National Library of Energy BETA

Sample records for diesel engine iv

  1. Optimization of Advanced Diesel Engine Combustion Strategies...

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

    More Documents & Publications Optimization of Advanced Diesel Engine Combustion Strategies Optimization of Advanced Diesel Engine Combustion Strategies Computational Fluid Dynamics ...

  2. Diesel Engines: Environmental Impact and Control | Department...

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

    Environmental Impact and Control Diesel Engines: Environmental Impact and Control 2002 ... More Documents & Publications Cleaning Up Diesel Engines DIesel Emission Control ...

  3. Cleaning Up Diesel Engines | Department of Energy

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

    Diesel Engines Cleaning Up Diesel Engines 2005 Diesel Engine Emissions Reduction (DEER) Conference Presentations and Posters 2005_deer_witherspoon.pdf (333.11 KB) More Documents & Publications ADEC II Universal SCR Retrofit System for On-road and Off-road Diesel Engines DIesel Emission Control Technology Developments The Need to Reduce Mobile Source Emissions in the South Coast Air Basin

  4. 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 Use of Low Cetane Fuel to Enable Low Temperature ...

  5. Next Generation Diesel Engine Control

    Broader source: Energy.gov [DOE]

    Presentation given at the 2007 Diesel Engine-Efficiency & Emissions Research Conference (DEER 2007). 13-16 August, 2007, Detroit, Michigan. Sponsored by the U.S. Department of Energy's (DOE) Office of FreedomCAR and Vehicle Technologies (OFCVT).

  6. Advanced Diesel Engine and Aftertreatment Technology Development...

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

    Advanced Diesel Engine and Aftertreatment Technology Development for Tier 2 Emissions 2003 DEER Conference Presentation: Detroit Diesel Corporation PDF icon 2003deerbolton1.pdf ...

  7. Technology Development for Light Duty High Efficient Diesel Engines...

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

    Light Duty High Efficient Diesel Engines Technology Development for Light Duty High Efficient Diesel Engines Improve the efficiency of diesel engines for light duty applications ...

  8. Computational Fluid Dynamics Modeling of Diesel Engine Combustion...

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

    Computational Fluid Dynamics Modeling of Diesel Engine Combustion and Emissions Computational Fluid Dynamics Modeling of Diesel Engine Combustion and Emissions 2005 Diesel Engine ...

  9. Advanced Modeling of Direct-Injection Diesel Engines | Department...

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

    Modeling of Direct-Injection Diesel Engines Advanced Modeling of Direct-Injection Diesel Engines 2005 Diesel Engine Emissions Reduction (DEER) Conference Presentations and Posters ...

  10. Perspectives Regarding Diesel Engine Emissions Reduction in the...

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

    Perspectives Regarding Diesel Engine Emissions Reduction in the Northeast Perspectives Regarding Diesel Engine Emissions Reduction in the Northeast 2004 Diesel Engine Emissions ...

  11. Technical Challenges and Opportunities Light-Duty Diesel Engines...

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

    Challenges and Opportunities Light-Duty Diesel Engines in North America Technical Challenges and Opportunities Light-Duty Diesel Engines in North America 2005 Diesel Engine ...

  12. North American Market Challenges for Diesel Engines | Department...

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

    North American Market Challenges for Diesel Engines North American Market Challenges for Diesel Engines 2004 Diesel Engine Emissions Reduction (DEER) Conference Presentation: Gale ...

  13. Diesel engine fuel systems

    SciTech Connect (OSTI)

    1994-12-31

    The film shows the basic structure of diesel systems, including the parts and operation of injectors and fuel pumps. It discusses Bosch, General Motors, and Excello Equipment. This title has been declared obsolete for use within the sponsoring agency, but may have content value for educational use.

  14. Diesel engine fuel systems

    SciTech Connect (OSTI)

    Not Available

    1994-01-01

    The film shows the basic structure of diesel systems, including the parts and operation of injectors and fuel pumps. It discusses Bosch, General Motors, and Excello Equipment. This title has been declared obsolete for use within the sponsoring agency, but may have content value for educational use.

  15. BPM Diesel Engineering | Open Energy Information

    Open Energy Info (EERE)

    Kingdom Zip: WR12 7NL Product: Converts diesel engines to operate on Dual Fuel using a digital generic system. References: BPM Diesel Engineering1 This article is a stub. You can...

  16. Nanocatalysts for Diesel Engine Emissions Remediation

    SciTech Connect (OSTI)

    2009-05-01

    This factsheet describes a research project whose goal is to develop durable zeolite nanocatalysts with broad temperature operating windows to treat diesel engine emissions, thus enabling diesel engine equipment and vehicles to meet regulatory requirements.

  17. Diesel Engine Waste Heat Recovery Utilizing Electric Turbocompound...

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

    More Documents & Publications Diesel Engine Waste Heat Recovery Utilizing Electric Trubocompound Technology Diesel Engine Waste Heat Recovery Utilizing Electric Turbocompound ...

  18. Diesel Engine Waste Heat Recovery Utilizing Electric Turbocompound...

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

    More Documents & Publications Diesel Engine Waste Heat Recovery Utilizing Electric Turbocompound Technology Diesel Engine Waste Heat Recovery Utilizing Electric Trubocompound ...

  19. Diesel Engine Waste Heat Recovery Utilizing Electric Trubocompound...

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

    More Documents & Publications Diesel Engine Waste Heat Recovery Utilizing Electric Turbocompound Technology Diesel Engine Waste Heat Recovery Utilizing Electric Turbocompound ...

  20. Future Diesel Engine Thermal Efficiency Improvement andn Emissions...

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

    Diesel Engine Thermal Efficiency Improvement andn Emissions Control Technology Future Diesel Engine Thermal Efficiency Improvement andn Emissions Control Technology 2005 Diesel ...

  1. Diesel Engine Light Truck Application

    SciTech Connect (OSTI)

    2007-12-31

    The Diesel Engine Light Truck Application (DELTA) program consists of two major contracts with the Department of Energy (DOE). The first one under DE-FC05-97-OR22606, starting from 1997, was completed in 2001, and consequently, a final report was submitted to DOE in 2003. The second part of the contract was under DE-FC05-02OR22909, covering the program progress from 2002 to 2007. This report is the final report of the second part of the program under contract DE-FC05-02OR22909. During the course of this contract, the program work scope and objectives were significantly changed. From 2002 to 2004, the DELTA program continued working on light-duty engine development with the 4.0L V6 DELTA engine, following the accomplishments made from the first part of the program under DE-FC05-97-OR22606. The program work scope in 2005-2007 was changed to the Diesel Particulate Filter (DPF) soot layer characterization and substrate material assessment. This final report will cover two major technical tasks. (1) Continuation of the DELTA engine development to demonstrate production-viable diesel engine technologies and to demonstrate emissions compliance with significant fuel economy advantages, covering progress made from 2002 to 2004. (2) DPF soot layer characterization and substrate material assessment from 2005-2007.

  2. Materials-Enabled High-Efficiency Diesel Engines (CRADA with...

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

    Engines (CRADA with Caterpillar) Materials-Enabled High-Efficiency Diesel Engines (CRADA ... More Documents & Publications Materials-Enabled High-Efficiency Diesel Engines ...

  3. Staged direct injection diesel engine

    DOE Patents [OSTI]

    Baker, Quentin A.

    1985-01-01

    A diesel engine having staged injection for using lower cetane number fuels than No. 2 diesel fuel. The engine includes a main fuel injector and a pilot fuel injector. Pilot and main fuel may be the same fuel. The pilot injector injects from five to fifteen percent of the total fuel at timings from 20.degree. to 180.degree. BTDC depending upon the quantity of pilot fuel injected, the fuel cetane number and speed and load. The pilot fuel injector is directed toward the centerline of the diesel cylinder and at an angle toward the top of the piston, avoiding the walls of the cylinder. Stratification of the early injected pilot fuel is needed to reduce the fuel-air mixing rate, prevent loss of pilot fuel to quench zones, and keep the fuel-air mixture from becoming too fuel lean to become effective. In one embodiment, the pilot fuel injector includes a single hole for injection of the fuel and is directed at approximately 48.degree. below the head of the cylinder.

  4. Diesel Engine Alternatives | Department of Energy

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

    Alternatives Diesel Engine Alternatives 2003 DEER Conference Presentation: Southwest Research Institute PDF icon 2003deerryan.pdf More Documents & Publications Combustion Targets ...

  5. Cutting NOx from Diesel Engines with Membrane-Generated Nitrogen...

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

    Cutting NOx from Diesel Engines with Membrane-Generated Nitrogen-Enriched Air Cutting NOx from Diesel Engines with Membrane-Generated Nitrogen-Enriched Air 2005 Diesel Engine ...

  6. Adaptive Control to Improve Low Temperature Diesel Engine Combustion...

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

    Control to Improve Low Temperature Diesel Engine Combustion Adaptive Control to Improve Low Temperature Diesel Engine Combustion Presentation given at DEER 2006, August 20-24, ...

  7. Diesel Engine Oil Technology Insights and Opportunities | Department...

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

    Oil Technology Insights and Opportunities Diesel Engine Oil Technology Insights and Opportunities Perrformance of API CJ-4 diesel engine lubricating oil and emerging lubricant ...

  8. Design Challenges of Locomotive Diesel Engines | Department of...

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

    5 Diesel Engine Emissions Reduction (DEER) Conference Presentations and Posters 2005deerprimus.pdf (145.61 KB) More Documents & Publications Future Diesel Engine Thermal ...

  9. Progress on DOE Vehicle Technologies Light-Duty Diesel Engine...

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

    on DOE Vehicle Technologies Light-Duty Diesel Engine Efficiency and Emissions Milestones Progress on DOE Vehicle Technologies Light-Duty Diesel Engine Efficiency and Emissions ...

  10. Recent Diesel Engine Emission Mitigation Activities of the Maritime...

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

    Diesel Engine Emission Mitigation Activities of the Maritime Administration Energy Technologies Program Recent Diesel Engine Emission Mitigation Activities of the Maritime ...

  11. Update on Modeling for Effective Diesel Engine Aftertreatment...

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

    Modeling for Effective Diesel Engine Aftertreatment Implementation - Master Plan, Status and Critical Needs Update on Modeling for Effective Diesel Engine Aftertreatment ...

  12. Diesel and Gasoline Engine Emissions: Characterization of Atmosphere...

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

    Diesel and Gasoline Engine Emissions: Characterization of Atmosphere Composition and Health Responses to Inhaled Emissions 2005 Diesel Engine Emissions Reduction (DEER) Conference ...

  13. Advances in Diesel Engine Technologies for European Passenger...

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

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

  14. Emission Performance of Modern Diesel Engines Fueled with Biodiesel...

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

    Performance of Modern Diesel Engines Fueled with Biodiesel Emission Performance of Modern Diesel Engines Fueled with Biodiesel This study presents full quantification of ...

  15. Fuels and Lubricants to Support Advanced Diesel Engine Technology...

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

    New Diesel Feedstocks and Future Fuels Future Engine Fluids Technologies: Durable, Fuel-Efficient, and Emissions-Friendly New Feedstocks and Replacement Fuel Diesel Engine ...

  16. Perspectives Regarding Diesel Engine Emissions Reduction in the Northeast |

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

    Department of Energy Perspectives Regarding Diesel Engine Emissions Reduction in the Northeast Perspectives Regarding Diesel Engine Emissions Reduction in the Northeast 2004 Diesel Engine Emissions Reduction (DEER) Presentation: North East States for Coordinated Air Use Management 2004_deer_block.pdf (36.26 KB) More Documents & Publications Dumping Dirty Diesels: The View From the Bridge EPA Diesel Update Ultra-Low Sulfur diesel Update & Future Light Duty Diesel

  17. Effect of GTL Diesel Fuels on Emissions and Engine Performance

    Office of Energy Efficiency and Renewable Energy (EERE)

    2004 Diesel Engine Emissions Reduction (DEER) Conference Presentation: DaimlerChrysler Research and Technology

  18. Diesel Engine Waste Heat Recovery Utilizing Electric Turbocompound Technology

    Broader source: Energy.gov [DOE]

    2004 Diesel Engine Emissions Reduction (DEER) Conference Presentation: Caterpillar/U.S. Department of Energy

  19. Attaining Tier 2 Emissions Through Diesel Engine and Aftertreatment...

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

    Engine and Aftertreatment Integration - Strategy and Experimental Results Attaining Tier 2 Emissions Through Diesel Engine and Aftertreatment Integration - Strategy and ...

  20. Multicylinder Diesel Engine Design for HCCI Operation

    Broader source: Energy.gov [DOE]

    2007 Diesel Engine-Efficiency & Emissions Research Conference (DEER 2007). 13-16 August, 2007, Detroit, Michigan. Sponsored by the U.S. Department of Energy's (DOE) Office of FreedomCAR and Vehicle Technologies (OFCVT).

  1. Fuels and Lubricants to Support Advanced Diesel Engine Technology |

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

    Department of Energy and Lubricants to Support Advanced Diesel Engine Technology Fuels and Lubricants to Support Advanced Diesel Engine Technology 2005 Diesel Engine Emissions Reduction (DEER) Conference Presentations and Posters 2005_deer_baranescu.pdf (87.57 KB) More Documents & Publications New Diesel Feedstocks and Future Fuels Future Engine Fluids Technologies: Durable, Fuel-Efficient, and Emissions-Friendly New Feedstocks and Replacement Fuel Diesel Engine Challenges

  2. Estimation and Control of Diesel Engine Processes Utilizing Variable...

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

    Estimation and Control of Diesel Engine Processes Utilizing Variable Intake Valve Actuation Air handling system model for multi-cylinder variable geometry turbocharged diesel ...

  3. Computational Fluid Dynamics Modeling of Diesel Engine Combustion and

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

    Emissions | Department of Energy Computational Fluid Dynamics Modeling of Diesel Engine Combustion and Emissions Computational Fluid Dynamics Modeling of Diesel Engine Combustion and Emissions 2005 Diesel Engine Emissions Reduction (DEER) Conference Presentations and Posters 2005_deer_reitz.pdf (682.47 KB) More Documents & Publications Experiments and Modeling of Two-Stage Combustion in Low-Emissions Diesel Engines Comparison of Conventional Diesel and Reactivity Controlled Compression

  4. An Innovative Pressure Sensor Glow Plug Offers Improved Diesel Engine

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

    Closed-loop Control | Department of Energy Innovative Pressure Sensor Glow Plug Offers Improved Diesel Engine Closed-loop Control An Innovative Pressure Sensor Glow Plug Offers Improved Diesel Engine Closed-loop Control Describes glow plug with integrated pressure sensor for closed-loop control of diesel engine combustion p-20_ramond.pdf (459.53 KB) More Documents & Publications Glow Plug Integrated Piezo-Ceramic Combustion Sensor for Diesel Engines Diesel Combustion Control with

  5. Consider the DME alternative for diesel engines

    SciTech Connect (OSTI)

    Fleisch, T.H.; Meurer, P.C.

    1996-07-01

    Engine tests demonstrate that dimethyl ether (DME, CH{sub 3}OCH{sub 3}) can provide an alternative approach toward efficient, ultra-clean and quiet compression ignition (CI) engines. From a combustion point of view, DME is an attractive alternative fuel for CI engines, primarily for commercial applications in urban areas, where ultra-low emissions will be required in the future. DME can resolve the classical diesel emission problem of smoke emissions, which are completely eliminated. With a properly developed DME injection and combustion system, NO{sub x} emissions can be reduced to 40% of Euro II or U.S. 1998 limits, and can meet the future ULEV standards of California. Simultaneously, the combustion noise is reduced by as much as 15 dB(A) below diesel levels. In addition, the classical diesel advantages such as high thermal efficiency, compression ignition, engine robustness, etc., are retained.

  6. 2004 Diesel Engine Emissions Reduction (DEER) Conference Presentations |

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

    Department of Energy 4 Diesel Engine Emissions Reduction (DEER) Conference Presentations 2004 Diesel Engine Emissions Reduction (DEER) Conference Presentations August 29-September 2, 2004 Coronado, California The following documents are available as Adobe Acrobat PDFs. Download Adobe Reader. Plenary Session: Diesel Efficiency and Emissions Policy Session 7: Combustion and Homogeneous Charge Compression Ignition Regimes Session 1: Emerging Diesel Technologies Session 8A: Diesel Engine

  7. Performance of a High Speed Indirect Injection Diesel Engine...

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

    Investigation of Bio-Diesel Fueled Engines under Low-Temperature Combustion Strategies The Linear Engine Pathway of Transformation High Fuel Economy Heavy-Duty Truck Engine

  8. Effect of Exhaust Gas Recirculation (EGR) on Diesel Engine Oil...

    Office of Environmental Management (EM)

    on diesel engine oil during standard test with an API Cummins M-11 engine. ... Fuel Economy and Engine Wear AVTA: Oil Bypass Filter Specifications and Test Procedures

  9. Technology Development for Light Duty High Efficient Diesel Engines |

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

    Department of Energy Light Duty High Efficient Diesel Engines Technology Development for Light Duty High Efficient Diesel Engines Improve the efficiency of diesel engines for light duty applications through technical advances in system optimization. deer09_stanton.pdf (1.7 MB) More Documents & Publications Light Duty Efficient Clean Combustion Advanced Diesel Engine Technology Development for HECC Effects of Biomass Fuels on Engine & System Out Emissions for Short Term Endurance

  10. Hydrogen Assisted Diesel Combustion in a Common Rail Turbodiesel Engine |

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

    Department of Energy Assisted Diesel Combustion in a Common Rail Turbodiesel Engine Hydrogen Assisted Diesel Combustion in a Common Rail Turbodiesel Engine This study measured the effects of hydrogen substitution on engine performance and reducing NOx emissions in a diesel engine deer09_boehman.pdf (150.76 KB) More Documents & Publications Particulate Produced from Advanced Combustion Operation in a Compression Ignition Engine Advanced Diesel Combustion with Low Hydrocarbon and Carbon

  11. Diesel Engine Waste Heat Recovery Utilizing Electric Trubocompound

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

    Technology | Department of Energy Trubocompound Technology Diesel Engine Waste Heat Recovery Utilizing Electric Trubocompound Technology 2003 DEER Conference Presentation: Caterpillar Inc. 2003_deer_algrain.pdf (5.77 MB) More Documents & Publications Diesel Engine Waste Heat Recovery Utilizing Electric Turbocompound Technology Diesel Engine Waste Heat Recovery Utilizing Electric Turbocompound Technology An Engine System Approach to Exhaust Waste Heat Recovery

  12. THE DIESEL ENGINE'S CHALLENGE IN THE NEW MILLENIUM

    SciTech Connect (OSTI)

    Fairbanks, John W.

    2000-08-20

    Diesel engines are the dominant propulsion engine of choice for most of the commercial surface transportation applications in the world. Consider agricultural uses: Diesel engine power is used to prepare the soil, transport the bulk seed or seedlings, pump irrigation water, and spray fertilizers, mechanically harvest some crops and distribute the produce to market. Diesel engines power virtually all of the off-highway construction equipment. Deep water commercial freighters or containerships are almost all diesel engine powered. The passenger ships are primarily either diesel or a combination of diesel and gas turbine, referred to as CODAG or CODOG.

  13. 2002 Diesel Engine Emissions Reduction (DEER) Conference Presentations |

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

    Department of Energy 2 Diesel Engine Emissions Reduction (DEER) Conference Presentations 2002 Diesel Engine Emissions Reduction (DEER) Conference Presentations August 25-29, 2002 San Diego, California The following documents are available as Adobe Acrobat PDFs. Download Adobe Reader. Session 1: Diesel Engine Emissions Reduction Strategies Session 7: Emissions-Related Technologies and Regulations Session 2: Applied Thermoelectric Generator R&D Session 8: Emerging Diesel Engine Technology

  14. Light-duty diesel engine development status and engine needs

    SciTech Connect (OSTI)

    Not Available

    1980-08-01

    This report reviews, assesses, and summarizes the research and development status of diesel engine technology applicable to light-duty vehicles. In addition, it identifies specific basic and applied research and development needs in light-duty diesel technology and related health areas where initial or increased participation by the US Government would be desirable. The material presented in this report updates information provided in the first diesel engine status report prepared by the Aerospace Corporation for the Department of Energy in September, 1978.

  15. Diesel engines vs. spark ignition gasoline engines -- Which is ``greener``?

    SciTech Connect (OSTI)

    Fairbanks, J.W.

    1997-12-31

    Criteria emissions, i.e., NO{sub x}, PM, CO, CO{sub 2}, and H{sub 2}, from recently manufactured automobiles, compared on the basis of what actually comes out of the engines, the diesel engine is greener than spark ignition gasoline engines and this advantage for the diesel engine increases with time. SI gasoline engines tend to get out of tune more than diesel engines and 3-way catalytic converters and oxygen sensors degrade with use. Highway measurements of NO{sub 2}, H{sub 2}, and CO revealed that for each model year, 10% of the vehicles produce 50% of the emissions and older model years emit more than recent model year vehicles. Since 1974, cars with SI gasoline engines have uncontrolled emission until the 3-way catalytic converter reaches operating temperature, which occurs after roughly 7 miles of driving. Honda reports a system to be introduced in 1998 that will alleviate this cold start problem by storing the emissions then sending them through the catalytic converter after it reaches operating temperature. Acceleration enrichment, wherein considerable excess fuel is introduced to keep temperatures down of SI gasoline engine in-cylinder components and catalytic converters so these parts meet warranty, results in 2,500 times more CO and 40 times more H{sub 2} being emitted. One cannot kill oneself, accidentally or otherwise, with CO from a diesel engine vehicle in a confined space. There are 2,850 deaths per year attributable to CO from SI gasoline engine cars. Diesel fuel has advantages compared with gasoline. Refinery emissions are lower as catalytic cracking isn`t necessary. The low volatility of diesel fuel results in a much lower probability of fires. Emissions could be improved by further reducing sulfur and aromatics and/or fuel additives. Reformulated fuel has become the term covering reducing the fuels contribution to emissions. Further PM reduction should be anticipated with reformulated diesel and gasoline fuels.

  16. The effect of diesel injection timing on a turbocharged diesel engine fumigated with ethanol

    SciTech Connect (OSTI)

    Schroeder, A.R.; Savage, L.D.; White, R.A.; Sorenson, S.C.

    1988-01-01

    A study has been done to determine the effect of changes in diesel injection timing on engine performance using a multicylinder, turbocharged diesel engine fumigated with ethanol. Tests at half load with engine speeds of 2000 and 2400 rpm indicated that a 4% increase in thermal efficiency could be obtained by advancing the diesel injection timing from 18 to 29/sup 0/BTDC. The effect of changes in diesel timing was much more pronounced at 2400 rpm. Advancing the diesel timing decreased CO and unburned HC levels significantly. The increase in NO levels due to advances in diesel timing was offset by the decrease in NO due to ethanol addition.

  17. New 11 liter Komatsu diesel engine

    SciTech Connect (OSTI)

    Mizusawa, M.; Tanosaki, T.; Kawase, M.; Oguchi, T.

    1984-01-01

    New 6 cylinder direct injection 11 liter diesel engines which have naturally aspirated, turbocharged, and turbocharged-aftercooled versions have been developed and moved in production at the end of 1983. The highest output of the turbocharged-aftercooled version is 276 kW (375 ps) at 2200 RPM. Based on Komatsu new technologies 125 mm bore diesel has been designed to meet the users' demands, such as compact in size, light in weight, extremely high performance, high reliability and durability. The turbocharged and turbocharged-aftercooled engines are characterized by the adoption of the ductile cast iron piston which is the first application into the high speed, four cycle diesels in production in the world, and which was enabled by Komatsu design and precision casting technologies. This paper also covers the other design aspects and performance characteristics.

  18. Exploring Low Emission Lubricants for Diesel Engines

    SciTech Connect (OSTI)

    Perez, J. M.

    2000-07-06

    A workshop to explore the technological issues involved with the removal of sulfur from lubricants and the development of low emission diesel engine oils was held in Scottsdale, Arizona, January 30 through February 1, 2000. It presented an overview of the current technology by means of panel discussions and technical presentations from industry, government, and academia.

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

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

    Department of Energy Oxygen-Enriched Combustion for Military Diesel Engine Generators Oxygen-Enriched Combustion for Military Diesel Engine Generators Substantial increases in brake power and considerably lower peak pressure can result from oxygen-enriched diesel combustion deer09_yelvington.pdf (196.85 KB) More Documents & Publications Development Methodology for Power-Dense Military Diesel Engine Oxygen-Enriched Combustion Emission Control Strategy for Downsized Light-Duty Diese

  20. How Exhaust Emissions Drive Diesel Engine Fuel Efficiency | Department of

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

    Energy How Exhaust Emissions Drive Diesel Engine Fuel Efficiency How Exhaust Emissions Drive Diesel Engine Fuel Efficiency 2004 Diesel Engine Emissions Reduction (DEER) Conference Presentation: Pacific Northwest Laboratory 2004_deer_muntean.pdf (922.09 KB) More Documents & Publications The State of the Science in Diesel Particulate Control APBF-DEC Heavy Duty NOx Adsorber/DPF Project: Heavy Duty Linehaul Platform Project Update Measurement and Characterization of Lean NOx Adsorber

  1. Demonstration of a 50% Thermal Efficient Diesel Engine - Including...

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

    The Path to a 50% Thermal Efficient Engine Heavy Truck Clean Diesel (HTCD) Program: 2007 Demonstration Truck Integrated Virtual Lab in Supporting Heavy Duty Engine and Vehicle ...

  2. Cleaner, More Efficient Diesel Engines

    ScienceCinema (OSTI)

    Musculus, Mark

    2014-02-26

    Mark Musculus, an engine combustion scientist at Sandia National Laboratories, led a study that outlines the science base for auto and engine manufacturers to build the next generation of cleaner, more efficient engines using low-temperature combustion. Here, Musculus discusses the work at Sandia's Combustion Research Facility.

  3. Cleaner, More Efficient Diesel Engines

    SciTech Connect (OSTI)

    Musculus, Mark

    2013-08-13

    Mark Musculus, an engine combustion scientist at Sandia National Laboratories, led a study that outlines the science base for auto and engine manufacturers to build the next generation of cleaner, more efficient engines using low-temperature combustion. Here, Musculus discusses the work at Sandia's Combustion Research Facility.

  4. Clean Diesel Engine Component Improvement Program | Department of Energy

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

    Diesel Engine Component Improvement Program Clean Diesel Engine Component Improvement Program 2005_deer_may.pdf (547.13 KB) More Documents & Publications Noxtechs PAC System Development and Demonstration Plasma Assisted Catalysis System for NOx Reduction Unique Catalyst System for NOx Reduction in Diesel Exhaust

  5. Lean-NOx Catalyst Development for Diesel Engine Applications | Department

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

    of Energy Lean-NOx Catalyst Development for Diesel Engine Applications Lean-NOx Catalyst Development for Diesel Engine Applications 2002 DEER Conference Presentation: Caterpillar Inc. 2002_deer_park.pdf (302.37 KB) More Documents & Publications Lean NOx Catalysis Research and Development Plasma-Activated Lean NOx Catalysis for Heavy-Duty Diesel Emissions Control

  6. Integrated diesel engine NOx reduction technology development

    SciTech Connect (OSTI)

    Hoelzer, J.; Zhu, J.; Savonen, C.L.; Kharas, K.C.C.; Bailey, O.H.; Miller, M.; Vuichard, J.

    1997-12-31

    The effectiveness of catalyst performance is a function of the inlet exhaust gas temperature, gas flow rate, concentration of NO{sub x} and oxygen, and reductant quantity and species. Given this interrelationship, it becomes immediately clear that an integrated development approach is necessary. Such an approach is taken in this project. As such, the system development path is directed by an engine-catalyst engineering team. Of the tools at the engine engineer`s disposal the real-time aspects of computer assisted subsystem modeling is valuable. It will continue to be the case as ever more subtle improvements are needed to meet competitive performance, durability, and emission challenges. A review of recent prototype engines has shown that considerable improvements to base diesel engine technology are being made. For example, HSDI NO{sub x} has been reduced by a factor of two within the past ten years. However, additional substantial NO{sub x}/PM reduction is still required for the future. A viable lean NO{sub x} catalyst would be an attractive solution to this end. The results of recent high and low temperature catalyst developments were presented. High temperature base metal catalysts have been formulated to produce very good conversion efficiency and good thermal stability, albeit at temperatures near the upper range of diesel engine operation. Low temperature noble metal catalysts have been developed to provide performance of promising 4-way control but need increased NO{sub x} reduction efficiency.

