stage 1 “acidic” fluxing and re-precipitation of the protective scale formed initially on the deposit-covered alloy surfaces. Once the protective scale is penetrated, Stage 2 Hot Corrosion is initiated, which is dominated by “basic” fluxing and re-precipitation of the scale in the fused salt. Based on the extensive corrosion information generated from this project, corrosion modeling was performed using non-linear regression analysis. As a result of the modeling efforts, two predictive equations have been formulated, one for furnace walls and the other for superheaters and reheaters. These first-of-the-kind equations can be used to estimate the corrosion rates of boiler tubes based on coal chemistry, alloy compositions, and boiler operating conditions for advanced boiler systems.

Kung, Steven; Rapp, Robert

2014-08-31T23:59:59.000Z

354

Advanced Biofuels: How Scientists are Engineering Bacteria to Help Drive  

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

Advanced Biofuels: How Scientists are Engineering Bacteria to Help Advanced Biofuels: How Scientists are Engineering Bacteria to Help Drive America Advanced Biofuels: How Scientists are Engineering Bacteria to Help Drive America December 6, 2011 - 2:12pm Addthis Strains of E. coli bacteria were engineered to digest switchgrass biomass and synthesize its sugars into gasoline, diesel and jet fuel. | Image courtesy of Berkeley Lab. Strains of E. coli bacteria were engineered to digest switchgrass biomass and synthesize its sugars into gasoline, diesel and jet fuel. | Image courtesy of Berkeley Lab. Liisa O'Neill Liisa O'Neill Former New Media Specialist, Office of Public Affairs Who knew Escherichia coli (E. coli) could help America reduce its dependence on foreign oil? A breakthrough with the bacteria could make it cheaper to produce fuel from switchgrass -- an advanced biofuel with the

355

Advanced Biofuels: How Scientists are Engineering Bacteria to Help Drive  

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

Advanced Biofuels: How Scientists are Engineering Bacteria to Help Advanced Biofuels: How Scientists are Engineering Bacteria to Help Drive America Advanced Biofuels: How Scientists are Engineering Bacteria to Help Drive America December 6, 2011 - 2:12pm Addthis Strains of E. coli bacteria were engineered to digest switchgrass biomass and synthesize its sugars into gasoline, diesel and jet fuel. | Image courtesy of Berkeley Lab. Strains of E. coli bacteria were engineered to digest switchgrass biomass and synthesize its sugars into gasoline, diesel and jet fuel. | Image courtesy of Berkeley Lab. Liisa O'Neill Liisa O'Neill Former New Media Specialist, Office of Public Affairs Who knew Escherichia coli (E. coli) could help America reduce its dependence on foreign oil? A breakthrough with the bacteria could make it cheaper to produce fuel from switchgrass -- an advanced biofuel with the

356

2008-01-0984 Active Combustion Control of Diesel HCCI Engine: Combustion  

E-Print Network [OSTI]

. Chauvin and O. Grondin IFP, France. N. Petit Ecole des Mines de Paris, France Copyright c 2008 Society according to the air path dynamics on a Diesel HCCI engine. This approach complements existing airpath of environmental restrictions and sustainable de- velopment, pollution standards have become more and more

357

E-Print Network 3.0 - advanced nuclear engineering Sample Search...  

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

Powered by Explorit Topic List Advanced Search Sample search results for: advanced nuclear engineering Page: << < 1 2 3 4 5 > >> 1 Nuclear Engineering Graduate Program Summary:...

358

Fuels for Advanced CIDI Engines and Fuel Cells: 2000 Annual Progress...  

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

Fuels for Advanced CIDI Engines and Fuel Cells: 2000 Annual Progress Report Fuels for Advanced CIDI Engines and Fuel Cells: 2000 Annual Progress Report DOE's Office of...

359

Integrated Combined Heat and Power/Advanced Reciprocating Internal...  

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

Combined Heat and PowerAdvanced Reciprocating Internal Combustion Engine System for Landfill Gas to Power Applications Development of an Improved Modular Landfill Gas Cleanup and...

360

The comparative analysis of diesel engine combustion and emission parameters fuelled with palm oil methyl esters and its diesel blends  

Science Journals Connector (OSTI)

In this work, the combustion and emission characteristics of a direct injection compression ignition engine fuelled with diesel-Palm Oil Methyl Ester (POME) blends are investigated. This study shows that the ignition delay decreases with increase in the POME addition. The maximum rate of pressure rise and maximum rate of heat release decreases with increase in POME addition at all loads. As the percentage of POME in the blend increases, the crank angle at which the maximum rate of heat release takes place advances. The brake thermal efficiency decreases with increase in POME addition. The unburned hydrocarbon, carbon monoxide and soot intensity decreases, while nitrogen oxides (NOx) increase with increase in POME addition. [Received: April 4, 2008; Accepted: November 24, 2008

G. Lakshmi Narayana Rao; S. Saravanan; P. Selva Ilavarasi

2009-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "advanced combustion engines" 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

Effect of the Addition of Diglyme in Diesel Fuel on Combustion and Emissions in a Compression?Ignition Engine  

Science Journals Connector (OSTI)

In the application of pure oxygenated fuels, Fleisch et al.,1 Kapus et al.,2 and Sorenson et al.3 have studied dimethyl ether (DME) in the modified diesel engine, and their results showed that the engine could achieve ultralow emission prospects without fundamental changes in combustion systems. ... 16 Mitsuo et al.17 investigated the effects of DGM on engine exhaust emissions in three different diesel engines. ... (18)?Heywood, J. B. Internal Combustion Engine Fundamentals; McGraw-Hill Book Company, New York, 1988. ...

Yi Ren; Zuohua Huang; Haiyan Miao; Deming Jiang; Ke Zeng; Bing Liu; Xibin Wang

2007-07-17T23:59:59.000Z

362

Combustion Characteristics of Diesohol Using Biodiesel as an Additive in a Direct Injection Compression Ignition Engine under Various Compression Ratios  

Science Journals Connector (OSTI)

Studies on combustion characteristics are essential for the optimization of engine design with the use of alternative fuels as compression ignition (CI) engines are basically designed to operate with neat diesel. ... Fleisch et al.,(6) Kapus and Ofner,(7) and Sorenson and Mikkelsen(8) have studied the utilization of pure oxygenated fuels in diesel engines and found that they can achieve ultralow emissions without a fundamental change in the combustion system. ... Engines Research Laboratory in the Mechanical Engineering Department with modern computerized experimental facilities to the international standards. ...

V. Arul Mozhi Selvan; R. B. Anand; M. Udayakumar

2009-10-05T23:59:59.000Z

363

Influence of Early Fuel Injection Timings on Premixing and Combustion in a Diesel Engine  

Science Journals Connector (OSTI)

Engine Laboratory, Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, 373-1 GuSeong-Dong, YuSeong-Gu, Daejeon 305-701, Republic of Korea ... Even with the same fueling rate, faster engine speed would need more advanced injection for achieving 6.5 ms of ?id; more than 100 CAD of ?id was needed at 3000 rpm, and it was increased to 200 CAD at 5000 rpm, which was quite occasional in modern automotive diesel engines. ... Several general observations may be made. ...

Sanghoon Kook; Seik Park; Choongsik Bae

2007-12-12T23:59:59.000Z

364

Advanced Combustion, Emission Control, Health Impacts, and Fuels Merit Review and Peer Evaluation  

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

06 06 a n n u a l p r o g r e s s r e p o r t L e s s d e p e n d e n c e o n f o r e i g n o i l t o d a y, a n d t r a n s i t i o n t o a p e t r o l e u m - f r e e , e m i s s i o n s - f r e e v e h i c l e t o m o r r o w . F r e e d o m C A r A n d V e h i C l e T e C h n o l o g i e s P r o g r A m AdvAnced combustion, emission controls, HeAltH impActs, And Fuels merit review And peer evAluAtion Department of Energy Washington, DC 20585 October 2006 Dear Colleague: This document summarizes the comments provided by the Review Panel for the FY 2006 Department of Energy (DOE) Advanced Combustion, Emission Controls, Health Impacts, and Fuels Merit Review and Peer Evaluation Meeting, the "ACE Review," held on May 15-18, 2006 at Argonne National Laboratory (ANL). The raw evaluations and comments of the panel were provided (with reviewers' names deleted) to the presenters in early June and were used by national laboratory

365

REQUEST BY CUMMINS ENGINE COMPANY, INC., FOR AN ADVANCE WAIVER  

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

CUMMINS ENGINE COMPANY, INC., FOR AN ADVANCE WAIVER CUMMINS ENGINE COMPANY, INC., FOR AN ADVANCE WAIVER OF DOMESTIC AND FOREIGN RIGHTS IN SUBJECT INVENTIONS MADE IN THE COURSE OF OR UNDER DEPARTMENT OF ENERGY COOPERATIVE AGREEMENT NO. DE-FC05-00OR22804; DOE WAIVER DOCKIET W(A)-00-021 [ORO-754] Petitioner, Cummins Engine Company, Inc., has made a timely request for an advance waiver to worldwide rights in Subject Inventions made in the course of or under Department of Energy (DOE) Cooperative Agreement No. DE-FC05-00OR22804. The scope of this work is to plan, develop and demonstrate advanced heavy duty diesel engine technologies to improve thermal efficiency and meet EPA proposed 2007 emissions of 0.2 NOx and 0.01 gm PM. This work is sponsored by the Office of Transportation Technologies, Office ol Heavy Vehicle

366

Advanced HD Engine Systems and Emissions Control Modeling and...  

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

Meeting vss089daw2012p.pdf More Documents & Publications Evaluation of 2010 Urea-SCR Technology for Hybrid Vehicles using PSAT System Simulations Advanced LD Engine Systems...

367

REQUEST BY CUMMINS ENGINE COMPANY, INC., FOR AN ADVANCE WAIVER  

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

plan, develop and demonstrate advanced heavy duty diesel engine technologies to improve thermal efficiency and meet EPA proposed 2007 emissions of 0.2 NOx and 0.01 gm PM. This...

368

Pressure-time characterization of an internal combustion engine with sinusoidal piston travel  

SciTech Connect (OSTI)

A unique engine configuration called the Stiller-Smith Engine creates a nonconventional pressure versus time response due to the sinusoidal nature of the motion-conversion mechanism. The differences in response are due in part to the utilization of stock piston/cylinder assemblies for engineering prototypes, and the elimination of piston dwell. If all other engine considerations were equal, fuel conversion criteria would at this stage of development favor the slider-crank, but newly identified design and dynamic characteristics of the sinusoidal engine may shift the balance. To understand the differences in potential power, several analytical procedures and experimental tests have been designed to determine the changes in combustion pressure due to sinusoidal piston travel. The experimental results from these test are presented along with a qualitative analysis for future piston/cylinder design requirements.

Smith, J.; Churchill, R.; Woodrow, G.

1987-01-01T23:59:59.000Z

369

Effects of primary breakup modeling on spray and combustion characteristics of compression ignition engines  

SciTech Connect (OSTI)

Injector flow dynamics and primary breakup processes are known to play a pivotal role in determining combustion and emissions in diesel engines. In the present study, we examine the effects of primary breakup modeling on the spray and combustion characteristics under diesel engine conditions. The commonly used KH model, which considers the aerodynamically induced breakup based on the Kelvin-Helmholtz instability, is modified to include the effects of cavitation and turbulence generated inside the injector. The KH model and the new (KH-ACT) model are extensively evaluated by performing 3-D time-dependent simulations with detailed chemistry under diesel engine conditions. Results indicate that the inclusion of cavitation and turbulence enhances primary breakup, leading to smaller droplet sizes, decrease in liquid penetration, and increase in the radial dispersion of spray. Predictions are compared with measurements for non-evaporating and evaporating sprays, as well as with flame measurements. While both the models are able to reproduce the experimentally observed global spray and combustion characteristics, predictions using the KH-ACT model exhibit closer agreement with measurements in terms of liquid penetration, cone angle, spray axial velocity, and liquid mass distribution for non-evaporating sprays. Similarly, the KH-ACT model leads to better agreement with respect to the liquid length and vapor penetration distance for evaporating sprays, and with respect to the flame lift-off location for combusting sprays. The improved agreement is attributed to the ability of the new model to account for the effects of turbulence and cavitation generated inside the injector, which enhance the primary breakup. Results further indicate that the combustion under diesel engine conditions is characterized by a double-flame structure with a rich premixed reaction zone near the flame stabilization region and a non-premixed reaction zone further downstream. This flame structure is consistent with the Dec's model for diesel engine combustion (Dec, 1997), and well captured by a newly developed flame index based on the scalar product of CO and O{sub 2} mass fraction gradients. (author)

Som, S.; Aggarwal, S.K. [Department of Mechanical and Industrial Engineering, University of Illinois at Chicago, Chicago, IL 60607 (United States)

2010-06-15T23:59:59.000Z

370

Cylinder Pressures and Vibration in Internal Combustion Engine Condition G O Chandroth, A J C Sharkey and N E Sharkey  

E-Print Network [OSTI]

of sensory information. Inducing several faults in a 4 stroke diesel engine, cylinder pressure (P­stroke high speed diesel engine. The explosion of the hydrocarbon­air mixture within the complex geometryCylinder Pressures and Vibration in Internal Combustion Engine Condition Monitoring G O Chandroth

Sharkey, Amanda

371

Fundamentals of High Pressure Combustion Chapter in High Pressure Processes in Chemical Engineering, Edited by Maximillian Lackner,  

E-Print Network [OSTI]

Fundamentals of High Pressure Combustion Chapter in High Pressure Processes in Chemical Engineering for more than 50 years and are expected to continue to do so [2]. Diesel engines obtain pressures as large as 60atm after ignition [3, 4, 5, 6, 7]. Figure 1 presents a schematic of diesel and gas turbine engine

Miller, Richard S.

372

Mr. R. B. Bell, Jr. Combustion Engineering, Inc. Post Office Box 500  

Office of Legacy Management (LM)

g@ *tq g@ *tq 47 e "Y q$ . -0 t: 2 ~ i' ,; B 0 e %d&$ Department of Energy Washington, DC 20585 Mr. R. B. Bell, Jr. Combustion Engineering, Inc. Post Office Box 500 Windsor, Connecticut 06095-0500 Dear Mr. Bell: I have received two copies of the access agreement for the radiological survey of the Combustion Engineering Property at 1000 Prospect Hill Road in Windsor. I have signed the agreements on behalf of the U.S. Department of Energy, and I am returning one signed original copy to you, By copy of this letter, I am requesting that the Oak Ridge Institute for Science and Education contact you or Mr. Moulton to make arrangements for the survey. If you have any questions or if I may be of assistance, please call me at 301-903-8149. Sincerely

373

A Study of the Theoretical Potential of Thermochemical Exhaust Heat Recuperation for Internal Combustion Engines  

SciTech Connect (OSTI)

We present a detailed thermodynamic analysis of thermochemical recuperation (TCR) applied to an idealized internal combustion engine with single-stage work extraction. Results for several different fuels are included. For a stoichiometric mixture of methanol and air, TCR can increase the estimated ideal engine Second Law efficiency by about 3% for constant pressure reforming and over 5% for constant volume reforming. For ethanol and isooctane the estimated Second Law efficiency increases for constant volume reforming are 9% and 11%, respectively. The Second Law efficiency improvements from TCR result primarily from the higher intrinsic exergy of the reformed fuel and pressure boost associated with gas mole increase. Reduced combustion irreversibility may also yield benefits for future implementations of combined cycle work extraction.

Chakravarthy, Veerathu K [ORNL] [ORNL; Daw, C Stuart [ORNL] [ORNL; Pihl, Josh A [ORNL] [ORNL; Conklin, Jim [ORNL] [ORNL

2010-01-01T23:59:59.000Z

374

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

Science Journals Connector (OSTI)

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

Ni Zhang; Zuohua Huang; Xiangang Wang; Bin Zheng

2011-03-01T23:59:59.000Z

375

Modeling of contact between liner finish and piston ring in internal combustion engines based on 3D measured surface  

E-Print Network [OSTI]

When decreasing of fossil fuel supplies and air pollution are two major society problems in the 21st century, rapid growth of internal combustion (IC) engines serves as a main producer of these two problems. In order to ...

Zhao, Qing, S.M. Massachusetts Institute of Technology

2014-01-01T23:59:59.000Z

376

E-Print Network 3.0 - advanced combustion systems Sample Search...  

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

of these include pulverized coal combustion... combustion in gas turbines and coal gasification-fuel cell systems hold out ... Source: Kammen, Daniel M. - Renewable and...

377

Technologies for Gaseous Fueled Advanced Reciprocating Engine...  

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

* A user facility to developtest technologies to improve DE performance. 2 Advanced Laser Ignition System (ALIS): * Laser ignition was shown to extend lean ignitability of...

378

Advances in Engineering and Applications of Hexagonal Ferrites in Russia  

E-Print Network [OSTI]

4 Advances in Engineering and Applications of Hexagonal Ferrites in Russia Marina Y. Koledintseva1, Missouri 2Moscow Power Engineering Institute (Technological University), Moscow 1U.S.A. 2Russia 1-80 GHz), W (80-100 GHz) bands, and higher, have been also studied and applied in Russia since middle 1950

Koledintseva, Marina Y.

379

Advanced Gasoline Turbocharged Direct Injection (GTDI) Engine...  

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

in Gasoline Turbocharged Direct Injection (GTDI) engine technology in the near term as a cost effective, high volume, fuel economy solution, marketed globally as EcoBoost...

380

Hybrid combustion-premixed gasoline homogeneous charge ignited by injected diesel fuel-4-stroke cycle engines  

SciTech Connect (OSTI)

This paper describes the formation and testing of two hybrid combustion engines, wherein a premixed gasoline homogeneous charge was ignited by a small amount of injected diesel fuel under high compression ratio, by modifying open chamber and prechamber 4-stroke cycle diesel engines. It was found that the premixed gasoline was effective not only for decreasing the fuel consumption but also for reducing the smoke density both in the heavy and over-load regions. The effect of introducing a small amount N/sub 2/ gas for suppressing the diesel knock in the heavy load region also was examined.

Yonetani, H.; Okanishi, N.; Fukutani, I.; Watanabe, E.

1989-01-01T23:59:59.000Z

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


381

Advanced Turbine Technology Applications Project (ATTAP) and Hybrid Vehicle Turbine Engine Technology Support project (HVTE-TS): Final summary report  

SciTech Connect (OSTI)

This final technical report was prepared by Rolls-Royce Allison summarizing the multiyear activities of the Advanced Turbine Technology Applications Project (ATTAP) and the Hybrid Vehicle Turbine Engine Technology Support (HVTE-TS) project. The ATTAP program was initiated in October 1987 and continued through 1993 under sponsorship of the US Department of Energy (DOE), Energy Conservation and Renewable Energy, Office of Transportation Technologies, Propulsion Systems, Advanced Propulsion Division. ATTAP was intended to advance the technological readiness of the automotive ceramic gas turbine engine. The target application was the prime power unit coupled to conventional transmissions and powertrains. During the early 1990s, hybrid electric powered automotive propulsion systems became the focus of development and demonstration efforts by the US auto industry and the Department of energy. Thus in 1994, the original ATTAP technology focus was redirected to meet the needs of advanced gas turbine electric generator sets. As a result, the program was restructured to provide the required hybrid vehicle turbine engine technology support and the project renamed HVTE-TS. The overall objective of the combined ATTAP and HVTE-TS projects was to develop and demonstrate structural ceramic components that have the potential for competitive automotive engine life cycle cost and for operating 3,500 hr in an advanced high temperature turbine engine environment. This report describes materials characterization and ceramic component development, ceramic components, hot gasifier rig testing, test-bed engine testing, combustion development, insulation development, and regenerator system development. 130 figs., 12 tabs.

NONE

1998-12-01T23:59:59.000Z

382

Proceedings of the 1987 coatings for advanced heat engines workshop  

SciTech Connect (OSTI)

This Workshop was conducted to enhance communication among those involved in coating development for improved heat engine performance and durability. We were fortunate to have Bill Goward review the steady progress and problems encountered along the way in the use of thermal barrier coatings (TBC) in aircraft gas turbine engines. Navy contractors discussed their work toward the elusive goal of qualifying TBC for turbine airfoil applications. In the diesel community, Caterpillar and Cummins are developing TBC for combustion chamber components as part of the low heat rejection diesel engine concept. The diesel engine TBC work is based on gas turbine technology with a goal of more than twice the thickness used on gas turbine engine components. Adoption of TBC in production for diesel engines could justify a new generation of plasma spray coating equipment. Increasing interests in tribology were evident in this Workshop. Coatings have a significant role in reducing friction and wear under greater mechanical loadings at higher temperatures. The emergence of a high temperature synthetic lubricant could have an enormous impact on diesel engine design and operating conditions. The proven coating processes such as plasma spray, electron-beam physical vapor deposition, sputtering, and chemical vapor deposition have shown enhanced capabilities, particularly with microprocessor controls. Also, the newer coating schemes such as ion implantation and cathodic arc are demonstrating intriguing potential for engine applications. Coatings will play an expanding role in higher efficiency, more durable heat engines.

Not Available

1987-01-01T23:59:59.000Z

383

Synthesis of three advanced biofuels from ionic liquid-pretreated switchgrass using engineered Escherichia coli  

Science Journals Connector (OSTI)

...existing internal combustion engines. Based in part on previous work (9), we constructed a...Microbial cellulose utilization: Fundamentals and biotechnology . Microbiol...precursors suitable for gasoline, diesel, and jet engines directly from ionic liquid-treated...

Gregory Bokinsky; Pamela P. Peralta-Yahya; Anthe George; Bradley M. Holmes; Eric J. Steen; Jeffrey Dietrich; Taek Soon Lee; Danielle Tullman-Ercek; Christopher A. Voigt; Blake A. Simmons; Jay D. Keasling

2011-01-01T23:59:59.000Z

384

Chemical Kinetic Models for HCCI and Diesel Combustion  

SciTech Connect (OSTI)

Hydrocarbon fuels for advanced combustion engines consist of complex mixtures of hundreds or even thousands of different components. These components can be grouped into a number of chemically distinct classes, consisting of n-paraffins, branched paraffins, cyclic paraffins, olefins, oxygenates, and aromatics. Biodiesel contains its own unique chemical class called methyl esters. The fractional amounts of these chemical classes are quite different in gasoline, diesel fuel, oil-sand derived fuels and bio-derived fuels, which contributes to the very different combustion characteristics of each of these types of combustion systems. The objectives of this project are: (1) Develop detailed chemical kinetic models for fuel components used in surrogate fuels for diesel and HCCI engines; (2) Develop surrogate fuel models to represent real fuels and model low temperature combustion strategies in HCCI and diesel engines that lead to low emissions and high efficiency; and (3) Characterize the role of fuel composition on low temperature combustion modes of advanced combustion engines.

Pitz, W J; Westbook, C K; Mehl, M

2008-10-30T23:59:59.000Z

385

Effects of Fuel Injection Timing on Combustion and Emission Characteristics of a Diesel Engine Fueled with Diesel?Propane Blends  

Science Journals Connector (OSTI)

Effects of Fuel Injection Timing on Combustion and Emission Characteristics of a Diesel Engine Fueled with Diesel?Propane Blends ... State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China, and College of Vehicle & Motive Power Engineering, Henan University of Science and Technology, Luoyang, 471003, China ... It is the third most widely used vehicle fuel behind the gasoline and diesel fuels.1 Diesel fuel has been widely used in internal combustion engines due to its high thermal efficiency and low CO2 emission. ...

Zhihao Ma; Zuohua Huang; Chongxiao Li; Xinbin Wang; Haiyan Miao

2007-03-07T23:59:59.000Z

386

Identification of Potential Efficiency Opportunities in Internal Combustion Engines Using a Detailed Thermodynamic Analysis of Engine Simulation Results  

SciTech Connect (OSTI)

Current political and environmental concerns are driving renewed efforts to develop techniques for improving the efficiency of internal combustion engines. A detailed thermodynamic analysis of an engine and its components from a 1st and 2nd law perspective is necessary to characterize system losses and to identify efficiency opportunities. We have developed a method for performing this analysis using engine-simulation results obtained from WAVE , a commercial engine-modeling software package available from Ricardo, Inc. Results from the engine simulation are post-processed to compute thermodynamic properties such as internal energy, enthalpy, entropy, and availability (or exergy), which are required to perform energy and availability balances of the system. This analysis is performed for all major components (turbocharger, intercooler, EGR cooler, etc.) of the engine as a function of crank angle degree for the entire engine cycle. With this information, we are able to identify potential efficiency opportunities as well as guide engine experiments for exploring new technologies for recovering system losses.

Edwards, Kevin Dean [ORNL; Wagner, Robert M [ORNL; Graves, Ronald L [ORNL

2008-01-01T23:59:59.000Z

387

Advanced Process Engineering Co-Simulator (APECS) | Open Energy Information  

Open Energy Info (EERE)

Advanced Process Engineering Co-Simulator (APECS) Advanced Process Engineering Co-Simulator (APECS) Jump to: navigation, search Tool Summary LAUNCH TOOL Name: APECS Agency/Company /Organization: National Energy Technology Laboratory Partner: ANSYS Sector: Energy Focus Area: Industry Topics: Pathways analysis Resource Type: Software/modeling tools User Interface: Desktop Application Website: www.netl.doe.gov/technologies/coalpower/advresearch/apecs.html APECS Screenshot References: APECS Homepage[1] Logo: APECS Advanced Process Engineering Co-Simulator (APECS) is an innovative software tool that provides process/equipment co-simulation capabilities for model-based decision support in steady-state process design and optimization. Developed by NETL, ANSYS, and other research partners, the Advanced Process

388

Advanced Process Engineering Co-Simulator (APECS) | Open Energy Information  

Open Energy Info (EERE)

Advanced Process Engineering Co-Simulator (APECS) Advanced Process Engineering Co-Simulator (APECS) (Redirected from APECS) Jump to: navigation, search Tool Summary Name: APECS Agency/Company /Organization: National Energy Technology Laboratory Partner: ANSYS Sector: Energy Focus Area: Industry Topics: Pathways analysis Resource Type: Software/modeling tools User Interface: Desktop Application Website: www.netl.doe.gov/technologies/coalpower/advresearch/apecs.html APECS Screenshot References: APECS Homepage[1] Logo: APECS Advanced Process Engineering Co-Simulator (APECS) is an innovative software tool that provides process/equipment co-simulation capabilities for model-based decision support in steady-state process design and optimization. Developed by NETL, ANSYS, and other research partners, the Advanced Process

389

EIS-0290: Idaho National Engineering and Environmental Laboratory Advanced  

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

90: Idaho National Engineering and Environmental Laboratory 90: Idaho National Engineering and Environmental Laboratory Advanced Mixed Waste Treatment Project (AMWTP) EIS-0290: Idaho National Engineering and Environmental Laboratory Advanced Mixed Waste Treatment Project (AMWTP) SUMMARY The AMWTP Final EIS assesses the potential environmental impacts associated with alternatives related to the construction and operation of a proposed waste treatment facility at the Idaho National Environmental and Engineering Laboratory (INEEL). PUBLIC COMMENT OPPORTUNITIES None available at this time. DOCUMENTS AVAILABLE FOR DOWNLOAD March 26, 2013 EIS-0290-SA-03: Supplement Analysis Disposition of Mixed Low-Level Waste and Low-Level Waste from Advanced Mixed Waste Treatment Project at Commercial Facilities, Idaho May 1, 2009 EIS-0290-SA-02: Supplement Analysis

390

Part-load particulate matter from a GDI engine and the connection with combustion characteristics  

Science Journals Connector (OSTI)

Abstract The Gasoline Direct Injection engines are an important source of ultra-fine particulate matter. Significant research effort is still required as improved understanding of soot formation is critical in considering further development or adoption of new technologies. Experimental measurements of engine-out soot emissions have been taken from a modern Euro IV GDI engine at part-load operating conditions. The engine speed and torque were varied in the range 1600–3700 rev/min, and 30–120 Nm, respectively. The engine was invariably operated in stoichiometric and homogeneous combustion mode, with fuel injection early in the intake stroke. The results indicate that for engine load in excess of 3 bar Brake Mean Effective Pressure, due to incomplete gas-phase mixture preparation, a consistent linear correlation establishes between combustion duration and soot particle number. On average, a sixfold increase in number concentration between 1.0 and 6.0 × 106 particle per cc, arises from shortening the rapid duration of 4 crank angle degrees. For engine speed in excess of 3000 rev/min and load in excess of 7 bar BMEP, this correlation appears to be superseded by the effects of spray-to-piston impingement and consequent pool-fire. Three main areas of concern have been identified within the part-load running envelope: (1) the higher load-lower speed range and (2) the mid load-mid speed range, where high nucleation rates induce copious increases of engine-out soot mass; (3) the upper part-load range where, most likely as a result of spray impingement, high levels of soot concentration (up to 10 million particles per cc) are emitted with very small size (23–40 nm).