  7. Advances in Diesel Engine Technologies for European Passenger Vehicles |

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

    Department of Energy Diesel Engine Technologies for European Passenger Vehicles Advances in Diesel Engine Technologies for European Passenger Vehicles 2002 DEER Conference Presentation: Volkswagen AG 2002_deer_schindler.pdf (1.73 MB) More Documents & Publications Accelerating Light-Duty Diesel Sales in the U.S. Market Light-Duty Diesel Market Potential in North America Meeting the CO2 Challenge DEER 2002

  8. Clean and Efficient Diesel Engine

    SciTech Connect (OSTI)

    2010-12-31

    Task 1 was to design study for fuel-efficient system configuration. The objective of task 1 was to perform a system design study of locomotive engine configurations leading to a 5% improvement in fuel efficiency. Modeling studies were conducted in GT-Power to perform this task. GT-Power is an engine simulation tool that facilitates modeling of engine components and their system level interactions. It provides the capability to evaluate a variety of engine technologies such as exhaust gas circulation (EGR), variable valve timing, and advanced turbo charging. The setup of GT-Power includes a flexible format that allows the effects of variations in available technologies (i.e., varying EGR fractions or fuel injection timing) to be systematically evaluated. Therefore, development can be driven by the simultaneous evaluation of several technology configurations.

  9. Natural Oils - The Next Generation of Diesel Engine Lubricants? |

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

    Department of Energy Natural Oils - The Next Generation of Diesel Engine Lubricants? Natural Oils - The Next Generation of Diesel Engine Lubricants? 2002 DEER Conference Presentation: The Pennsylvania State University 2002_deer_perez.pdf (315.66 KB) More Documents & Publications Reducing Lubricant Ash Impact on Exhaust Aftertreatment with a Oil Conditioning Filter Effect of Exhaust Gas Recirculation (EGR) on Diesel Engine Oil - Impact on Wear Future Engine Fluids Technologies: Durable,

  10. Future Diesel Engine Thermal Efficiency Improvement andn Emissions Control

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

    Technology | Department of Energy Diesel Engine Thermal Efficiency Improvement andn Emissions Control Technology Future Diesel Engine Thermal Efficiency Improvement andn Emissions Control Technology 2005 Diesel Engine Emissions Reduction (DEER) Conference Presentations and Posters 2005_deer_puetz.pdf (742.3 KB) More Documents & Publications Integrated Engine and Aftertreatment Technology Roadmap for EPA 2010 Heavy-duty Emissions Regulations Model-Based Transient Calibration Optimization

  11. Utiization of alternate fuels in diesel engines

    SciTech Connect (OSTI)

    Lestz, S.S.

    1980-09-01

    Accomplishments during three years entitled The Utilization of Alternate Fuels in Diesel Engines are summarized. Experiments were designed and test equipment set-up for the purpose of evaluating the use of methanol as a fumigant for light-duty Diesel engine service. The major experimental results were obtained from a multicylinder automotive Diesel engine. However, fundamental studies employing a GC/micro-reactor and a constant volume combustion bomb were also started. The purpose of this work was to measure some of the chemical and physical properties of methanol and methanol-air mixtures. The laminar flame velocity for various mixtures has been measured in the combustion bomb and thermal degradation studies have begun in the GC/micro-reactor. An Oldsmobile 5.7 liter V/8 Diesel engine was fumigated with methanol in amounts up to 40% of the fuel energy. The primary objectives of the study were to determine the effect of methanol fumigation on fuel efficiency, smoke, nitric oxide emission, and the occurrence of severe knock. An assessment of the biological activity for samples of the raw exhaust particulate and its soluble organic extract was also made using boh the Ames Salmonella typhimurium test and the B. subtilis Comptest. Generally, methanol fumigation was found to decrease NO emission for all conditions, to have a slight effect on smoke opacity, and to have a beneficial effect on fuel efficiency at higher loads. Also at higher loads, the methanol was found to induce what was defined as knock limited operation. The biological activity of the raw particulate matter was fond to be less than that of its soluble organic extract. However, for both the fumigation of methanol did enhance the biological activity.

  12. Load Expansion with Diesel/Gasoline RCCI for Improved Engine Efficiency and Emissions

    Broader source: Energy.gov [DOE]

    This poster will describe preliminary emission results of gasoline/diesel RCCI in a medium-duty diesel engine.

  13. Proceedings of the 1998 diesel engine emissions reduction workshop [DEER

    SciTech Connect (OSTI)

    1998-12-31

    This workshop was held July 6--9, 1998 in Castine, Maine. The purpose of this workshop was to provide a multidisciplinary forum for exchange of state-of-the-art information on reduction of diesel engine emissions. Attention was focused on the following: agency/organization concerns on engine emissions; diesel engine issues and challenges; health risks from diesel engines emissions; fuels and lubrication technologies; non-thermal plasma and urea after-treatment technologies; and diesel engine technologies for emission reduction 1 and 2.

  14. Understanding diesel engine lubrication at low temperature

    SciTech Connect (OSTI)

    Smith, M.F. Jr.

    1990-01-01

    This paper reports on oil pumpability in passenger car gasoline engines that was well-characterized by an ASTM program and by individual researchers in the 1970's and early 1980's. oil pumpability in diesel engines however, was not investigated to any significant extent until the mid-1980's. This study was initiated to define the performance of several commercial viscosity modifiers in different formulations containing 3 detergent-inhibitor (DI) additive packages and 4 basestock types. The test oils were run at {minus}18{degrees} C (0{degrees} F) in a Cummins NTC-400 diesel engine. The results, when statistically analyzed, indicated that a new, second generation olefin copolymer (OCP) viscosity modifier has better performance that a first generation OCP and, furthermore, had performance equal to a polymethacrylate (PMA) viscosity modifier. The analysis also showed that one DI/base stock combination had a significant effect on performance. The apparent shear rate of the oil in the pump inlet tube was calculated from the oil pump flow rate measured at idle speed at low temperature and the pump inlet tube diameter. The shear rate and oil viscosity were used to estimate the shear stress in the pump inlet tube. The shear stress level of the engine is 56% higher than the Mini-Rotary Viscometer (MRV). Hence, the current MRV procedure is rheologically unsuitable to predict pumpability in a large diesel engine. A new device was developed for measuring the oil film thickness in the turbocharge bearing and noting the time when a full oil film is formed. Results indicate that a full oil film occurs almost immediately, well before any oil pressure is observed at the turbocharge inlet. Residual oil remaining in the bearing after shutdown may account of this observation. The oil film maintained its thickness both before, and after the first indication of oil pressure. More work is needed to study this effect.

  15. Cummins/DOE Light Truck Diesel Engine Progress Report | Department of

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

    Energy Diesel Engine Progress Report Cummins/DOE Light Truck Diesel Engine Progress Report 2002 DEER Conference Presentation: Cummins 2002_deer_stang.pdf (2.47 MB) More Documents & Publications Cummins/DOE Light Truck Clean Diesel Engine Progress Report Cummins' Next Generation Tier 2, Bin 2 Light Truck Diesel Engine Thermodynamic Systems for Tier 2 Bin 2 Diesel Engines

  16. Adapting ethanol fuels to diesel engines

    SciTech Connect (OSTI)

    Not Available

    1981-08-01

    During the 2nd International Alcohol Symposium 1977, Daimler-Benz reported on the advantages and disadvantages of the various methods of using ethanol in originally diesel-operated commercial vehicles, and especially about the first results in the field of adapting the ethanol fuel to the requirements of conventional diesel engines. Investigations to this effect were continued by Daimler-Benz AG, Stuttgart, and Mercedes-Benz of Brasil in coordination with competent Brazilian government departments. The development effort is primarily adapted to Brazilian conditions, since ethanol fuel is intended as a long-term project in this country. This report is presented under headings - auto-ignition; durability tests; remedial measures; the injection systems; ethanol quality.

  17. Advanced Diesel Engine and Aftertreatment Technology Development for Tier 2

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

    Emissions | Department of Energy Engine and Aftertreatment Technology Development for Tier 2 Emissions Advanced Diesel Engine and Aftertreatment Technology Development for Tier 2 Emissions 2003 DEER Conference Presentation: Detroit Diesel Corporation 2003_deer_bolton1.pdf (935.17 KB) More Documents & Publications Attaining Tier 2 Emissions Through Diesel Engine and Aftertreatment Integration - Strategy and Experimental Results Analytical Tool Development for Aftertreatment Sub-Systems

  18. Fuel Processor Enabled NOx Adsorber Aftertreatment System for Diesel Engine

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

    Emissions Control | Department of Energy Processor Enabled NOx Adsorber Aftertreatment System for Diesel Engine Emissions Control Fuel Processor Enabled NOx Adsorber Aftertreatment System for Diesel Engine Emissions Control 2004 Diesel Engine Emissions Reduction (DEER) Conference Presentation: Catalytica Energy Systems 2004_deer_catalytica.pdf (331 KB) More Documents & Publications Transient Dynamometer Testing of a Single-Leg NOX Adsorber Combined with a Fuel Processor for Enhanced NOx

  19. 2006 Diesel Engine-Efficiency and Emissions Research (DEER) Conference

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

    Presentations | Department of Energy 6 Diesel Engine-Efficiency and Emissions Research (DEER) Conference Presentations 2006 Diesel Engine-Efficiency and Emissions Research (DEER) Conference Presentations August 20-24, 2006 Detroit, Michigan The following documents are available as Adobe Acrobat PDFs. Download Adobe Reader. Plenary Session 1: A View from the Bridge Concurrent Technical Session 3: Diesel Engine Development Technical Session 1: Advanced Combustion Technologies, Part 1

  20. Technology Development for High Efficiency Clean Diesel Engines and a

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

    Pathway to 50% Thermal Efficiency | Department of Energy High Efficiency Clean Diesel Engines and a Pathway to 50% Thermal Efficiency Technology Development for High Efficiency Clean Diesel Engines and a Pathway to 50% Thermal Efficiency Cost reduction is a key area of emphasis for the Cummins 2nd Generation ORC WHR System. deer09_stanton.pdf (455.27 KB) More Documents & Publications High Efficient Clean Combustion for SuperTruck Advanced Diesel Engine Technology Development for HECC

  1. Attaining Tier 2 Emissions Through Diesel Engine and Aftertreatment

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

    Integration - Strategy and Experimental Results | Department of Energy Attaining Tier 2 Emissions Through Diesel Engine and Aftertreatment Integration - Strategy and Experimental Results Attaining Tier 2 Emissions Through Diesel Engine and Aftertreatment Integration - Strategy and Experimental Results The feasibility of diesel engines to meet the stringent emissions regulations of 2007 and beyond is an important consideration for light trucks and other personal transportation vehicles.

  2. Update on Modeling for Effective Diesel Engine Aftertreatment

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

    Implementation - Master Plan, Status and Critical Needs | Department of Energy Modeling for Effective Diesel Engine Aftertreatment Implementation - Master Plan, Status and Critical Needs Update on Modeling for Effective Diesel Engine Aftertreatment Implementation - Master Plan, Status and Critical Needs An integrated diesel engine-aftertreatment-vehicle system is extremely complex with numerous interacting variables and an unlimited number of control options. An experimental approach to

  3. Diesel Engine Waste Heat Recovery Utilizing Electric Turbocompound

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

    Technology | Department of Energy 2 DEER Conference Presentation: Caterpillar Inc. 2002_deer_hopmann.pdf (828.29 KB) More Documents & Publications Diesel Engine Waste Heat Recovery Utilizing Electric Turbocompound Technology Diesel Engine Waste Heat Recovery Utilizing Electric Trubocompound Technology An Engine System Approach to Exhaust Waste Heat Recovery

  4. Multicylinder Diesel Engine for Low Temperature Combustion Operation...

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

    for Low Temperature Combustion Operation Multicylinder Diesel Engine for Low Temperature Combustion Operation Fuel injection strategies to extend low temperature combustion ...

  5. Technology Development for High Efficiency Clean Diesel Engines...

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

    (455.27 KB) More Documents & Publications High Efficient Clean Combustion for SuperTruck Advanced Diesel Engine Technology Development for HECC Enabling High Efficiency ...

  6. Load Expansion with Diesel/Gasoline RCCI for Improved Engine...

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

    Load Expansion with DieselGasoline RCCI for Improved Engine Efficiency and Emissions This poster will describe preliminary emission results of gasolinediesel RCCI in a ...

  7. In Vitro Genotoxicity of Gasoline and Diesel Engine Vehicle Exhaust...

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

    and Semi-Volatile Organic Compound Materials In Vitro Genotoxicity of Gasoline and Diesel Engine Vehicle Exhaust Particulate and Semi-Volatile Organic Compound Materials 2002 ...

  8. Clean and Efficient Diesel Engines- Designing for the Customer

    Broader source: Energy.gov [DOE]

    A look at the key role that clean and efficient diesel engines will play in achieving climate and energy goals, and further improvements needed to perform this role.

  9. Development Methodology for Power-Dense Military Diesel Engine...

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

    Laboratory data and modeling results are presented on a military auxiliary power unit ... More Documents & Publications Oxygen-Enriched Combustion for Military Diesel Engine ...

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

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

    (196.85 KB) More Documents & Publications Development Methodology for Power-Dense Military Diesel Engine Oxygen-Enriched Combustion Emission Control Strategy for Downsized ...

  11. Efficiency Improvement in an Over the Road Diesel Powered Engine...

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

    Thermoelectric Systems Implemented in a Hybrid Configuration Efficiency Improvement in an Over the Road Diesel Powered Engine System by the Application of Advanced Thermoelectric ...

  12. 2006 Diesel Engine-Efficiency and Emissions Research (DEER) Conference...

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

    ... Combustion Technologies, Diesel Engine Development, ... Powered Thermoelectric Generator John C. Bass Hi-Z ... (PDF 2.1 MB) Improved Lifetime Pressure-Drop Management ...

  13. Diesel Engine Strategy & North American Market Challenges, Technology...

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

    Strategy & North American Market Challenges, Technology and Growth Diesel Engine Strategy & North American Market Challenges, Technology and Growth Presentation given at the 2007 ...

  14. Clean Diesel Engine Component Improvement Program Diesel Truck Thermoelectric Generator

    SciTech Connect (OSTI)

    Elsner, N. B.; Bass, J. C.; Ghamaty, S.; Krommenhoek, D.; Kushch, A.; Snowden, D.; Marchetti, S.

    2005-03-16

    Hi-Z Technology, Inc. (Hi-Z) is currently developing four different auxiliary generator designs that are used to convert a portion (5 to 20%) of the waste heat from vehicle engines exhaust directly to electricity. The four designs range from 200 Watts to 10 kW. The furthest along is the 1 kW Diesel Truck Thermoelectric Generator (DTTEG) for heavy duty Class 8 Diesel trucks, which, under this program, has been subjected to 543,000 equivalent miles of bouncing and jarring on PACCAR's test track. Test experience on an earlier version of the DTTEG on the same track showed the need for design modifications incorporated in DTTEG Mod 2, such as a heavy duty shock mounting system and reinforcement of the electrical leads mounting system, the thermocouple mounting system and the thermoelectric module restraints. The conclusion of the 543,000 mile test also pointed the way for an upgrading to heavy duty hose or flex connections for the internal coolant connections for the TEG, and consideration of a separate lower temperature cooling loop with its own radiator. Fuel savings of up to $750 per year and a three to five year payback are believed to be possible with the 5 % efficiency modules. The economics are expected to improve considerably to approach a two year payback when the 5 kW to 10 kW generators make it to the market in a few years with a higher efficiency (20%) thermoelectric module system called Quantum Wells, which are currently under development by Hi-Z. Ultimately, as automation takes over to reduce material and labor costs in the high volume production of QW modules, a one year payback for the 5 kW to10 kW generator appears possible. This was one of the stated goals at the beginning of the project. At some future point in time, with the DTTEG becoming standard equipment on all trucks and automobiles, fuel savings from the 25% conversion of exhaust heat to useable electricity nationwide equates to a 10% reduction in the 12 to 15 million barrels per day of

  15. 2003 Diesel Engine Emissions Reduction (DEER) Conference Presentations |

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

    Department of Energy 3 Diesel Engine Emissions Reduction (DEER) Conference Presentations 2003 Diesel Engine Emissions Reduction (DEER) Conference Presentations August 24-28, 2003 Newport, Rhode Island The following documents are available as Adobe Acrobat PDFs. Download Adobe Reader. Plenary Session: A View from the Bridge Session 6: Environmentally Concerned Public Sector Organization Panel Session 1: Emerging Diesel Technologies Session 7: Combustion and HCCI Regimes Session 2: Fuels and

  16. 2005 Diesel Engine Emissions Reduction (DEER) Conference Presentations |

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

    Department of Energy 5 Diesel Engine Emissions Reduction (DEER) Conference Presentations 2005 Diesel Engine Emissions Reduction (DEER) Conference Presentations August 21-25, 2005 Chicago, Illinois The following documents are available as Adobe Acrobat PDFs. Download Adobe Reader. Plenary Session: A View from the Bridge Technical Session 4: Emission Control Technologies, Part 1 Technical Session 1: Advanced Combustion Technologies Part 1 Poster Session 2: Light-Duty Diesels and Emission

  17. Optimization of Advanced Diesel Engine Combustion Strategies | Department

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

    of Energy 1 DOE Hydrogen and Fuel Cells Program, and Vehicle Technologies Program Annual Merit Review and Peer Evaluation ace020_reitz_2011_o.pdf (786.77 KB) More Documents & Publications Optimization of Advanced Diesel Engine Combustion Strategies Optimization of Advanced Diesel Engine Combustion Strategies Use of Low Cetane Fuel to Enable Low Temperature Combustion

  18. Integration of Diesel Engine Technology to Meet US EPA 2010 Emissions...

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

    the 2007 Diesel Engine-Efficiency & Emissions Research Conference (DEER 2007). 13-16 ... Multicylinder Diesel Engine for Low Temperature Combustion Operation Development of ...

  19. Active Diesel Emission Control Technology for Sub-50 HP Engines...

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

    Sub-50 HP Engines with Low Exhaust Temperature Profiles Active Diesel Emission Control Technology for Sub-50 HP Engines with Low Exhaust Temperature Profiles A new type of emission ...

  20. Optimization of Engine-out Emissions from a Diesel Engine to...

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

    from a Diesel Engine to Meet Tier 2 Bin 5 Emission Limits Drastic reduction of engine-out emissions and complicated aftertreatment system comprising of oxidation catalyst, ...

  1. Modeling pollution formation in diesel engines

    SciTech Connect (OSTI)

    Brown, N.

    1997-12-31

    Modeling combustion under conditions that prevail in Diesel engine presents a great challenge. Lawrence Berkeley National Laboratory has invested Laboratory Directed Research and Development Funds to accelerate progress in this area. Research has been concerned with building a chemical mechanism to interface with a high fidelity fluid code to describe aspects of Diesel combustion. The complexity of these models requires implementation on massively parallel machines. The author will describe his efforts concerned with building such a complex mechanism. He begins with C and CO{sub 2} chemistry and adds sequentially higher hydrocarbon chemistry, aromatic production chemistry, soot chemistry, and chemistry describing NO{sub x} production. The metrics against which this chemistry is evaluated are flame velocities, induction times, ignition delay times, flammability limits, flame structure measurements, and light scattering. He assembles a set of elementary reactions, kinetic rate coefficients, and thermochemistry. He modifies existing Sandia codes to be able to investigate the behavior of the mechanism in well-stirred reactors, plug flow reactors, and one-dimensional flames. The modified combustion code with a chemical mechanism at the appropriate level of complexity is then interfaced with the high fidelity fluids code. The fluids code is distinguished by its ability to solve the requisite partial differential equations with adaptively refined grids necessary to describe the strong variation in spatial scales in combustion.

  2. Starting low compression ratio rotary Wankel diesel engine

    SciTech Connect (OSTI)

    Kamo, R.; Yamada, T.Y.; Hamada, Y.

    1987-01-01

    The single stage rotary Wankel engine is difficult to convert into a diesel version having an adequate compression ratio and a compatible combustion chamber configuration. Past efforts in designing a rotary-type Wankel diesel engine resorted to a two-stage design. Complexity, size, weight, cost and performance penalties were some of the drawbacks of the two-stage Wankel-type diesel designs. This paper presents an approach to a single stage low compression ratio Wankel-type rotary engine. Cold starting of a low compression ratio single stage diesel Wankel becomes the key problem. It was demonstrated that the low compression single stage diesel Wankel type rotary engine can satisfactorily be cold started with a properly designed combustion chamber in the rotor and a variable heat input combustion aid.

  3. Dynamic behaviour of a turbocharged diesel engine

    SciTech Connect (OSTI)

    Backhouse, R.; Winterbone, D.E.

    1986-01-01

    The transient behaviour of torque and smoke produced by a turbocharged diesel engine has been measured by frequency response methods, with a sinusoidal peturbation applied to the fuel. A dynamic torque parameter (dmep) has been introduced and the response of this to changes in speed and load can be separated. The dmep also enables the delay associated with torque production to be obtained: this is compared to the widely accepted values. The results have also been analysed to show the relationship between air-fuel ratio and smoke produced during a transient. The conclusion is that the production of smoke under dynamic condition behaves similarly to that under steady running but that it is more dependent on the initial load (air-fuel ratio) level.

  4. Dual fuel combustion in a turbocharged diesel engine

    SciTech Connect (OSTI)

    Few, P.C.; Newlyn, H.A.

    1987-01-01

    The modification of a turbocharged diesel engine to a dual-fuel engine using methane as the supplementary fuel has been carried out. The effect of the gaseous fuel in a turbo-charged diesel engine has been investigated by means of a heat release study and a computer program already developed at Leicester Polytechnic. It is used in order to examine the rate of heat released under any operational condition.

  5. Diesel and Gasoline Engine Emissions: Characterization of Atmosphere

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

    Composition and Health Responses to Inhaled Emissions | Department of Energy and Gasoline Engine Emissions: Characterization of Atmosphere Composition and Health Responses to Inhaled Emissions Diesel and Gasoline Engine Emissions: Characterization of Atmosphere Composition and Health Responses to Inhaled Emissions 2005 Diesel Engine Emissions Reduction (DEER) Conference Presentations and Posters 2005_deer_mcdonald.pdf (542.75 KB) More Documents & Publications The Effect of Changes in

  6. Thermodynamic Systems for Tier 2 Bin 2 Diesel Engines | Department of

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

    Energy Systems for Tier 2 Bin 2 Diesel Engines Thermodynamic Systems for Tier 2 Bin 2 Diesel Engines Discusses engine technology enablers that help achieve overall system integration effectively deer12_suresh.pdf (986.08 KB) More Documents & Publications Cummins Next Generation Tier 2, Bin 2 Light Truck Diesel engine Cummins/DOE Light Truck Diesel Engine Progress Report Cummins' Next Generation Tier 2, Bin 2 Light Truck Diesel Engine

  7. Diesel Engines: What Role Can They Play in an Emissions-Constrained World?

    Broader source: Energy.gov [DOE]

    2004 Diesel Engine Emissions Reduction (DEER) Conference Presentation; California Air Resources Board

  8. Nano Catalysts for Diesel Engine Emission Remediation

    SciTech Connect (OSTI)

    Narula, Chaitanya Kumar; Yang, Xiaofan; Debusk, Melanie Moses; Mullins, David R; Mahurin, Shannon Mark; Wu, Zili

    2012-06-01

    The objective of this project was to develop durable zeolite nanocatalysts with broader operating temperature windows to treat diesel engine emissions to enable diesel engine based equipment and vehicles to meet future regulatory requirements. A second objective was to improve hydrothermal durability of zeolite catalysts to at least 675 C. The results presented in this report show that we have successfully achieved both objectives. Since it is accepted that the first step in NO{sub x} conversion under SCR (selective catalytic reduction) conditions involves NO oxidation to NO{sub 2}, we reasoned that catalyst modification that can enhance NO oxidation at low-temperatures should facilitate NO{sub x} reduction at low temperatures. Considering that Cu-ZSM-5 is a more efficient catalyst than Fe-ZSM-5 at low-temperature, we chose to modify Cu-ZSM-5. It is important to point out that the poor low-temperature efficiency of Fe-ZSM-5 has been shown to be due to selective absorption of NH{sub 3} at low-temperatures rather than poor NO oxidation activity. In view of this, we also reasoned that an increased electron density on copper in Cu-ZSM-5 would inhibit any bonding with NH{sub 3} at low-temperatures. In addition to modified Cu-ZSM-5, we synthesized a series of new heterobimetallic zeolites, by incorporating a secondary metal cation M (Sc{sup 3+}, Fe{sup 3+}, In{sup 3+}, and La{sup 3+}) in Cu exchanged ZSM-5, zeolite-beta, and SSZ-13 zeolites under carefully controlled experimental conditions. Characterization by diffuse-reflectance ultra-violet-visible spectroscopy (UV-Vis), X-ray powder diffraction (XRD), extended X-ray absorption fine structure spectroscopy (EXAFS) and electron paramagnetic resonance spectroscopy (EPR) does not permit conclusive structural determination but supports the proposal that M{sup 3+} has been incorporated in the vicinity of Cu(II). The protocols for degreening catalysts, testing under various operating conditions, and accelerated aging

  9. Technical Challenges and Opportunities Light-Duty Diesel Engines in North

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

    America | Department of Energy Challenges and Opportunities Light-Duty Diesel Engines in North America Technical Challenges and Opportunities Light-Duty Diesel Engines in North America 2005 Diesel Engine Emissions Reduction (DEER) Conference Presentations and Posters 2005_deer_pinson.pdf (598.44 KB) More Documents & Publications Light-Duty Diesel Market Potential in North America Diesel Technology - Challenges & Opportunities for North America Comparison of Conventional Diesel and

  10. The Diesel Engine Powering Light-Duty Vehicles: Today and Tomorrow |

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

    Department of Energy The Diesel Engine Powering Light-Duty Vehicles: Today and Tomorrow The Diesel Engine Powering Light-Duty Vehicles: Today and Tomorrow 2004 Diesel Engine Emissions Reduction (DEER) Conference Presentation: Volkwagen AG, Wolfsburg, Germany 2004_deer_schindler.pdf (951.51 KB) More Documents & Publications Accelerating Light-Duty Diesel Sales in the U.S. Market Marketing Light-Duty Diesels to U.S. Consumers Clean Diesel: The Progress, The Message, The Opportunity

  11. Future Breathing System Requirements for Clean Diesel Engines

    Broader source: Energy.gov [DOE]

    Poster presentation at the 2007 Diesel Engine-Efficiency & Emissions Research Conference (DEER 2007). 13-16 August, 2007, Detroit, Michigan. Sponsored by the U.S. Department of Energy's (DOE) Office of FreedomCAR and Vehicle Technologies (OFCVT).

  12. Diesel Engine Strategy & North American Market Challenges, Technology and Growth

    Broader source: Energy.gov [DOE]

    Presentation given at the 2007 Diesel Engine-Efficiency & Emissions Research Conference (DEER 2007). 13-16 August, 2007, Detroit, Michigan. Sponsored by the U.S. Department of Energy's (DOE) Office of FreedomCAR and Vehicle Technologies (OFCVT).

  13. Engine Materials for Clean Diesel Technology: An Overview

    Broader source: Energy.gov [DOE]

    Presentation given at the 2007 Diesel Engine-Efficiency & Emissions Research Conference (DEER 2007). 13-16 August, 2007, Detroit, Michigan. Sponsored by the U.S. Department of Energy's (DOE) Office of FreedomCAR and Vehicle Technologies (OFCVT).

  14. Impact of Real Field Diesel Quality Variability on Engine Emissions...

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

    A matrix of 10 diesel fuels was prepared and tested to establish an optimized ECU setting and a compensating algorithm for the engine. p-07hermitte.pdf (1.04 MB) More Documents & ...

  15. French perspective on diesel engines & emissions | Department...

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

    for Diesel Emission Control: Euruopean Experience and Worldwide Perspectives Performance and durability of PSA Peugeot Citroen's DPF System on a Taxi Fleet in the Paris Area

  16. Recent Diesel Engine Emission Mitigation Activities of the Maritime

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

    Administration Energy Technologies Program | Department of Energy Diesel Engine Emission Mitigation Activities of the Maritime Administration Energy Technologies Program Recent Diesel Engine Emission Mitigation Activities of the Maritime Administration Energy Technologies Program 2003 DEER Conference Presentation: Maritime Administration 2003_deer_gore.pdf (759.73 KB) More Documents & Publications The Maritime Administration's Energy and Emissions Program - Part 2 Reduction of Emissions

  17. 2007 Diesel Engine-Efficiency and Emissions Research (DEER) Conference

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

    Presentations | Department of Energy 7 Diesel Engine-Efficiency and Emissions Research (DEER) Conference Presentations 2007 Diesel Engine-Efficiency and Emissions Research (DEER) Conference Presentations August 13-16, 2007 Detroit, Michigan The following documents are available as Adobe Acrobat PDFs. Download Adobe Reader. Plenary Session: A View from the Bridge Tuesday Dinner Monday Lunch Concurrent Technical Session 4 : Emission Control Technologies, Part 2 Technical Session 1: Advanced

  18. 2008 Diesel Engine-Efficiency and Emissions Research (DEER) Conference

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

    Presentations | Department of Energy Diesel Engine-Efficiency and Emissions Research (DEER) Conference Presentations 2008 Diesel Engine-Efficiency and Emissions Research (DEER) Conference Presentations August 4-7, 2008 Dearborn, Michigan The following documents are available as Adobe Acrobat PDFs. Download Adobe Reader. Plenary Session: A View from the Bridge Concurrent Technical Session 4: Emission Control Technologies, Part 2 Lunch: Sponsored by Caterpillar, Inc. Concurrent Technical

  19. Multicylinder Diesel Engine for Low Temperature Combustion Operation |

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

    Department of Energy for Low Temperature Combustion Operation Multicylinder Diesel Engine for Low Temperature Combustion Operation Fuel injection strategies to extend low temperature combustion temperatures to yield low NOx at higher loads and better efficiency over the speed-load range deer08_deojeda.pdf (1.22 MB) More Documents & Publications Low Temperature Combustion Demonstrator for High Efficiency Clean Combustion Multicylinder Diesel Engine Design for HCCI Operation Impact of

  20. In Vitro Genotoxicity of Gasoline and Diesel Engine Vehicle Exhaust

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

    Particulate and Semi-Volatile Organic Compound Materials | Department of Energy Gasoline and Diesel Engine Vehicle Exhaust Particulate and Semi-Volatile Organic Compound Materials In Vitro Genotoxicity of Gasoline and Diesel Engine Vehicle Exhaust Particulate and Semi-Volatile Organic Compound Materials 2002 DEER Conference Presentation: U.S. Centers for Disease Control and Prevention - National Institute for Occupational Safety and Health 2002_deer_wallace.pdf (114.23 KB) More Documents

  1. Investigation of Bio-Diesel Fueled Engines under Low-Temperature...

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

    More Documents & Publications Heavy-Duty Low-Temperature and Diesel Combustion & Heavy-Duty ... Computational Fluid Dynamics Modeling of Diesel Engine Combustion and Emissions

  2. Cummins/DOE Light Truck Clean Diesel Engine Progress Report | Department of

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

    Energy Clean Diesel Engine Progress Report Cummins/DOE Light Truck Clean Diesel Engine Progress Report 2003 DEER Conference Presentation: Cummins Inc. 2003_deer_stang.pdf (168.78 KB) More Documents & Publications Cummins Light Truck Clean Diesel Cummins/DOE Light Truck Diesel Engine Progress Report Cummins Work Toward Successful Introduction of Light-Duty Clean Diesel Engines in US

  3. An Experimental Investigation of Low Octane Gasoline in Diesel Engines |

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

    Department of Energy Low Octane Gasoline in Diesel Engines An Experimental Investigation of Low Octane Gasoline in Diesel Engines Presentation given at the 16th Directions in Engine-Efficiency and Emissions Research (DEER) Conference in Detroit, MI, September 27-30, 2010. deer10_ciatti.pdf (1.34 MB) More Documents & Publications Use of Low Cetane Fuel to Enable Low Temperature Combustion High-Efficiency, Ultra-Low Emission Combustion in a Heavy-Duty Engine via Fuel Reactivity Control

  4. High Efficiency Clean Combustion Engine Designs for Gasoline and Diesel

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

    Engines | Department of Energy 2009 DOE Hydrogen Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting, May 18-22, 2009 -- Washington D.C. ace_35_patton.pdf (970.31 KB) More Documents & Publications High Efficiency Clean Combustion Engine Designs for Gasoline and Diesel Engines Development of High-Efficiency Clean Combustion Engines Designs for SI and CI Engines Expanding Robust HCCI Operation (Delphi CRADA)

  5. Optimization of Engine-out Emissions from a Diesel Engine to Meet Tier 2

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

    Bin 5 Emission Limits | Department of Energy Engine-out Emissions from a Diesel Engine to Meet Tier 2 Bin 5 Emission Limits Optimization of Engine-out Emissions from a Diesel Engine to Meet Tier 2 Bin 5 Emission Limits Drastic reduction of engine-out emissions and complicated aftertreatment system comprising of oxidation catalyst, particulate filter, and DeNOx catalyst are implemented to meet Tier 2 Bin 5 limits for U.S. market diesel engines. deer08_yoon.pdf (1.2 MB) More Documents &

  6. The development of a prechamber diesel engine family

    SciTech Connect (OSTI)

    Filtri, G.; Morello, L.; Stroppiana, B.

    1989-01-01

    The development of a new family of prechamber diesel engines, based on a technological commonalty with the gasoline engines is reported. The range of diesel engines, all of them four-cylinder-in line, consist of 3 displacements: 1365cc - 1697cc - 1930cc either naturally aspirated or turbocharged. Mention is also made of their most significant technical innovations about their architecture and combustion chambers, and the main components such as block cylinder, head, crankshaft, connecting rods, pistons, timing gear and injection pump control, intake and exhaust manifolds.

  7. Mixture Formation in a Light-Duty Diesel Engine | Department of Energy

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

    Mixture Formation in a Light-Duty Diesel Engine Mixture Formation in a Light-Duty Diesel Engine Presents quantitative measurements of evolution of in-cylinder equivalence ratio distributions in a light-duty engine where wall interactions and strong swirl are significant deer12_miles.pdf (4.42 MB) More Documents & Publications Low-Temperature Automotive Diesel Combustion Light-Duty Diesel Combustion Vehicle Technologies Office Merit Review 2014: Light-Duty Diesel Combuston

  8. Dual fuel control of a high speed turbocharged diesel engine

    SciTech Connect (OSTI)

    Few, P.C.; Sardari, P.

    1987-01-01

    The modification of a Ford 7600 turbocharged diesel engine to a dual fuel engine using methane as the supplementary fuel has been carried out. The paper describes the preliminary work of dual fuel control. Two systems are examined and their behaviour is presented.

  9. Novel injector techniques for coal-fueled diesel engines

    SciTech Connect (OSTI)

    Badgley, P.R.

    1992-09-01

    This report, entitled Novel Injector Techniques for Coal-Fueled Diesel Engines,'' describes the progress and findings of a research program aimed at development of a dry coal powder fuel injector in conjunction with the Thermal Ignition Combustion System (TICS) concept to achieve autoignition of dry powdered coal in a single-cylinder high speed diesel engine. The basic program consisted of concept selection, analysis and design, bench testing and single cylinder engine testing. The coal injector concept which was selected was a one moving part dry-coal-powder injector utilizing air blast injection. Adiabatics has had previous experience running high speed diesel engines on both direct injected directed coal-water-slurry (CWS) fuel and also with dry coal powder aspirated into the intake air. The Thermal Ignition Combustion System successfully ignited these fuels at all speeds and loads without requiring auxiliary ignition energy such as pilot diesel fuel, heated intake air or glow or spark plugs. Based upon this prior experience, it was shown that the highest efficiency and fastest combustion was with the dry coal, but that the use of aspiration of coal resulted in excessive coal migration into the engine lubrication system. Based upon a desire of DOE to utilize a more modern test engine, the previous naturally-aspirated Caterpillar model 1Y73 single cylinder engine was replaced with a turbocharged (by use of shop air compressor and back pressure control valve) single cylinder version of the Cummins model 855 engine.

  10. Cutting NOx from Diesel Engines with Membrane-Generated Nitrogen-Enriched

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

    Air | Department of Energy Cutting NOx from Diesel Engines with Membrane-Generated Nitrogen-Enriched Air Cutting NOx from Diesel Engines with Membrane-Generated Nitrogen-Enriched Air 2005 Diesel Engine Emissions Reduction (DEER) Conference Presentations and Posters 2005_deer_bowser.pdf (615.73 KB) More Documents & Publications Membrane Technology Workshop Advanced Reciprocating Engine Systems (ARES) R&D - Presentation by Argonne National Laboratory, June 2011 Diesel Engine

  11. Capture of Heat Energy from Diesel Engine Exhaust

    SciTech Connect (OSTI)

    Chuen-Sen Lin

    2008-12-31

    Diesel generators produce waste heat as well as electrical power. About one-third of the fuel energy is released from the exhaust manifolds of the diesel engines and normally is not captured for useful applications. This project studied different waste heat applications that may effectively use the heat released from exhaust of Alaskan village diesel generators, selected the most desirable application, designed and fabricated a prototype for performance measurements, and evaluated the feasibility and economic impact of the selected application. Exhaust flow rate, composition, and temperature may affect the heat recovery system design and the amount of heat that is recoverable. In comparison with the other two parameters, the effect of exhaust composition may be less important due to the large air/fuel ratio for diesel engines. This project also compared heat content and qualities (i.e., temperatures) of exhaust for three types of fuel: conventional diesel, a synthetic diesel, and conventional diesel with a small amount of hydrogen. Another task of this project was the development of a computer-aided design tool for the economic analysis of selected exhaust heat recovery applications to any Alaskan village diesel generator set. The exhaust heat recovery application selected from this study was for heating. An exhaust heat recovery system was fabricated, and 350 hours of testing was conducted. Based on testing data, the exhaust heat recovery heating system showed insignificant effects on engine performance and maintenance requirements. From measurements, it was determined that the amount of heat recovered from the system was about 50% of the heat energy contained in the exhaust (heat contained in exhaust was evaluated based on environment temperature). The estimated payback time for 100% use of recovered heat would be less than 3 years at a fuel price of $3.50 per gallon, an interest rate of 10%, and an engine operation of 8 hours per day. Based on experimental data

  12. Emission Characteristics of a Diesel Engine Operating with In-Cylinder Gasoline and Diesel Fuel Blending

    SciTech Connect (OSTI)

    Prikhodko, Vitaly Y; Curran, Scott; Barone, Teresa L; Lewis Sr, Samuel Arthur; Storey, John Morse; Cho, Kukwon; Wagner, Robert M; Parks, II, James E

    2010-01-01

    Advanced combustion regimes such as homogeneous charge compression ignition (HCCI) and premixed charge compression ignition (PCCI) offer benefits of reduced nitrogen oxides (NOx) and particulate matter (PM) emissions. However, these combustion strategies often generate higher carbon monoxide (CO) and hydrocarbon (HC) emissions. In addition, aldehydes and ketone emissions can increase in these modes. In this study, the engine-out emissions of a compression-ignition engine operating in a fuel reactivity- controlled PCCI combustion mode using in-cylinder blending of gasoline and diesel fuel have been characterized. The work was performed on a 1.9-liter, 4-cylinder diesel engine outfitted with a port fuel injection system to deliver gasoline to the engine. The engine was operated at 2300 rpm and 4.2 bar brake mean effective pressure (BMEP) with the ratio of gasoline to diesel fuel that gave the highest engine efficiency and lowest emissions. Engine-out emissions for aldehydes, ketones and PM were compared with emissions from conventional diesel combustion. Sampling and analysis was carried out following micro-tunnel dilution of the exhaust. Particle geometric mean diameter, number-size distribution, and total number concentration were measured by a scanning mobility particle sizer (SMPS). For the particle mass measurements, samples were collected on Teflon-coated quartz-fiber filters and analyzed gravimetrically. Gaseous aldehydes and ketones were sampled using dinitrophenylhydrazine-coated solid phase extraction cartridges and the extracts were analyzed by liquid chromatography/mass spectrometry (LC/MS). In addition, emissions after a diesel oxidation catalyst (DOC) were also measured to investigate the destruction of CO, HC and formaldehydes by the catalyst.

  13. Prediction of transient exhaust soot for a turbocharged diesel engine

    SciTech Connect (OSTI)

    Xiaoping, B.; Shu, H.

    1995-12-31

    A generalized computer model for prediction of transient exhaust soot and response of turbocharged diesel engines is developed. It includes detailed thermodynamic and dynamic processes. This model utilizes a multi-zone combustion submodel that emphasizes simple and economical calculations for combustion behavior and zonal soot, so overall transient exhaust soot can be predicted. This model is applied to a turbocharged diesel engine. The steady state exhaust soot and performance are calculated and validated, and on the basis, the exhaust soot and response under three classes of transient operating conditions are predicted. The parametric study is carried out by using this model. The effects of valve overlap period, exhaust manifold volume, turbocharger inertia and ambient pressure are predicted. Applications of this model have proved that it is a convenient analytical tool in the study for turbocharged diesel engines. 18 refs., 14 figs., 2 tabs.

  14. Rapid engine test to measure injector fouling in diesel engines using vegetable oil fuels

    SciTech Connect (OSTI)

    Korus, R.A.; Jaiduk, J.; Peterson, C.L.

    1985-11-01

    Short engine tests were used to determine the rate of carbon deposition on direct injection diesel nozzles. Winter rape, high-oleic and high-linoleic safflower blends with 50% diesel were tested for carbon deposit and compared to that with D-2 Diesel Control Fuel. Deposits were greatest with the most unsaturated fuel, high-linoleic safflower, and least with winter rape. All vegetable oil blends developed power similar to diesel fueled engines with a 6 to 8% greater fuel consumption. 8 references.

  15. Engine-External HC-Dosing for Regeneration of Diesel Particulate...

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

    Engine-External HC-Dosing for Regeneration of Diesel Particulate Filters for Heavy Duty and NRMM According to Annex XXVII StVZO Engine-External HC-Dosing for Regeneration of Diesel ...

  16. Diesel Engines: What Role Can They Play in an Emissions-Constrained...

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

    What Role Can They Play in an Emissions-Constrained World? Diesel Engines: What Role Can They Play in an Emissions-Constrained World? 2004 Diesel Engine Emissions Reduction (DEER) ...

  17. Light-Duty Diesel EngineTechnology to Meet Future Emissions and...

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

    of the U.S. Market Light-Duty Diesel EngineTechnology to Meet Future Emissions and Performance Requirements of the U.S. Market 2004 Diesel Engine Emissions Reduction (DEER) ...

  18. Engine and Reactor Evaluations of HC-SCR for Diesel NOx Reduction...

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

    Engine and Reactor Evaluations of HC-SCR for Diesel NOx Reduction Engine and Reactor Evaluations of HC-SCR for Diesel NOx Reduction Focus is the heavy duty, US dynamometer ...

  19. Cummins Next Generation Tier 2, Bin 2 Light Truck Diesel engine...

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

    Next Generation Tier 2, Bin 2 Light Truck Diesel engine Cummins Next Generation Tier 2, Bin 2 Light Truck Diesel engine Discusses plan, baselining, and modeling, for new light ...

  20. Conversion of a diesel engine to a spark ignition natural gas engine

    SciTech Connect (OSTI)

    1996-09-01

    Requirements for alternatives to diesel-fueled vehicles are developing, particularly in urban centers not in compliance with mandated air quality standards. An operator of fleets of diesel- powered vehicles may be forced to either purchase new vehicles or equip some of the existing fleets with engines designed or modified to run on alternative fuels. In converting existing vehicles, the operator can either replace the existing engine or modify it to burn an alternative fuel. Work described in this report addresses the problem of modifying an existing diesel engine to operate on natural gas. Tecogen has developed a technique for converting turbocharged automotive diesel engines to operate as dedicated spark-ignition engines with natural gas fuel. The engine cycle is converted to a more-complete-expansion cycle in which the expansion ratio of the original engine is unchanged while the effective compression ratio is lowered, so that engine detonation is avoided. The converted natural gas engine, with an expansion ratio higher than in conventional spark- ignition natural gas engines, offers thermal efficiency at wide-open- throttle conditions comparable to its diesel counterpart. This allows field conversion of existing engines. Low exhaust emissions can be achieved when the engine is operated with precise control of the fuel air mixture at stoichiometry with a 3-way catalyst. A Navistar DTA- 466 diesel engine with an expansion ratio of 16.5 to 1 was converted in this way, modifying the cam profiles, increasing the turbocharger boost pressure, incorporating an aftercooler if not already present, and adding a spark-ignition system, natural gas fuel management system, throttle body for load control, and an electronic engine control system. The proof-of-concept engine achieved a power level comparable to that of the diesel engine without detonation. A conversion system was developed for the Navistar DT 466 engine. NOx emissions of 1.5 g/bhp-h have been obtained.

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

    Broader source: Energy.gov [DOE]

    An advanced engine design that is 15 percent more efficient than diesel, pollution free, and uses any fuel.

  2. Simultaneously Low-Engine-Out NOx and PM with Highly Diluted Diesel

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

    Combustuion | Department of Energy Simultaneously Low-Engine-Out NOx and PM with Highly Diluted Diesel Combustuion Simultaneously Low-Engine-Out NOx and PM with Highly Diluted Diesel Combustuion 2002 DEER Conference Presentation: Oak Ridge National Laboratory 2002_deer_wagner.pdf (771.32 KB) More Documents & Publications Exploring Advanced Combustion Regimes for Efficiency and Emissions Achieving High-Effiency Clean Ccombustion in Diesel Engines Light-Duty Diesel EngineTechnology to Meet

  3. Glow Plug Integrated Piezo-Ceramic Combustion Sensor for Diesel Engines |

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

    Department of Energy Glow Plug Integrated Piezo-Ceramic Combustion Sensor for Diesel Engines Glow Plug Integrated Piezo-Ceramic Combustion Sensor for Diesel Engines 2005 Diesel Engine Emissions Reduction (DEER) Conference Presentations and Posters 2005_deer_troy.pdf (464.48 KB) More Documents & Publications An Innovative Pressure Sensor Glow Plug Offers Improved Diesel Engine Closed-loop Control Vehicle Technologies Office: 2013 Propulsion Materials R&D Annual Progress Report

  4. Physical properties of bio-diesel & Implications for use of bio-diesel in diesel engines

    SciTech Connect (OSTI)

    Chakravarthy, Veerathu K; McFarlane, Joanna; Daw, C Stuart; Ra, Youngchul; Griffin, Jelani K

    2008-01-01

    In this study we identify components of a typical biodiesel fuel and estimate both their individual and mixed thermo-physical and transport properties. We then use the estimated mixture properties in computational simulations to gauge the extent to which combustion is modified when biodiesel is substituted for conventional diesel fuel. Our simulation studies included both regular diesel combustion (DI) and premixed charge compression ignition (PCCI). Preliminary results indicate that biodiesel ignition is significantly delayed due to slower liquid evaporation, with the effects being more pronounced for DI than PCCI. The lower vapor pressure and higher liquid heat capacity of biodiesel are two key contributors to this slower rate of evaporation. Other physical properties are more similar between the two fuels, and their impacts are not clearly evident in the present study. Future studies of diesel combustion sensitivity to both physical and chemical properties of biodiesel are suggested.

  5. A Comparison of Combustion and Emissions of Diesel Fuels and Oxygenated Fuels in a Modern DI Diesel Engine

    Broader source: Energy.gov [DOE]

    A single-cylinder engine was used to study how selected oxygenated fuels affect combustion and emissions in a modern diesel engine during conventional combustion and low-temperature combustion (LTC).

  6. Creation and Testing of the ACES Heavy Heavy-Duty Diesel Engine Test

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

    Schedule for Representative Measurement of Heavy-Duty Engine Emissions | Department of Energy Creation and Testing of the ACES Heavy Heavy-Duty Diesel Engine Test Schedule for Representative Measurement of Heavy-Duty Engine Emissions Creation and Testing of the ACES Heavy Heavy-Duty Diesel Engine Test Schedule for Representative Measurement of Heavy-Duty Engine Emissions Poster presentation at the 2007 Diesel Engine-Efficiency & Emissions Research Conference (DEER 2007). 13-16 August,

  7. Diesel engine emissions reduction by multiple injections having increasing pressure

    SciTech Connect (OSTI)

    Reitz, Rolf D.; Thiel, Matthew P.

    2003-01-01

    Multiple fuel charges are injected into a diesel engine combustion chamber during a combustion cycle, and each charge after the first has successively greater injection pressure (a higher injection rate) than the prior charge. This injection scheme results in reduced emissions, particularly particulate emissions, and can be implemented by modifying existing injection system hardware. Further enhancements in emissions reduction and engine performance can be obtained by using known measures in conjunction with the invention, such as Exhaust Gas Recirculation (EGR).

  8. Hydrogen as a Supplemental Fuel in Diesel Engines | Department of Energy

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

    as a Supplemental Fuel in Diesel Engines Hydrogen as a Supplemental Fuel in Diesel Engines Poster presentation from the 2007 Diesel Engine-Efficiency & Emissions Research Conference (DEER 2007). 13-16 August, 2007, Detroit, Michigan. Sponsored by the U.S. Department of Energy's (DOE) Office of FreedomCAR and Vehicle Technologies (OFCVT). deer07_bika.pdf (177.65 KB) More Documents & Publications Fuels of the Future for Cars and Trucks Renewable Diesel Vehicle Technologies Office:

  9. Effect of Exhaust Gas Recirculation (EGR) on Diesel Engine Oil- Impact on Wear

    Broader source: Energy.gov [DOE]

    Results of completed study on the effect of four exhaust gas recirculation levels on diesel engine oil during standard test with an API Cummins M-11 engine.

  10. Effect of EGR contamination of diesel engine oil on wear.

    SciTech Connect (OSTI)

    Ajayi, O. O.; Erdemir, A.; Fenske, G. R.; Aldajah, S.; Goldblatt, I. L.; Energy Systems; United Arab Emirates Univ.; BP-Global Lubricants Technology

    2007-09-01

    Exhaust gas recirculation (EGR) is one of the effective means to reduce the NO{sub X} emission from diesel engines. Returning exhaust product to the diesel engine combustion chamber accelerated the degradation of the lubricant engine oil, primarily by increasing the total acid number (TAN) as well as the soot content and, consequently, the viscosity. These oil degradation mechanisms were observed in engine oil exposed to EGR during a standard Cummins M-l 1 diesel engine test. Four-ball wear tests with M-50 balls showed that, although the used oils slightly decrease the friction coefficients, they increased the ball wear by two orders of magnitude when compared to tests with clean oil. Wear occurred primarily by an abrasive mechanism, but in oil with the highest soot loading of 12%, scuffing and soot particle embedment were also observed. Laboratory wear tests showed a linear correlation with the TAN, while the crosshead wear during the engine test was proportional to the soot content.

  11. On-Board Engine Exhaust Particulate Matter Sensor for HCCI and Conventional Diesel Engines

    SciTech Connect (OSTI)

    Hall, Matt; Matthews, Ron

    2011-09-30

    The goal of the research was to refine and complete development of an on-board particulate matter (PM) sensor for diesel, DISI, and HCCI engines, bringing it to a point where it could be commercialized and marketed.

  12. Regulation of Emissions from Stationary Diesel Engines (released in AEO2007)

    Reports and Publications (EIA)

    2007-01-01

    On July 11, 2006, the Environmental Protection Agency (EPA) issued regulations covering emissions from stationary diesel engines New Source Performance Standards that limit emissions of NOx, particulate matter, SO2, carbon monoxide, and hydrocarbons to the same levels required for nonroad diesel engines. The regulation affects new, modified, and reconstructed diesel engines. Beginning with model year 2007, engine manufacturers must specify that new engines less than 3,000 horsepower meet the same emissions standard as nonroad diesel engines. For engines greater than 3,000 horsepower, the standard will be fully effective in 2011. Stationary diesel engine fuel will also be subject to the same standard as nonroad diesel engine fuel, which reduces the sulfur content of the fuel to 500 parts per million by mid-2007 and 15 parts per million by mid-2010.

  13. An experimental investigation of low octane gasoline in diesel engines.

    SciTech Connect (OSTI)

    Ciatti, S. A.; Subramanian, S.

    2011-09-01

    Conventional combustion techniques struggle to meet the current emissions norms. In particular, oxides of nitrogen (NO{sub x}) and particulate matter (PM) emissions have limited the utilization of diesel fuel in compression ignition engines. Advance combustion concepts have proved the potential to combine fuel efficiency and improved emission performance. Low-temperature combustion (LTC) offers reduced NO{sub x} and PM emissions with comparable modern diesel engine efficiencies. The ability of premixed, low-temperature compression ignition to deliver low PM and NO{sub x} emissions is dependent on achieving optimal combustion phasing. Diesel operated LTC is limited by early knocking combustion, whereas conventional gasoline operated LTC is limited by misfiring. So the concept of using an unconventional fuel with the properties in between those two boundary fuels has been experimented in this paper. Low-octane (84 RON) gasoline has shown comparable diesel efficiencies with the lowest NO{sub x} emissions at reasonable high power densities (NO{sub x} emission was 1 g/kW h at 12 bar BMEP and 2750 rpm).

  14. Impacts of Biodiesel Fuel Blends Oil Dilution on Light-Duty Diesel Engine Operation

    SciTech Connect (OSTI)

    Thornton, M. J.; Alleman, T. L.; Luecke, J.; McCormick, R. L.

    2009-08-01

    Assesses oil dilution impacts on a diesel engine operating with a diesel particle filter, NOx storage, a selective catalytic reduction emission control system, and a soy-based 20% biodiesel fuel blend.

  15. Coal-fueled diesel technology development: Nozzle development for coal-fueled diesel engines

    SciTech Connect (OSTI)

    Johnson, R.N.; Lee, M.; White, R.A.

    1994-01-01

    Direct injection of a micronized coal water mixture fuel into the combustion chambers of a diesel engine requires atomizing an abrasive slurry fuel with accurately sized orifices. Five injector orifice materials were evaluated: diamond compacts, chemical vapor deposited diamond tubes, thermally stabilized diamond, tungsten carbide with cobalt binder, and tungsten carbide with nickel binder with brazed and mechanically mounted orifice inserts. Nozzle bodies were fabricated of Armco 17-4 precipitation hardening stainless steel and Stellite 6B in order to withstand cyclic injection pressures and elevated temperatures. Based on a total of approximately 200 cylinder hours of engine operation with coal water mixture fuel diamond compacts were chosen for the orifice material.

  16. Systems and methods for controlling diesel engine emissions

    DOE Patents [OSTI]

    Webb, Cynthia Chaffin; Weber, Phillip Anthony; Khair, Magdi K.

    2004-06-01

    Systems and methods for controlling diesel engine emissions, including, for example, oxides of nitrogen emissions, particulate matter emissions, and the like. The emission control system according to this invention is provided in the exhaust passageway of a diesel engine and includes a catalyst-based particulate filter; and first and second lean NO.sub.x trap systems coupled to the catalyst-based particulate filter. The first and second lean NO.sub.x trap systems are arranged in a parallel flow configuration with each other. Each of the first and second lean NO.sub.x trap systems include a carbon monoxide generating catalyst device, a sulfur trap device, a lean NO.sub.x device, a supplemental fuel injector device, and a plurality of flow diverter devices.

  17. SCR & DPF RETROFITS FOR MOBILE DIESEL ENGINES | Department of Energy

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

    & DPF RETROFITS FOR MOBILE DIESEL ENGINES SCR & DPF RETROFITS FOR MOBILE DIESEL ENGINES 2005 Diesel Engine Emissions Reduction (DEER) Conference Presentations and Posters 2005_deer_leprince.pdf (290.81 KB) More Documents & Publications Development of ADECS to Meet 2010 Emission Levels: Optimization of NOx, NH3 and Fuel Consumption Using High and Low Engine-Out NOx Calibrations Low Emissions Potential of EGR-SCR-DPF and Advanced Fuel Formulation - A Progress Report The Development and

  18. 2007-2009 USA Emission Solutions for Heavy-Duty Diesel Engines | Department

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

    of Energy -2009 USA Emission Solutions for Heavy-Duty Diesel Engines 2007-2009 USA Emission Solutions for Heavy-Duty Diesel Engines 2002 DEER Conference Presentation: Southwest Research Institute 2002_deer_leet.pdf (429.05 KB) More Documents & Publications Low Emisssions Potential of EGR-SCR-DPF and Advanced Fuel Formulations - A Progress Report State-of-the-Art and Emergin Truck Engine Technologies Variable Charge Motion for 2007-2010 Heavy Duty Diesel Engines

  19. Nanocatalysts for Diesel Engine Emissions Remediation | Department of

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

    venkatasubramanian1.pdf (1.13 MB) More Documents & Publications Nano-structures Thermoelectric Materals - Part 2 Recent Device Developments with Advanced Bulk Thermoelectric Materials at RTI Thermoelectric Developments for Vehicular Applications

    venkatasubramanian2.pdf (3.14 MB) More Documents & Publications Nano-structures Thermoelectric Materals - Part 1 Recent Device Developments with Advanced Bulk Thermoelectric Materials at RTI The 60% Efficient Diesel Engine: Probably, Possible,

  20. High-Load Partially Premixed Combustion in a Heavy-Duty Diesel Engine |

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

    Department of Energy High-Load Partially Premixed Combustion in a Heavy-Duty Diesel Engine High-Load Partially Premixed Combustion in a Heavy-Duty Diesel Engine 2005 Diesel Engine Emissions Reduction (DEER) Conference Presentations and Posters 2005_deer_johansson.pdf (1.48 MB) More Documents & Publications Experiments and Modeling of Two-Stage Combustion in Low-Emissions Diesel Engines High-Efficiency, Ultra-Low Emission Combustion in a Heavy-Duty Engine via Fuel Reactivity Control Path

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

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

    Department of Energy Driven Rankine Cycle for a Heavy Duty Diesel Engine Exhaust Heat Driven Rankine Cycle for a Heavy Duty Diesel Engine Presents progress to date and plans to develop a viable Rankine engine to harness useful brake power from wasted heat energy in heavy duty truck engine exhaust deer11_singh.pdf (2.07 MB) More Documents & Publications Increased Engine Efficiency via Advancements in Engine Combustion Systems Roadmapping Engine Technology for Post-2020 Heavy Duty Vehicles

  2. Dual fueling of a Caterpillar 3406 diesel engine

    SciTech Connect (OSTI)

    Bell, S.R.; Midkiff, K.C.; Doughty, G.; Brett, C.E.