F. Bonatesta; E. Chiappetta; A. La Rocca

2014-01-01T23:59:59.000Z

391

Advanced Circulating Pressurized Fluidized Bed Combustion (APFBC) Repowering Concept Assessment at Duke Energy's Dan River Station  

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

Wolfmeyer et al. APFBC Repowering Assessment at Duke Energy's Dan River Station Wolfmeyer et al. APFBC Repowering Assessment at Duke Energy's Dan River Station paper 970561 Page 1 of 36 Advanced Circulating Pressurized Fluidized Bed Combustion (APFBC) Repowering Concept Assessment at Duke Energy's Dan River Station John C. Wolfmeyer, P.E., and Cal Jowers, P.E. Duke Energy / Charlotte, North Carolina Richard E. Weinstein, P.E., Harvey N. Goldstein, P.E., and Jay S. White Parsons Power Group Inc. / Reading, Pennsylvania Robert W. Travers, P.E. U.S. Department of Energy Office of Fossil Energy / Germantown, Maryland electronic mail addresses/phone no. electronic mail addresses/phone no. Wolfmeyer { JCWolfme@Duke-Energy.COM 704 / 382-4017 Goldstein { Harvey_N_Goldstein@Parsons.COM 610 / 855-3281 Jowers { -- 704 / 382-9577 White { Jay_S_White@Parsons.COM

392

Advanced Natural Gas Reciprocating Engines (ARES)  

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

Natural Gas Reciprocating Engines (ARES) Contract: DE-FC26-01CH11080 GE Energy, Dresser Inc. 102010 - 122013 Jim Zurlo, Principal Investigator james.zurlo@ge.com Tel....

393

Investigation of Fuel Effects on Dilute, Mixing-Controlled Combustion in an Optical Direct-Injection Diesel Engine  

Science Journals Connector (OSTI)

School of Engineering, San Francisco State University, San Francisco, California 94132, and Combustion Research Facility, Sandia National Laboratories, Livermore, California 94550 ... Additionally, data obtained from this study provide fundamental insights into NOx and PM formation mechanisms in diesel engines. ... Results show that increasing fuel oxygenation produces lower in-cylinder and engine-out soot levels, consistent with existing studies of the effects of fuel oxygenation on soot emissions from diesel engines. ...

A. S. (Ed) Cheng; Ansis Upatnieks; Charles J. Mueller

2007-05-25T23:59:59.000Z

394

The influence of fuel composition on the combustion and emission characteristics of natural gas fueled engines  

Science Journals Connector (OSTI)

Abstract As global energy demand rises, natural gas (NG) plays an important strategic role in energy supply. Natural gas is the cleanest fossil fuel that has been investigated extensively for use in spark-ignition (SI) and compression-ignition (CI) engines. This paper reviews the research on the effects of natural gas composition on combustion and emission characteristics of natural gas fueled internal combustion engines (ICEs) and reports the most achievements obtained by researchers in this field. It has been reported that the engine performance and emission are greatly affected by varying compositions of natural gas. The most important NG fuel property is the Wobbe number (WN). Generally, it was agreed by researchers that the fuels with higher hydrocarbons, higher WN, and higher energy content exhibited better fuel economy and carbon dioxide (CO2) emissions. Nitrogen oxides (NOx) emissions were also increased for gases with higher levels of higher WN, while total hydrocarbons (THCs), carbon monoxide (CO), showed some reductions for these gases. On the other hand, particulate matter (PM) emissions did not show any fuel effects. Moreover, adding of small fractions of higher alkanes, such as ethane and propane, significantly improved ignition qualities of natural gas engines. The results presented provide a good insight for researchers to pursue their future research on natural gas fueled ICEs.

Amir-Hasan Kakaee; Amin Paykani; Mostafa Ghajar

2014-01-01T23:59:59.000Z

395

Graduate School of Advanced Science and Engineering Department of Nanoscience and Nanoengineering  

E-Print Network [OSTI]

Graduate School of Advanced Science and Engineering Department of Nanoscience and Engineering Department of Nanoscience and Nanoengineering 2014/092015/04 1 Department of Nanoscience and Nanoengineering #12; Graduate School of Advanced Science and Engineering Department of Nanoscience

Kaji, Hajime

396

Graduate School of Advanced Science and Engineering Department of Applied Chemistry  

E-Print Network [OSTI]

Graduate School of Advanced Science and Engineering Department of Applied Chemistry Master of Advanced Science and Engineering Department of Applied Chemistry Master's Program Doctoral Program Inorganic Synthetic Chemistry Professor Doctor of Engineering (Waseda Univ.) SUGAHARA Yoshiyuki Polymer

Kaji, Hajime

397

Technology Development for Light Duty High Efficient Diesel Engines...  

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

optimization. deer09stanton.pdf More Documents & Publications Light Duty Efficient Clean Combustion Advanced Diesel Engine Technology Development for HECC Effects of Biomass Fuels...

398

A predictive model for the combustion process in dual fuel engines  

SciTech Connect (OSTI)

A multi-zone model has been developed for the prediction of the combustion processes in dual fuel engines and some of their performance features. The consequences of the interaction between the gaseous and the diesel fuels and the resulting modification to the combustion processes are considered. A reacting zone has been incorporated in the model to describe the partial oxidation of the gaseous fuel-air mixture while detailed kinetic schemes are employed to describe the oxidation of the gaseous fuel, right from the start of compression to the end of the expansion process. The associated formation and concentrations of exhaust emissions are correspondingly established. The model can predict the onset of knock as well as the operating features and emissions for the more demanding case of light load performance. Predicted values for methane operation show good agreement with corresponding experimental values.

Liu, Z.; Karim, G.A. [Univ. of Calgary, Alberta (Canada)

1995-12-31T23:59:59.000Z

399

Investigation of the effects of renewable diesel fuels on engine performance, combustion, and emissions  

Science Journals Connector (OSTI)

Abstract A study was undertaken to investigate renewable fuels in a compression-ignition internal combustion engine. The focus of this study was the effect of newly developed renewable fuels on engine performance, combustion, and emissions. Eight fuels were investigated, and they include diesel, jet fuel, a traditional biodiesel (fatty acid methyl ester: FAME), and five next generation biofuels. These five fuels were derived using a two-step process: hydrolysis of the oil into fatty acids (if necessary) and then a thermo-catalytic process to remove the oxygen via a decarboxylation reaction. The fuels included a fed batch deoxygenation of canola derived fatty acids (DCFA), a fed batch deoxygenation of canola derived fatty acids with varying amounts of H2 used during the deoxygenation process (DCFAH), a continuous deoxygenation of canola derived fatty acids (CDCFA), fed batch deoxygenation of lauric acid (DLA), and a third reaction to isomerize the products of the deoxygenated canola derived fatty acid alkanes (IPCF). Diesel, jet fuel, and biodiesel (FAME) have been used as benchmarks for comparing with the newer renewable fuels. The results of the experiments show slightly lower mechanical efficiency but better brake specific fuel consumption for the new renewable fuels. Results from combustion show shorter ignition delays for most of the renewable (deoxygenated) fuels with the exception of fed batch deoxygenation of lauric acid. Combustion results also show lower peak in-cylinder pressures, reduced rate of increase in cylinder pressure, and lower heat release rates for the renewable fuels. Emission results show an increase in hydrocarbon emissions for renewable deoxygenated fuels, but a general decrease in all other emissions including NOx, greenhouse gases, and soot. Results also demonstrate that isomers of the alkanes resulting from the deoxygenation of the canola derived fatty acids could be a potential replacement to conventional fossil diesel and biodiesel based on the experiments in this work.

Dolanimi Ogunkoya; William L. Roberts; Tiegang Fang; Nirajan Thapaliya

2015-01-01T23:59:59.000Z

400

SYMPOSIUM ON TURBULENCE AND COMBUSTION - SPECIAL SYMPOSIUM TO BRING TOGETHER TOP RESEARCHERS IN THE FIELDS OF FLUID TURBULENCE AND COMBUSTION TO PROMOTE ADVANCES IN TURBULENT, REACTING FLOWS  

SciTech Connect (OSTI)

A Symposium on Turbulence and Combustion was held at Cornell University on August 3-4, 2009. The overall goal of the Symposium was to promote future advances in the study of turbulence and combustion, through an unique forum intended to foster interactions between leading members of these two research communities. The Symposium program consisted of twelve invited lectures given by world-class experts in these fields, two poster sessions consisting of nearly 50 presentations, an open forum, and other informal activities designed to foster discussion. Topics covered in the lectures included turbulent dispersion, wall-bounded flows, mixing, finite-rate chemistry, and others, using experiment, modeling, and computations, and included perspectives from an international community of leading researchers from academia, national laboratories, and industry.

Caughey, David

2010-10-08T23:59:59.000Z

Note: This page contains sample records for the topic "advanced combustion engines" 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

Controlling the start of combustion on an HCCI Diesel engine Mathieu HILLION, Jonathan CHAUVIN, and Nicolas PETIT  

E-Print Network [OSTI]

Controlling the start of combustion on an HCCI Diesel engine Mathieu HILLION, Jonathan CHAUVIN time is adjusted based on a simple Knock Integral Model and real time intake manifold signals com- bustion modes. For Diesel engines, cost of after treatment devices are usually high. In turn

402

Advanced Materials for Aircraft Engine Applications  

Science Journals Connector (OSTI)

...strength and long creep lives, as-HIP material...cycle fatigue (LCF) lives. LCF is a failure...landing for an aircraft turbine engine). A classic...ductility and fatigue life. Examination ofLCF-tested...the atomizer, and residual dirt from gas supply lines and...

DANIEL G. BACKMAN; JAMES C. WILLIAMS

1992-02-28T23:59:59.000Z

403

Combustion, performance and emission analysis of diesel engine fuelled with methyl esters of Pongamia oil  

Science Journals Connector (OSTI)

The methyl esters of vegetable oils, known as biodiesel are increasingly becoming popular because of their low environmental impact and potential as a green alternative fuel for diesel engine, and that they would not require significant modification of existing engine hardware. Methyl ester of Pongamia oil (PME) is derived through transesterification process. Experimental investigations have been carried out to examine properties, performance and emissions of different blends (B00, B20, B40, B60, B80 and B100) of PME comparison to diesel. A computer assisted single cylinder constant speed water cooled four stroke direct diesel engine (5 HP), which is commonly used in the agricultural sector for driving the pumps and small electrical generators is selected for the experimental investigation. The performance, emissions and combustion characteristics are analysed. The combustion parameters considered for this analysis are cylinder pressure and rate of heat release. The brake thermal efficiency is slightly reduced and hydrocarbon, carbon monoxide and smoke emissions in the exhaust are reduced when fuelled with methyl esters compared to diesel. But the NOx emissions are high when fuelled with methyl esters compared to diesel. [Received: December 11, 2009; Accepted: March 21, 2010

T. Hari Prasad; K. Hema Chandra Reddy; M. Muralidhara Rao

2010-01-01T23:59:59.000Z

404

Engineered Sequestration and Advanced Power Technologies  

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

Sequestration and Advanced Power Technologies. Klaus Lackner, Columbia Sequestration and Advanced Power Technologies. Klaus Lackner, Columbia University. Predictions of innovative energy technologies for the next century usually include everything from fusion to photovoltaics with the one notable exception of fossil fuels. Because of fears of diminishing supplies, pollution and climate change, the public is reluctant to consider these hydrocarbon fuels for the energy needs of the twenty- first century. An energy strategy for the new century, however, cannot ignore fossil fuels. Contrary to popular belief, they are plentiful and inexpensive. While it is true that fossil fuels are limited by their environmental impact, new technologies to eliminate environmental concerns are currently being developed. Managing the emission of

405

Prediction of the Effects of Ethanol-Diesel Fuel Blends on Diesel Engine Performance Characteristics, Combustion, Exhaust Emissions, and Cost  

Science Journals Connector (OSTI)

Bilgin et al.’s and ?ahin’s experimental studies which have been used in comparisons with numerical results of the present model have been performed in a single cylinder diesel engine at Karadeniz Technical University, Engineering Faculty Mechanical Engineering Department Internal Combustion Engines Laboratory. ... Durgun, O. A practical method for calculation engine cycles Union of Chambers of Turkish Engineers and Architects, Chamber of Mech. ... Dieselhols (blends of diesels, biodiesels, and alcohols) have received considerable attention because of their low emission of CO2. ...

Z. ?ahin; O. Durgun

2009-02-10T23:59:59.000Z

406

Thermodynamic Performances and Cost Analysis of Advanced Biomass Combustion Power Plants  

Science Journals Connector (OSTI)

In this paper, plant configurations with different options for drying the biomass before combustion have been discussed. Conventional indirect processes,...

Roberto Carapellucci

2002-01-01T23:59:59.000Z

407

Combustion Characteristics, Emissions and Heat Release Rate Analysis of a Homogeneous Charge Compression Ignition Engine with Exhaust Gas Recirculation Fuelled with Diesel  

Science Journals Connector (OSTI)

The EGR, a very well-known method for NOx reduction in diesel engines, is also a method in HCCI combustion mode, when fuelled with commercial fuel, to improve engine power, mainly because of the increase of the ignition delay. ... Heywood, J. B. “Internal Combustion Engine Fundamentals”, Ed. McGraw-Hill Book Company, Singapur (Singapur), 1988. ... (Mechanical Engineering Laboratory MITI) “Chemical Kinetic Study of a Cetane Number Enhancing Additive for an LGP DI Diesel Engine,” ...

Miguel Torres García; Francisco J. Jiménez-Espadafor Aguilar; Tomás Sánchez Lencero

2009-04-02T23:59:59.000Z

408

The use of auxiliary ignition devices to improve combustion of low centane-high volatility fuels in a diesel engine  

SciTech Connect (OSTI)

The use of auxiliary ignition devices to improve the combustion of low cetane-high volatility fuels in a Diesel engine is described. Previous combustion with a low cetane-high volatility fuel (with a spark plug located at the periphery of the cylinder) resulted in engine knock at heavy loads and poor engine operation at light loads. In the present investigation, several new ignition devices were used to ignite the fuel in the center of the cylinder, to allow combustion to be controlled by rate of injection. The devices used were an extended spark electrode, a fuel spray deflector, a nozzle glow ring, and a nozzle fuel cage. High speed photography and heat release were used to characterize the ignition and combustion process of the low cetane fuel in conjunction with the ignition devices. Combustion with all of the ignition devices was initiated in the center of the cylinder, significantly reducing engine knock. The use of the auxiliary ignition devices to ignite the fuel in the center of the chamber demonstrated extended operation of the Diesel engine for all of the devices tested.

Stroia, B.L.; Abata. D.L.