    1996-05-01

    A Caterpillar 3406 turbocharged diesel engine was converted to operate in a dual-fuel mode and was evaluated for performance and emission characteristics for both diesel and natural gas operation. Full load power was achieved with dual fueling without knock. Similar fuel efficiencies were obtained with dual fueling a high loads, but efficiencies were lower for low loads. Bosch smoke numbers were reduced by over 50% with dual fueling for all cases investigated. NO{sub x} emissions were found to be lower at low loads and at high speeds under high load. CO emissions were significantly increased for dual fueling while CO{sub 2} concentrations in the exhaust were reduced for dual fueling.

  3. Oil Bypass Filter and Diesel Engine Idling Wear-Rate Evaluations |

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

    Department of Energy Bypass Filter and Diesel Engine Idling Wear-Rate Evaluations Oil Bypass Filter and Diesel Engine Idling Wear-Rate Evaluations 2005 Diesel Engine Emissions Reduction (DEER) Conference Presentations and Posters 2005_deer_zirker.pdf (247.36 KB) More Documents & Publications Demonstrated Petroleum Reduction Using Oil Bypass Filter Technology on Heavy and Light Vehicles Development of Partial Filter Technology for HDD Retrofit Comparing Emissions Benefits from Regulating

  4. The 60% Efficient Diesel Engine: Probably, Possible, Or Just a Fantasy? |

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

    Department of Energy The 60% Efficient Diesel Engine: Probably, Possible, Or Just a Fantasy? The 60% Efficient Diesel Engine: Probably, Possible, Or Just a Fantasy? 2005 Diesel Engine Emissions Reduction (DEER) Conference Presentations and Posters 2005_deer_fairbanks2.pdf (1.21 MB) More Documents & Publications DOE's Launch of High-Efficiency Thermiekectrics Projects Thermoelectric Developments for Vehicular Applications Solid-State Energy Conversion Overview

  5. The Impact of Lubricant on Emissions from a Medium-Duty Diesel Engine |

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

    Department of Energy on Emissions from a Medium-Duty Diesel Engine The Impact of Lubricant on Emissions from a Medium-Duty Diesel Engine 2002 DEER Conference Presentation: National Renewable Energy Lab 2002_deer_whitacre.pdf (355.38 KB) More Documents & Publications Lubricant Formulation and Consumption Effects on Diesel Exhaust Ash Emissions: Fuels for Advanced CIDI Engines and Fuel Cells: 2000 Annual Progress Report Vehicle Technologies Office: 2014 Fuel and Lubricant Technologies

  6. The Potential of Elelcltric Exhaust Gas Turbocharging for HD DIesel Engines

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

    | Department of Energy Elelcltric Exhaust Gas Turbocharging for HD DIesel Engines The Potential of Elelcltric Exhaust Gas Turbocharging for HD DIesel Engines 2005 Diesel Engine Emissions Reduction (DEER) Conference Presentations and Posters 2005_deer_millo.pdf (766.54 KB) More Documents & Publications Design & Development of e-TurboTM for SUV and Light Truck Applications Downspeeding a Heavy-Duty Pickup Truck with a Combined Supercharger and Turbocharger Boosting System to Improve

  7. Large Eddy Simulation (LES) Applied to LTC/Diesel/Hydrogen Engine

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

    Combustion Research | Department of Energy Large Eddy Simulation (LES) Applied to LTC/Diesel/Hydrogen Engine Combustion Research Large Eddy Simulation (LES) Applied to LTC/Diesel/Hydrogen Engine Combustion Research 2009 DOE Hydrogen Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting, May 18-22, 2009 -- Washington D.C. ace_07_oefelein.pdf (4.03 MB) More Documents & Publications Large Eddy Simulation (LES) Applied to Low-Temperature and Diesel Engine

  8. Impact of Real Field Diesel Quality Variability on Engine Emissions and

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

    Fuel Consumption Solutions for Onboard Optimisation | Department of Energy Real Field Diesel Quality Variability on Engine Emissions and Fuel Consumption Solutions for Onboard Optimisation Impact of Real Field Diesel Quality Variability on Engine Emissions and Fuel Consumption Solutions for Onboard Optimisation A matrix of 10 diesel fuels was prepared and tested to establish an optimized ECU setting and a compensating algorithm for the engine. p-07_hermitte.pdf (1.04 MB) More Documents &

  9. A Waste Heat Recovery System for Light Duty Diesel Engines

    SciTech Connect (OSTI)

    Briggs, Thomas E; Wagner, Robert M; Edwards, Kevin Dean; Curran, Scott; Nafziger, Eric J

    2010-01-01

    In order to achieve proposed fuel economy requirements, engines must make better use of the available fuel energy. Regardless of how efficient the engine is, there will still be a significant fraction of the fuel energy that is rejected in the exhaust and coolant streams. One viable technology for recovering this waste heat is an Organic Rankine Cycle. This cycle heats a working fluid using these heat streams and expands the fluid through a turbine to produce shaft power. The present work was the development of such a system applied to a light duty diesel engine. This lab demonstration was designed to maximize the peak brake thermal efficiency of the engine, and the combined system achieved an efficiency of 44.4%. The design of the system is discussed, as are the experimental performance results. The system potential at typical operating conditions was evaluated to determine the practicality of installing such a system in a vehicle.

  10. Systems engineering approach towards performance monitoring of emergency diesel generator

    SciTech Connect (OSTI)

    Ramli, Nurhayati Yong-kwan, Lee

    2014-02-12

    Systems engineering is an interdisciplinary approach and means to enable the realization of successful systems. In this study, systems engineering approach towards the performance monitoring of Emergency Diesel Generator (EDG) is presented. Performance monitoring is part and parcel of predictive maintenance where the systems and components conditions can be detected before they result into failures. In an effort to identify the proposal for addressing performance monitoring, the EDG boundary has been defined. Based on the Probabilistic Safety Analysis (PSA) results and industry operating experiences, the most critical component is identified. This paper proposed a systems engineering concept development framework towards EDG performance monitoring. The expected output of this study is that the EDG reliability can be improved by the performance monitoring alternatives through the systems engineering concept development effort.

  11. Large Eddy Simulation (LES) Applied to LTC/Diesel/Hydrogen Engine...

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

    More Documents & Publications Large Eddy Simulation (LES) Applied to Low-Temperature and Diesel Engine Combustion Research Large Eddy Simulation (LES) Applied to LTCDiesel...

  12. Cummins' Next Generation Tier 2, Bin 2 Light Truck Diesel Engine...

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

    Development of a new light truck, in-line 4-cylinder turbocharged diesel engine that will ... Passive Catalytic Approach to Low Temperature NOx Emission Abatement Cummins Next ...

  13. Large Eddy Simulation (LES) Applied to LTC/Diesel/Hydrogen Engine...

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

    ace007oefelein2010o.pdf More Documents & Publications Large Eddy Simulation (LES) Applied to Low-Temperature and Diesel Engine Combustion Research Large Eddy Simulation (LES)...

  14. ATP-LD; Cummins Next Generation Tier 2 Bin 2 Diesel Engine

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

    confidential, proprietary, or otherwise restricted information. ATP-LD; Cummins Next Generation Tier 2 Bin 2 Diesel Engine This presentation does not contain any confidential, ...

  15. EXPLORING LOW EMISSION DIESEL ENGINE OILS WORKSHOP - A SUMMARY REPORT

    SciTech Connect (OSTI)

    Perez, Joseph

    2000-08-20

    This paper discusses and summarizes some of the results of the title workshop. The workshop was held January 31-February 2, 2000 in Phoenix, Arizona. The purpose of the workshop was ''To craft a shared vision for Industry-Government (DOE) research and development collaboration in Diesel Engine Oils to minimize emissions while maintaining or enhancing engine performance''. The final report of the workshop (NREL/SR-570-28521) was issued in June 2000 by the National Renewable Energy Laboratory, 1617 Cole Boulevard, Golden, Colorado 80401-3393. There were some 95 participants at the workshop representing industry, government and academia, Figure 1. The format for the workshop is described in Figure 2. This format allowed for considerable discussion of the various issues prior to deliberations in breakout groups. This process resulted in recommendations to solve the issues related to the next generation of diesel engine oils. Keynote addresses by SAE President Rodica Baranescu (International Truck and Engine Corporation), James Eberhardt of DOE and Paul Machiele of EPA focused on diesel progress, workshop issues and regulatory fuel issues. A panel of experts further defined the issues of interest, presenting snapshots of the current status in their areas of expertise. A Q&A session was followed by a series of technical presentations discussing the various areas. Some two dozen presentations covered the technical issues, Figure 3. An open forum was held to allow any participant to present related studies or comment on any of the technical issues. The participants broke into work groups addressing the various areas found on Figure 2. A group leader was appointed and reported on their findings, recommendations, suggested participants for projects and on related items.

  16. On the concept of separate aftercooling for locomotive diesel engines

    SciTech Connect (OSTI)

    Uzkan, T.; Lenz, M.A.

    1999-04-01

    This paper describes a patented cooling system concept for a turbocharged diesel engine. In particular, it defines a cooling system having the capability of transferring some of the cooling capacity of transferring some of the cooling capacity of engine jacket and engine oil cooling to cool the cylinder inlet air when more than the cooling capacity built into the system through the size of the radiators and fans is needed. This increased aftercooling will improve the engine performance and reduce emission levels. The cooling capacity of a locomotive is essentially determined by the radiator and fan size, among other factors, and is designed to cool the engine within acceptable metal temperatures at a specified maximum ambient temperature and at the maximum engine power. On the other hand, at lower ambient temperatures or engine power levels, the cooling needs of the engine will be less than this maximum cooling capacity of the cooling system. There remains some excess capacity. This paper describes the concept called the ``Separate Aftercooling System`` that uses some of this excess cooling capacity to cool the engine inlet air at the aftercoolers. It shows the feasibility of such a system, describes the order of magnitude of benefits that can be expected from such a system, and outlines the implementation of this concept to EMD built locomotives.

  17. Visualization of UHC Emissions for Low-Temperature Diesel Engine...

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

    Model for Partially PremixedLow-Temperature Diesel Combustion Based onIn-Cylinder Laser Diagnostics and Chemical Kinetics Modeling Heavy-Duty Low-Temperature and Diesel ...

  18. System-Response Issues Imposed by Biodiesel in a Medium-Duty Diesel Engine

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

    | Department of Energy System-Response Issues Imposed by Biodiesel in a Medium-Duty Diesel Engine System-Response Issues Imposed by Biodiesel in a Medium-Duty Diesel Engine The objective of the current research is to assess differences in NOx emissions between biodiesel and petroleum diesel fuels, resulting from fundamental issues and system-response issues. deer09_jacobs.pdf (775.62 KB) More Documents & Publications Biodiesel's Enabling Characteristics in Attaining Low Temperature

  19. Influence of diesel engine combustion on the rupture strength of partially stabilized zirconia

    SciTech Connect (OSTI)

    Brinkman, C.R.; VonCook, K.; Foster, B.E.; Graves, R.L.; Kahl, W.K.; Liu, K.C.; Simpson, W.A. )

    1989-08-01

    This article is on a study conducted to determine whether long-term exposure of two types of partially stabilized zirconia (PSZ) to the combustion environment of diesel engines would generate a change in mechanical properties. The author explains why PSZ was chosen for the study and goes on to discuss some reservations about the use of PSZ in diesel engines.

  20. Variable Charge Motion for 2007-2010 Heavy Duty Diesel Engines | Department

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

    of Energy Variable Charge Motion for 2007-2010 Heavy Duty Diesel Engines Variable Charge Motion for 2007-2010 Heavy Duty Diesel Engines 2003 DEER Conference Presentation: AVL Powertrain Engineering 2003_deer_maier.pdf (669.31 KB) More Documents & Publications Lowest Engine-Out Emissions as the Key to the Future of the Heavy-Duty Diesel Engine: New Development Rersults Can Future Emissions Limits be Met with a Hybrid EGR System Alone? Sources of CO and UHC Emissions in Low-Temperature

  1. Cummins' Next Generation Tier 2, Bin 2 Light Truck Diesel Engine

    Broader source: Energy.gov [DOE]

    Development of a new light truck, in-line 4-cylinder turbocharged diesel engine that will meet Tier 2, Bin 2 emissions and at least a 40% fuel economy benefit over the V-8 gasoline engine it could replace

  2. Development of a Stand-Alone Urea-SCR System for NOx Reduction in Marine Diesel Engines

    Broader source: Energy.gov [DOE]

    Stand-alone urea SCR system was developed for marine diesel engines and showed a 50-percent reduction in NOx.

  3. Emissions From Various Biodiesel Sources Compared to a Range of Diesel Fuels in DPF Equipped Diesel Engines

    SciTech Connect (OSTI)

    Williams, A.; Burton, J.; Christensen, E.; McCormick, R. L.; Tester, J.

    2011-01-01

    The purpose of this study was to measure the impact of various sources of petroleum-based and bio-based diesel fuels on regulated emissions and fuel economy in diesel particulate filter (DPF) equipped diesel engines. Two model year 2008 diesel engines were tested with nine fuels including a certification ultra-low sulfur diesel (ULSD), local ULSD, high aromatic ULSD, low aromatic ULSD, and twenty percent blends of biodiesel derived from algae, camelina, soy, tallow, and yellow grease. Regulated emissions were measured over the heavy duty diesel transient test cycle. Measurements were also made of DPF-out particle size distribution and total particle count from a 13-mode steady state test using a fast mobility particle sizer. Test engines were a 2008 Cummins ISB and a 2008 International Maxx Force 10, both equipped with actively regenerated DPFs. Fuel consumption was roughly 2% greater over the transient test cycle for the B20 blends versus certification ULSD in both engines, consistent with the slightly lower energy content of biodiesel. Unlike studies conducted on older model engines, these engines equipped with diesel oxidation catalysts and DPFs showed small or no measurable fuel effect on the tailpipe emissions of total hydrocarbons (THC), carbon monoxide (CO) and particulate matter (PM). No differences in particle size distribution or total particle count were seen in a comparison of certification ULSD and B20 soy, with the exception of engine idling conditions where B20 produced a small reduction in the number of nucleation mode particles. In the Cummins engine, B20 prepared from algae, camelina, soy, and tallow resulted in an approximately 2.5% increase in nitrogen oxides (NO{sub x}) compared to the base fuel. The International engine demonstrated a higher degree of variability for NO{sub x} emissions, and fuel effects could not be resolved (p > 0.05). The group of petroleum diesel test fuels produced a range of NO{sub x} emissions very similar to that

  4. Taguchi methods applied to oxygen-enriched diesel engine experiments

    SciTech Connect (OSTI)

    Marr, W.W.; Sekar, R.R.; Cole, R.L.; Marciniak, T.J.; Longman, D.E.

    1992-12-01

    This paper describes a test series conducted on a six-cylinder diesel engine to study the impacts of controlled factors (i.e., oxygen content of the combustion air, water content of the fuel, fuel rate, and fuel-injection timing) on engine emissions using Taguchi methods. Three levels of each factor were used in the tests. Only the main effects of the factors were examined; no attempt was made to analyze the interactions among the factors. It was found that, as in the case of the single-cylinder engine tests, oxygen in the combustion air was very effective in reducing particulate and smoke emissions. Increases in NO{sub x} due to the oxygen enrichment observed in the single-cylinder tests also occurred in the present six-cylinder tests. Water in the emulsified fuel was found to be much less effective in decreasing NO{sub x} emissions for the six-cylinder engine than it was for the single-cylinder engine.

  5. Taguchi methods applied to oxygen-enriched diesel engine experiments

    SciTech Connect (OSTI)

    Marr, W.W.; Sekar, R.R.; Cole, R.L.; Marciniak, T.J. ); Longman, D.E. )

    1992-01-01

    This paper describes a test series conducted on a six-cylinder diesel engine to study the impacts of controlled factors (i.e., oxygen content of the combustion air, water content of the fuel, fuel rate, and fuel-injection timing) on engine emissions using Taguchi methods. Three levels of each factor were used in the tests. Only the main effects of the factors were examined; no attempt was made to analyze the interactions among the factors. It was found that, as in the case of the single-cylinder engine tests, oxygen in the combustion air was very effective in reducing particulate and smoke emissions. Increases in NO[sub x] due to the oxygen enrichment observed in the single-cylinder tests also occurred in the present six-cylinder tests. Water in the emulsified fuel was found to be much less effective in decreasing NO[sub x] emissions for the six-cylinder engine than it was for the single-cylinder engine.

  6. Emissions from Buses with DDC 6V92 Engines Using Synthetic Diesel Fuel

    SciTech Connect (OSTI)

    Paul Norton; Keith Vertin; Nigel N. Clark; Donald W. Lyons; Mridul Gautam; Stephen Goguen; James Eberhardt

    1999-05-03

    Synthetic diesel fuel can be made from a variety of feedstocks, including coal, natural gas and biomass. Synthetic diesel fuels can have very low sulfur and aromatic content, and excellent autoignition characteristics. Moreover, synthetic diesel fuels may also economically competitive with California diesel fuel if .roduced in large volumes. Previous engine laboratory and field tests using a heavy-duty chassis dynamometer indicate that synthetic diesel fuel made using the Fischer-Tropsch (F-T) catalytic conversion process is a promising alternative fuel, because it can be used in unmodified diesel engines, and can reduce exhaust emissions substantially. The objective of this study was a preliminary assessment of the emissions from older model transit operated on Mossgas synthetic diesel fuel. The study compared emissions from transit buses operating on Federal no. 2 Diesel fuel, Mossgas synthetic diesel (MGSD), and a 50/50 blend of the two fuels. The buses were equipped with unmodified Detroit Diesel 6V92 2-stroke diesel engines. Six 40-foot buses were tested. Three of the buses had recently rebuilt engines and were equipped with an oxidation catalytic converter. Vehicle emissions measurements were performed using West Virginia University's unique transportable chassis dynamometer. The emissions were measured over the Central Business District (CBD) driving cycle. The buses performed well on both neat and blended MGSD fuel. Three buses without catalytic converters were tested. Compared to their emissions when operating on Federal no. 2 diesel fuel, these buses emitted an average of 5% lower oxides of nitrogen (NOx) and 20% lower particulate matter (PM) when operating on neat MGSD fuel. Catalyst equipped buses emitted an average of 8% lower NOx and 31% lower PM when operating on MGSD than when operating on Federal no. 2 diesel fuel.

  7. Development of a Waste Heat Recovery System for Light Duty Diesel Engines |

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

    Department of Energy a Waste Heat Recovery System for Light Duty Diesel Engines Development of a Waste Heat Recovery System for Light Duty Diesel Engines Substantial increases in engine efficiency of a light-duty diesel engine, which require utilization of the waste energy found in the coolant, EGR, and exhaust streams, may be increased through the development of a Rankine cycle waste heat recovery system deer09_briggs.pdf (291.32 KB) More Documents & Publications Performance of an

  8. Heavy-duty H2-Diesel Dual Fuel Engines | Department of Energy

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

    duty H2-Diesel Dual Fuel Engines Heavy-duty H2-Diesel Dual Fuel Engines Brake thermal efficiency can be improved with the addition of a large amount of hydrogen at medium to high loads deer09_li.pdf (37.32 KB) More Documents & Publications Evaluation of NTE Windows and a Work-Based Method to Determine In-Use Emissions of a Heavy-Duty Diesel Engine Status of APBF-DEC NOx Adsorber/DPF Projects Integrated Engine and Aftertreatment Technology Roadmap for EPA 2010 Heavy-duty Emissions Regulations

  9. Diesel engine performance and emissions using different fuel/additive combinations

    SciTech Connect (OSTI)

    Sutton, D.L.; Rush, M.W.; Richards, P.

    1988-01-01

    It is probable that diesel fuel quality in Europe will fall as the need to blend conversion components into the diesel pool increases. In particular diesel ignition quality and stability could decrease and carbon residue and aromatic content increase. This paper discusses the effects of worsening fuel quality on combustion, injection characteristics and emissions and the efficacy of appropriate additives in overcoming these effects. Both direct injection and indirect injection engines were used in the investigations.

  10. Large Eddy Simulation (LES) Applied to Low-Temperature and Diesel Engine

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

    Combustion Research | Department of Energy ace_07_oefelein.pdf (4.03 MB) More Documents & Publications Large Eddy Simulation (LES) Applied to Low-Temperature and Diesel Engine Combustion Research Large Eddy Simulation (LES) Applied to LTC/Diesel/Hydrogen Engine Combustion Research Vehicle Technologies Office Merit Review 2014: Large Eddy Simulation (LES) Applied to Advanced Engine Combustion Research Combustion Research | Department of Energy

    1 DOE Hydrogen and Fuel Cells Program,

  11. Progress on DOE Vehicle Technologies Light-Duty Diesel Engine Efficiency

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

    and Emissions Milestones | Department of Energy DOE Vehicle Technologies Light-Duty Diesel Engine Efficiency and Emissions Milestones Progress on DOE Vehicle Technologies Light-Duty Diesel Engine Efficiency and Emissions Milestones The path to 45 percent peak BTE in FY 2010 includes modern base engine plus enabling technologies demonstrated in FY 2008 plus the recovery of thermal energy from the exhaust and EGR systems deer09_wagner.pdf (224.99 KB) More Documents & Publications Achieving

  12. U.S. Navy Marine Diesel Engines and the Environment - Part 3 | Department

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

    of Energy 3 U.S. Navy Marine Diesel Engines and the Environment - Part 3 2002 DEER Conference Presentation: NAVSEA 2002_deer_osborne3.pdf (1.1 MB) More Documents & Publications Investigation of Bio-Diesel Fueled Engines under Low-Temperature Combustion Strategies High Fuel Economy Heavy-Duty Truck Engine The Maritime Administration's Energy and Emissions Program - Part 2

  13. Identification and quantification analysis of nonlinear dynamics properties of combustion instability in a diesel engine

    SciTech Connect (OSTI)

    Yang, Li-Ping Ding, Shun-Liang; Song, En-Zhe; Ma, Xiu-Zhen; Litak, Grzegorz

    2015-01-15

    The cycling combustion instabilities in a diesel engine have been analyzed based on chaos theory. The objective was to investigate the dynamical characteristics of combustion in diesel engine. In this study, experiments were performed under the entire operating range of a diesel engine (the engine speed was changed from 600 to 1400 rpm and the engine load rate was from 0% to 100%), and acquired real-time series of in-cylinder combustion pressure using a piezoelectric transducer installed on the cylinder head. Several methods were applied to identify and quantitatively analyze the combustion process complexity in the diesel engine including delay-coordinate embedding, recurrence plot (RP), Recurrence Quantification Analysis, correlation dimension (CD), and the largest Lyapunov exponent (LLE) estimation. The results show that the combustion process exhibits some determinism. If LLE is positive, then the combustion system has a fractal dimension and CD is no more than 1.6 and within the diesel engine operating range. We have concluded that the combustion system of diesel engine is a low-dimensional chaotic system and the maximum values of CD and LLE occur at the lowest engine speed and load. This means that combustion system is more complex and sensitive to initial conditions and that poor combustion quality leads to the decrease of fuel economy and the increase of exhaust emissions.

  14. Light-Duty Diesel EngineTechnology to Meet Future Emissions and Performance

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

    Requirements of the U.S. Market | Department of Energy EngineTechnology to Meet Future Emissions and Performance Requirements of the U.S. Market Light-Duty Diesel EngineTechnology to Meet Future Emissions and Performance Requirements of the U.S. Market 2004 Diesel Engine Emissions Reduction (DEER) Conference Presentation: Ricardo, Inc. 2004_deer_greaney.pdf (497.44 KB) More Documents & Publications Ricardo's ACTION Strategy: An Enabling Light Duty Diesel Technology for the US Market US

  15. Effects of fuel stability upon injection-nozzle deposit formation in road-tested diesel engines

    SciTech Connect (OSTI)

    Fortnagel, M.; Herrbrich, B.

    1985-01-01

    The properties of diesel fuels have changed distinctly, especially in the United States. Fuel-related problems-one of which is the injector-nozzle coking in passenger-car diesel engines-have arisen due to deteriorated fuel qualities. Extended investigations of road-tested diesel engines suggest a link between fuel stability and the coke-deposit mechanism. Stabilizing poor-quality fuels by a chemical-additive package resulted in troublefree operation over extended mileage. Thus fuel stability, which evidently has to be secured at the refinery, shows up as an important property for satisfactory engine operation.

  16. Testing an Active Diesel Particulate Filter on a 2-Cycle Marine Engine |

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

    Department of Energy an Active Diesel Particulate Filter on a 2-Cycle Marine Engine Testing an Active Diesel Particulate Filter on a 2-Cycle Marine Engine Presentation given at DEER 2006, August 20-24, 2006, Detroit, Michigan. Sponsored by the U.S. DOE's EERE FreedomCar and Fuel Partnership and 21st Century Truck Programs. 2006_deer_depetrillo.pdf (184.51 KB) More Documents & Publications Active Diesel Emission Control Technology for Sub-50 HP Engines with Low Exhaust Temperature

  17. Mathematical model of marine diesel engine simulator for a new methodology of self propulsion tests

    SciTech Connect (OSTI)

    Izzuddin, Nur; Sunarsih,; Priyanto, Agoes

    2015-05-15

    As a vessel operates in the open seas, a marine diesel engine simulator whose engine rotation is controlled to transmit through propeller shaft is a new methodology for the self propulsion tests to track the fuel saving in a real time. Considering the circumstance, this paper presents the real time of marine diesel engine simulator system to track the real performance of a ship through a computer-simulated model. A mathematical model of marine diesel engine and the propeller are used in the simulation to estimate fuel rate, engine rotating speed, thrust and torque of the propeller thus achieve the target vessel’s speed. The input and output are a real time control system of fuel saving rate and propeller rotating speed representing the marine diesel engine characteristics. The self-propulsion tests in calm waters were conducted using a vessel model to validate the marine diesel engine simulator. The simulator then was used to evaluate the fuel saving by employing a new mathematical model of turbochargers for the marine diesel engine simulator. The control system developed will be beneficial for users as to analyze different condition of vessel’s speed to obtain better characteristics and hence optimize the fuel saving rate.

  18. Estimation and Control of Diesel Engine Processes Utilizing Variable Intake Valve Actuation

    Broader source: Energy.gov [DOE]

    Air handling system model for multi-cylinder variable geometry turbocharged diesel engine with cooled EGR and flexible intake valve actuation developed to capture dynamic effects of gas exchange actuators

  19. Adaptive Injection Strategies (AIS) for Ultra-low Emissions Diesel Engines

    Broader source: Energy.gov [DOE]

    Presentation given at the 2007 Diesel Engine-Efficiency & Emissions Research Conference (DEER 2007). 13-16 August, 2007, Detroit, Michigan. Sponsored by the U.S. Department of Energy's (DOE) Office of FreedomCAR and Vehicle Technologies (OFCVT).

  20. Design and Implementation of Silicon Nitride Valves for Heavy Duty Diesel Engines

    Broader source: Energy.gov [DOE]

    Poster presentation at the 2007 Diesel Engine-Efficiency & Emissions Research Conference (DEER 2007). 13-16 August, 2007, Detroit, Michigan. Sponsored by the U.S. Department of Energy's (DOE) Office of FreedomCAR and Vehicle Technologies (OFCVT).

  1. Effect of Machining Procedures on the Strength of Ceramics for Advanced Diesel Engine Applications

    Broader source: Energy.gov [DOE]

    Poster presentation at the 2007 Diesel Engine-Efficiency & Emissions Research Conference (DEER 2007). 13-16 August, 2007, Detroit, Michigan. Sponsored by the U.S. Department of Energy's (DOE) Office of FreedomCAR and Vehicle Technologies (OFCVT).

  2. Diesel Engine CO2 and SOx Emission Compliance Strategy for the...

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

    More Documents & Publications MPS213 - A Non-Thermal Plasma Application for the Royal Navy - Part 1 Cleaning Up Diesel Engines Vessel Cold-Ironing Using a Barge Mounted PEM Fuel ...

  3. Can We Accurately Measure In-Use Emissions from Heavy-Duty Diesel Engines?

    Broader source: Energy.gov [DOE]

    Poster presentation at the 2007 Diesel Engine-Efficiency & Emissions Research Conference (DEER 2007). 13-16 August, 2007, Detroit, Michigan. Sponsored by the U.S. Department of Energy's (DOE) Office of FreedomCAR and Vehicle Technologies (OFCVT).

  4. Integration of Diesel Engine Technology to Meet US EPA 2010 Emissions with Improved Thermal Efficiency

    Broader source: Energy.gov [DOE]

    Presentation given at the 2007 Diesel Engine-Efficiency & Emissions Research Conference (DEER 2007). 13-16 August, 2007, Detroit, Michigan. Sponsored by the U.S. Department of Energy's (DOE) Office of FreedomCAR and Vehicle Technologies (OFCVT).

  5. Cummins Next Generation Tier 2, Bin 2 Light Truck Diesel engine

    Broader source: Energy.gov [DOE]

    Discusses plan, baselining, and modeling, for new light truck 4-cylinder turbocharged diesel meeting Tier 2, Bin 2 emissions and 40 percent better fuel economy than the V-8 gasoline engine it will replace

  6. The effect of fumigation of different ethalnol proofs on a turbocharged diesel engine

    SciTech Connect (OSTI)

    Hayes, T.K.; Savage, L.D.; White, R.A.; Sorenson, S.C.

    1988-01-01

    Lower proof ethanol is shown to be a viable alternate fuel for diesel engines. This type of ethanol can be manufactured economically in small distillation plants from renewable grain supplies. The effect of fumigation of ethanol proofs with a multipoint injection system on a turbocharged direct injection diesel engine at 2,400 rpm and three loads was studied. The addition of the water in the lower proofs reduced the maximum rate of pressure rise and peak pressure from pure ethanol levels. Both of these values were significantly higher than those for diesel operation. HC and CO emissions increased several times over diesel levels at all loads and also with increased ethanol fumigation. NO emissions were reduced below diesel levels for lower proof ethanol at all loads. The tests at this rpm and load with a a multipoint ethanol injection system indicate that lower (100 or 125) proof provides optimum performance.

  7. Development of the High Efficiency X1 Rotary Diesel Engine |...

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

    More Documents & Publications DEER 2007 ACES Status Report Poster: P-23 Effectiveness of a Diesel Oxidation Catalyst (DOC) to control CO and hydrocarbon emissions from Reactivity ...

  8. Emissions from Heavy-Duty Diesel Engine with EGR using Oil Sands Derived

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

    Fuels | Department of Energy Heavy-Duty Diesel Engine with EGR using Oil Sands Derived Fuels Emissions from Heavy-Duty Diesel Engine with EGR using Oil Sands Derived Fuels 2003 DEER Conference Presentation: National Research Council Canada, Ottawa, Ontario, Canada 2003_deer_neill.pdf (860.57 KB) More Documents & Publications Development of Advanced Combustion Technologies for Increased Thermal Efficiency Biodiesel Research Update Effect of the Composition of Hydrocarbon Streams on HCCI

  9. 12TH DIESEL ENGINE-EFFICIENCY AND EMISSIONS RESEARCH CONFERENCE (DEER 2006)

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

    PRESENTATIONS | Department of Energy 2TH DIESEL ENGINE-EFFICIENCY AND EMISSIONS RESEARCH CONFERENCE (DEER 2006) PRESENTATIONS 12TH DIESEL ENGINE-EFFICIENCY AND EMISSIONS RESEARCH CONFERENCE (DEER 2006) PRESENTATIONS Presented at DEER 2006, August 20-24, 2006, Detroit, Michigan. Sponsored by the U.S. DOE's EERE FreedomCar and Fuel Partnership and 21st Century Truck Programs. 2006_deer_aravelli.pdf (1.66 MB) More Documents & Publications Light Duty Diesels in the United States - Some

  10. Visualization of UHC Emissions for Low-Temperature Diesel Engine Combustion

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

    | Department of Energy Visualization of UHC Emissions for Low-Temperature Diesel Engine Combustion Visualization of UHC Emissions for Low-Temperature Diesel Engine Combustion Presentation given at DEER 2006, August 20-24, 2006, Detroit, Michigan. Sponsored by the U.S. DOE's EERE FreedomCar and Fuel Partnership and 21st Century Truck Programs. 2006_deer_musculus.pdf (9.8 MB) More Documents & Publications In-Cylinder Processes of EGR-Diluted Low-Load, Low-Temperature Diesel Combustion A

  11. The use of neural nets for matching compressors with diesel engines

    SciTech Connect (OSTI)

    Nelson, S.A. II; Filipi, Z.S.; Assanis, D.N.

    1996-12-31

    A technique which uses trained neural nets to model the compressor in the context of a turbocharged diesel engine simulation is introduced. This technique replaces the usual interpolation of compressor maps with the evaluation of a smooth mathematical function, thus providing engine simulations with greater robustness and flexibility. Following presentation of the methodology, the proposed neural net technique is validated against data from a truck type, 6-cylinder, 14 liter diesel engine. Furthermore, with the introduction of an additional parameter, the proposed neural net can be trained to simulate an entire family of compressors. As a demonstration, five compressors of different sizes are represented with the neural net model, and used for matching calculations with intercooled and non-intercooled engine configurations at different speeds. This novel approach readily allows for evaluation of various options prior to prototype production, and is thus a powerful design tool for selection of the best compressor for a given diesel engine system.

  12. Effect of translucence of engineering ceramics on heat transfer in diesel engines. Final report

    SciTech Connect (OSTI)

    Wahiduzzaman, S.; Morel, T.

    1992-04-01

    This report describes the experimental portion of a broader study undertaken to assess the effects of translucence of ceramic materials used as thermal barrier coatings in diesel engines. In an earlier analytical work a parametric study was performed, varying several radiative properties over ranges typical of engineering ceramics, thereby identifying the most important radiative properties and their impact on in-cylinder heat transfer. In the current study these properties were experimentally determined for several specific zirconia coatings considered for thermal barrier applications in diesel engines. The methodology of this study involved formulation of a model capable of describing radiative transfer through a semitransparent medium as a function of three independent model parameters, ie, absorption coefficient, scattering coefficient and refractive index. For the zirconia-based ceramics investigated in this study, it was concluded that for usual coating thicknesses (1.5--2.5 mm) these ceramics are optically thick and hence, are effective as radiative heat transfer barriers. These ceramics possess high scattering coefficients and low absorption coefficients causing them to be highly reflective (60-80%) in the spectral region where thermal radiation is important. The performance of the investigated ceramics and the mechanism of heat transfer were found to depend on surface condition, specifically on soot deposition. Thus, to insure the optimum thermal barrier operation for either clean or heavily sooted surfaces, a ceramic material with high scattering coefficient provides the best choice.

  13. Effect of translucence of engineering ceramics on heat transfer in diesel engines

    SciTech Connect (OSTI)

    Wahiduzzaman, S.; Morel, T. )

    1992-04-01

    This report describes the experimental portion of a broader study undertaken to assess the effects of translucence of ceramic materials used as thermal barrier coatings in diesel engines. In an earlier analytical work a parametric study was performed, varying several radiative properties over ranges typical of engineering ceramics, thereby identifying the most important radiative properties and their impact on in-cylinder heat transfer. In the current study these properties were experimentally determined for several specific zirconia coatings considered for thermal barrier applications in diesel engines. The methodology of this study involved formulation of a model capable of describing radiative transfer through a semitransparent medium as a function of three independent model parameters, ie, absorption coefficient, scattering coefficient and refractive index. For the zirconia-based ceramics investigated in this study, it was concluded that for usual coating thicknesses (1.5--2.5 mm) these ceramics are optically thick and hence, are effective as radiative heat transfer barriers. These ceramics possess high scattering coefficients and low absorption coefficients causing them to be highly reflective (60-80%) in the spectral region where thermal radiation is important. The performance of the investigated ceramics and the mechanism of heat transfer were found to depend on surface condition, specifically on soot deposition. Thus, to insure the optimum thermal barrier operation for either clean or heavily sooted surfaces, a ceramic material with high scattering coefficient provides the best choice.

  14. A WEAR MODEL FOR DIESEL ENGINE EXHAUST VALVES

    SciTech Connect (OSTI)

    Blau, Peter Julian

    2009-11-01

    The work summarized here comprises the concluding effort of a multi-year project, funded by the U.S. Department of Energy, Office of Vehicle Technologies. It supports the development of a better understanding of advanced diesel engine designs in which enhanced power density, energy efficiency, and emissions control place increasing demands upon the durability of engine materials. Many kinds of metallic alloys are used in engines depending on the operating stresses, temperatures, and chemical environments. Exhaust valves, for example, are subjected to high temperatures and repetitive surface contacts that place demands on durability and frictional characteristics of the materials. Valves must continue to seal the combustion chamber properly for thousands of hours of cyclic engine operation and under varying operating conditions. It was the focus of this effort to understand the wear processes in the valve-seat area and to develop a model for the surface deformation and wear of that important interface. An annotated bibliography is provided to illustrate efforts to understand valve wear and to investigate the factors of engine operation that affect its severity and physical manifestation. The project for which this modeling effort was the final task, involved construction of a high-temperature repetitive impact test system as well as basic tribology studies of the combined processes of mechanical wear plus oxidation at elevated temperatures. Several publications resulted from this work, and are cited in this report. The materials selected for the experimental work were high-performance alloys based on nickel and cobalt. In some cases, engine-tested exhaust valves were made available for wear analysis and to ensure that the modes of surface damage produced in experiments were simulative of service. New, production-grade exhaust valves were also used to prepare test specimens for experimental work along with the other alloy samples. Wear analysis of valves and seats

  15. Methylal and Methylal-Diesel Blended Fuels from Use In Compression-Ignition Engines

    SciTech Connect (OSTI)

    Keith D. Vertin; James M. Ohi; David W. Naegeli; Kenneth H. Childress; Gary P. Hagen; Chris I. McCarthy; Adelbert S. Cheng; Robert W. Dibble

    1999-05-05

    Gas-to-liquids catalytic conversion technologies show promise for liberating stranded natural gas reserves and for achieving energy diversity worldwide. Some gas-to-liquids products are used as transportation fuels and as blendstocks for upgrading crude derived fuels. Methylal (CH{sub 3}-O-CH{sub 2}-O-CH{sub 3}) also known as dimethoxymethane or DMM, is a gas-to-liquid chemical that has been evaluated for use as a diesel fuel component. Methylal contains 42% oxygen by weight and is soluble in diesel fuel. The physical and chemical properties of neat methylal and for blends of methylal in conventional diesel fuel are presented. Methylal was found to be more volatile than diesel fuel, and special precautions for distribution and fuel tank storage are discussed. Steady state engine tests were also performed using an unmodified Cummins 85.9 turbocharged diesel engine to examine the effect of methylal blend concentration on performance and emissions. Substantial reductions of particulate matter emissions h ave been demonstrated 3r IO to 30% blends of methylal in diesel fuel. This research indicates that methylal may be an effective blendstock for diesel fuel provided design changes are made to vehicle fuel handling systems.

  16. Potentiality of small DI diesel engines under consideration of emissions and noise control

    SciTech Connect (OSTI)

    Sugihara, K.; Matusi, Y.; Saegusa, S.

    1985-01-01

    The potentiality of direct injection (DI) diesel engines for passenger cars has been examined by comparing the characteristics of fuel consumption, exhaust emissions and noise levels between a turbocharged DI diesel engine and a turbocharged IDI diesel engine with the same displacement, 4 cylinders and 2 liters. It was observed that improved fuel consumption was obtained as the engine load increased, namely, 10 - 15% in the higher load range and 5 - 10% in the partial load range. In comparison to the IDI engine, the exhaust emissions of the DI engine tended to contain two or three times higher NOx and HC, and also about 30% higher particulates. Further, the noise levels of the DI engine were approximately 2 - 4 db (a) higher than those of the IDI engine. It was suggested from these results that in those countries which have stringent emission and noise regulations several years would be required to introduce small, high speed DI diesel engines for passenger cars to meet with these regulations.

  17. U.S. Navy Marine Diesel Engines and the Environment - Part 2 | Department

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

    of Energy 2 U.S. Navy Marine Diesel Engines and the Environment - Part 2 2002 DEER Conference Presentation: NAVSEA 2002_deer_osborne2.pdf (1.14 MB) More Documents & Publications MPS213 - A Non-Thermal Plasma Application for the Royal Navy - Part 4 Non-thermal plasma based technologies for the aftertreatment of diesel exhaust particulates and NOx MPS213 - A Non-Thermal Plasma Application for the Royal Navy - Part 1

  18. Coal-fueled high-speed diesel engine development: Task 2, Market assessment and economic analysis

    SciTech Connect (OSTI)

    Kakwani, R. M.; Wilson, Jr., R. P.; Winsor, R. E.

    1991-12-01

    Based on the preliminary coal engine design developed, this task was conducted to identify the best opportunity(s) to enter the market with the future coal-fueled, high-speed diesel engine. The results of this market and economic feasibility assessment will be used to determine what specific heavy duty engine application(s) are most attractive for coal fuel, and also define basic economic targets for the engine to be competitive.

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

    SciTech Connect (OSTI)

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

    2012-01-01

    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.

  20. Novel injector techniques for coal-fueled diesel engines. Final report

    SciTech Connect (OSTI)

    Badgley, P.R.

    1992-09-01

    This report, entitled ``Novel Injector Techniques for Coal-Fueled Diesel Engines,`` describes the progress and findings of a research program aimed at development of a dry coal powder fuel injector in conjunction with the Thermal Ignition Combustion System (TICS) concept to achieve autoignition of dry powdered coal in a single-cylinder high speed diesel engine. The basic program consisted of concept selection, analysis and design, bench testing and single cylinder engine testing. The coal injector concept which was selected was a one moving part dry-coal-powder injector utilizing air blast injection. Adiabatics has had previous experience running high speed diesel engines on both direct injected directed coal-water-slurry (CWS) fuel and also with dry coal powder aspirated into the intake air. The Thermal Ignition Combustion System successfully ignited these fuels at all speeds and loads without requiring auxiliary ignition energy such as pilot diesel fuel, heated intake air or glow or spark plugs. Based upon this prior experience, it was shown that the highest efficiency and fastest combustion was with the dry coal, but that the use of aspiration of coal resulted in excessive coal migration into the engine lubrication system. Based upon a desire of DOE to utilize a more modern test engine, the previous naturally-aspirated Caterpillar model 1Y73 single cylinder engine was replaced with a turbocharged (by use of shop air compressor and back pressure control valve) single cylinder version of the Cummins model 855 engine.

  1. Sizes, graphitic structures and fractal geometry of light-duty diesel engine particulates.

    SciTech Connect (OSTI)

    Lee, K. O.; Zhu, J.; Ciatti, S.; Choi, M. Y.; Energy Systems; Drexel Univ.

    2003-01-01

    The particulate matter of a light-duty diesel engine was characterized in its morphology, sizes, internal microstructures, and fractal geometry. A thermophoretic sampling system was employed to collect particulates directly from the exhaust manifold of a 1.7-liter turbocharged common-rail direct-injection diesel engine. The particulate samples collected at various engine-operating conditions were then analyzed by using a high-resolution transmission electron microscope (TEM) and an image processing/data acquisition system. Results showed that mean primary particle diameters (dp), and radii of gyration (Rg), ranged from 19.4 nm to 32.5 nm and 77.4 nm to 134.1 nm, respectively, through the entire engine-operating conditions of 675 rpm (idling) to 4000 rpm and 0% to 100% loads. It was also revealed that the other important parameters sensitive to the particulate formation, such as exhaust-gas recirculation (EGR) rate, equivalence ratio, and temperature, affected particle sizes significantly. Bigger primary particles were measured at higher EGR rates, higher equivalence ratios (fuel-rich), and lower exhaust temperatures. Fractal dimensions (D{sup f}) were measured at a range of 1.5 - 1.7, which are smaller than those measured for heavy-duty direct-injection diesel engine particulates in our previous study. This finding implies that the light-duty diesel engine used in this study produces more stretched chain-like shape particles, while the heavy-duty diesel engine emits more spherical particles. The microstructures of diesel particulates were observed at high TEM magnifications and further analyzed by a Raman spectroscope. Raman spectra revealed an atomic structure of the particulates produced at high engine loads, which is similar to that of typical graphite.

  2. Simulation studies of diesel engine performance with oxygen enriched air and water emulsified fuels

    SciTech Connect (OSTI)

    Assanis, D.N.; Baker, D. ); Sekar, R.R.; Siambekos, C.T.; Cole, R.L.; Marciniak, T.J. )

    1990-01-01

    A computer simulation code of a turbocharged, turbocompound diesel engine was modified to study the effects of using oxygen-enriched combustion air and water-emulsified diesel fuels. Oxygen levels of 21 percent to 40 percent by volume in the combustion air were studied. Water content in the fuel was varied from 0 percent to 50 percent mass. Simulation studies and a review and analysis of previous work in this area led to the following conclusions about expected engine performance and emissions: the power density of the engine is significantly increased by oxygen enrichment. Ignition delay and particulate emissions are reduced. Combustion temperatures and No{sub x} emissions are increased with oxygen enrichment but could be brought back to the base levels by introducing water in the fuel. The peak cylinder pressure which increases with the power output level might result in mechanical problems with engine components. Oxygen enrichment also provides an opportunity to use cheaper fuel such as No. 6 diesel fuel. Overall, the adverse effects of oxygen enrichment could be countered by the addition of water and it appears that an optimum combination of water content, oxygen level, and base diesel fuel quality may exist. This could yield improved performance and emissions characteristics compared to a state-of-the-art diesel engine. 9 refs., 8 figs.

  3. Engineering evaluation of the General Motors (GM) diesel rating and capabilities

    SciTech Connect (OSTI)

    Gross, R.E.

    1992-04-01

    K-Reactor`s number one GM diesel (GM-lK) suffered recurrent, premature piston pin bushing failures between July 1990 and January 1991. These failures raised a concern that the engine`s original design capabilities were being exceeded. Were we asking old engines to do too much by powering 1200 kw (continuous) rated electrical generators? Was excessive wear of the piston pin bushings a result of having exceeded the engine`s capabilities (overload), or were the recent failures a direct result of poor quality, poor design, or defective replacement parts? Considering the engine`s overall performance for the past 30 years, during which an engine failure of this nature had never occurred, and the fact that 1200 kw was approximately 50% of the engine`s original tested capability, Reactor Engineering did not consider it likely that an overloaded engine caused bushing failures. What seemed more plausible was that the engine`s failure to perform was caused by deficiencies in, or poor quality of, replacement parts.The following report documents: (1) the results of K-Reactor EDG failure analysis; (2) correlation of P- and C-Reactor GM diesel teardowns; (3) the engine rebuild to blueprint specification; (4) how the engine was determined ready for test; (5) testing parameters that were developed; (6) a summary of test results and test insights; (7) how WSRC determined engine operation was acceptable; (8) independent review of 1200 kw operational data; (9) approval of the engines` 12OOkw continuous rating.

  4. Isuzu's new 12. 0L micro-computer controlled turbocharged diesel engine

    SciTech Connect (OSTI)

    Wakabayashi, M.; Sakata, S.; Hamanaka, K.

    1984-01-01

    Isuzu Motors Limited introduced in the Japanese market a new micro-computer controlled turbocharged 6RA1TC diesel engine which powers new Isuzu heavy-duty trucks in 1983. This engine has successfully achieved both fuel economy and vehicle performance. This was realized by the combination of the newly developed micro-computer controlled fuel injection system and turbocharged air-to-air intercooled four valve low friction diesel engine. The purpose of the computer control system is flexible and precise control of fuel flow rate and fuel injection timing. This provides maximum engine performance and driveability, best fuel economy combined with the gearing of the vehicle, and easy operation for drivers. Additionally, this engine offers the following features: Good cold startability; Constant speed Cruise Control; Automatic schedule idling speed during warm-up; Stable low speed idling; Light and quick throttle response; Monitoring display for best fuel economy operation; Monitor display for engine diagnosis.

  5. Vehicle Technologies Office: AVTA- Diesel Internal Combusion Engine Vehicles

    Broader source: Energy.gov [DOE]

    The Advanced Vehicle Testing Activity (AVTA) uses standard procedures and test specifications to test and collect data from vehicles on dynamometers, closed test tracks, and on-the-road. Downloadable data on the following vehicles is available: 2014 Chevrolet Cruze Diesel, 2013 Volkswagen Jetta TDI, and 2009 Volkswagen Jetta TDI.

  6. Emissions comparison of alternative fuels in an advanced automotive diesel engine. Interim report, October 1997--April 1998

    SciTech Connect (OSTI)

    Sirman, M.B.; Owens, E.C.; Whitney, K.A.

    1998-09-01

    Exhaust emissions mappings were conducted for six alternative diesel fuels in a Daimler-Benz (DB) OM6l1 diesel engine. The OM6l 1 engine is a 2.2L, direct-injection diesel with a Bosch, high-pressure, common-rail, fuel-injection system. The engine design closely matches the specifications of the Partnership for a New Generation Vehicle (PNGV) target compression-ignition engine. Triplicate 13-mode, steady-state test sequences were performed for each fuel, with a 2-D control fuel serving as the baseline. No adjustments were made to the engine to compensate for any performance differences resulting from fuel property variations.

  7. Wear mechanism and wear prevention in coal-fueled diesel engines. Task 7, Extended wear testing

    SciTech Connect (OSTI)

    Wakenell, J.F.; Fritz, S.G.; Schwalb, J.A.

    1991-07-01

    Over the past several years, interest has arisen in the development of coal-fired diesel engines for the purpose of efficiently utilizing the extensive coal reserves in the United States, and therefore reducing dependence on foreign oil. One process, which is being considered for use in producing clean coal fuel products involves mild gasification. This process produces by-products which can be further refined and, when blended with neat diesel fuel, used as an engine fuel. The purpose of this task was to test a blend of this coal liquid and diesel fuel (referred to as coal-lite) in an engine, and determine if any detrimental results were observed. This was done by performing a back-to-back performance and emission test of neat diesel fuel and the coal-lite fuel, followed by a 500-hour test of the coal-lite fuel, and completed by a back-to-back performance and emission test of the coal-lite fuel and neat diesel fuel.

  8. Wear mechanism and wear prevention in coal-fueled diesel engines

    SciTech Connect (OSTI)

    Wakenell, J.F.; Fritz, S.G.; Schwalb, J.A.

    1991-07-01

    Over the past several years, interest has arisen in the development of coal-fired diesel engines for the purpose of efficiently utilizing the extensive coal reserves in the United States, and therefore reducing dependence on foreign oil. One process, which is being considered for use in producing clean coal fuel products involves mild gasification. This process produces by-products which can be further refined and, when blended with neat diesel fuel, used as an engine fuel. The purpose of this task was to test a blend of this coal liquid and diesel fuel (referred to as coal-lite) in an engine, and determine if any detrimental results were observed. This was done by performing a back-to-back performance and emission test of neat diesel fuel and the coal-lite fuel, followed by a 500-hour test of the coal-lite fuel, and completed by a back-to-back performance and emission test of the coal-lite fuel and neat diesel fuel.

  9. The regenerable trap oxidizer-An emission control technique for diesel engines

    SciTech Connect (OSTI)

    Abthoff, J.; Schuster, H.D.; Langer, H.J.; Loose, G.

    1985-01-01

    Daimler-Benz made an early start with the development of systems for the aftertreatment of the exhaust gas emitted by diesel engines. The more important limiting conditions could best be met by the provision of a ceramic, selfcleaning trap oxidizer (TO). In such filters, self-regeneration is effected continuously while driving without any external control. Either partial or complete regeneration is effected, depending on the temperature, oxygen content and rate of flow of the exhaust gas, the amount of soot in the filter and the period for which a given operating condition is maintained. Such a trap oxidizer was developed for a 3.0 liter turbocharged diesel engine to the extent necessary for series production and has been fitted to type 300 SD and 300 D turbocharged diesel of model year 1985 in California.

  10. Control studies of an automotive turbocharged diesel engine with variable geometry turbine

    SciTech Connect (OSTI)

    Winterbone, D.E.; Jai In, S.

    1988-01-01

    Major advances are being made in engine hardware, control theories and microcomputer technology. The application of advanced control and monitoring techniques to engines should enable them to meet all the restrictions imposed upon them while they operate to their full potential. Variable geometry turbocharging of automotive diesel engines is a good example of a case where the control implications need to be considered carefully. This paper reports a technique for developing the dynamic characteristics of turbocharged diesel engines with variable geometry turbine and compares the results with measurements obtained on an engine. It is the first step in the design process for a true, dynamic, multivariable controller. Most current systems are simply scheduling devices with little understanding or consideration of possible interactions between various control loops. A non-linear simulation model for a turbocharged diesel engine was used to investigate the performance of the engine. Major features of the program, aspects of constructing a model for control purposes and identification procedures of the engine dynamic are discussed.

  11. Engineering evaluation of the General Motors (GM) diesel rating and capabilities

    SciTech Connect (OSTI)

    Gross, R.E.

    1992-04-01

    K-Reactor's number one GM diesel (GM-lK) suffered recurrent, premature piston pin bushing failures between July 1990 and January 1991. These failures raised a concern that the engine's original design capabilities were being exceeded. Were we asking old engines to do too much by powering 1200 kw (continuous) rated electrical generators Was excessive wear of the piston pin bushings a result of having exceeded the engine's capabilities (overload), or were the recent failures a direct result of poor quality, poor design, or defective replacement parts Considering the engine's overall performance for the past 30 years, during which an engine failure of this nature had never occurred, and the fact that 1200 kw was approximately 50% of the engine's original tested capability, Reactor Engineering did not consider it likely that an overloaded engine caused bushing failures. What seemed more plausible was that the engine's failure to perform was caused by deficiencies in, or poor quality of, replacement parts.The following report documents: (1) the results of K-Reactor EDG failure analysis; (2) correlation of P- and C-Reactor GM diesel teardowns; (3) the engine rebuild to blueprint specification; (4) how the engine was determined ready for test; (5) testing parameters that were developed; (6) a summary of test results and test insights; (7) how WSRC determined engine operation was acceptable; (8) independent review of 1200 kw operational data; (9) approval of the engines' 12OOkw continuous rating.

  12. Fabrication of small-orifice fuel injectors for diesel engines.

    SciTech Connect (OSTI)

    Woodford, J. B.; Fenske, G. R.

    2005-04-08

    Diesel fuel injector nozzles with spray hole diameters of 50-75 {micro}m have been fabricated via electroless nickel plating of conventionally made nozzles. Thick layers of nickel are deposited onto the orifice interior surfaces, reducing the diameter from {approx}200 {micro}m to the target diameter. The nickel plate is hard, smooth, and adherent, and covers the orifice interior surfaces uniformly.

  13. Natural Oils - The Next Generation of Diesel Engine Lubricants...

    Office of Environmental Management (EM)

    Systems * Catalyst Compatible Engine Oil Aftertreatment Poisoning * Efficiency and ... Oxalic Acid Wash From "Future Engine Oil Trends", Filter Technology Workshop, Stefan ...

  14. Cold starting capabilities of petroleum and syntehetic lubricants in heavy-duty diesel engines

    SciTech Connect (OSTI)

    Margeson, M.A.; Belmesch, B.J. )

    1989-01-01

    The objective of the work described in this paper was to compare the cold weather starting ability of diesel engines lubricated with SAE 15W-40 petroleum and SAE 5W-30 synthetic motor oil. Laboratory bench tests were used to compare rhelogical features such as borderline pumping temperature and cold cranking simulator profiles. A cold box provided a well controlled environment in which cranking and starting studies were carried out on the two oils in a turbocharged diesel engine. The SAE 5W-30 synthetic exhibited higher cranking speeds, lower starter amperage draw and immediate oil pressure readings when compared to the SAE l5W-40 petroleum. The SAE 5W-30 synthetic oil was safely started at {minus} l0 {sup 0}F oil temperature without auxiliary heaters. The comparative cylinder turbocharged diesel engines representing conditions commonly found in the commercial and off-highway sectors, These studies indicate that combining high capacity cold cranking amperage batteries, high pressure ether aid injection, and SAE 5W-30 synthetic oil resulted in a system that safely starts diesel engines down to actual oil temperatures of at least {minus} 10 {sup 0}F.

  15. A flexible system for the simulation of turbocharged diesel engines and turbocharging systems

    SciTech Connect (OSTI)

    Bulaty, T.; Codan, E.; Skopil, M.

    1996-12-31

    A fully flexible simulation system enables substitution of the conventional tests performed on turbocharged diesel engines. The supercharging systems can be calculated either by filling and emptying or by the differential method for 1-D unsteady flow during steady-state or transient operation. During sophisticated simulations, some conservation problems were observed. Their theoretical explanation and a practical solution are presented.