1988-01-01T23:59:59.000Z

409

Upgrading of low-rank coals for conventional and advanced combustion systems  

SciTech Connect (OSTI)

Low-rank coals, subbituminous, lignitic, and brown coals, have a ubiquitous presence in the world, being found in all continents. Close to half of the world`s estimated coal resources are low- rank coals. Many countries have no alternative economic source of energy. In the lower 48 states of the United States, there are 220 billion tons of economically recoverable reserves of lignite and subbituminous coal. Add to this quantity 5 trillion tons of predominantly subbituminous coal in Alaska, and the combined amount represents the largest supply of the lowest-cost fuels available for generating electric power in the United States. However, to use these coals cost-effectively and in an environmentally acceptable way, it is imperative that their properties and combustion/gasification behavior be well understood. The Energy and Environmental Research Center (EERC) takes a cradle-to-grave approach (i.e., mining, precleaning, combustion/gasification, postcleaning, and reuse and disposal of residues) for all aspects of coal processing and utilization. The environmental impact of these activities must be matched with the appropriate technologies. Experience over many years has shown that variations in coal and ash properties have a critical impact on design, reliability and efficiency of operation, and environmental compliance when low-rank coals are burned in conventional systems. This chapter reviews the significant technical issues of beneficiation, which includes reduction in moisture as well as ash (including sulfur), in relation to low-rank coal properties and their impact on conventional and advanced power systems. Finally, the development and utilization of low-rank coal resources are briefly discussed in view of policy, economic, and strategic issues.

Young, B.C.; Musich, M.A.; Jones, M.L.

1993-12-31T23:59:59.000Z

410

Optimization of combustion bowl geometry for the operation of kapok biodiesel – Diesel blends in a stationary diesel engine  

Science Journals Connector (OSTI)

Abstract The purpose of this research work is to optimize the combustion bowl geometry of a single cylinder stationary diesel engine for the effective operation of KME (kapok methyl ester) – diesel blends. Considering that the reported design modification would render the benefit of adaptation of higher blends of KME, in this study, two different combustion chamber geometries such as TRCC (trapezoidal combustion chamber) and TCC (toroidal combustion chamber) were chosen in addition to the convention design of HCC (hemispherical combustion chamber). In the experimental investigation, suitable blends such as B25 (25% KME + 75% diesel), B50 (50% KME + 50% diesel), B75 (75% KME + 25% diesel) and B100 (100% KME) were tested in a diesel engine with various combustion chamber geometries as mentioned above. Based on the results obtained from this study, TCC was shown to exhibit better performance and emission than TRCC and HCC for all test blends. Further, when compared to diesel, B25 and B50 were found to be the optimum blends with HCC and TCC, respectively, while TRCC seldom evinced better engine characteristics for any of the blends. Categorically, B50 showed a 5.2% increase in BTE (brake thermal efficiency) than diesel with TCC, whereas emissions such as CO (carbon monoxide) and smoke were reduced by 15.7% and 7.8%, respectively, with a comparable NOX (nitrogen oxides) emission with diesel. Similarly, combustion for B50 with TCC was found to be better than diesel, manifesting an increase in maximum heat release rate that that of diesel. Conclusively, from the experimental study, TCC was recognized as an ideal choice of combustion chamber design for the operation of blends up to B50 in a diesel engine.

S. Vedharaj; R. Vallinayagam; W.M. Yang; C.G. Saravanan; P.S. Lee

2015-01-01T23:59:59.000Z

411

Low-rank coal research: Volume 3, Combustion research: Final report. [Great Plains  

SciTech Connect (OSTI)

Volume III, Combustion Research, contains articles on fluidized bed combustion, advanced processes for low-rank coal slurry production, low-rank coal slurry combustion, heat engine utilization of low-rank coals, and Great Plains Gasification Plant. These articles have been entered individually into EDB and ERA. (LTN)

Mann, M. D.; Hajicek, D. R.; Zobeck, B. J.; Kalmanovitch, D. P.; Potas, T. A.; Maas, D. J.; Malterer, T. J.; DeWall, R. A.; Miller, B. G.; Johnson, M. D.

1987-04-01T23:59:59.000Z

412

Numerical and Experimental Analysis of Combustion and Exhaust Emissions in a Dual-Fuel Diesel/Natural Gas Engine  

Science Journals Connector (OSTI)

Department of Mechanical Engineering, UTV, University of Rome Tor Vergata, Rome, Italy, and IM-CNR, Istituto Motori of Italian National Research Council, Naples, Italy ... Accordingly, the use of NG as primary fuel allows the same compression ratio of the conventional diesel engine; thus, existing diesel engines can be easily converted to dual-fuel operation. ... Thus, a more general combustion model (G-equation or EDC) could be considered to represent flame propagation. ...

Stefano Cordiner; Michele Gambino; Sabato Iannaccone; Vittorio Rocco; Riccardo Scarcelli

2008-02-21T23:59:59.000Z

413

Achieve Continuous Injection of Solid Fuels into Advanced Combustion System Pressures  

SciTech Connect (OSTI)

The overall objective of this project is the development of a mechanical rotary-disk feeder, known as the Stamet Posimetric High Pressure Solids Feeder System, to feed dry granular coal continuously and controllably into pressurized environments of up to 35 kg/cm{sup 2} (500 psi). This was to be accomplished in two phases. The first task was to review materials handling experience in pressurized operations as it related to the target pressures for this project, and review existing coal preparation processes and specifications currently used in advanced combustion systems. Samples of existing fuel materials were obtained and tested to evaluate flow, sealing and friction properties. This provided input data for use in the design of the Stamet Feeders for the project, and ensured that the material specification used met the requirements of advanced combustion & gasification systems. Ultimately, Powder River Basin coal provided by the PSDF facility in Wilsonville, AL was used as the basis for the feeder design and test program. Based on the material property information, a Phase 1 feeder system was designed and built to accomplish feeding the coal to an intermediate pressure up to 21 kg/cm{sup 2} (300 psi) at feed rates of approximately 100 kilograms (220lbs) per hour. The pump & motor system was installed in a custom built test rig comprising an inlet vessel containing an active live-wall hopper mounted in a support frame, transition into the pump inlet, transition from pump outlet and a receiver vessel containing a receiver drum supported on weigh cells. All pressure containment on the rig was rated for the final pressure requirement of 35 kg/cm{sup 2} (500psi). A program of testing and modification was carried out in Stamet's facility in CA, culminating in successful feeding of coal into the Phase 1 target of 21 kg/cm{sup 2} (300psi) gas pressure in December 2003. Further testing was carried out at CQ Inc's facility in PA, providing longer run times and experience of handling and feeding the coal in winter conditions. Based on the data developed through the testing of the Phase I unit, a Phase II system was designed for feeding coal into pressures of up to 35 kg/cm{sup 2} (500 psi). A further program of testing and modification was then carried out in Stamet's facility, with the target pressure being achieved in January 2005. Repeated runs at pressure were achieved, and optimization of the machine resulted in power reductions of 60% from the first successful pressure runs. General design layout of a commercial-scale unit was conducted, and preliminary cost estimates for a commercial unit obtained.

Derek L. Aldred; Timothy Saunders

2005-07-01T23:59:59.000Z

414

Exhaust emissions estimation during transient turbocharged diesel engine operation using a two-zone combustion model  

Science Journals Connector (OSTI)

A comprehensive, two-zone, transient, diesel combustion model is used to study the performance and exhaust emissions of a turbocharged diesel engine during load transients. Analytical modelling of fuel spray and in-cylinder processes is included, while detailed equations concerning all engine sub-systems describe the phenomena, which diversify transient operation from the steady-state. Demonstrative diagrams are provided for the time histories of nitric oxide (NO) and soot emissions during transient operation, and the main factors affecting their formation are highlighted. Moreover, in-cylinder development of NO concentration and soot density during individual transient cycles is provided and compared with their respective steady-state counterparts. This comparison points out the differences between steady-state and transient operation, as regards exhaust emissions development. The study is expanded with the investigation of load change magnitude and cylinder wall insulation effects on transient emissions.

C.D. Rakopoulos; A.M. Dimaratos; E.G. Giakoumis; D.C. Rakopoulos

2009-01-01T23:59:59.000Z

415

Experimental study on combustion and emissions performance of a hybrid syngas–gasoline engine  

Science Journals Connector (OSTI)

The effect of syngas addition on the performance of a 1.6 L gasoline engine at lean condition was investigated in the paper. The syngas which produced by the onboard ethanol catalytic decomposition was mainly composed of hydrogen and carbon monoxide. A tube array reforming reactor was mounted on the engine tailpipe to produce syngas. During the test, the engine was run at 1800 rpm and a manifolds absolute pressure of 61.5 kPa. The spark timing for the maximum brake torque was adopted for all tests. The engine spark timing, injection timing and duration of the gasoline were controlled by a hybrid electronic control unit communicated with the engine original electronic control unit. The syngas volume fraction in the total intake gas was gradually increased from 0% to 1.84%. The gasoline flow rate was decreased to ensure that the global excess air ratio of the fuel–air mixture in cylinder at about 1.20. The test results confirmed that the syngas addition helped improve the indicated thermal efficiency and shorten the combustion duration. HC, \\{NOx\\} emissions and particle total number per cubic centimeter were reduced after the syngas addition at lean condition.

Changwei Ji; Xiaoxu Dai; Shuofeng Wang; Chen Liang; Bingjie Ju; Xiaolong Liu

2013-01-01T23:59:59.000Z

416

Experimental Investigation of Fuel-Reactivity Controlled Compression Ignition (RCCI) Combustion Mode in a Multi-Cylinder, Light-Duty Diesel Engine  

SciTech Connect (OSTI)

An experimental study was performed to provide the combustion and emission characteristics resulting from fuel-reactivity controlled compression ignition (RCCI) combustion mode utilizing dual-fuel approach in a light-duty, multi-cylinder diesel engine. In-cylinder fuel blending using port fuel injection of gasoline before intake valve opening (IVO) and early-cycle, direct injection of diesel fuel was used as the charge preparation and fuel blending strategy. In order to achieve the desired auto-ignition quality through the stratification of the fuel-air equivalence ratio ( ), blends of commercially available gasoline and diesel fuel were used. Engine experiments were performed at an engine speed of 2300rpm and an engine load of 4.3bar brake mean effective pressure (BMEP). It was found that significant reduction in both nitrogen oxide (NOx) and particulate matter (PM) was realized successfully through the RCCI combustion mode even without applying exhaust gas recirculation (EGR). However, high carbon monoxide (CO) and hydrocarbon (HC) emissions were observed. The low combustion gas temperature during the expansion and exhaust processes seemed to be the dominant source of high CO emissions in the RCCI combustion mode. The high HC emissions during the RCCI combustion mode could be due to the increased combustion quenching layer thickness as well as the -stratification at the periphery of the combustion chamber. The slightly higher brake thermal efficiency (BTE) of the RCCI combustion mode was observed than the other combustion modes, such as the conventional diesel combustion (CDC) mode, and single-fuel, premixed charge compression ignition (PCCI) combustion mode. The parametric study of the RCCI combustion mode revealed that the combustion phasing and/or the peak cylinder pressure rise rate of the RCCI combustion mode could be controlled by several physical parameters premixed ratio (rp), intake swirl intensity, and start of injection (SOI) timing of directly injected fuel unlike other low temperature combustion (LTC) strategies.

Cho, Kukwon [ORNL] [ORNL; Curran, Scott [ORNL] [ORNL; Prikhodko, Vitaly Y [ORNL] [ORNL; Sluder, Scott [ORNL] [ORNL; Parks, II, James E [ORNL; Wagner, Robert M [ORNL] [ORNL

2011-01-01T23:59:59.000Z

417

Combustion behavior of a spark ignition engine fueled with synthetic gases derived from biogas  

Science Journals Connector (OSTI)

Abstract Combustion results obtained from a spark ignition engine fueled with two synthetic gases obtained from catalytic decomposition of biogas are presented in this paper. These results are compared with those obtained when the engine was fueled with gasoline, methane and with the biogas from which synthetic gases are extracted. Experimental tests were performed under a wide range of speeds and at three equivalence ratios. Results showed that fractions of hydrogen in synthetic gases increased maximum pressures inside cylinder. Moreover, peak pressures were detected closer to top dead center than methane and biogas. Despite the fraction of diluents in the composition of synthetic gases, high speeds and lean conditions resulted in higher indicated efficiencies than those obtained with gasoline. Moreover, combustion speed and heat release rate were strongly influenced by the proportion of diluents and hydrogen in gaseous blends. CO and CO2 content in the composition of synthetic gases contributed to increase the exhaust concentrations of these pollutants compared with the other fuels, while HC decreased because of the small fraction of methane which remained unburned. Although \\{NOx\\} emissions were mitigated by diluents, like CO2 and air excess, high hydrogen fraction in composition of syngas involved elevated \\{NOx\\} emissions due to the increase in flame temperature that hydrogen produces.

J. Arroyo; F. Moreno; M. Muñoz; C. Monné; N. Bernal

2014-01-01T23:59:59.000Z

418

Impact of N2 dilution on combustion and emissions in a spark ignition CNG engine  

Science Journals Connector (OSTI)

Abstract In order to reduce \\{NOx\\} (nitrogen oxides) emissions, N2 (nitrogen) was introduced as dilution gas to dilute mixture with a specially-designed injection device. The impacts of varying N2 DR (dilution ratio) on the combustion and the exhaust emissions were investigated, including engine heat release rate, indicator diagram, NOx, CO (carbon monoxide), THC (total hydrocarbon) emissions and so on. For this study, a modified 6.6 L CNG (compressed natural gas) engine was tested and N2 was injected into the end of intake manifold by a specially-designed device. The results showed that N2 dilution has a significant influence on the combustion and the exhaust emissions. With the rise of N2 DR, the maximum of pressure in cylinder and the maximum of heat release rate exhibited decrease trends, the centre of heat release curve showed a moving backward tendency. Higher N2 DR exhibited lower \\{NOx\\} (17–81%) emissions, but higher emissions of THC (3–78%) and CO (1–28%). The change of BSFC (brake specific fuel consumption) can be ignored with N2 DR no more than 167%. Satisfactory results can be obtained, with lower \\{NOx\\} (31%) emissions, lower BSFC (0.5%), and relatively higher THC (6%) and CO (1%) emissions, when N2 DR is 67%.

Zhongshu Wang; Hongbin Zuo; Zhongchang Liu; Weifeng Li; Huili Dou

2014-01-01T23:59:59.000Z

419

E-Print Network 3.0 - advanced engineering preliminary Sample...  

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

preliminary Search Powered by Explorit Topic List Advanced Search Sample search results for: advanced engineering preliminary Page: << < 1 2 3 4 5 > >> 1 UNIVERSITY OF NEBRASKA...