  16. The Detroit Diesel DELTA Engine for Light Trucks and SUVs - Year 2000 Update

    SciTech Connect (OSTI)

    Nabil S. Hakim; Charles E. Freese; Stanley P. Miller

    2000-06-19

    Detroit Diesel Corporation (DDC) is developing the DELTA 4.0L V6 engine, specifically for the North American light truck market. This market poses unique requirements for a diesel engine, necessitating a clean sheet engine design. DELTA was developed from a clean sheet of paper, with the first engine firing just 228 days later. The process began with a Quality Function Deployment (QFD) analysis, which prioritized the development criteria. The development process integrated a co-located, fully cross-functional team. Suppliers were fully integrated and maintained on-site representation. The first demonstration vehicle moved under its own power 12 weeks after the first engine fired. It was demonstrated to the automotive press 18 days later. DELTA has repeatedly demonstrated its ability to disprove historical North American diesel perceptions and compete directly with gasoline engines. This paper outlines the Generation 0.0 development process and briefly defines the engine. A brief indication of the Generation 0.5 development status is given.

  17. Diesel fuel component contribution to engine emissions and performance. Final report

    SciTech Connect (OSTI)

    Erwin, J.; Ryan, T.W. III; Moulton, D.S.

    1994-11-01

    Contemporary diesel fuel is a blend of several refinery streams chosen to meet specifications. The need to increase yield of transportation fuel from crude oil has resulted in converting increased proportions of residual oil to lighter products. This conversion is accomplished by thermal, catalytic, and hydrocracking of high molecular weight materials rich in aromatic compounds. The current efforts to reformulate California diesel fuel for reduced emissions from existing engines is an example of another driving force affecting refining practice: regulations designed to reduce exhaust emissions. Although derived from petroleum crude oil, reformulated diesel fuel is an alternative to current specification-grade diesel fuel, and this alternative presents opportunities and questions to be resolved by fuel and engine research. Various concerned parties have argued that regulations for fuel reformulation have not been based on an adequate data base. Despite numerous studies, much ambiguity remains about the relationship of exhaust parameters to fuel composition, particularly for diesel fuel. In an effort to gather pertinent data, the automobile industry and the oil refiners have joined forces in the Air Quality Improvement Research Program (AUTO/OIL) to address this question for gasoline. The objective of that work is to define the relationship between gasoline composition and the magnitude and composition of the exhaust emissions. The results of the AUTO/OEL program will also be used, along with other data bases, to define the EPA {open_quotes}complex model{close_quotes} for reformulated gasolines. Valuable insights have been gained for compression ignition engines in the Coordinating Research Council`s VE-1 program, but no program similar to AUTO/OIL has been started for diesel fuel reformulation. A more detailed understanding of the fuel/performance relationship is a readily apparent need.

  18. Fast-regenerable sulfur dioxide adsorbents for diesel engine emission control

    DOE Patents [OSTI]

    Li, Liyu [Richland, WA; King, David L [Richland, WA

    2011-03-15

    Disclosed herein are sorbents and devices for controlling sulfur oxides emissions as well as systems including such sorbents and devices. Also disclosed are methods for making and using the disclosed sorbents, devices and systems. In one embodiment the disclosed sorbents can be conveniently regenerated, such as under normal exhaust stream from a combustion engine, particularly a diesel engine. Accordingly, also disclosed are combustion vehicles equipped with sulfur dioxide emission control devices.

  19. Performance of a High Speed Indirect Injection Diesel Engine with Poultry Fat Bio-Diesel

    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.

  20. Active Diesel Emission Control Systems | Department of Energy

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

    Systems Active Diesel Emission Control Systems 2004 Diesel Engine Emissions Reduction (DEER) Conferencen Presentation: RYPOS Active Diesel Emission Control Systems ...

  1. Development of the DDA 8. 2L diesel engine for 1988 emission standards

    SciTech Connect (OSTI)

    Winsor, R.E.; Wheeler, C.L.

    1988-01-01

    The emission development performed to meet 1988 Federal and California emission standards with a four-stroke direct-injection V-8 diesel engine of 8.2L displacement is described. On the naturally aspirated engine the major concern was meeting particulate and lug smoke standards at low NO/sub x/ levels. Acceleration smoke and particulate emission reduction was necessary on the turbocharged engine. The performance and emission goals were met by modifying the unit injectors and pistons of both naturally aspirated and turbocharged engines.

  2. Achieving High-Effiency Clean Ccombustion in Diesel Engines ...

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

    Engine Development of ADECS to Meet 2010 Emission Levels: Optimization of NOx, NH3 and Fuel Consumption Using High and Low Engine-Out NOx Calibrations Biodiesel Research Update

  3. ULEV potential of a DI/TCI diesel passenger car engine operated on dimethyl ether

    SciTech Connect (OSTI)

    Kapus, P.E.; Cartellieri, W.P.

    1995-12-31

    This paper describes a feasibility test program on a 2 liter, 4 cylinder DI/TCI passenger car engine operated on the new alternative fuel Dimethyl Ether (DME) with the aim of demonstrating its potential of meeting ULEV (ultra low emission vehicle) emissions (0.2 g/mi NOx in the FTP 75 test cycle) when installed in a full size passenger car. Special attention is drawn to the fuel injection equipment (FIE) as well as combustion system requirements towards the reduction of NOx and combustion noise while keeping energetic fuel consumption at the level of he baseline DI/TCI diesel engine. FIE and combustion system parameters were optimized on the steady state dynamometer by variation of a number of parameters, such as rate of injection, number of nozzle holes, compression ratio, piston bowl shape and exhaust gas recirculation. The paper presents engine test results achieved with DME under various operating conditions and compares these results to those achieved with the diesel version of the same engine.The FTP 75 cycle results were projected from steady state engine maps using a vehicle simulation program taking into account vehicle data and road resistance data of a given vehicle.The cycle results are also compared to actual chassis dynamometer results achieved with the diesel version of the same engine installed in the same vehicle.the passenger car DI/TCI engine adapted for and operated on DME shows very promising results with respect to meeting ULEV NOx emissions without any soot emissions and without the need for a DENOX catalyst. DME fuel consumption on energy basis can be kept very close to the DI diesel value. An oxidation catalyst will be necessary to meet the stringent CO and HC ULEV emission limits.

  4. Comparative urban drive cycle simulations of light-duty hybrid vehicles with gasoline or diesel engines and emissions controls

    SciTech Connect (OSTI)

    Gao, Zhiming; Daw, C Stuart; Smith, David E

    2013-01-01

    Electric hybridization is a very effective approach for reducing fuel consumption in light-duty vehicles. Lean combustion engines (including diesels) have also been shown to be significantly more fuel efficient than stoichiometric gasoline engines. Ideally, the combination of these two technologies would result in even more fuel efficient vehicles. However, one major barrier to achieving this goal is the implementation of lean-exhaust aftertreatment that can meet increasingly stringent emissions regulations without heavily penalizing fuel efficiency. We summarize results from comparative simulations of hybrid electric vehicles with either stoichiometric gasoline or diesel engines that include state-of-the-art aftertreatment emissions controls for both stoichiometric and lean exhaust. Fuel consumption and emissions for comparable gasoline and diesel light-duty hybrid electric vehicles were compared over a standard urban drive cycle and potential benefits for utilizing diesel hybrids were identified. Technical barriers and opportunities for improving the efficiency of diesel hybrids were identified.

  5. A Multicomponent Blend as a Diesel Fuel Surrogate for Compression Ignition Engine Applications

    SciTech Connect (OSTI)

    Pei, Yuanjiang; Mehl, Marco; Liu, Wei; Lu, Tianfeng; Pitz, William J.; Som, Sibendu

    2015-05-12

    A mixture of n-dodecane and m-xylene is investigated as a diesel fuel surrogate for compression ignition engine applications. Compared to neat n-dodecane, this binary mixture is more representative of diesel fuel because it contains an alkyl-benzene which represents an important chemical class present in diesel fuels. A detailed multi-component mechanism for n-dodecane and m-xylene was developed by combining a previously developed n-dodecane mechanism with a recently developed mechanism for xylenes. The xylene mechanism is shown to reproduce experimental ignition data from a rapid compression machine and shock tube, speciation data from the jet stirred reactor and flame speed data. This combined mechanism was validated by comparing predictions from the model with experimental data for ignition in shock tubes and for reactivity in a flow reactor. The combined mechanism, consisting of 2885 species and 11754 reactions, was reduced to a skeletal mechanism consisting 163 species and 887 reactions for 3D diesel engine simulations. The mechanism reduction was performed using directed relation graph (DRG) with expert knowledge (DRG-X) and DRG-aided sensitivity analysis (DRGASA) at a fixed fuel composition of 77% of n-dodecane and 23% m-xylene by volume. The sample space for the reduction covered pressure of 1 – 80 bar, equivalence ratio of 0.5 – 2.0, and initial temperature of 700 – 1600 K for ignition. The skeletal mechanism was compared with the detailed mechanism for ignition and flow reactor predictions. Finally, the skeletal mechanism was validated against a spray flame dataset under diesel engine conditions documented on the Engine Combustion Network (ECN) website. These multi-dimensional simulations were performed using a Representative Interactive Flame (RIF) turbulent combustion model. Encouraging results were obtained compared to the experiments with regards to the predictions of ignition delay and lift-off length at different ambient temperatures.

  6. Recycled waste oil: A fuel for medium speed diesel engines?

    SciTech Connect (OSTI)

    Cheng, A.B.L.; Poynton, W.A.; Howard, J.G.

    1996-12-31

    This paper describes the exploratory engine trials that Mirrlees Blackstone has undertaken to investigate the effect of fueling an engine using waste oil derived from used lubricants. The effect on the engine`s mechanical components, and thermal performance are examined, and the steps taken to overcome problems are discussed. The proposed engine is sited within the Research and Development facilities, housed separately from the manufacturing plant. The unit is already capable of operating on two different types of fuel with single engine set up. It is a 3 cylinder, 4-stroke turbocharged direct injection engine mounted on an underbase and it operates at 600 rpm, 15.0 bar B.M.E.P. (Brake Mean Effective Pressure). It is a mature engine, built {approximately} 20 years previously, and used for emergency stand-by duties in the company`s powerhouse. The test engine is coupled to an alternator and the electricity generated is fed to the national grid. Initial samples of treated fuel oil, analyzed by an independent oil analysis consultant, indicated that the fuel oil does not correspond to a normal fuel oil. They contained high concentrations of trace elements (i.e. calcium, phosphorus, lead, aluminum and silicon) which was consistent with sourcing from waste lubricating oils. The fuel oil was considered to be too severe for use in an engine.

  7. Glow Plug Integrated Piezo-Ceramic Combustion Sensor for Diesel...

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

    Glow Plug Integrated Piezo-Ceramic Combustion Sensor for Diesel Engines Glow Plug Integrated Piezo-Ceramic Combustion Sensor for Diesel Engines 2005 Diesel Engine Emissions ...

  8. Biodiesel Emissions Testing with a Modern Diesel Engine - Equipment Only: Cooperative Research and Development Final Report, CRADA Number CRD-10-399

    SciTech Connect (OSTI)

    Williams, A.

    2013-06-01

    To evaluate the emissions and performance impact of biodiesel in a modern diesel engine equipped with a diesel particulate filter. This testing is in support of the Non-Petroleum Based Fuels (NPBF) 2010 Annual Operating Plan (AOP).

  9. Air mass flow estimation in turbocharged diesel engines from in-cylinder pressure measurement

    SciTech Connect (OSTI)

    Desantes, J.M.; Galindo, J.; Guardiola, C.; Dolz, V.

    2010-01-15

    Air mass flow determination is needed for the control of current internal combustion engines. Current methods are based on specific sensors (as hot wire anemometers) or indirect estimation through manifold pressure. With the availability of cylinder pressure sensors for engine control, methods based on them can be used for replacing or complementing standard methods. Present paper uses in cylinder pressure increase during the intake stroke for inferring the trapped air mass. The method is validated on two different turbocharged diesel engines and compared with the standard methods. (author)

  10. Reformulated diesel fuel

    DOE Patents [OSTI]

    McAdams, Hiramie T [Carrollton, IL; Crawford, Robert W [Tucson, AZ; Hadder, Gerald R [Oak Ridge, TN; McNutt, Barry D [Arlington, VA

    2006-03-28

    Reformulated diesel fuels for automotive diesel engines which meet the requirements of ASTM 975-02 and provide significantly reduced emissions of nitrogen oxides (NO.sub.x) and particulate matter (PM) relative to commercially available diesel fuels.

  11. Synergies of PCCI-Type Combustion and Lean NOx Trap Catalysis for Diesel Engines

    SciTech Connect (OSTI)

    Parks, II, James E; Prikhodko, Vitaly Y; Kass, Michael D; Huff, Shean P

    2008-01-01

    It is widely recognized that future NOx and PM emission targets for diesel engines cannot be met solely via advanced combustion over the full engine drive cycle. Therefore some combination of advanced combustion methodology with an aftertreatment technology will be required. In this study, NOx reduction, fuel efficiency, and regeneration performance of lean NOx trap (LNT) were evaluated for four operating conditions. The combustion approaches included baseline engine operation with and without EGR, two exhaust enrichment methods (post injection and delayed injection), and one advanced combustion mode to enable high efficiency clean combustion (HECC). A 1.7 liter 4-cylinder diesel engine was operated under five conditions, which represent key interest points for light-duty diesel operation. At the low load setting the exhaust temperature was too low to enable LNT regeneration and oxidation; however, HECC (low NOx) was achievable. HECC was also reached under more moderate loads and the exhaust temperatures were high enough to enable even further NOx reductions by the LNT. At high loads HECC becomes difficult but the LNT performance improves and acceptable regeneration can be met with enrichment methodologies.

  12. Diesel Engine CO2 and SOx Emission Compliance Strategy for the Royal Navy (RN) and Royal Fleet Auxiliary (RFA) Flotillas

    Broader source: Energy.gov [DOE]

    Poster presentation from the 2007 Diesel Engine-Efficiency & Emissions Research Conference (DEER 2007). 13-16 August, 2007, Detroit, Michigan. Sponsored by the U.S. Department of Energy's (DOE) Office of FreedomCAR and Vehicle Technologies (OFCVT).

  13. Fuel Efficiency and Emissions Optimization of Heavy-Duty Diesel Engines using Model-Based Transient Calibration

    Broader source: Energy.gov [DOE]

    Presentation given at the 2007 Diesel Engine-Efficiency & Emissions Research Conference (DEER 2007). 13-16 August, 2007, Detroit, Michigan. Sponsored by the U.S. Department of Energy's (DOE) Office of FreedomCAR and Vehicle Technologies (OFCVT).

  14. Improving Diesel Engine Sweet-spot Efficiency and Adapting it...

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

    Poster presented at the 16th Directions in Engine-Efficiency and Emissions Research (DEER) Conference in Detroit, MI, September 27-30, 2010. p-18yan.pdf (213.42 KB) More Documents ...

  15. Diesel Engine Waste Heat Recovery Utilizing Electric Turbocompound Technology

    SciTech Connect (OSTI)

    Hopman, Ulrich,; Kruiswyk, Richard W.

    2005-07-05

    Caterpillar's Technology & Solutions Division conceived, designed, built and tested an electric turbocompound system for an on-highway heavy-duty truck engine. The heart of the system is a unique turbochargerr with an electric motor/generator mounted on the shaft between turbine and compressor wheels. When the power produced by the turbocharger turbine exceeds the power of the compressor, the excess power is converted to electrical power by the generator on the turbo shaft; that power is then used to help turn the crankshaft via an electric motor mounted in the engine flywheel housing. The net result is an improvement in engine fuel economy. The electric turbocompound system provides added control flexibility because it is capable of varying the amount of power extracted from the exhaust gases, thus allowing for control of engine boost. The system configuration and design, turbocharger features, control system development, and test results are presented.

  16. Coal-water-slurry autoignition in a high-speed Detroit diesel engine

    SciTech Connect (OSTI)

    Schwalb, J.A.; Ryan, T.W. III.; Kakwani, R.M.; Winsor, R.E.

    1994-10-01

    Autoignition of coal-water-slurry (CWS) fuel in a two-stroke engine operating at 1900 RPM has been achieved. A Pump-Line-Nozzle (PLN) injection system, delivering 400mm{sup 3} injection of CWS, was installed in one modified cylinder of a Detroit Diesel Corporation (DDC) 8V-149TI engine, while the other seven cylinders remained configured for diesel fuel. Coal Combustion was sustained by maintaining high gas and surface temperatures with a combination of hot residual gases, warm inlet air admission, ceramic insulated components and increased compression ratio. The coal-fueled cylinder generated 85kW indicated power (80 percent of rated power), and lower NO{sub x} levels with a combustion efficiency of 99.2 percent. 6 refs., 15 figs., 4 tabs.

  17. Intercooling effects of methanol on turbocharged diesel engine performance and exhaust emissions

    SciTech Connect (OSTI)

    Saito, T.; Daisho, Y.; Aoki, Y.; Kawase, N.

    1984-01-01

    From the viewpoint of utilizing methanol fuel in an automotive turbocharged direct-injection diesel engine, an intercooling system supplying liquid methanol has been devised and its effects on engine performance and exhaust gas emissions have been investigated. With an electronically controlled injector in this system, methanol as a supplementary fuel to diesel fuel can be injected into the intake pipe in order to intercool a hot air charge compressed by the turbocharger. It has been confirmed that especially at heavy load conditions, methanol-intercooling can yield a higher thermal efficiency, and lower nox and smoke emissions simultaneously, compared with three other cases without using methanol: natural aspiration and the cases with and without an ordinary intercooler. However, methanol fueling must be avoided at lower loads since sacrifices in efficiency and hydrocarbon emissions are involved.

  18. Investigation of methyl decanoate combustion in an optical direct-injection diesel engine

    SciTech Connect (OSTI)

    Cheng, A. S.; Dumitrescu, Cosmin E.; Mueller, Charles J.

    2014-11-24

    In this study, an optically accessible heavy-duty diesel engine was used to investigate the impact of methyl decanoate (MD) on combustion and emissions. A specific goal of the study was to determine if MD could enable soot-free leaner-lifted flame combustion (LLFC) – a mode of mixing-controlled combustion associated with fuel-air equivalence ratios below approximately two. An ultra-low sulfur diesel certification fuel (CF) was used as the baseline fuel, and experiments were conducted at two fuel-injection pressures with three levels of charge-gas dilution. In addition to conventional pressure-based and engine-out emissions measurements, exhaust laser-induced incandescence, in-cylinder natural luminosity (NL), and in-cylinder chemiluminescence (CL) diagnostics were used to provide detailed insight into combustion processes.

  19. Investigation of methyl decanoate combustion in an optical direct-injection diesel engine

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Cheng, A. S.; Dumitrescu, Cosmin E.; Mueller, Charles J.

    2014-11-24

    In this study, an optically accessible heavy-duty diesel engine was used to investigate the impact of methyl decanoate (MD) on combustion and emissions. A specific goal of the study was to determine if MD could enable soot-free leaner-lifted flame combustion (LLFC) – a mode of mixing-controlled combustion associated with fuel-air equivalence ratios below approximately two. An ultra-low sulfur diesel certification fuel (CF) was used as the baseline fuel, and experiments were conducted at two fuel-injection pressures with three levels of charge-gas dilution. In addition to conventional pressure-based and engine-out emissions measurements, exhaust laser-induced incandescence, in-cylinder natural luminosity (NL), and in-cylindermore » chemiluminescence (CL) diagnostics were used to provide detailed insight into combustion processes.« less

  20. Fate of SO{sub 2} During Plasma Treatment of Diesel Engine Exhaust

    SciTech Connect (OSTI)

    Brusasco, R.M.; Merritt, B.T.; Vogtlin, G.E.

    1999-10-25

    Several catalytic aftertreatment technologies rely on the conversion of NO to NO{sub 2} to achieve efficient reduction of NO{sub x} and particulates in diesel engine exhaust. These technologies require low sulfur fuel because the catalyst component that is active in converting NO to NO{sub 2} is also active in converting SO{sub 2} to SO{sub 3}. A non-thermal plasma can be used for the selective partial oxidation of NO to NO{sub 2} in the gas-phase under diesel engine exhaust conditions. This paper discusses how a non-thermal plasma can efficiently oxidize NO to NO{sub 2} without oxidizing SO{sub 2} to SO{sub 3}. It is shown that the presence of hydrocarbons in the plasma is essential for enhancing the selective partial oxidation of NO and suppressing the oxidation of SO{sub 2}.

  1. Study of fuel consumption and cooling system in low heat rejection turbocharged diesel engines

    SciTech Connect (OSTI)

    Taymaz, I.; Gur, M.; Cally, I.; Mimaroglu, A.

    1998-07-01

    In a conventional internal combustion engine, approximately one-third of total fuel input energy is converted to useful work. Since the working gas in a practical engine cycle is not exhausted at ambient temperature, a major part of the energy is lost with the exhaust gases. In addition another major part of energy input is rejected in the form of heat via the cooling system. If the energy normally rejected to the coolant could be recovered instead on the crankshaft as useful work, then a substantial improvement in fuel economy would result. At the same time, the cooling water, antifreeze, thermostat, radiator, water pump, cooling fan, and associated hoses and clamps could be eliminated. A new trend in the field of internal combustion engines is to insulate the heat transfer surfaces such as the combustion chamber, cylinder wall, cylinder head, piston and valves by ceramic insulating materials for the improvement of engine performance and elimination of cooling system. In this study, the effect of insulated heat transfer surfaces on direct injected and turbocharged diesel engine fuel consumption and cooling system were investigated. The research engine was a four-stroke, direct injected, six cylinder, turbocharged and intercooled diesel engine. This engine was tested at different speeds and loads conditions without coating. Then, combustion chamber surfaces, cylinder head, valves and piston crown faces was coated with ceramic materials. Ceramic layers were made of CaZrO{sub 3} and MgZrO{sub 3} and plasma coated onto base of the NiCrAl bond coat. The ceramic coated research engine was tested at the same operation conditions as the standard (without coating) engine. The results indicate a reduction in fuel consumption and heat losses to engine cooling system of the ceramic coated engine.

  2. Attenuating Diesel Engine Emissions | U.S. DOE Office of Science (SC)

    Office of Science (SC) Website

    Attenuating Diesel Engine Emissions Laboratory Policy (LP) LP Home About Laboratory Appraisal Process Laboratory Planning Process Laboratory Directed Research and Development (LDRD) Frequently Asked Questions Impact Legislative History Program Contacts Management & Operating (M&O) Contracts Technology Transfer Strategic Partnership Projects (SPP) Contact Information Laboratory Policy U.S. Department of Energy SC-32/Forrestal Building 1000 Independence Ave., SW Washington, DC 20585 P:

  3. Characterization and control of exhaust gas from diesel engine firing coal-water mixture

    SciTech Connect (OSTI)

    Samuel, E.A.; Gal, E.; Mengel, M.; Arnold, M.

    1990-03-01

    Exhaust from the GE-TS single cylinder diesel engine, fitted with hardened metal, and diamond-tipped metal fuel injection nozzles, and firing coal-water mixture (CWM) has been characterized with respect to gas composition, particulate size distribution, and particulate filtration characteristics. The measured flue gas compositions are roughly in keeping with results from combustion calculations. The time variations of the hydrocarbon, CO, and NO[sub x] concentrations are also understood in terms of known reaction mechanisms.

  4. Characterization and control of exhaust gas from diesel engine firing coal-water mixture

    SciTech Connect (OSTI)

    Samuel, E.A.; Gal, E.; Mengel, M.; Arnold, M.

    1990-03-01

    Exhaust from the GE-TS single cylinder diesel engine, fitted with hardened metal, and diamond-tipped metal fuel injection nozzles, and firing coal-water mixture (CWM) has been characterized with respect to gas composition, particulate size distribution, and particulate filtration characteristics. The measured flue gas compositions are roughly in keeping with results from combustion calculations. The time variations of the hydrocarbon, CO, and NO{sub x} concentrations are also understood in terms of known reaction mechanisms.

  5. Commercialization of coal-fired diesel engines for cogeneration and non-utility power markets

    SciTech Connect (OSTI)

    Wilson, R.P.; Rao, K.; Benedek, K.R.; Itse, D.; Parkinson, J.; Kimberley, J.; Balles, E.N.; Benson, C.E.; Smith, C.

    1992-01-01

    The primary objective of this METC project is to established practical, durable components compatible with clean coal slurry fuel and capable of low emissions. The components will be integrated into a coal power system for a 100-hr proof-of-concept test. The goal of this program is to advance the stationary coal-fueled diesel engine to the next plateau of technological readiness, and thus provide the springboard to commercialization.

  6. Commercialization of coal-fired diesel engines for cogeneration and non-utility power markets

    SciTech Connect (OSTI)

    Wilson, R.P.; Rao, K.; Benedek, K.R.; Itse, D.; Parkinson, J.; Kimberley, J.; Balles, E.N.; Benson, C.E.; Smith, C.

    1992-12-31

    The primary objective of this METC project is to established practical, durable components compatible with clean coal slurry fuel and capable of low emissions. The components will be integrated into a coal power system for a 100-hr proof-of-concept test. The goal of this program is to advance the stationary coal-fueled diesel engine to the next plateau of technological readiness, and thus provide the springboard to commercialization.

  7. Proof-of-principle test for thermoelectric generator for diesel engines; Final report

    SciTech Connect (OSTI)

    1991-07-26

    In September of 1987, the principals of what is now Hi-Z TECHNOLOGY, INC. applied to the National Bureau of Standards (now National Institute of Standards and Technology, NIST) under the Energy Related Inventions Program. The invention was entitled ``Thermoelectric Generator for Diesel Engines.`` The National Institute of Standards and Technology evaluated the invention and on January 12, 1989 forwarded Recommendation Number 455 to the Department of Energy (DOE). This recommendation informed the DOE that the invention had been selected for recommendation by the NIST for possible funding by the DOE. Following the recommendation of the NIST, the DOE contacted Hi-Z to work out a development program for the generator. A contract for a grant to design, fabricate, and test a Proof-of-Principle exhaust powered thermoelectric generator for Diesel engines was signed October 19, 1989. Hi-Z provided the thermoelectric modules used in the generator as their contribution to the project. The purpose of this Grant Program was to design, build, and test a small-scale, Proof-of-Principle thermoelectric generator for a Diesel engine. 15 figs., 1 tab.

  8. Simulation and control of a HD diesel engine equipped with new EGR technology

    SciTech Connect (OSTI)

    Dekker, H.J.; Sturm, W.L.

    1996-09-01

    A dynamic model of a Heavy Duty (HD) turbocharged and aftercooled diesel engine was developed. The engine was equipped with high pressure diesel injection, a Variable Geometry Turbine (VGT) and an Exhaust Gas Recirculation (EGR) system. This engine was targeted at meeting EURO4 emission requirements. The final emission results were 2.4 g/k Wh NO{sub x} and 0.107 g/kWh particulates for the European 13 mode test. Better than 3.0 g/k Wh NO{sub x} and 0.10 g/k Wh particulates are expected to be characteristic EURO4 emission requirements (approximate year of implementation is 2004). In the design of the EGR system the model provided initial assessments of the properties of this system. Associated engine and turbocharger behavior as well as optimal control strategies were predicted. A transient engine control algorithm was developed using the dynamic engine model. The VGT is closed loop controlled and EGR is shut off during a short time after a load increase. The simulation results were confirmed by actual measurements, demonstrating acceptable transient behavior.

  9. Study of using oxygen-enriched combustion air for locomotive diesel engines

    SciTech Connect (OSTI)

    Poola, R.B.; Sekar, R.; Assanis, D.N.; Cataldi, G.R.

    1996-12-31

    A thermodynamic simulation is used to study the effects of oxygen-enriched intake air on the performance and nitrogen oxide (NO) emissions of a locomotive diesel engine. The parasitic power of the air separation membrane required to supply the oxygen-enriched air is also estimated. For a given constraint on peak cylinder pressure, the gross and net power output of an engine operating under different levels of oxygen enrichment are compared with those obtained when a high-boost turbocharged engine is used. A 4% increase in peak cylinder pressure can result in an increase in net engine power of approximately 13% when intake air with an oxygen content of 28% by volume is used and fuel injection timing is retarded by 4 degrees. When the engine is turbocharged to a higher inlet boost, the same increase in peak cylinder pressure can improve power by only 4%. If part of the significantly higher exhaust enthalpies available as a result of oxygen enrichment are recovered, the power requirements of the air separator membrane can be met, resulting in substantial net power improvements. Oxygen enrichment with its attendant higher combustion temperatures, reduces emissions of particulates and visible smoke but increases NO emissions (by up to three times at 26% oxygen content). Therefore, exhaust gas after-treatment and heat recovery would be required if the full potential of oxygen enrichment for improving the performance of locomotive diesel engines is to be realized.

  10. Investigation of Bio-Diesel Fueled Engines under Low-Temperature Combustion Strategies

    SciTech Connect (OSTI)

    Chia-fon F. Lee; Alan C. Hansen

    2010-09-30

    In accordance with meeting DOE technical targets this research was aimed at developing and optimizing new fuel injection technologies and strategies for the combustion of clean burning renewable fuels in diesel engines. In addition a simultaneous minimum 20% improvement in fuel economy was targeted with the aid of this novel advanced combustion system. Biodiesel and other renewable fuels have unique properties that can be leveraged to reduce emissions and increase engine efficiency. This research is an investigation into the combustion characteristics of biodiesel and its impacts on the performance of a Low Temperature Combustion (LTC) engine, which is a novel engine configuration that incorporates technologies and strategies for simultaneously reducing NOx and particulate emissions while increasing engine efficiency. Generating fundamental knowledge about the properties of biodiesel and blends with petroleum-derived diesel and their impact on in-cylinder fuel atomization and combustion processes was an important initial step to being able to optimize fuel injection strategies as well as introduce new technologies. With the benefit of this knowledge experiments were performed on both optical and metal LTC engines in which combustion and emissions could be observed and measured under realistic conditions. With the aid these experiments and detailed combustion models strategies were identified and applied in order to improve fuel economy and simultaneously reduce emissions.

  11. Efficiency evaluation of the DISC (direct-injection stratified charge), DHC (dilute homogeneous charge), and DI Diesel engines (direct-injection diesel)

    SciTech Connect (OSTI)

    Hane, G.J.

    1983-09-01

    The thermodynamic laws governing the Otto and diesel cycle engines and the possible approaches that might be taken to increase the delivered efficiency of the reciprocating piston engine are discussed. The generic aspects of current research are discussed and typical links between research and the technical barriers to the engines' development are shown. The advanced engines are discussed individually. After a brief description of each engine and its advantages, the major technical barriers to their development are discussed. Also included for each engine is a discussion of examples of the linkages between these barriers and current combustion and thermodynamic research. For each engine a list of questions is presented that have yet to be resolved and could not be resolved within the scope of this study. These questions partially indicate the limit to the state of knowledge regarding efficiency characteristics of the advanced engine concepts. The major technical barriers to each of the engines and their ranges of efficiency improvement are summarized.

  12. An application of a combined charging system on a turbocharged diesel engine

    SciTech Connect (OSTI)

    Lee, D.I.; Her, K.; Chang, N.

    1984-01-01

    To improve the low-speed torque characteristics and the fuel economy and to reduce the exhaust gaseous emissions from a 10-liter, turbocharged diesel engines, charge air cooling with a resonant intake system has been introduced. The use of an air-to-air inter-cooler mounted in front of the radiator results in increasing the charge air density and the resonant intake system offers a high volumetric charging efficiencies at low-speed region. Actual engine data show an increase in power of 14 percent, the improvement of specific fuel consumption by 3-7 percent and a decrease in NOx emissions by 33 percent.

  13. Hot isostatically pressed reaction bonded silicon nitride prechambers for the diesel engine

    SciTech Connect (OSTI)

    Gasthuber, H.H. ); Heinrich, J.G.; Huber, J.A.; Steiner, M. ); Bunk, W. )

    1989-12-01

    The aim of this work was to design a silicon nitride prechamber for a diesel engine in the 2- to 3-L range, to calculate temperature and stress distributions, and to test these ceramic prechambers in a fired engine under all working conditions. Another goal was the development of a processing technique for mass production of dense silicon nitride prechambers. For the production of components in narrow tolerances without postmachining, injection molding of silicon powder, dewaxing, nitriding, encapsulation, and postdensification by hot isostatic pressing was decided to be the most suitable procedure.

  14. Hot isostatically passed reaction-bonded silicon nitride prechambers for the diesel engine

    SciTech Connect (OSTI)

    Gasthurber, H.H. ); Heinrich, J.G.; Huber, J.A.; Steiner, M. ); Bunk, W. , Koeln )

    1989-12-01

    The aim of the work presented in this paper, was to design a silicon nitride prechamber for a diesel engine in the 2- to 3-L range, to calculate temperature and stress distributions, and to test these ceramic prechambers in a fired engine under all working conditions. Another goal was the development of a processing technique for mass production of dense silicon nitride prechambers. For the production of components in narrow tolerances without postmachining, injection molding of silicon powder, dewaxing, nitriding, encapsulation, and postdensification by hot isostatic pressing was decided to be the most suitable procedure.

  15. Control method for turbocharged diesel engines having exhaust gas recirculation

    SciTech Connect (OSTI)

    Kolmanovsky, I.V.; Jankovic, M.J.; Jankovic, M.

    2000-03-14

    A method of controlling the airflow into a compression ignition engine having an EGR and a VGT. The control strategy includes the steps of generating desired EGR and VGT turbine mass flow rates as a function of the desired and measured compressor mass airflow values and exhaust manifold pressure values. The desired compressor mass airflow and exhaust manifold pressure values are generated as a function of the operator-requested fueling rate and engine speed. The EGR and VGT turbine mass flow rates are then inverted to corresponding EGR and VGT actuator positions to achieve the desired compressor mass airflow rate and exhaust manifold pressure. The control strategy also includes a method of estimating the intake manifold pressure used in generating the EGR valve and VGT turbine positions.

  16. Ionic Liquids as Novel Lubricants and Additives for Diesel Engine Applications

    SciTech Connect (OSTI)

    Qu, Jun; Blau, Peter Julian; Dai, Sheng; Luo, Huimin; Meyer III, Harry M

    2009-01-01

    The lubricating properties of two ionic liquids with the same anion but different cations, one ammonium IL [C8H17]3NH.Tf2N and one imidazolium IL C10mim.Tf2N, were evaluated both in neat form and as oil additives. Experiments were conducted using a standardized reciprocating sliding test using a segment of a Cr-plated diesel engine piston ring against a grey cast iron flat specimen with simulated honing marks as on the engine cylinder liner. The selected ionic liquids were benchmarked against conventional hydrocarbon oils. Substantial friction and wear reductions, up to 55% and 34%, respectively, were achieved for the neat ionic liquids compared to a fully-formulated 15W40 engine oil. Adding 5 vol% ILs into mineral oil has demonstrated significant improvement in the lubricity. One blend even outperformed the 15W40 engine oil with 9% lower friction and 34% less wear. Lubrication regime modeling, worn surface morphology examination, and surface chemical analysis were conducted to help understand the lubricating mechanisms for ionic liquids. Results suggest great potential for using ionic liquids as base lubricants or lubricant additives for diesel engine applications.

  17. Diesel engine experiments with oxygen enrichment, water addition and lower-grade fuel

    SciTech Connect (OSTI)

    Sekar, R.R.; Marr, W.W.; Cole, R.L.; Marciniak, T.J. ); Schaus, J.E. )

    1990-01-01

    The concept of oxygen enriched air applied to reciprocating engines is getting renewed attention in the context of the progress made in the enrichment methods and the tougher emissions regulations imposed on diesel and gasoline engines. An experimental project was completed in which a direct injection diesel engine was tested with intake oxygen levels of 21% -- 35%. Since an earlier study indicated that it is necessary to use a cheaper fuel to make the concept economically attractive, a less refined fuel was included in the test series. Since a major objection to the use of oxygen enriched combustion air had been the increase in NO{sub x} emissions, a method must be found to reduce NO{sub x}. Introduction of water into the engine combustion process was included in the tests for this purpose. Fuel emulsification with water was the means used here even though other methods could also be used. The teat data indicated a large increase in engine power density, slight improvement in thermal efficiency, significant reductions in smoke and particulate emissions and NO{sub x} emissions controllable with the addition of water. 15 refs., 10 figs., 2 tabs.

  18. Diesel Engine Waste Heat Recovery Utilizing Electric Turbocompound Technology

    SciTech Connect (OSTI)

    Gerke, Frank G.

    2001-08-05

    This cooperative program between the DOE Office of Heavy Vehicle Technology and Caterpillar, Inc. is aimed at demonstrating electric turbocompound technology on a Class 8 truck engine. This is a lab demonstration program, with no provision for on-truck testing of the system. The goal is to demonstrate the level of fuel efficiency improvement attainable with the electric turbocompound system. Also, electric turbocompounding adds an additional level of control to the air supply which could be a component in an emissions control strategy.

  19. Application and development of technologies for engine-condition-based maintenance of emergency diesel generators

    SciTech Connect (OSTI)

    Choi, K. H.; Sang, G.; Choi, L. Y. S.; Lee, B. O.

    2012-07-01

    The emergency diesel generator (EDG) of a nuclear power plant has the role of supplying emergency electric power to protect the reactor core system in the event of the loss of offsite power supply. Therefore, EDGs should be subject to periodic surveillance testing to verify their ability to supply specified frequencies and voltages at design power levels within a limited time. To maintain optimal reliability of EDGs, condition monitoring/diagnosis technologies must be developed. Changing from periodic disassemble maintenance to condition-based maintenance (CBM) according to predictions of equipment condition is recommended. In this paper, the development of diagnosis technology for CBM and the application of a diesel engine condition-analysis system are described. (authors)

  20. Investigation of Nitro-Organic Compounds in Diesel Engine Exhaust: Final Report, February 2007 - April 2008

    SciTech Connect (OSTI)

    Dane, J.; Voorhees, K. J.

    2010-06-01

    The National Renewable Energy Laboratory upgraded its ReFUEL engine and vehicle testing facility to speciate unregulated gas-phase emissions. To complement this capability, the laboratory contracted with the Colorado School of Mines (CSM) to study the effects of soy biodiesel fuel and a diesel particle filter (DPF) on emissions of polycyclic aromatic hydrocarbons (PAH) and nitro-polycyclic aromatic hydrocarbons (NPAH). CSM developed procedures to sample diesel particulate matter (PM) emissions from raw and diluted exhaust, with and without a DPF. They also developed improved procedures for extracting PAH and NPAH from the PM and quantifying them with a gas chromatograph-electron monochromator mass spectrometer. The study found the DPF generally reduced PAH emissions by 1 to 3 orders of magnitude. PAH conversion was lowest for B100, suggesting that PAHs were forming in the DPF. Orders of magnitude reductions were also found for NPAH emissions exiting the DPF.

  1. Three-dimensional modeling of diesel engine intake flow, combustion and emissions-II

    SciTech Connect (OSTI)

    Reitz, R.D.; Rutland, C.J.

    1993-09-01

    A three-dimensional computer code, KIVA, is being modified to include state-of-the-art submodels for diesel engine flow and combustion. Improved and/or new submodels which have already been implemented and previously reported are: Wall heat transfer with unsteadiness and compressibility, laminar-turbulent characteristic time combustion with unburned HC and Zeldo`vich NO{sub x}, and spray/wall impingement with rebounding and sliding drops. Progress on the implementation of improved spray drop drag and drop breakup models, the formulation and testing of a multistep kinetics ignition model and preliminary soot modeling results are described in this report. In addition, the use of a block structured version of KIVA to model the intake flow process is described. A grid generation scheme has been developed for modeling realistic (complex) engine geometries, and computations have been made of intake flow in the ports and combustion chamber of a two-intake-valve engine. The research also involves the use of the code to assess the effects of subprocesses on diesel engine performance. The accuracy of the predictions is being tested by comparisons with engine experiments. To date, comparisons have been made with measured engine cylinder pressure, temperature and heat flux data, and the model results are in good agreement with the experiments. Work is in progress that will allow validation of in-cylinder flow and soot formation predictions. An engine test facility is described that is being used to provide the needed validation data. Test results have been obtained showing the effect of injection rate and split injections on engine performance and emissions.

  2. In-Cylinder Fuel Blending of Gasoline/Diesel for Improved Efficiency and Lowest Possible Emissions on a Multi-Cylinder Light-Duty Diesel Engine

    SciTech Connect (OSTI)

    Curran, Scott; Prikhodko, Vitaly Y; Wagner, Robert M; Parks, II, James E; Cho, Kukwon; Sluder, Scott; Kokjohn, Sage; Reitz, Rolf

    2010-01-01

    In-cylinder fuel blending of gasoline/diesel fuel is investigated on a multi-cylinder light-duty diesel engine as a potential strategy to control in-cylinder fuel reactivity for improved efficiency and lowest possible emissions. This approach was developed and demonstrated at the University of Wisconsin through modeling and single-cylinder engine experiments. The objective of this study is to better understand the potential and challenges of this method on a multi-cylinder engine. More specifically, the effect of cylinder-to-cylinder imbalances, heat rejection, and in-cylinder charge motion as well as the potential limitations imposed by real-world turbo-machinery were investigated on a 1.9-liter four-cylinder engine. This investigation focused on one engine condition, 2300 rpm, 4.2 bar brake mean effective pressure (BMEP). Gasoline was introduced with a port-fuel-injection system. Parameter sweeps included gasoline-to-diesel fuel ratio, intake air mixture temperature, in-cylinder swirl number, and diesel start-of-injection phasing. In addition, engine parameters were trimmed for each cylinder to balance the combustion process for maximum efficiency and lowest emissions. An important observation was the strong influence of intake charge temperature on cylinder pressure rise rate. Experiments were able to show increased thermal efficiency along with dramatic decreases in oxides of nitrogen (NOX) and particulate matter (PM). However, indicated thermal efficiency for the multi-cylinder experiments were less than expected based on modeling and single-cylinder results. The lower indicated thermal efficiency is believed to be due increased heat transfer as compared to the model predictions and suggest a need for improved cylinder-to-cylinder control and increased heat transfer control.

  3. Engine-External HC-Dosing for Regeneration of Diesel Particulate Filters for Heavy Duty and NRMM According to Annex XXVII StVZO

    Broader source: Energy.gov [DOE]

    This presentation discusses how a diesel particulate filter can be integrated in the exhaust piping of a heavy-duty engine.

  4. A Study of a Diesel Engine Based Micro-CHP System

    SciTech Connect (OSTI)

    Krishna, C.R.; Andrews, J.; Tutu, N.; Butcher, T.

    2010-08-31

    This project, funded by New York State Energy Research and Development Agency (NYSERDA), investigated the potential for an oil-fired combined heat and power system (micro-CHP system) for potential use in residences that use oil to heat their homes. Obviously, this requires the power source to be one that uses heating oil (diesel). The work consisted of an experimental study using a diesel engine and an analytical study that examined potential energy savings and benefits of micro-CHP systems for 'typical' locations in New York State. A search for a small diesel engine disclosed that no such engines were manufactured in the U.S. A single cylinder engine manufactured in Germany driving an electric generator was purchased for the experimental work. The engine was tested using on-road diesel fuel (15 ppm sulfur), and biodiesel blends. One of the main objectives was to demonstrate the possibility of operation in the so-called HCCI (Homogeneous Charge Compression Ignition) mode. The HCCI mode of operation of engines is being explored as a way to reduce the emission of smoke, and NOx significantly without exhaust treatment. This is being done primarily in the context of engines used in transportation applications. However, it is felt that in a micro-CHP application using a single cylinder engine, such an approach would confer those emission benefits and would be much easier to implement. This was demonstrated successfully by injecting the fuel into the engine air intake using a heated atomizer made by Econox Technologies LLC to promote significant vaporization before entering the cylinder. Efficiency and emission measurements were made under different electrical loads provided by two space heaters connected to the generator in normal and HCCI modes of operation. The goals of the analytical work were to characterize, from the published literature, the prime-movers for micro-CHP applications, quantify parametrically the expected energy savings of using micro-CHP systems

  5. Advanced Diesel Common Rail Injection System for Future Emission Legislation

    Broader source: Energy.gov [DOE]

    2004 Diesel Engine Emissions Reduction (DEER) Conference Presentation: Robert Bosch GMBH Common Rail System Engineering for PC Diesel Systems

  6. DELTA-DIESEL ENGINE LIGHT TRUCK APPLICATION Contract DE-FC05-97OR22606 Final Report

    SciTech Connect (OSTI)

    Hakim, Nabil Balnaves, Mike

    2003-05-27

    DELTA Diesel Engine Light Truck Application End of Contract Report DE-FC05-97-OR22606 EXECUTIVE SUMMARY This report is the final technical report of the Diesel Engine Light Truck Application (DELTA) program under contract DE-FC05-97-OR22606. During the course of this contract, Detroit Diesel Corporation analyzed, designed, tooled, developed and applied the ''Proof of Concept'' (Generation 0) 4.0L V-6 DELTA engine and designed the successor ''Production Technology Demonstration'' (Generation 1) 4.0L V-6 DELTA engine. The objectives of DELTA Program contract DE-FC05-97-OR22606 were to: Demonstrate production-viable diesel engine technologies, specifically intended for the North American LDT and SUV markets; Demonstrate emissions compliance with significant fuel economy advantages. With a clean sheet design, DDC produced the DELTA engine concept promising the following attributes: 30-50% improved fuel economy; Low cost; Good durability and reliability; Acceptable noise, vibration and harshness (NVH); State-of-the-art features; Even firing, 4 valves per cylinder; High pressure common rail fuel system; Electronically controlled; Turbocharged, intercooled, cooled EGR; Extremely low emissions via CLEAN Combustion{copyright} technology. To demonstrate the engine technology in the SUV market, DDC repowered a 1999 Dodge Durango with the DELTA Generation 0 engine. Fuel economy improvements were approximately 50% better than the gasoline engine replaced in the vehicle.

  7. Materials-Enabled High-Efficiency (MEHE) Heavy-Duty Diesel Engines

    SciTech Connect (OSTI)

    Kass, M.; Veliz, M.

    2011-09-30

    The purpose of this Cooperative Research and Development Agreement (CRADA) between UTBattelle, Inc. and Caterpillar, Inc. was to improve diesel engine efficiency by incorporating advanced materials to enable higher combustion pressures and temperatures necessary for improved combustion. The project scope also included novel materials for use in advanced components and designs associated with waste-heat recovery and other concepts for improved thermal efficiency. Caterpillar initially provided ORNL with a 2004 Tier 2 C15 ACERT diesel engine (designed for on-highway use) and two 600 hp motoring dynamometers. The first year of the CRADA effort was focused on establishing a heavy-duty experimental engine research cell. First year activities included procuring, installing and commissioning the cell infrastructure. Infrastructure components consisted of intake air handling system, water tower, exhaust handling system, and cell air conditioning. Other necessary infrastructure items included the fuel delivery system and bottled gas handling to support the analytical instrumentation. The second year of the CRADA focused on commissioning the dynamometer system to enable engine experimentation. In addition to the requirements associated with the dynamometer controller, the electrical system needed a power factor correction system to maintain continuity with the electrical grid. During the second year the engine was instrumented and baseline operated to confirm performance and commission the dynamometer. The engine performance was mapped and modeled according to requirements provided by Caterpillar. This activity was further supported by a Work-for-Others project from Caterpillar to evaluate a proprietary modeling system. A second Work-for-Others activity was performed to evaluate a novel turbocharger design. This project was highly successful and may lead to new turbocharger designs for Caterpillar heavy-duty diesel engines. During the third (and final) year of the CRADA, a

  8. Advanced Petroleum-Based Fuels - Diesel Emissions Project (APBF-DEC): 2,000-Hour Performance of a NOx Adsorber Catalyst and Diesel Particle Filter System for a Medium-Duty, Pick-Up Diesel Engine Platform; Final Report

    SciTech Connect (OSTI)

    Not Available

    2007-03-01

    Presents the results of a 2,000-hour test of an emissions control system consisting of a nitrogen oxides adsorber catalyst in combination with a diesel particle filter, advanced fuels, and advanced engine controls in an SUV/pick-up truck vehicle platform.

  9. Silicon nitride swirl lower-chamber for high power turbocharged diesel engines

    SciTech Connect (OSTI)

    Kamiya, S.; Murachi, M.; Kawamoto, H.; Kato, S.; Kawakami, S.; Suzuki, Y.

    1985-01-01

    This paper describes application of sintered silicon nitride to the swirl lower-chamber in order to improve performance of turbocharged diesel engines. Various stress analyses by finite element method and stress measurements have been applied to determine the design specifications for the component, which compromise brittleness of ceramic materials. Material development was conducted to evaluate strength, fracture toughness, and thermal properties for the sintered bodies. Ceramic injection molding has been employed to fabricate components with large quantities. In the present work. Quality assurance for the components can be made by reliability evaluation methods as well as non-destructive and stress loading inspections. It is found that the engine performance with ceramic component has been increased in the power out put of 9ps as compared to that of conventional engines.

  10. Abrasive wear by coal-fueled diesel engine and related particles

    SciTech Connect (OSTI)

    Ives, L.K. )

    1992-09-01

    The development of commercially viable diesel engines that operate directly on pulverized coal-fuels will require solution to the problem of severe abrasive wear. The purpose of the work described in this report was to investigate the nature of the abrasive wear problem. Analytical studies were carried out to determine the characteristics of the coal-fuel and associated combustion particles responsible for abrasion. Laboratory pinon-disk wear tests were conducted on oil-particle mixtures to determine the relationship between wear rate and a number of different particle characteristics, contact parameters, specimen materials properties, and other relevant variables.

  11. Development of high temperature liquid lubricants for low-heat rejection heavy duty diesel engines

    SciTech Connect (OSTI)

    Wiczynski, T.A.; Marolewski, T.A.

    1993-03-01

    Objective was to develop a liquid lubricant that will allow advanced diesel engines to operate at top ring reversal temperatures approaching 500 C and lubricant sump temperatures approaching 250 C. Base stock screening showed that aromatic esters and diesters has the lowest deposit level, compared to polyol esters, poly-alpha-olefins, or refined mineral oil of comparable viscosity. Classical aryl and alkyl ZDP antiwear additives are ineffective in reducing wear with aromatic esters; the phosphate ester was a much better antiwear additive, and polyol esters are more amenable to ZDP treatment. Zeolites and clays were evaluated for filtration.

  12. Application of oxygen-enriched combustion for locomotive diesel engines. Phase 1

    SciTech Connect (OSTI)

    Poola, R.B.; Sekar, R.R.; Assanis, D.N.

    1996-09-01

    A thermodynamic simulation is used to study the effects of oxygen-enriched intake air on the performance and nitrogen oxide (NO) emissions of a locomotive diesel engine. The parasitic power of the air separation membrane required to supply the oxygen-enriched air is also estimated. For a given constraint on peak cylinder pressure, the gross and net power outputs of an engine operating under different levels of oxygen enrichment are compared with those obtained when a high-boost turbocharged engine is used. A 4% increase in peak cylinder pressure can result in an increase in net engine power of approximately 13% when intake air with an oxygen content of 28% by volume is used and fuel injection timing is retarded by 4 degrees. When the engine is turbocharged to a higher inlet boost, the same increase in peak cylinder pressure improves power by only 4%. If part of the significantly higher exhaust enthalpies available as a result of oxygen enrichment are recovered, the power requirements of the air separator membrane can be met, resulting in substantial net power improvements. Oxygen enrichment reduces particulate and visible smoke emissions but increases NO emissions. However, a combination of retarded fuel injection timing and post-treatment of exhaust gases may be adequate to meet the locomotive diesel engine NO{sub x} standards. Exhaust gas after-treatment and heat recovery would be required to realize the full potential of oxygen enrichment. Economic analysis shows that oxygen-enrichment technology is economically feasible and provides high returns on investment. The study also indicates the strong influence of membrane parasitic requirements and exhaust energy recovery on economic benefits. To obtain an economic advantage while using a membrane with higher parasitic power requirements, it is necessary to recover a part of the exhaust energy.

  13. Wear mechanism and wear prevention in coal-fueled diesel engines

    SciTech Connect (OSTI)

    Schwalb, J.A.; Ryan, T.W.

    1991-10-01

    Coal fueled diesel engines present unique wear problems in the piston ring/cylinder liner area because of their tendency to contaminate the lube-oil with high concentrations of highly abrasive particles. This program involved a series of bench-scale wear tests and engine tests designed to investigate various aspects of the ring/liner wear problem and to make specific recommendations to engine manufacturers as to how to alleviate these problems. The program was organized into tasks, designed to accomplish the following objectives: (1) define the predominant wear mechanisms causing accelerated wear in the ring/liner area; (2) investigate the effectiveness of traditional approaches to wear prevention to prevent wear in coal-fueled engines; (3) further refine information on the most promising approaches to wear prevention; (4) present detailed information and recommendations to engine manufacturers on the most promising approach to wear prevention; (5) present a final report covering the entire program; (6)complete engine tests with a coal-derived liquid fuel, and investigate the effects of the fuel on engine wear and emissions.

  14. Aftertreatment Technologies for Off-Highway Heavy-Duty Diesel Engines

    SciTech Connect (OSTI)

    Kass, M.D.

    2008-07-15

    The objective of this program was to explore a combination of advanced injection control and urea-selective catalytic reduction (SCR) to reduce the emissions of oxides of nitrogen (NOx) and particulate matter (PM) from a Tier 2 off-highway diesel engine to Tier 3 emission targets while maintaining fuel efficiency. The engine used in this investigation was a 2004 4.5L John Deere PowerTechTM; this engine was not equipped with exhaust gas recirculation (EGR). Under the original CRADA, the principal objective was to assess whether Tier 3 PM emission targets could be met solely by increasing the rail pressure. Although high rail pressure will lower the total PM emissions, it has a contrary effect to raise NOx emissions. To address this effect, a urea-SCR system was used to determine whether the enhanced NOx levels, associated with high rail pressure, could be reduced to Tier 3 levels. A key attraction for this approach is that it eliminates the need for a Diesel particulate filter (DPF) to remove PM emissions. The original CRADA effort was also performed using No.2 Diesel fuel having a maximum sulfur level of 500 ppm. After a few years, the CRADA scope was expanded to include exploration of advanced injection strategies to improve catalyst regeneration and to explore the influence of urea-SCR on PM formation. During this period the emission targets also shifted to meeting more stringent Tier 4 emissions for NOx and PM, and the fuel type was changed to ultra-low sulfur Diesel (ULSD) having a maximum sulfur concentration of 15 ppm. New discoveries were made regarding PM formation at high rail pressures and the influences of oxidation catalysts and urea-SCR catalysts. These results are expected to provide a pathway for lower PM and NOx emissions for both off- and on-highway applications. Industrial in-kind support was available throughout the project period. Review of the research results were carried out on a regular basis (annual reports and meetings) followed by

  15. Performance of winter rape (Brassica napus) based fuel mixtures in diesel engines

    SciTech Connect (OSTI)

    Wagner, G.L.; Peterson, C.L.

    1982-01-01

    Winter rape is well adapted to the Palouse region of Northern Idaho and Eastern Washington. Nearly all of the current US production is grown in this region. Yields of 2200 to 2700 kg/ha with 45 percent oil content are common. Even though present production only 2000 to 2500 ha per year, the long history of production and good yields of oil make winter rape the best potential fuel vegetable oil crop for the region. Winter rape oil is more viscous than sunflower oil (50 cSt at 40/sup 0/C for winter rape and 35 cSt at 40/sup 0/C for sunflower oil) and about 17 times more viscous than diesel. The viscosity of the pure oil has been found too high for operation in typical diesel injector systems. Mixtures and/or additives are essential if the oil is to be a satisfactory fuel. Conversely, the fatty acid composition of witer rape oils is such that it is potentially a more favorable fuel because of reduced rates of oxidation and thermal polymerization. This paper will report on results of short and long term engine tests using winter rape, diesel, and commercial additives as the components. Selection of mixtures for long term screening tests was based on laboratory studies which included high temperature oxidation studies and temperature-viscosity data. Fuel temperature has been monitored at the outlet of the injector nozzle on operating engines so that viscosity comparisons at the actual injector temperature can be made. 1 figure, 3 tables.

  16. Production of Diesel Engine Turbocharger Turbine from Low Cost Titanium Powder

    SciTech Connect (OSTI)

    Muth, T. R.; Mayer, R.

    2012-05-04

    Turbochargers in commercial turbo-diesel engines are multi-material systems where usually the compressor rotor is made of aluminum or titanium based material and the turbine rotor is made of either a nickel based superalloy or titanium, designed to operate under the harsh exhaust gas conditions. The use of cast titanium in the turbine section has been used by Cummins Turbo Technologies since 1997. Having the benefit of a lower mass than the superalloy based turbines; higher turbine speeds in a more compact design can be achieved with titanium. In an effort to improve the cost model, and develop an industrial supply of titanium componentry that is more stable than the traditional aerospace based supply chain, the Contractor has developed component manufacturing schemes that use economical Armstrong titanium and titanium alloy powders and MgR-HDH powders. Those manufacturing schemes can be applied to compressor and turbine rotor components for diesel engine applications with the potential of providing a reliable supply of titanium componentry with a cost and performance advantage over cast titanium.

  17. Fuels for Advanced Combustion Engines Research Diesel Fuels: Analysis of Physical and Chemical Properties

    SciTech Connect (OSTI)

    Gallant, Tom; Franz, Jim; Alnajjar, Mikhail; Storey, John Morse; Lewis Sr, Samuel Arthur; Sluder, Scott; Cannella, William C; Fairbridge, Craig; Hager, Darcy; Dettman, Heather; Luecke, Jon; Ratcliff, Matthew A.; Zigler, Brad

    2009-01-01

    The CRC Fuels for Advanced Combustion Engines working group has worked to identify a matrix of research diesel fuels for use in advanced combustion research applications. Nine fuels were specified and formulated to investigate the effects of cetane number aromatic content and 90% distillation fraction. Standard ASTM analyses were performed on the fuels as well as GC/MS and /u1H//u1/u3C NMR analyses and thermodynamic characterizations. Details of the actual results of the fuel formulations compared with the design values are presented, as well as results from standard analyses, such as heating value, viscosity and density. Cetane number characterizations were accomplished by using both the engine method and the Ignition Quality Tester (IQT/sT) apparatus.