420

Mixing and flame structures inferred from OH-PLIF for conventional and low-temperature diesel engine combustion  

SciTech Connect (OSTI)

The structure of first- and second-stage combustion is investigated in a heavy-duty, single-cylinder optical engine using chemiluminescence imaging, Mie-scatter imaging of liquid-fuel, and OH planar laser-induced fluorescence (OH-PLIF) along with calculations of fluorescence quenching. Three different diesel combustion modes are studied: conventional non-diluted high-temperature combustion (HTC) with either (1) short or (2) long ignition delay, and (3) highly diluted low-temperature combustion (LTC) with early fuel injection. For the short ignition delay HTC condition, the OH fluorescence images show that second-stage combustion occurs mainly on the fuel jet periphery in a thickness of about 1 mm. For the long ignition delay HTC condition, the second-stage combustion zone on the jet periphery is thicker (5-6 mm). For the early-injection LTC condition, the second-stage combustion is even thicker (20-25 mm) and occurs only in the down-stream regions of the jet. The relationship between OH concentration and OH-PLIF intensity over a range of equivalence ratios is estimated from quenching calculations using collider species concentrations predicted by chemical kinetics simulations of combustion. The calculations show that both OH concentration and OH-PLIF intensity peak near stoichiometric mixtures and fall by an order of magnitude or more for equivalence ratios less than 0.2-0.4 and greater than 1.4-1.6. Using the OH fluorescence quenching predictions together with OH-PLIF images, quantitative boundaries for mixing are established for the three engine combustion modes. (author)

Singh, Satbir [General Motors Research and Development, Warren, MI 48090 (United States); Musculus, Mark P.B. [Sandia National Laboratories, Livermore, CA 94551 (United States); Reitz, Rolf D. [Department of Mechanical Engineering, University of Wisconsin, Madison, WI 53706 (United States)

2009-10-15T23:59:59.000Z

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


421

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

Science Journals Connector (OSTI)

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

Ales Hribernik; Breda Kegl

2007-05-01T23:59:59.000Z

422

Assessment of Combustion and Turbulence Models for the Simulation...  

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

Combustion and Turbulence Models for the Simulation of Combustion Processes in a DI Diesel Engine Assessment of Combustion and Turbulence Models for the Simulation of Combustion...

423

RD&D Study Plan for Advancement of Science and Engineering Supporting...  

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

of Science and Engineering Supporting Geologic Disposal in Bedded Salt- March 2013 Workshop Outcomes RD&D Study Plan for Advancement of Science and Engineering Supporting...

424

Comparative Study of Performance and Combustion Characteristics of Conventional and Low Heat Rejection (Mullite Coated) Diesel Engines  

Science Journals Connector (OSTI)

Tests were performed on a single cylinder, four stroke, direct injection, diesel engine whose piston crown, cylinder head and valves were coated with a 0.5 mm thickness of 3Al2O32SiO2 (mullite) (Al2O3 = 60%, SiO2 = 40%) over a 150 ?m thickness of NiCrAlY bond coat. The working conditions for the conventional engine (without coating) and LHR (mullite coated) engine were kept exactly same to ensure a comparison between the two configurations of the engine. This paper is intended to emphasis on performance and combustion characteristics of conventional and LHR (Mullite coated) diesel engines under identical conditions. Tests were carried out at same operational constraints i.e. air-fuel ratio and engine speed conditions for both conventional engine (without coating) and LHR (mullite coated) engines. The results showed that, there was as much as 1.8 % increasing on brake power for LHR (mullite coated) engine compared to conventional engine (without coating) at full load The average decrease in brake specific fuel consumption in the LHR engine compared with the conventional engine was 1.76 % for full engine load. However, there was increasing on cylinder gas pressure and net heat release rate for LHR engine compared to conventional engine. Also the results revealed that, there was as much as 22% increasing on exhaust gas temperature for LHR engine compared to conventional engine at full engine load.

S B Patond; S A Chaple; P N Shrirao; P I Shaikh

2013-01-01T23:59:59.000Z

425

Combustion and Emission Characteristics of a Direct-Injection Diesel Engine Fueled with Diesel?Diethyl Adipate Blends  

Science Journals Connector (OSTI)

The advantage of a diesel engine compared with a gasoline engine is the fuel economy benefits; however, the high NOx and smoke emissions still remain the main obstacles for the increasing application of diesel engines with the increasing concerns for environmental protection and implementation of more stringent exhaust gas regulations, thus further reduction in engine emissions becomes one of major tasks in engine development. ... In the application of pure oxygenated fuels, Fleisch et al.,1 Kapus et al.,2 and Sorenson et al.3 have studied dimethyl ether (DME) in the modified diesel engine, and their results showed that the engine could achieve ultralow emission prospects without fundamental change in combustion systems. ... Murayama, T.; Zheng, M.; Chikahisa, T. Simultaneous reduction of smoke and NOx from a DI diesel engine with EGR and dimethyl carbonate; SAE paper 952518, Society of Automotive Engineers:? Warrendale, PA, 1995. ...

Yi Ren; Zuohua Huang; Haiyan Miao; Deming Jiang; Ke Zeng; Bing Liu; Xibin Wang

2007-04-19T23:59:59.000Z

426

Advanced Technologies in Life Cycle Engineering  

Science Journals Connector (OSTI)

Abstract Increasing competitive pressure within industries producing long-living, cost intensive products drive the need to optimize product life cycles in terms of faster time to market, sustainable operation, reengineering and recycling. In this context, complexity of IT systems is growing and has to connect different life cycle phases. Especially new concepts of Product Service Systems (PSS) lead to a connection between product design, maintenance, repair and overhaul (MRO). There are still many challenges concerning interface problems between different IT-Systems. They are caused by different data formats, continuous demand for information or integration of new technologies. Thus, Life Cycle Engineering (LCE) has gained an important role and needs to consider integration of new industry 4.0 solutions like cloud services, big data or cyber physical systems. This paper gives an overview about these challenges, future development and new research approaches. A deeper view is taken at one promising approach in the field of maintenance of Printed Circuit Boards (PCB). This approach is about invention and implementation of a new process that combines both electrical and optical measuring techniques to automate circuit and layout plan reconstruction of long-living and cost intensive electronic boards.

Rainer Stark; Hendrik Grosser; Boris Beckmann-Dobrev; Simon Kind

2014-01-01T23:59:59.000Z

427

Task 2 Materials for Advanced Boiler and Oxy-combustion Systems (NETL-US)  

SciTech Connect (OSTI)

Exposures were completed to ~1400 hr. Analysis of kinetics are close to completion. No oxy-combustion gas phase effects were found at 700{degrees}C.

Holcomb, Gordon R. [NETL; Tylczak, Joseph [NETL

2013-08-28T23:59:59.000Z

428

E-Print Network 3.0 - advanced pressurised combustion Sample...  

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

as well as gasification the F, Cl and Br 12;Zevenhoven & Kilpinen Halogens, dioxinsfurans 17... , Liang et al., 1991), mainly studying fluidised bed combustion, that...

429

Variable oxygen/nitrogen enriched intake air system for internal combustion engine applications  

DOE Patents [OSTI]

An air supply control system for selectively supplying ambient air, oxygen enriched air and nitrogen enriched air to an intake of an internal combustion engine includes an air mixing chamber that is in fluid communication with the air intake. At least a portion of the ambient air flowing to the mixing chamber is selectively diverted through a secondary path that includes a selectively permeable air separating membrane device due a differential pressure established across the air separating membrane. The permeable membrane device separates a portion of the nitrogen in the ambient air so that oxygen enriched air (permeate) and nitrogen enriched air (retentate) are produced. The oxygen enriched air and the nitrogen enriched air can be selectively supplied to the mixing chamber or expelled to atmosphere. Alternatively, a portion of the nitrogen enriched air can be supplied through another control valve to a monatomic-nitrogen plasma generator device so that atomic nitrogen produced from the nitrogen enriched air can be then injected into the exhaust of the engine. The oxygen enriched air or the nitrogen enriched air becomes mixed with the ambient air in the mixing chamber and then the mixed air is supplied to the intake of the engine. As a result, the air being supplied to the intake of the engine can be regulated with respect to the concentration of oxygen and/or nitrogen.

Poola, Ramesh B. (Woodridge, IL); Sekar, Ramanujam R. (Naperville, IL); Cole, Roger L. (Elmhurst, IL)

1997-01-01T23:59:59.000Z

430

Diagnosis of a turbocharging system of 1 MW internal combustion engine  

Science Journals Connector (OSTI)

A diagnostic procedure is presented purposely for the turbocharging system of 1 MW internal combustion engine (I.C.E.) and specifically, for the filters and compressor modules. This study is part of a wider research activity, concerning the development of a diagnosis system dedicated to the cogenerative I.C.E. installed at the Engineering Faculty in Perugia. Firstly a 1-D thermodynamic model of the CHP engine working fluid was developed to simulate failure conditions of the turbocharging groups, which are not directly replicable on the I.C.E. to avoid plant stoppage. This model is able to simulate the degradation in performance of the engine components. It also takes into account the effect of compensation which the regulation system activates in case of efficiency loss or failure relative to filters or compressors. In order to identify and assess such failures, the fuzzy logic was chosen as the tool for the diagnosis system design. The developed diagnosis system displayed a good reliability degree with the 1-D thermodynamic model results, for operating conditions in correspondence of bad performance either on behalf of the filters or the compressor. Moreover, the procedure can be implemented in the plant monitoring system and provides in real-time diagnosis results about the status of the components and the need of maintenance, on the basis of few parameters already measured on the I.C.E.

L. Barelli; G. Bidini; F. Bonucci

2013-01-01T23:59:59.000Z

431

Boosted HCCI for High Power without Engine Knock, and with Ultra-Low NOX Emissions  

Broader source: Energy.gov [DOE]

Advanced engines using HCCI or HCCI-like combustion can provide both high efficiencies and very low emissions of NOX and PM

432

Characterization of Pre-Commercial Gasoline Engine Particulates Through Advanced Aerosol Methods  

Broader source: Energy.gov [DOE]

Advanced aerosol analysis methods were used to examine particulates from single cylinder test engines running on gasoline and ethanol blends.

433

Piston Bowl Optimization for RCCI Combustion in a Light-Duty Multi-Cylinder Engine  

SciTech Connect (OSTI)

Reactivity Controlled Compression Ignition (RCCI) is an engine combustion strategy that that produces low NO{sub x} and PM emissions with high thermal efficiency. Previous RCCI research has been investigated in single-cylinder heavy-duty engines. The current study investigates RCCI operation in a light-duty multi-cylinder engine at 3 operating points. These operating points were chosen to cover a range of conditions seen in the US EPA light-duty FTP test. The operating points were chosen by the Ad Hoc working group to simulate operation in the FTP test. The fueling strategy for the engine experiments consisted of in-cylinder fuel blending using port fuel-injection (PFI) of gasoline and early-cycle, direct-injection (DI) of diesel fuel. At these 3 points, the stock engine configuration is compared to operation with both the original equipment manufacturer (OEM) and custom machined pistons designed for RCCI operation. The pistons were designed with assistance from the KIVA 3V computational fluid dynamics (CFD) code. By using a genetic algorithm optimization, in conjunction with KIVA, the piston bowl profile was optimized for dedicated RCCI operation to reduce unburned fuel emissions and piston bowl surface area. By reducing these parameters, the thermal efficiency of the engine was improved while maintaining low NOx and PM emissions. Results show that with the new piston bowl profile and an optimized injection schedule, RCCI brake thermal efficiency was increased from 37%, with the stock EURO IV configuration, to 40% at the 2,600 rev/min, 6.9 bar BMEP condition, and NOx and PM emissions targets were met without the need for exhaust after-treatment.

Hanson, Reed M [ORNL; Curran, Scott [ORNL; Wagner, Robert M [ORNL; Reitz, Rolf [University of Wisconsin; Kokjohn, Sage [University of Wisconsin, Madison

2012-01-01T23:59:59.000Z

434

Proposed Research Center Biomedical Engineering for Advanced Technologies in Ophthalmology (BEATO)  

E-Print Network [OSTI]

Proposed Research Center Biomedical Engineering for Advanced Technologies in Ophthalmology (BEATO of a Research Center in Biomedical Engineering for Advanced Technologies in Ophthalmology (BEATO) administered with the Department of Ophthalmology. The BEATO Center will focus on advanced technology and biomedical engineering

Rose, Michael R.

435

Graduate School of Advanced Science and Engineering Department of Chemistry and Biochemistry  

E-Print Network [OSTI]

Graduate School of Advanced Science and Engineering Department of Chemistry and Biochemistry; Graduate School of Advanced Science and Engineering Department of Chemistry and Biochemistry Master/092015/04 2 Department of Chemistry and Biochemistry #12; Graduate School of Advanced Science and Engineering

Kaji, Hajime

436

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

Science Journals Connector (OSTI)

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

Priyabrata Pradhan; Hifjur Raheman; Debasish Padhee

2014-01-01T23:59:59.000Z

437

Low Temperature Combustion with Thermo-Chemical Recuperation to Maximize In-Use Engine Efficiency  

SciTech Connect (OSTI)

The key to overcome Low Temperature Combustion (LTC) load range limitations in reciprocating engines is based on proper control over the thermo-chemical properties of the in-cylinder charge. The studied alternative to achieve the required control of LTC is the use of two separate fuel streams to regulate timing and heat release at specific operational points, where the secondary fuel is a reformed product of the primary fuel in the tank. It is proposed in this report that the secondary fuel can be produced using exhaust heat and Thermo-Chemical Recuperation (TCR). TCR for reciprocating engines is a system that employs high efficiency recovery of sensible heat from engine exhaust gas and uses this energy to transform fuel composition. The recuperated sensible heat is returned to the engine as chemical energy. Chemical conversions are accomplished through catalytic and endothermic reactions in a specially designed reforming reactor. An equilibrium model developed by Gas Technology Institute (GTI) for heptane steam reforming was applied to estimate reformed fuel composition at different reforming temperatures. Laboratory results, at a steam/heptane mole ratio less than 2:1, confirm that low temperature reforming reactions, in the range of 550 K to 650 K, can produce 10-30% hydrogen (by volume, wet) in the product stream. Also, the effect of trading low mean effective pressure for displacement to achieve power output and energy efficiency has been explored by WVU. A zerodimensional model of LTC using heptane as fuel and a diesel Compression Ignition (CI) combustion model were employed to estimate pressure, temperature and total heat release as inputs for a mechanical and thermal loss model. The model results show that the total cooling burden on an LTC engine with lower power density and higher displacement was 14.3% lower than the diesel engine for the same amount of energy addition in the case of high load (43.57mg fuel/cycle). These preliminary modeling and experimental results suggest that the LTC-TCR combination may offer a high efficiency solution to engine operation. A single zone model using a detailed chemical kinetic mechanism was implemented in CHEMKIN and to study the effects of base fuel and steam-fuel reforming products on the ignition timing and heat release characteristics. The study was performed considering the reformed fuel species composition for total n-heptane conversion (ideal case) and also at the composition corresponding to a specific set of operational reforming temperatures (real case). The computational model confirmed that the reformed products have a strong influence on the low temperature heat release (LTHR) region, affecting the onset of the high temperature heat release (HTHR). The ignition timing was proportionally delayed with respect to the baseline fuel case when higher concentrations of reformed gas were used. For stoichiometric concentration of RG, it was found that by increasing the proportion of reformed fuel to total fuel (RG), from 0% to 30%, the amount of energy released during the LTHR regime, or HR{sub L}, was reduced by 48% and the ignition timing was delayed 10.4 CA degrees with respect to the baseline fuel case. For RG composition corresponding to certain operational reforming temperatures, it was found that the most significant effects on the HCCI combustion, regarding HR{sub L} reduction and CA50 delay, was obtained by RG produced at a reforming temperature range of 675 K-725 K.

Nigel N. Clark; Francisco Posada; Clinton Bedick; John Pratapas; Aleksandr Kozlov; Martin Linck; Dmitri Boulanov

2009-03-30T23:59:59.000Z

438

CONFIRMATORY SURVEY RESULTS FOR PORTIONS OF THE ABB COMBUSTION ENGINEERING SITE IN WINDSOR, CONNECTICUT DURING THE FALL OF 2011  

SciTech Connect (OSTI)

From the mid-1950s until mid-2000, the Combustion Engineering, Inc. (CE) site in Windsor, Connecticut (Figure A-1) was involved in the research, development, engineering, production, and servicing of nuclear fuels, systems, and services. The site is currently undergoing decommissioning that will lead to license termination and unrestricted release in accordance with the requirements of the License Termination Rule in 10 CFR Part 20, Subpart E. Asea Brown Boveri Incorporated (ABB) has been decommissioning the CE site since 2001.

Wade C. Adams

2011-12-09T23:59:59.000Z

439

Electric Vehicles Since the invention of the internal combustion engine in 1807 petrol and diesel vehicles have become a  

E-Print Network [OSTI]

Electric Vehicles Since the invention of the internal combustion engine in 1807 petrol and diesel and adopted. Electric vehicles (EVs) in particular are leading the charge, with car manufacturers stepping up these vehicles; the current market for electric vehicles; the results from existing pilot project; as well

Hickman, Mark

440

Combustion of high-sulfur coal and anthracite wastes in a rotary kiln combustor with an advanced internal air distributor  

SciTech Connect (OSTI)

Fluid bed combustors have received extensive testing with both high-sulfur coal and anthracite wastes. Rotary kilns are effective and popular devices for waste combustion. The Angelo Rotary Furnace{trademark} has been developed to improve the operation of rotary pyrolyzer/combustor systems through enhanced air distribution, which in this process is defined as staged, swirled combustion air injection. Fourteen of these new furnaces have been installed worldwide. Two units in Thailand, designed for rice hull feed with occasional lignite feed, have been recently started up. An older unit in Pennsylvania is being upgraded with a new, more advanced air distribution system for a series of tests this fall in which inexpensive high-sulfur coal and anthracite wastes will be fired with limestone. The purposes of these tests are to determine the burning characteristics of these two fuels in this system, to discover the Ca/S ratios necessary for operation of a rotary kiln combusting these fuels, and to observe the gas-borne emissions from the furnace. An extensive preliminary design study will be performed on a commercial installation for combustion of anthracite wastes. 14 refs., 5 figs., 1 tab.

Cobb, J.T. Jr. (Pittsburgh Univ., PA (USA)); Ahn, Y.K. (Gilbert/Commonwealth, Inc., Reading, PA (USA)); Angelo, J.F. (Universal Energy International, Inc., Little Rock, AR (USA))

1990-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "advanced combustion engines" 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

APPENDIX B: CARBON DIOXIDE CAPTURE TECHNOLOGY SHEETS PRE-COMBUSTION SOLVENTS  

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

CARBON DIOXIDE CAPTURE TECHNOLOGY SHEETS PRE-COMBUSTION SOLVENTS PRE-COMBUSTION SORBENTS PRE-COMBUSTION MEMBRANES POST-COMBUSTION SOLVENTS POST-COMBUSTION SORBENTS POST-COMBUSTION MEMBRANES OXY-COMBUSTION OXYGEN PRODUCTION CHEMICAL LOOPING ADVANCED COMPRESSION R&D COLLABORATIONS B-1 APPENDIX B: CARBON DIOXIDE CAPTURE TECHNOLOGY SHEETS APPENDIX B: CARBON DIOXIDE CAPTURE TECHNOLOGY SHEETS NATIONAL ENERGY TECHNOLOGY LABORATORY PRE-COMBUSTION SOLVENTS B-6 SRI International - CO 2 Capture Using AC-ABC Processt B-7 PRE-COMBUSTION SORBENTS B-14 TDA Research - CO 2 Capture for Low-Rank Coal IGCC Systems B-15 URS Group - Sorbent Development for WGS B-18 Air Products and Chemicals - Advanced Acid Gas Separation B-24 Ohio State University-Department of Chemical Engineering - Calcium Looping for Hydrogen Production B-33

442

Alternative Fuel Pilot Plant & Hydrogen Internal Combustion Engine Vehicle Testing  

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

RESEARCH & DEVELOPMENT RESEARCH & DEVELOPMENT Science Arizona Public Service Alternative Fuel Pilot Plant & Hydrogen Internal Combustion Engine Vehicle Testing Alternative Fuel Pilot Plant The Arizona Public Service Alternative Fuel Pilot Plant is a model alternative fuel refueling system, dispensing hydrogen, compressed natural gas (CNG), and hydrogen/ CNG blends (HCNG). The plant is used daily to fuel vehicles operated in Arizona Public Service's fleet. Hydrogen Subsystem The plant's hydrogen system consists of production, compression, storage, and dispensing. The hydrogen produced is suitable for use in fuel cell-powered vehicles, for which the minimum hydrogen purity goal is 99.999%. Hydrogen is produced using an electrolysis process that separates water into hydrogen and oxygen. At present, the hydrogen is

443

Summary Report on the Transportation Combustion Engine Efficiency Colloquium Held at USCAR, March 3 and 4, 2010  

SciTech Connect (OSTI)

This report summarizes results from an invited two-day colloquium of twenty-nine combustion engine experts from academia, industry, and national labs that was convened March 3rd and 4th, 2010, at the headquarters of the United States Council for Automotive Research (USCAR) in Southfield, Michigan. The colloquium was held at the request of The Department of Energy (DOE) Office of Freedom Car and Vehicle Technologies (OFCVT) to review and assess the current state of transportation combustion engine technology from theoretical and practical perspectives. In the ensuing discussions, the experts were able to reach a broad consensus on some important questions regarding current fuel efficiency limits. They also identified technology barriers and recommended specific near and longer-term R&D priorities for DOE's consideration. Internal combustion engines currently play a dominant role in U.S. transportation and are expected to continue to do so well beyond 2020 [1]. Because of this, the Department of Energy (DOE) has placed high priority on promoting technologies that maximize combustion engine fuel efficiency while minimizing greenhouse gas emissions. Identification of the most promising paths to achieve these goals has recently become more complicated as non-traditional transportation fuels and hybrid electric vehicles become widely available. To reassess the state of combustion engine science and identify new opportunities for technology breakthroughs, an invited colloquium of combustion engine experts was convened on March 3rd and 4th, 2010, at the headquarters of the United States Council for Automotive Research (USCAR) in Southfield, Michigan. The colloquium objectives were: (1) Review and assess the current state of transportation combustion engine technology from both theoretical and practical perspectives; (2) Arrive at a consensus on the theoretical and practical fuel efficiencies that can be achieved; and (3) Recommend near and longer-term R&D priorities for DOE to consider in developing their strategic planning for reaching efficiency goals. This report summarizes the main discussion points and recommendations that emerged from the meeting. Included are areas where there is widespread consensus and areas where there are still important technical uncertainties and wide ranging opinions.

Daw, C Stuart [ORNL; Graves, Ronald L [ORNL; Caton, Jerald A [ORNL; Wagner, Robert M [ORNL

2010-11-01T23:59:59.000Z

444

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

Science Journals Connector (OSTI)

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

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

2014-01-01T23:59:59.000Z

445

E-Print Network 3.0 - advanced coal combustion Sample Search...  

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

TRACE ELEMENTS, ALKALI METALS 19.6.2001 8-1 Chapter 8 Trace elements, Summary: ,gasification, incineration etc. is illustrated by Figure 8.2 for a coal combustion process with...

446

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

Science Journals Connector (OSTI)

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

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

2014-01-01T23:59:59.000Z

447

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

Science Journals Connector (OSTI)

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

L. Goldsworthy

2012-01-01T23:59:59.000Z

448

A photographic study of the combustion of low cetane fuels in a Diesel engine aided with spark assist  

SciTech Connect (OSTI)

An experimental investigation of the ignition and combustion characteristics of two low cetane fuels in a spark assisted Diesel engine is described. A three cylinder Diesel engine was modified for single cylinder operation and fitted with a spark plug located in the periphery of the spray plume. Optical observations of ignition and combustion were obtained with high speed photography. Optical access was provided by a quartz piston crown and extended head arrangement. The low cetane fuels, a light end, low viscosity fuel and a heavy end, high viscosity fuel which were blended to bracket No. 2 Diesel fuel on the distillation curve, demonstrated extended operation in the modified Diesel engine. Qualitative and quantitative experimental observations of ignition delay, pressure rise, heat release, spray penetration and geometery were compared and evaluated against theoretical predictions. Results indicate that controlled combustion of extended fuel blends in a Diesel engine may be possible without inlet air preconditioning and that engine knock may be avoided when heat release is optimized with proper spark and injection timing.

Abata, D.L.; Fritz, S.G.; Stroia, B.J.

1986-01-01T23:59:59.000Z

449

Laser-induced ignition and combustion in a SI engine with direct injection  

Science Journals Connector (OSTI)

Laser-induced ignition has shown huge advantages for the combustion ... (KIT) to investigate the potential of the laser-induced ignition. The emphasis was on improving combustion initiation...

Dipl.-Ing. Volker Gross; Dr.-Ing. Heiko Kubach…

2010-07-01T23:59:59.000Z

450

Market and equipment performance analysis for the application of coal-based fuels/advanced combustion systems: Commercial and small industrial applications: Volume B, Appendices  

SciTech Connect (OSTI)

In March 1985, Burns and Roe Services Corporation (BRSC) under Contract No. AC22-84PC72571 with the US Department of Energy, Pittsburgh Energy Technology Center (DOE/PETC) initiated a task entitled ''Market and Equipment Performance Analysis for the Application of Coal-Based Fuels/Advanced Combustion Systems.'' This volume contains the following Appendices: Commercial sector applications of coal based fuels and advanced technologies, EOS Technologies, Inc.; Estimation of fuel use and population for industrial boilers <50 mm Btu/hr and direct fired combustors <100 mm Btu/hr firing oil and gas, PEI Associates; Characteristics of oil and gas fired boilers; Characteristics of oil and gas fired process heaters; Environmental permitting considerations; States air emission rules and regulations applying to commercial/industrial boilers and process heaters <100 mm Btu/hr heat input; Advanced coal combustion systems; Application of advanced coal combustion systems to watertube boilers; Application of advanced coal combustion systems to firetube boilers; and Application of advanced coal combustion systems to process heaters.

Not Available

1986-05-01T23:59:59.000Z

451

An investigation of diesel–ignited propane dual fuel combustion in a heavy-duty diesel engine  

Science Journals Connector (OSTI)

Abstract This paper presents a detailed experimental analysis of diesel–ignited propane dual fuel combustion on a 12.9-l, six-cylinder, production heavy-duty diesel engine. Gaseous propane was fumigated upstream of the turbocharger air inlet and ignited using direct injection of diesel sprays. Results are presented for brake mean effective pressures (BMEP) from 5 to 20 bar and different percent energy substituted (PES) by propane at a constant engine speed of 1500 rpm. The effect of propane PES on apparent heat release rates, combustion phasing and duration, fuel conversion and combustion efficiencies, and engine-out emissions of oxides of nitrogen (NOx), smoke, carbon monoxide (CO), and total unburned hydrocarbons (HC) were investigated. Exhaust particle number concentrations and size distributions were also quantified for diesel–ignited propane combustion. With stock engine parameters, the maximum propane PES was limited to 86%, 60%, 33%, and 25% at 5, 10, 15, and 20 bar BMEPs, respectively, either by high maximum pressure rise rates (MPRR) or by excessive HC and CO emissions. With increasing PES, while fuel conversion efficiencies increased slightly at high \\{BMEPs\\} or decreased at low BMEPs, combustion efficiencies uniformly decreased. Also, with increasing PES, \\{NOx\\} and smoke emissions were generally decreased but these reductions were accompanied by higher HC and CO emissions. Exhaust particle number concentrations decreased with increasing PES at low loads but showed the opposite trends at higher loads. At 10 bar BMEP, by adopting a different fueling strategy, the maximum possible propane PES was extended to 80%. Finally, a limited diesel injection timing study was performed to identify the optimal operating conditions for the best efficiency-emissions-MPRR tradeoffs.

Andrew C. Polk; Chad D. Carpenter; Kalyan Kumar Srinivasan; Sundar Rajan Krishnan

2014-01-01T23:59:59.000Z

452

Effects of Fuel Physical Properties on Diesel Engine Combustion Using Diesel and Bio-Diesel Fuels  

SciTech Connect (OSTI)

A computational study is performed to investigate the effects of physical property on diesel engine combustion characteristics using bio-diesel fuels. Properties of typical bio-diesel fuels that were either calculated or measured are used in the study and the simulation results are compared with those of conventional diesel fuels. Sensitivity of the computational results to individual physical properties is also investigated, and the results can provide information for desirable characteristics of the blended fuels. The properties considered in this study include liquid density, vapor pressure, surface tension, liquid viscosity, liquid thermal conductivity, liquid specific heat, latent heat, vapor specific heat, vapor diffusion coefficient, vapor viscosity and vapor thermal conductivity. The results show significant effects of the fuel physical properties on ignition delay and burning rates at various engine operating conditions. It is seen that there is no single physical property that dominates differences of ignition delay between diesel and bio-diesel fuels. However, among the 11 properties considered in the study, the simulation results were found to be most sensitive to the liquid fuel density, vapor pressure and surface tension through their effects on the mixture preparation processes.

Ra, Youngchul [ORNL; Reitz, Rolf [University of Wisconsin; McFarlane, Joanna [ORNL; Daw, C Stuart [ORNL

2007-01-01T23:59:59.000Z

453

Heat-pipe gas-combustion system endurance test for Stirling engine. Final report, May 1990-September 1990  

SciTech Connect (OSTI)

Stirling Thermal Motors, Inc., (STM) has been developing a general purpose Heat Pipe Gas Combustion System (HPGC) suitable for use with the STM4-120 Stirling engine. The HPGC consists of a parallel plate recuperative preheater, a finned heat pipe evaporator and a film cooled gas combustor. A principal component of the HPGC is the heat pipe evaporator which collects and distributes the liquid sodium over the heat transfer surfaces. The liquid sodium evaporates and flows to the condensers where it delivers its latent heat. The report presents test results of endurance tests run on a Gas-Fired Stirling Engine (GFSE). Tests on a dynamometer test stand yielded 67 hours of engine operation at power levels over 10 kW (13.5 hp) with 26 hours at power levels above 15 kW (20 hp). Total testing of the engine, including both motoring tests and engine operation, yielded 245 hours of engine run time.

Mahrle, P.

1990-12-01T23:59:59.000Z

454

Advanced Combustion/Modeling and Analysis Toward HCCI/PCCI in...  

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

in a 60% Efficient Free-Piston Engine Rotary Shaft Power Extraction From a Free-Piston Engine 50% thermo-mechanical efficiency utilizing a free-piston engine in Hybrid vehicles...

455

FBC (fluidized-bed combustors) engineering correlations for estimating the combustion efficiency of a range of fuels  

SciTech Connect (OSTI)

Simplified engineering correlations are presented for estimating the combustion efficiency of a wide range of fuel types in fluidized bed boilers. The correlations are presented in such a way that they can be applied to various boiler designs, including both bubbling and circulating beds. Major emphasis is placed on minimizing the boiler design and operating details required, thereby enhancing the usefulness of these methods as screening tools. The impact of fuel type is addressed by making use of the fuel characterization parameters measured by the Babcock and Wilcox Company for the Electric Power Research Institute. It is demonstrated that the methods described give combustion efficiency estimates that agree well with typical observations from some well-documented fluidized bed combustion test facilities. 16 refs., 9 figs., 1 tab.

Daw, C.S.; Chandran, R.R.; Duqum, J.N.; Perna, M.A.; Petrill, E.M.

1989-01-01T23:59:59.000Z

456

Experimental study on combustion characteristics of a spark-ignition engine fueled with natural gas–hydrogen blends combining with EGR  

Science Journals Connector (OSTI)

An experimental study on the effect of hydrogen fraction and EGR rate on the combustion characteristics of a spark-ignition engine fueled with natural gas–hydrogen blends was investigated. The results show that flame development duration, rapid combustion duration and total combustion duration are increased with the increase of EGR rate and decreased with the increase of hydrogen fraction in the blends. Hydrogen addition shows larger influence on flame development duration than that on rapid combustion duration. The coefficient of variation of the indicated mean effective pressure increases with the increase of EGR rate. And hydrogen addition into natural gas decreases the coefficient of variation of the indicated mean effective pressure, and this effectiveness becomes more obviously at high EGR rate. Engine fueled with natural gas–hydrogen blends combining with proper EGR rate can realize the stable low temperature combustion in gas engine.

Erjiang Hu; Zuohua Huang; Bing Liu; Jianjun Zheng; Xiaolei Gu

2009-01-01T23:59:59.000Z

457

Combustion and emission characteristics of a turbocharged diesel engine using high premixed ratio of methanol and diesel fuel  

Science Journals Connector (OSTI)

Abstract The combustion and emission characteristics of a dual fuel diesel engine with high premixed ratio of methanol (PRm) were investigated. Experiments were performed on a 6-cylinder turbocharged, inter-cooling diesel engine. Methanol was injected through the intake port and ignited by direct injected diesel in the cylinder, the maximum \\{PRm\\} was over 70%. The experimental results showed that with high PRm, the maximum in-cylinder pressure increased from medium to high engine load but varied little or even decreased at low engine speed and load. High \\{PRm\\} prolonged the ignition delay but shortened the combustion duration and decreased the in-cylinder gas temperature at ignition timing. Hydrocarbons (HC), carbon monoxide (CO), formaldehyde emissions and the proportion of nitrogen dioxide (NO2) in nitrogen oxides (NOX) increased significantly with the increase of \\{PRm\\} while NOX and dry soot emissions were significantly reduced, which meant the trade-off relationship between NOX and soot emissions disappeared. The increased HC, CO and formaldehyde emissions could be effectively reduced by diesel oxidation catalyst (DOC) when the exhaust gas temperature reached the light off temperature of the DOC. After DOC, the NO2 proportion in NOX was greatly reduced to less than that of baseline engine at methanol premixed mode but increased slightly at pure diesel mode. The maximum \\{PRm\\} was confined by in-cylinder pressure at high engine speed and load. But at low engine speed and load, it was confined by the high emissions of HC, CO and formaldehyde even after DOC.

Lijiang Wei; Chunde Yao; Quangang Wang; Wang Pan; Guopeng Han

2015-01-01T23:59:59.000Z

458

REVISED NOTICE OF PROPOSED AWARDS Advanced Natural Gas Engine Research and Development for Class 3  

E-Print Network [OSTI]

REVISED NOTICE OF PROPOSED AWARDS Advanced Natural Gas Engine Research and Development for Class 3 Notice (PON-12-504) entitled "Advanced Natural Gas Engine research and Development for Class 3 through of natural gas engine concepts for application in light heavy-duty vehicles (LHDV) and medium heavy duty

459

Advanced Industrial Archaeology: A new reverse-engineering process for contextualizing and  

E-Print Network [OSTI]

1 Advanced Industrial Archaeology: A new reverse-engineering process for contextualizing.bernard@irccyn.ec-nantes.fr, michel.cotte@univ-nantes.fr Abstract Since virtual engineering has been introduced inside industries. Keywords reverse-engineering, 3D digitalization, CAD, Advanced Industrial Archaeology, technical heritage 1

Paris-Sud XI, Université de

460

Exhaust Emissions and Combustion Characteristics of a Direct Injection (DI) Diesel Engine Fueled with Methanol?Diesel Fuel Blends at Different Injection Timings  

Science Journals Connector (OSTI)

Exhaust Emissions and Combustion Characteristics of a Direct Injection (DI) Diesel Engine Fueled with Methanol?Diesel Fuel Blends at Different Injection Timings ... Because of their fuel economy and high reliability, compression-ignition (CI) engines known as diesel engines have been penetrating a number of markets around the world. ...

Mustafa Canakci; Cenk Sayin; Metin Gumus

2008-09-27T23:59:59.000Z

Note: This page contains sample records for the topic "advanced combustion engines" 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

NREL: Vehicles and Fuels Research - Fuel Combustion Lab  

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

Fuel Combustion Lab Fuel Combustion Lab NREL's Fuel Combustion Laboratory focuses on characterizing fuels at the molecular level. This information can then be used to understand and predict the fuel's effect on engine performance and emissions. By understanding the effects of fuel chemistry on ignition we can develop fuels that enable more efficient engine designs, using both today's technology and future advanced combustion concepts. This lab supports the distributed Renewable Fuels and Lubricants (ReFUEL) Laboratory, and the Biofuels activity. Photo of assembled IQT. Ignition Quality Tester The central piece of equipment in the Fuel Combustion Laboratory is the Ignition Quality Tester (IQT(tm)). The IQT(tm) is a constant volume combustion vessel that is used to study ignition properties of liquid

462

Direct Visualization of Spray and Combustion Inside a DI-SI Engine and Its Implications to Flex-Fuel VVT Operations  

Broader source: Energy.gov [DOE]

Fuel, injection timing, and valve deactivation in a DI optical accessible engine with side-mounted, multi-hole injector are investigated using CFD and high-speed imaging of sprays and combustion.

463

Optical-Engine Study of a Low-Temperature Combustion Strategy Employing a Dual-Row, Narrow-Included-Angle Nozzle and Early, Direct Injection of Diesel Fuel  

Broader source: Energy.gov [DOE]

Insight into mechanisms causing observed sharp emissions increase with diesel fuel injection is gained through experiments in an optical engine employing a similar low-temperature combustion strategy of early, direct injection of diesel fuel.

464

LOW-ENGINE-FRICTION TECHNOLOGY FOR ADVANCED NATURAL-GAS RECIPROCATING ENGINES  

SciTech Connect (OSTI)

This program aims at improving the efficiency of advanced natural-gas reciprocating engines (ANGRE) by reducing piston/ring assembly friction without major adverse effects on engine performance, such as increased oil consumption and emissions. A detailed set of piston/ring dynamic and friction models have been developed and applied that illustrated the fundamental relationships between design parameters and friction losses. Various low-friction strategies and concepts have been explored, and engine experiments will validate these concepts. An iterative process of experimentation, simulation and analysis, will be followed with the goal of demonstrating a complete optimized low-friction engine system. As planned, MIT has developed guidelines for an initial set of low-friction piston-ring-pack designs. Current recommendations focus on subtle top-piston-ring and oil-control-ring characteristics. A full-scale Waukesha F18 engine has been installed at Colorado State University and testing of the baseline configuration is in progress. Components for the first design iteration are being procured. Subsequent work includes examining the friction and engine performance data and extending the analyses to other areas to evaluate opportunities for further friction improvement and the impact on oil consumption/emission and wear, towards demonstrating an optimized reduced-friction engine system.

Victor W. Wong; Tian Tian; Grant Smedley

2003-08-28T23:59:59.000Z

465

Advanced high temperature materials for the energy efficient automotive Stirling engine  

SciTech Connect (OSTI)

The Stirling engine is under investigation jointly by the Department of Energy and NASA Lewis as an alternative to the internal combustion engine for automotive applications. The Stirling engine is an external combustion engine that offers the advantage of high fuel economy, low emissions, low noise, and low vibrations compared to current internal combustion automotive engines. The most critical component from a materials viewpoint is the heater head consisting of the cylinders, heating tubes, and regenerator housing. Materials requirements for the heater head include compatibility with hydrogen, resistance to hydrogen permeation, high temperature oxidation/corrosion resistance and high temperature creep-rupture and fatigue properties. A continuing supporting materials research and technology program has identified the wrought alloys CG-27 and 12RN72 and the cast alloys XF-818 and NASAUT 4G-A1 as candidate replacements for the cobalt containing alloys used in current prototype engines. Based on the materials research program in support of the automotive Stirling engine it is concluded that manufacture of the engine is feasible from low cost iron-base alloys rather than the cobalt alloys used in prototype engines. This paper will present results of research that led to this conclusion.

Titran, R.H.; Stephens, J.R.

1984-01-01T23:59:59.000Z

466

NREL Showcases Hydrogen Internal Combustion Engine Bus, Helps DOE Set Standards for Outreach (Fact Sheet), Hydrogen and Fuel Cell Technical Highlights (HFCTH)  

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

557 * November 2010 557 * November 2010 NREL Showcases Hydrogen Internal Combustion Engine Bus, Helps DOE Set Standards for Outreach National Renewable Energy Laboratory (NREL) Teams: Hydrogen Education, Melanie Caton; Market Transformation, Michael Ulsh Accomplishment: NREL started using its Ford hydrogen-powered internal combustion engine (H 2 ICE) bus in May 2010 as the primary shuttle vehicle for VIP visitors, members of the media, and new employees. As the first national laboratory to receive such a bus, NREL

467

FY2002 Progress Report for Fuels for Advanced Compression Ignition Direct Injection (CIDI) Engines  

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

Fuels for Advanced Compression Fuels for Advanced Compression Ignition Direct Injection (CIDI) Engines Energy Efficiency and Renewable Energy Office of FreedomCAR and Vehicle Technologies Approved by Stephen Goguen November 2002 Fuels for Advanced CIDI Engines FY 2002 Progress Report iii CONTENTS CONTENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii INDEX OF PRIMARY CONTACTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v I. INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 II. FUEL/LUBRICANT EFFECTS TESTING ON ENGINE PERFORMANCE . . . . . . . . . 13 A. Oil Consumption Contribution to CIDI PM Emissions during Transient Operation . . . . . . . . . . . . . . . . . . . .13

468

Syngas Enhanced High Efficiency Low Temperature Combustion for Clean Diesel Engines  

Broader source: Energy.gov [DOE]

A significant potential exists for clean diesel combustion by recouping exhaust energy to generate syngas either with a dedicated reformer or in-cylinder fuel reforming.

469

Simulation of High Efficiency Clean Combustion Engines and Detailed Chemical Kinetic Mechanisms Development  

Broader source: Energy.gov [DOE]

Discusses ongoing work exploring fuel chemistry, analysis of and improving simulation methodologies for high efficiency clean combustion regimes, and computational performance

470

E-Print Network 3.0 - abb combustion engineering Sample Search...  

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

Research Institute Ministry of the Environment . Denmark Summary: combustion; waste incineration; dioxin abatement Layout: Ann-Katrine Holme Christoffersen ISBN: 978... and...

471

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

Science Journals Connector (OSTI)

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

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

2008-01-01T23:59:59.000Z

472

LOW-ENGINE-FRICTION TECHNOLOGY FOR ADVANCED NATURAL-GAS RECIPROCATING ENGINES  

SciTech Connect (OSTI)

This program aims at improving the efficiency of advanced natural-gas reciprocating engines (ANGRE) by reducing piston and piston ring assembly friction without major adverse effects on engine performance, such as increased oil consumption and wear. An iterative process of simulation, experimentation and analysis is being followed towards achieving the goal of demonstrating a complete optimized low-friction engine system. To date, a detailed set of piston and piston-ring dynamic and friction models have been developed and applied that illustrate the fundamental relationships between design parameters and friction losses. Low friction ring designs have already been recommended in a previous phase, with full-scale engine validation partially completed. Current accomplishments include the addition of several additional power cylinder design areas to the overall system analysis. These include analyses of lubricant and cylinder surface finish and a parametric study of piston design. The Waukesha engine was found to be already well optimized in the areas of lubricant, surface skewness and honing cross-hatch angle, where friction reductions of 12% for lubricant, and 5% for surface characteristics, are projected. For the piston, a friction reduction of up to 50% may be possible by controlling waviness alone, while additional friction reductions are expected when other parameters are optimized. A total power cylinder friction reduction of 30-50% is expected, translating to an engine efficiency increase of two percentage points from its current baseline towards the goal of 50% efficiency. Key elements of the continuing work include further analysis and optimization of the engine piston design, in-engine testing of recommended lubricant and surface designs, design iteration and optimization of previously recommended technologies, and full-engine testing of a complete, optimized, low-friction power cylinder system.

Victor Wong; Tian Tian; Luke Moughon; Rosalind Takata; Jeffrey Jocsak

2005-09-30T23:59:59.000Z

473

Advanced Manufacturing and Engineering Equipment at the University of Southern Indiana  

SciTech Connect (OSTI)

Department of Energy grant DE-SC0005231was awarded to the University of Southern Indiana for the purchase of Advanced Manufacturing and Engineering equipment.

Mitchell, Zane Windsor [University of Southern Indiana; Gordon, Scott Allen [University of Southern Indiana

2014-08-04T23:59:59.000Z

474

Fuels for Advanced CIDI Engines and Fuel Cells: 2000 Annual Progress Report  

Broader source: Energy.gov [DOE]

DOE's Office of Transportation Technologies Fiscal Year 2000 Annual Progress Report for the Fuels for Advanced CIDI Engines and Fuel Cells Program highlights progress achieved during FY 2000.

475

Examinee's Number Academic Year 2014 Schools of Fundamental/Creative/Advanced Science and Engineering  

E-Print Network [OSTI]

Examinee's Number Type of transfer Academic Year 2014 Schools of Fundamental/Creative/Advanced Science and Engineering Waseda University Application Form International Program Transfer School

Kaji, Hajime

476

A retrospective survey of the use of laboratory tests to simulate internal combustion engine materials tribology problems  

SciTech Connect (OSTI)

Progress in the Field of tribology strongly parallels, and has always been strongly driven by, developments and needs in transportation and related industries. Testing of candidate materials for internal combustion engine applications has historically taken several routes: (1) replacement of parts in actual engines subjected to daily use, (2) testing in special, instrumented test engines, (3) and simulative testing in laboratory tribometers using relatively simple specimens. The advantages and disadvantages of each approach are reviewed using historical examples. A four-decade, retrospective survey of the tribomaterials literature focused on the effectiveness of laboratory simulations for engine materials screening. Guidelines for designing and ducting successful tribology laboratory simulations will be discussed. These concepts were used to design a valve wear simulator at Oak Ridge National Laboratory.

Blau, P.J.

1992-12-31T23:59:59.000Z

477

ADVANCED VISUALIZATION OF ENGINE SIMULATION DATA USING TEXTURE SYNTHESIS AND TOPOLOGICAL ANALYSIS  

E-Print Network [OSTI]

Figure 1: Idealized in-cylinder flow through a diesel engine (left) and a gas engine (right). ADVANCED motion found inside diesel and gas engines, respectively. Texture-based flow visualization techniques use for the design of a diesel engine try to create an ideal pattern of motion, which can be described by a swirling

Chen, Guoning

478

Investigation of Heat Transfer and Combustion in the Advanced Fluidized Bed Combustor (FBC).  

SciTech Connect (OSTI)

This technical report summarizes the research conducted and progress achieved during the period from April 1, 1997 to June 30, 1997. The exploratory hot model was modified to explore the operational limits, fuel flexibility, and the role of heat transfer in combustion control. Eight air injection nozzles were newly designed to set different angles. Three runs of independently controllable water-cooling tubes were arranged to study the local heat transfer characteristics along the flow direction of the combustor height. The fuel nozzle was carefully designed to improve the fuel atomization quality. The igniter system was designed to safe and dependable ignition. According to the established safety and health guideline, the auxiliary subsystems are inspected carefully. All instruments are checked and calibrated for the system test. The combustion test result was analyzed to understand thermal performance and heat transfer characteristics. The flame enthalpy decreased along the combustor height. The heat is removed by the cooling water at different zones during the combustion test. The axial variation of heat transfer coefficient was predicted. The heat transfer coefficient is generally lower in the top area than in the bottom of the combustor.

Lee, S.W.

1997-07-01T23:59:59.000Z

479

Engines - Spark Ignition Engines  

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

Spark Ignition Engines Spark Ignition Engines Thomas Wallner and omni engine Thomas Wallner and the omnivorous engine Background Today the United States import more than 60% of its crude oil and petroleum products. Transportation accounts for a major portion of these imports. Research in this field is focused on reducing the dependency on foreign oil by increasing the engine efficiency on the one hand and blending gasoline with renewable domestic fuels, such as ethanol, on the other. Argonne's Research The main focus of research is on evaluation of advanced combustion concepts and effects of fuel properties on engine efficiency, performance and emissions. The platforms used are a single-cylinder research engine as well as an automotive-size four-cylinder engine with direct fuel injection.

480

The enhancement of the mixing and combustion processes in supersonic flow applied to scramjet engine  

SciTech Connect (OSTI)

The Reynolds averaged parabolized Navier-Stokes equations are employed for the numerical study of turbulent mixing and combustion of a supersonic hydrogen jet in a supersonic airflow. A one-equation differential turbulence model is utilized. The simplified flame sheet model is employed for the numerical simulation of the supersonic combustion. 24 refs.

Kopchenov, V.I.; Lomkov, K.E. (Tsentral'nyi NII Aviatsionnogo Motorostroeniia, Moscow (Russian Federation))

1992-07-01T23:59:59.000Z

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481

LOW-ENGINE-FRICTION TECHNOLOGY FOR ADVANCED NATURAL-GAS RECIPROCATING ENGINES  

SciTech Connect (OSTI)

This program aims at improving the efficiency of advanced natural-gas reciprocating engines (ANGRE) by reducing piston/ring assembly friction without major adverse effects on engine performance, such as increased oil consumption and emissions. An iterative process of simulation, experimentation and analysis, are being followed towards achieving the goal of demonstrating a complete optimized low-friction engine system. To date, a detailed set of piston/ring dynamic and friction models have been developed and applied that illustrated the fundamental relationships between design parameters and friction losses. Various low-friction strategies and ring-design concepts have been explored, and engine experiments have been done on a full-scale Waukesha VGF F18 in-line 6 cylinder power generation engine rated at 370 kW at 1800 rpm. Current accomplishments include designing and testing ring-packs using a subtle top-compression-ring profile (skewed barrel design), lowering the tension of the oil-control ring, employing a negative twist to the scraper ring to control oil consumption. Initial test data indicate that piston ring-pack friction was reduced by 35% by lowering the oil-control ring tension alone, which corresponds to a 1.5% improvement in fuel efficiency. Although small in magnitude, this improvement represents a first step towards anticipated aggregate improvements from other strategies. Other ring-pack design strategies to lower friction have been identified, including reduced axial distance between the top two rings, tilted top-ring groove. Some of these configurations have been tested and some await further evaluation. Colorado State University performed the tests and Waukesha Engine Dresser, Inc. provided technical support. Key elements of the continuing work include optimizing the engine piston design, application of surface and material developments in conjunction with improved lubricant properties, system modeling and analysis, and continued technology demonstration in an actual full-sized reciprocating natural-gas engine.

Victor W. Wong; Tian Tian; Grant Smedley; Jeffrey Jocsak

2004-09-30T23:59:59.000Z

482

Oxy-Combustion CO2 Control | netl.doe.gov  

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

Advanced Combustion Oxy-Combustion Chemical Looping Combustion Program Plan Project Portfolio Project Information POSTED January 27, 2015 - Funding Opportunity Announcement DE-FOA-...

483

E-Print Network 3.0 - advanced combustion concepts Sample Search...  

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

nature for decision rules extracted with a data... plant," in Proc. Inst. Elect. Eng. Seminar Advanced Sensors In- strumentation ... Source: Kusiak, Andrew - Department of...

484

Investigation on combustion characteristics of crude rice bran oil methyl ester blend as a heavy duty automotive engine fuel  

Science Journals Connector (OSTI)

In the present work, an attempt was made to test the suitability of crude rice bran oil methyl ester (CRBME) blend as a heavy duty automotive engine fuel. A four stroke, six cylinder direct injection 117.6 kW turbo-charged compression ignition (CI) engine was used for the work. The operation of the engine with CRBME blend showed that the peak pressure increased with lower maximum rate of pressure rise and maximum heat release rate with shorter delay period. Burning rate of the CRBME blend was slower and required a higher crank angle to complete the combustion cycle when compared to diesel. The brake thermal efficiency of the CRBME blend was lower than that of diesel at all speeds except at 2300rpm. As the measured combustion and performance parameters for CRBME blend differs only by a smaller magnitude when compared with diesel, this investigation ensures the suitability of the CRBME blend as fuel for heavy duty automotive engine without any design modifications [Received: August 12, 2010; Accepted: August 29, 2010

S. Saravanan; G. Nagarajan; S. Sampath

2011-01-01T23:59:59.000Z

485

Fuel Modification t Facilitate Future Combustion Regimes? | Department...  

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

Modification t Facilitate Future Combustion Regimes? Fuel Modification t Facilitate Future Combustion Regimes? 2005 Diesel Engine Emissions Reduction (DEER) Conference...

486

Advanced combustion zone retrofitting Lidkoeping BFB establishes a state-of-the-art design for waste firing  

SciTech Connect (OSTI)

The oil crisis in 1973 gave an impetus to the development of the fluidized bed combustion technology for power and heat generation with local, often low quality, fuels. Kvaerner delivered the first Bubbling Fluidized Bed (BFB) for Municipal Solid Waste (MSW) firing in 1979 and the first waste fired Circulating Fluidized Bed (CFB) in 1984. Since this introduction Kvaerner has delivered 13 fluidized beds based on MSW out of a total of over 60 BFB and CFB delivers (in the range 5--165 MW{sub ht}). The ever more stringent demands on emissions performance, efficiency and availability have induced a continuous series of design enhancements culminating in the state-of-the-art BFB boilers at Lidkoeping BFB (in operation since 1985 on shredded MSW) was induced by new emission standards and need for increased output. The modified design was based on learning experience from Kvaerner Waste To Energy (WTE) BFB installations and an extensive R and D program. The design has fulfilled all expectations and established a third generation design for MSW fueled BFB-boilers. The green field installation at BCH Energy will commence operation in 1995. Design features include the Advanced Combustion Zone with an air swept fuel inlet spout, an asymmetrical overfire air (OFA) system installed in a double arch arrangement and directional bottom air nozzles. Also included are an integrated ash classifier, an improved back pass surface arrangement and a SNCR-system based on NH{sub 3}.

Tellgren, E.; Hagman, U.; Victoren, A.

1995-12-31T23:59:59.000Z

487

Fuel Effects on Mixing-Controlled Combustion Strategies for High...  

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

Fuel Effects on Mixing-Controlled Combustion Strategies for High-Efficiency Clean-Combustion Engines Fuel Effects on Mixing-Controlled Combustion Strategies for High-Efficiency...

488

Large Diesel Engine Lubrication  

Science Journals Connector (OSTI)

Centralized lubrication for slow-speed internal combustion engines ; Marine diesel engine lubrication ...

Hans Gaca; Jan Ruiter; Götz Mehr; Theo Mang

2014-01-01T23:59:59.000Z

489

Combustion, Efficiency, and Fuel Effects in a Spark-Assisted HCCI Gasoline Engine  

Broader source: Energy.gov [DOE]

2004 Diesel Engine Emissions Reduction (DEER) Conference Presentation: Oak Ridge National Laboratory, Fuel, Engines, and Emissions Research Center

490

Emissions Control for Lean Gasoline Engines  

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

Evaluation Meeting June 7-10, 2010 Gurpreet Singh and Ken Howden Advanced Combustion Engine Program U.S. Department of Energy 2 Managed by UT-Battelle for the Department of...

491

Optical-Engine and Surrogate-Fuels Research for an Improved Understand...  

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

Optical-Engine and Surrogate-Fuels Research for an Improved Understanding of Fuel Effects on Advanced-Combustion Strategies Optical-Engine and Surrogate-Fuels Research for an...

492

THE ADVANCED COURSE IN ENGINEERING ON CYBER A Learning Community for Developing Cyber-Security Leaders  

E-Print Network [OSTI]

THE ADVANCED COURSE IN ENGINEERING ON CYBER SECURITY A Learning Community for Developing Cyber-Security Advanced Course in Engineering, ACE-CS immerses students in the cyber-security discipline through for the program. Key words: Cyber-security education, technical leadership, learning community. 1. INTRODUCTION

493

ENCH 473 Electrochemical Energy Engineering ENCH 648K Advanced Batteries and Fuel Cells  

E-Print Network [OSTI]

ENCH 473 Electrochemical Energy Engineering ENCH 648K Advanced Batteries and Fuel Cells Spring 2014 Syllabus Course: ENCH 473 Electrochemical Energy Engineering ENCH: 648K Advanced Batteries and Fuel Cells, with emphasis on the principle and performance of batteries, supercapacitors and fuel cells. The objective

Rubloff, Gary W.

494

A new hybrid pneumatic combustion engine to improve fuel consumption of wind–Diesel power system for non-interconnected areas  

Science Journals Connector (OSTI)

This paper presents an evaluation of an optimized Hybrid Pneumatic-Combustion Engine (HPCE) concept that permits reducing fuel consumption for electricity production in non-interconnected remote areas, originally equipped with hybrid Wind–Diesel System (WDS). Up to now, most of the studies on the pneumatic hybridization of Internal Combustion Engines (ICE) have dealt with two-stroke pure pneumatic mode. The few studies that have dealt with hybrid pneumatic-combustion four-stroke mode require adding a supplementary valve to charge compressed air in the combustion chamber. This modification means that a new cylinder head should be fabricated. Moreover, those studies focus on spark ignition engines and are not yet validated for Diesel engines. Present HPCE is capable of making a Diesel engine operate under two-stroke pneumatic motor mode, two-stroke pneumatic pump mode and four-stroke hybrid mode, without needing an additional valve in the combustion chamber. This fact constitutes this study’s strength and innovation. The evaluation of the concept is based on ideal thermodynamic cycle modeling. The optimized valve actuation timings for all modes lead to generic maps that are independent of the engine size. The fuel economy is calculated for a known site during a whole year, function of the air storage volume and the wind power penetration rate.

Tammam Basbous; Rafic Younes; Adrian Ilinca; Jean Perron

2012-01-01T23:59:59.000Z

495

In-cylinder investigations and analysis of a SI gas engine fuelled with H2 and CO rich syngas fuel: Sensitivity analysis of combustion descriptors for engine diagnostics and control  

Science Journals Connector (OSTI)

Abstract The sensitivity of combustion phasing and combustion descriptors to ignition timing, load and mixture quality on fuelling a multi-cylinder natural gas engine with bio-derived H2 and CO rich syngas is addressed. While the descriptors for conventional fuels are well established and are in use for closed loop engine control, presence of H2 in syngas potentially alters the mixture properties and hence combustion phasing, necessitating the current study. The ability of the descriptors to predict abnormal combustion, hitherto missing in the literature, is also addressed. Results from experiments using multi-cylinder