  18. Waste heat recovery from adiabatic diesel engines by exhaust-driven Brayton cycles

    SciTech Connect (OSTI)

    Khalifa, H.E.

    1983-12-01

    This report presents an evaluation of Brayton Bottoming Systems (BBS) as waste heat recovery devices for future adiabatic diesel engines in heavy duty trucks. Parametric studies were performed to evaluate the influence of external and internal design parameters on BBS performance. Conceptual design and trade-off studies were undertaken to estimate the optimum configuration, size, and cost of major hardware components. The potential annual fuel savings of long-haul trucks equipped with BBS were estimated. The addition of a BBS to a turbocharged, nonaftercooled adiabatic engine would improve fuel economy by as much as 12%. In comparison with an aftercooled, turbocompound engine, the BBS-equipped turbocharged engine would offer a 4.4% fuel economy advantage. It is also shown that, if installed in tandem with an aftercooled turbocompound engine, the BBS could effect a 7.2% fuel economy improvement. The cost of a mass-produced 38 Bhp BBS is estimated at about $6460 or $170/Bhp. Technical and economic barriers that would hinder the commercial introduction of bottoming systems were identified.

  19. Development of wear-resistant ceramic coatings for diesel engine components

    SciTech Connect (OSTI)

    Naylor, M.G.S. )

    1992-06-01

    The tribological properties of a variety of advanced coating materials have been evaluated under conditions which simulate the piston ring -- cylinder liner environment near top ring reversal in a heavy duty diesel engine. Coated ring'' samples were tested against a conventional pearlitic grey cast iron liner material using a high temperature reciprocating wear test rig. Tests were run with a fresh CE/SF 15W40lubricant at 200 and 350{degrees}C, with a high-soot, engine-tested oil at 200{degrees}C and with no lubrication at 200{degrees}C. For lowest wear under boundary lubricated conditions, the most promising candidates to emerge from this study were high velocity oxy-fuel (HVOF) Cr{sub 3} C{sub 2} - 20% NiCr and WC - 12% Co cermets, low temperature arc vapor deposited (LTAVD) CrN and plasma sprayed chromium oxides. Also,plasma sprayed Cr{sub 2}O{sub 3} and A1{sub 2}O{sub 3}-ZrO{sub 2} materials were found to give excellent wear resistance in unlubricated tests and at extremely high temperatures (450{degrees}C) with a syntheticoil. All of these materials would offer substantial wear reductions compared to the conventional electroplated hard chromium ring facing and thermally sprayed metallic coatings, especially at high temperatures and with high-soot oils subjected to degradation in diesel environments. The LTAVD CrN coating provided the lowest lubricated wear rates of all the materials evaluated, but may be too thin (4 {mu}m) for use as a top ring facing. Most of the coatings evaluated showed higher wear rates with high-soot, engine-tested oil than with fresh oil, with increases of more than a factor of ten in some cases. Generally, metallic materials were found to be much more sensitive to soot/oil degradation than ceramic and cermet coatings. Thus, decreased soot sensitivity'' is a significant driving force for utilizing ceramic or cermet coatings in diesel engine wear applications.

  20. Effect of Biodiesel Blending on the Speciation of Soluble Organic Fraction from a Light Duty Diesel Engine

    SciTech Connect (OSTI)

    Strzelec, Andrea; Storey, John Morse; Lewis Sr, Samuel Arthur; Daw, C Stuart; Foster, Prof. Dave; Rutland, Prof. Christopher J.

    2010-01-01

    Soy methyl ester (SME) biodiesel was volumetrically blended with 2007 certification ultra low sulfur diesel (ULSD) fuel and run in a 1.7L direct-injection common rail diesel engine at one speed-load point (1500rpm, 2.6bar BMEP). Engine fueling rate and injection timing were adjusted to maintain a constant load, while particulate samples were collected in a diesel particulate filter (DPF) and with a dilution tunnel sampling train. The samples collected at these two locations were found to contain different levels of soluble organic fraction (SOF) and the different hydrocarbon species in the SOF. This observation indicates that traditional SOF measurements, in light of the specific sampling procedure used, may not be appropriate to DPF applications.

  1. Heavy Duty Low-Temperature & Diesel Combustion

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

    Security Lab Foundations Bioscience Computing & Info Sciences Geoscience Engineering ... diesel engines will likely require unconventional engine combustion and operating ...

  2. Development of OTM Syngas Process and Testing of Syngas Derived Ultra-clean Fuels in Diesel Engines and Fuel Cells

    SciTech Connect (OSTI)

    E.T. Robinson; James P. Meagher; Prasad Apte; Xingun Gui; Tytus R. Bulicz; Siv Aasland; Charles Besecker; Jack Chen Bart A. van Hassel; Olga Polevaya; Rafey Khan; Piyush Pilaniwalla

    2002-12-31

    This topical report summarizes work accomplished for the Program from November 1, 2001 to December 31, 2002 in the following task areas: Task 1: Materials Development; Task 2: Composite Development; Task 4: Reactor Design and Process Optimization; Task 8: Fuels and Engine Testing; 8.1 International Diesel Engine Program; 8.2 Nuvera Fuel Cell Program; and Task 10: Program Management. Major progress has been made towards developing high temperature, high performance, robust, oxygen transport elements. In addition, a novel reactor design has been proposed that co-produces hydrogen, lowers cost and improves system operability. Fuel and engine testing is progressing well, but was delayed somewhat due to the hiatus in program funding in 2002. The Nuvera fuel cell portion of the program was completed on schedule and delivered promising results regarding low emission fuels for transportation fuel cells. The evaluation of ultra-clean diesel fuels continues in single cylinder (SCTE) and multiple cylinder (MCTE) test rigs at International Truck and Engine. FT diesel and a BP oxygenate showed significant emissions reductions in comparison to baseline petroleum diesel fuels. Overall through the end of 2002 the program remains under budget, but behind schedule in some areas.

  3. Characterization of coal-water slurry fuel sprays from diesel engine injectors

    SciTech Connect (OSTI)

    Caton, J.A.; Kihm, K.D.

    1993-06-01

    Experiments were conducted to characterize coal-water slurry fuel sprays from diesel engine injectors. Since the combustion event is a strong function of the fuel spray, full characterization of the spray is a necessity for successful engine design and for modeling of the combustion process. Two experimental facilities were used at TAMU to study the injection of coal slurry fuels. The first experimental facility incorporates General Electric locomotive engine components (injection pump, fuel line, and nozzle) and a specially designed diaphragm to separate the abrasive coal slurry fuel from the moving parts of the pump. The second experimental facility is based on an accumulator injector from General Electric. Instrumentation includes instantaneous needle lift and fuel line pressure. A pressurized visualization chamber was used to provide a spray environment which simulated the engine gas density and permitted the use of spray diagnostic techniques. The study was divided into two phases: (1) overall characterization of the spray, and (2) detailed droplet size and size distribution characterization. In addition to this overall characterization of the spray, the second phase of this study characterized the details of the atomization quality.

  4. Cummins Light Truck Clean Diesel | Department of Energy

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

    Light Truck Clean Diesel Cummins Light Truck Clean Diesel 2004 Diesel Engine Emissions Reduction (DEER) Conference Presentation 2004_deer_stang2.pdf (257.78 KB) More Documents & Publications Cummins/DOE Light Truck Clean Diesel Engine Progress Report Cummins Work Toward Successful Introduction of Light-Duty Clean Diesel Engines in US Cummins/DOE Light Truck Diesel Engine Progress Report

  5. A computational investigation of diesel and biodiesel combustion and NOx formation in a light-duty compression ignition engine

    SciTech Connect (OSTI)

    Wang, Zihan; Srinivasan, Kalyan K.; Krishnan, Sundar R.; Som, Sibendu

    2012-04-24

    Diesel and biodiesel combustion in a multi-cylinder light duty diesel engine were simulated during a closed cycle (from IVC to EVO), using a commercial computational fluid dynamics (CFD) code, CONVERGE, coupled with detailed chemical kinetics. The computational domain was constructed based on engine geometry and compression ratio measurements. A skeletal n-heptane-based diesel mechanism developed by researchers at Chalmers University of Technology and a reduced biodiesel mechanism derived and validated by Luo and co-workers were applied to model the combustion chemistry. The biodiesel mechanism contains 89 species and 364 reactions and uses methyl decanoate, methyl-9- decenoate, and n-heptane as the surrogate fuel mixture. The Kelvin-Helmholtz and Rayleigh-Taylor (KH-RT) spray breakup model for diesel and biodiesel was calibrated to account for the differences in physical properties of the fuels which result in variations in atomization and spray development characteristics. The simulations were able to capture the experimentally observed pressure and apparent heat release rate trends for both the fuels over a range of engine loads (BMEPs from 2.5 to 10 bar) and fuel injection timings (from 0° BTDC to 10° BTDC), thus validating the overall modeling approach as well as the chemical kinetic models of diesel and biodiesel surrogates. Moreover, quantitative NOx predictions for diesel combustion and qualitative NOx predictions for biodiesel combustion were obtained with the CFD simulations and the in-cylinder temperature trends were correlated to the NOx trends."

  6. Addressing the Manufacturing Issues Associated with the use of Ceramic Materials for Diesel Engine Components.

    SciTech Connect (OSTI)

    McSpadden, SB

    2001-09-12

    This CRADA supports the objective of selecting appropriate ceramic materials for manufacturing several diesel engine components and addressing critical manufacturing issues associated with these components. Materials that were evaluated included several varieties of silicon nitride and stabilized zirconia. The critical manufacturing issues that were addressed included evaluation of the effect of grain size and the effect of the grinding process on mechanical properties, mechanical performance, reliability, and expected service life. The CRADA comprised four tasks: (1) Machining of Zirconia and Silicon Nitride Materials; (2) Mechanical Properties Characterization and Performance Testing; (3) Tribological Studies; and (4) Residual Stress Studies. Using instrumented equipment at the High Temperature Materials Laboratory (HTML) Machining and Inspection Research User Center (MIRUC), zirconia and silicon nitride materials were ground into simulated component geometries. These components were subsequently evaluated for mechanical properties, wear, and residual stress characteristics in tasks two, three, and four.

  7. Coal-fueled high-speed diesel engine development. Final report, September 28, 1990--November 30, 1993

    SciTech Connect (OSTI)

    Kakwani, R.M.; Winsor, R.E.; Ryan, T.W. III; Schwalb, J.A.; Wahiduzzaman, S.; Wilson, R.P. Jr.

    1993-09-01

    The goal of this program was to study the feasibility of operating a Detroit Diesel Series 149 engine at high speeds using a Coal-Water-Slurry (CWS) fuel. The CWS-fueled 149 engine is proposed for the mine-haul off-highway truck and work boat marine markets. Economic analysis studies indicate that, for these markets, the use of CWS fuel could have sufficient operating cost savings, depending upon the future diesel fuel price, emission control system capital and operating costs, and maintenance and overhaul costs. A major portion of the maintenance costs is expected to be due to lower life and higher cost of the CWS injectors. Injection and combustion systems were specially designed for CWS, and were installed in one cylinder of a Detroit Diesel 8V-149TI engine for testing. The objective was to achieve engine operation for sustained periods at speeds up to 1,900 rpm with reasonable fuel economy and coal burnout rate. A computer simulation predicted autoignition of coal fuel at 1,900 rpm would require an average droplet size of 18 microns and 19:1 compression ratio, so the injection system, and pistons were designed accordingly. The injection system was capable of supplying the required volume of CWS/injection with a duration of approximately 25 crank angle degrees and peak pressures on the order of 100 mpa. In addition to the high compression ratio, the combustion system also utilized hot residual gases in the cylinder, warm inlet air admission and ceramic insulated engine components to enhance combustion. Autoignition of CWS fuel was achieved at 1900 rpm, at loads ranging from 20--80 percent of the rated load of diesel-fuel powered cylinders. Limited emissions data indicates coal burnout rates in excess of 99 percent. NO{sub x} levels were significantly lower, while unburned hydrocarbon levels were higher for the CWS fueled cylinder than for corresponding diesel-fuel powered cylinders.

  8. A study of the organic emission from a turbocharged diesel engine running on 12 percent hexyl nitrate dissolved in ethanol

    SciTech Connect (OSTI)

    Walde, N.; Westerholm, R.; Persson, K.-A.

    1984-01-01

    A highly rated turbocharged diesel engine adapted for an alternative fuel based on ethanol and hexyl nitrate has been investigated with respect to the emission of organic compounds in the exhausts. The adaption involves: ignition nozzles with larger holes, a change of injection timing and more fuel injected per stroke. Emissions were measured at four different driving modes ie, 1, 8, 10 and 12 respectively, in the California Cycle. The exhaust composition are different compared to conventional diesel emissions. The main part of the organic pollutants consists of unburned ethanol and hexyl nitrate, acetaldehyde being the most abundant aldehyde.

  9. Regulated and Unregulated Exhaust Emissions Comparison for Three Tier II Non-Road Diesel Engines Operating on Ethanol-Diesel Blends

    SciTech Connect (OSTI)

    Merritt, P. M.; Ulmet, V.; McCormick, R. L.; Mitchell, W. E.; Baumgard, K. J.

    2005-11-01

    Regulated and unregulated emissions (individual hydrocarbons, ethanol, aldehydes and ketones, polynuclear aromatic hydrocarbons (PAH), nitro-PAH, and soluble organic fraction of particulate matter) were characterized in engines utilizing duplicate ISO 8178-C1 eight-mode tests and FTP smoke tests. Certification No. 2 diesel (400 ppm sulfur) and three ethanol/diesel blends, containing 7.7 percent, 10 percent, and 15 percent ethanol, respectively, were used. The three, Tier II, off-road engines were 6.8-L, 8.1-L, and 12.5-L in displacement and each had differing fuel injection system designs. It was found that smoke and particulate matter emissions decreased with increasing ethanol content. Changes to the emissions of carbon monoxide and oxides of nitrogen varied with engine design, with some increases and some decreases. As expected, increasing ethanol concentration led to higher emissions of acetaldehyde (increases ranging from 27 to 139 percent). Benzene emissions were reduced by up to 50 percent with the ethanol-blended fuels. Emissions of 1,3-butadiene were also substantially decreased, with reductions ranging from 24 to 82 percent. Isolated trends were noted for certain PAHs. There was a decrease in 1-nitropyrene with use of ethanol in all cases. Particulate phase 1-nitropyrene was reduced from 18 to 62 percent. There was also a general increase in the proportion of heavy PAHs in the particulate phase with ethanol use, and although less pronounced, a general decrease in light PAHs in the particulate phase.

  10. Dumping Dirty Diesels: The View From the Bridge | Department...

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

    Dumping Dirty Diesels: The View From the Bridge Dumping Dirty Diesels: The View From the Bridge 2005 Diesel Engine Emissions Reduction (DEER) Conference Presentations and Posters ...

  11. Retrofit Diesel Emissions Control System Providing 50% NOxControl...

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

    Diesel Emissions Control System Providing 50% NOxControl Retrofit Diesel Emissions Control System Providing 50% NOxControl 2005 Diesel Engine Emissions Reduction (DEER) Conference ...

  12. Requirements-Driven Diesel Catalyzed Particulate Trap Design...

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

    Requirements-Driven Diesel Catalyzed Particulate Trap Design and Optimization Requirements-Driven Diesel Catalyzed Particulate Trap Design and Optimization 2005 Diesel Engine ...

  13. Off-Highway Heavy Vehicle Diesel Efficiency Improvement and Emissions...

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

    Off-Highway Heavy Vehicle Diesel Efficiency Improvement and Emissions Reduction Off-Highway Heavy Vehicle Diesel Efficiency Improvement and Emissions Reduction 2005 Diesel Engine ...

  14. Lubricant Formulation and Consumption Effects on Diesel Exhaust...

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

    Lubricant Formulation and Consumption Effects on Diesel Exhaust Ash Emissions: Lubricant Formulation and Consumption Effects on Diesel Exhaust Ash Emissions: 2005 Diesel Engine ...

  15. The Chemistry of the Thermal DeNOx Process: A Review of the Technology's Possible Application to control of NOx from Diesel Engines

    SciTech Connect (OSTI)

    Lyon, Richard

    2001-08-05

    This paper presents a review of the Thermal DeNOx process with respect to its application to control of NOx emissions from diesel engines. The chemistry of the process is discussed first in empirical and then theoretical terms. Based on this discussion the possibilities of applying the process to controlling NOx emissions from diesel engines is considered. Two options are examined, modifying the requirements of the chemistry of the Thermal DeNOx process to suit the conditions provided by diesel engines and modifying the engines to provide the conditions required by the process chemistry. While the former examination did not reveal any promising opportunities, the latter did. Turbocharged diesel engine systems in which the turbocharger is a net producer of power seem capable of providing the conditions necessary for NOx reduction via the Thermal DeNOx reaction.

  16. Evaluation of NTE Windows and a Work-Based Method to Determine In-Use Emissions of a Heavy-Duty Diesel Engine

    Broader source: Energy.gov [DOE]

    Poster presentation at the 2007 Diesel Engine-Efficiency & Emissions Research Conference (DEER 2007). 13-16 August, 2007, Detroit, Michigan. Sponsored by the U.S. Department of Energy's (DOE) Office of FreedomCAR and Vehicle Technologies (OFCVT).

  17. Light-Duty Drive Cycle Simulations of Diesel Engine-Out Exhaust Properties for an RCCI-Enabled Vehicle

    SciTech Connect (OSTI)

    Gao, Zhiming; Curran, Scott; Daw, C Stuart; Wagner, Robert M

    2013-01-01

    In-cylinder blending of gasoline and diesel fuels to achieve low-temperature reactivity controlled compression ignition (RCCI) can reduce NOx and PM emissions while maintaining or improving brake thermal efficiency compared to conventional diesel combustion (CDC). Moreover, the dual-fueling RCCI is able to achieve these benefits by tailoring combustion reactivity over a wider range of engine operation than is possible with a single fuel. However, the currently demonstrated range of stable RCCI combustion just covers a portion of the engine speed-load range required in several light-duty drive cycles. This means that engines must switch from RCCI to CDC when speed and load fall outside of the stable RCCI range. In this study we investigated the impact of RCCI as it has recently been demonstrated on practical engine-out exhaust temperature and emissions by simulating a multi-mode RCCI-enabled vehicle operating over two urban and two highway driving cycles. To implement our simulations, we employed experimental engine maps for a multi-mode RCCI/CDC engine combined with a standard mid-size, automatic transmission, passenger vehicle in the Autonomie vehicle simulation platform. Our results include both detailed transient and cycle-averaged engine exhaust temperature and emissions for each case, and we note the potential implications of the modified exhaust properties on catalytic emissions control and utilization of waste heat recovery on future RCCI-enabled vehicles.

  18. Insights on postinjection-associated soot emissions in direct injection diesel engines

    SciTech Connect (OSTI)

    Arregle, Jean; Pastor, Jose V.; Lopez, J. Javier; Garcia, Antonio

    2008-08-15

    A comprehensive study was carried out in order to better understand combustion behavior in a direct injection diesel engine when using postinjections. More specifically, the aim of the study is twofold: (1) to better understand the mechanism of a postinjection to reduce soot and (2) to improve the understanding of the contribution of the postinjection combustion on the total soot emissions by looking at the effect of the postinjection timing variation and the postinjection mass variation on the soot emissions associated with the postinjection. The study is focused only on far postinjections, and the explored operating conditions include the use of EGR. The first objective was fulfilled analyzing some results from a previous work adding only a few complementary results. Concerning the second objective, the basic idea behind the analysis performed is the search of appropriate parameters physically linked to the processes under analysis. These parameters are found based on the state-of-the-art of diesel combustion. For the effect of the postinjection timing, the physical parameter found was the temperature of the unburned gases at the end of injection, T{sub ug{sub E}}{sub oI}. It was checked that a threshold level of T{sub ug{sub E}}{sub oI} ({proportional_to}700 K for the cases explored here) exists below which soot is unable to be formed, independently of the postinjection size, and the amount of soot increases as the temperature increases beyond this threshold. For the effect of the postinjection size, the physical parameter that was found was DoI/ACT (the ratio between the actual duration of injection and the time necessary for mixing - the apparent combustion time). This parameter can quantify when the postinjection is able to produce soot (the threshold value is {proportional_to}0.37 for the cases explored here), and the amount of soot produced increases as this parameter increases beyond this threshold value. A function containing these two parameters has been

  19. Effect of pilot injection on combustion in a turbocharged D.I. diesel engine

    SciTech Connect (OSTI)

    Ishida, Masahiro; Chen, Z.L.; Luo, G.F.; Ueki, Hironobu

    1994-09-01

    For reducing the exhaust emissions and improving the ignition characteristics, the effect of pilot injection was investigated experimentally in a turbocharged direct injection diesel engine. The pilot injection quantity was varied by changing the seat diameter of the Doge plunger installed in the newly developed pilot injector while the separation period between the beginning of pilot injection and that of main injection was fixed at a short interval in the present experiment. The pilot injection effect on combustion was compared with the case of normal injection in two fuel oils with the cetane indexes of 53 and 40-respectively. The pilot injection showed some significant effects on improving the ignition characteristics and fuel consumption as follows: (1) The pilot ignition delay and the main ignition delay were about half of the ignition delay of the normal injection respectively. (2) The lower fuel consumption and NOx could be attained by the pilot injection at the retarded injection timing, especially under the lower load condition. (3) The trade-off relationship between the specific fuel consumption and NOx was significantly improved by the pilot injection. (4) In the present short pilot-main interval, a small amount of pilot quantity was recommended to reduce NOx and fuel consumption without deteriorating smoke density. 12 refs., 16 figs., 1 tab.

  20. Fast-regenerable sulfur dioxide absorbents for lean-burn diesel engine emission control

    SciTech Connect (OSTI)

    Li, Liyu; King, David L.

    2010-01-23

    It is known that sulfur oxides contribute significantly and deleteriously to the overall performance of lean-burn diesel engine aftertreatment systems, especially in the case of NOx traps. A Ag-based, fast regenerable SO2 absorbent has been developed and will be described. Over a temperature range of 300oC to 550oC, it absorbs almost all of the SO2 in the simulated exhaust gases during the lean cycles and can be fully regenerated by the short rich cycles at the same temperature. Its composition has been optimized as 1 wt% Pt-5wt%Ag-SiO2, and the preferred silica source for the supporting material has been identified as inert Cabosil fumed silica. The thermal instability of Ag2O under fuel-lean conditions at 230oC and above makes it possible to fast regenerate the sulfur-loaded absorbent during the following fuel-rich cycles. Pt catalyst helps reducing Ag2SO4 during rich cycles at low temperatures. And the chemically inert fumed SiO2 support gives the absorbent long term stability. This absorbent shows great potential to work under the same lean-rich cycling conditions as those imposed on the NOx traps, and thus, can protect the downstream particulate filter and the NOx trap from sulfur poisoning.

  1. Modeling Species Inhibition of NO Oxidation in Urea-SCR Catalysts for Diesel Engine NOx Control

    SciTech Connect (OSTI)

    Devarakonda, Maruthi N.; Tonkyn, Russell G.; Tran, Diana N.; Lee, Jong H.; Herling, Darrell R.

    2011-04-20

    Urea-selective catalytic reduction (SCR) catalysts are regarded as the leading NOx aftertreatment technology to meet the 2010 NOx emission standards for on-highway vehicles running on heavy-duty diesel engines. However, issues such as low NOx conversion at low temperature conditions still exist due to various factors, including incomplete urea thermolysis, inhibition of SCR reactions by hydrocarbons and H2O. We have observed a noticeable reduction in the standard SCR reaction efficiency at low temperature with increasing water content. We observed a similar effect when hydrocarbons are present in the stream. This effect is absent under fast SCR conditions where NO ~ NO2 in the feed gas. As a first step in understanding the effects of such inhibition on SCR reaction steps, kinetic models that predict the inhibition behavior of H2O and hydrocarbons on NO oxidation are presented in the paper. A one-dimensional SCR model was developed based on conservation of species equations and was coded as a C-language S-function and implemented in Matlab/Simulink environment. NO oxidation and NO2 dissociation kinetics were defined as a function of the respective adsorbate’s storage in the Fe-zeolite SCR catalyst. The corresponding kinetic models were then validated on temperature ramp tests that showed good match with the test data. Such inhibition models will improve the accuracy of model based control design for integrated DPF-SCR aftertreatment systems.

  2. Modeling Species Inhibition of NO oxidation in Urea-SCR Catalysts for Diesel Engine NOx Control

    SciTech Connect (OSTI)

    Devarakonda, Maruthi N.; Tonkyn, Russell G.; Tran, Diana N.; Lee, Jong H.; Herling, Darrell R.

    2010-09-15

    Urea-selective catalytic reduction (SCR) catalysts are regarded as the leading NOx aftertreatment technology to meet the 2010 NOx emission standards for on-highway vehicles running on heavy-duty diesel engines. However, issues such as low NOx conversion at low temperature conditions still exist due to various factors, including incomplete urea thermolysis, inhibition of SCR reactions by hydrocarbons and H2O. We have observed a noticeable reduction in the standard SCR reaction efficiency at low temperature with increasing water content. We observed a similar effect when hydrocarbons are present in the stream. This effect is absent under fast SCR conditions where NO ~ NO2 in the feed gas. As a first step in understanding the effects of such inhibition on SCR reaction steps, kinetic models that predict the inhibition behavior of H2O and hydrocarbons on NO oxidation are presented in the paper. A one-dimensional SCR model was developed based on conservation of species equations and was coded as a C-language S-function and implemented in Matlab/Simulink environment. NO oxidation and NO2 dissociation kinetics were defined as a function of the respective adsorbate’s storage in the SCR catalyst. The corresponding kinetic models were then validated on temperature ramp tests that showed good match with the test data.

  3. Diesel Particulate Filters: Market Introducution in Europe |...

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

    More Documents & Publications A New Active DPF System for "Stop and Go" Duty-Cycle Vehicles French perspective on diesel engines & emissions Diesel Particulate Filter: A Success ...

  4. Diesel Desulfurization Filter | Department of Energy

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

    Desulfurization Filter Diesel Desulfurization Filter 2005 Diesel Engine Emissions Reduction (DEER) Conference Presentations and Posters PDF icon 2005deerrohrbach.pdf More ...

  5. EPA Diesel Update | Department of Energy

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

    EPA Diesel Update 2005 Diesel Engine Emissions Reduction (DEER) Conference Presentations and Posters PDF icon 2005deercharmley.pdf More Documents & Publications EPA Mobile Source ...

  6. Efficiency Considerations of Diesel Premixed Charge Compression...

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

    Biodiesel's Enabling Characteristics in Attaining Low Temperature Diesel Combustion System-Response Issues Imposed by Biodiesel in a Medium-Duty Diesel Engine Fuel-Induced System ...

  7. Thick Thermal Barrier Coatings (TTBCs) for Low Emission, High Efficiency Diesel Engine Components

    SciTech Connect (OSTI)

    M. Brad Beardsley, Caterpillar Inc.; Dr. Darrell Socie, University of Illinois; Dr. Ed Redja, University of Illinois; Dr. Christopher Berndt, State University of New York at Stony Brook

    2006-03-02

    The objective of this program was to advance the fundamental understanding of thick thermal barrier coating (TTBC) systems for application to low heat rejection diesel engine combustion chambers. Previous reviews of thermal barrier coating technology concluded that the current level of understanding of coating system behavior is inadequate and the lack of fundamental understanding may impede the application of thermal barrier coating to diesel engines.(1) Areas of TTBC technology examined in this program include powder characteristics and chemistry; bond coating composition, coating design, microstructure and thickness as they affect properties, durability, and reliability; and TTBC "aging" effects (microstructural and property changes) under diesel engine operating conditions. Fifteen TTBC ceramic powders were evaluated. These powders were selected to investigate the effects of different chemistries, different manufacturing methods, lot-to-lot variations, different suppliers and varying impurity levels. Each of the fifteen materials has been sprayed using 36 parameters selected by a design of experiments (DOE) to determine the effects of primary gas (Ar and N2), primary gas flow rate, voltage, arc current, powder feed rate, carrier gas flow rate, and spraying distance. The deposition efficiency, density, and thermal conductivity of the resulting coatings were measured. A coating with a high deposition efficiency and low thermal conductivity is desired from an economic standpoint. An optimum combination of thermal conductivity and disposition efficiency was found for each lot of powder in follow-on experiments and disposition parameters were chosen for full characterization.(2) Strengths of the optimized coatings were determined using 4-point bending specimens. The tensile strength was determined using free-standing coatings made by spraying onto mild steel substrates which were subsequently removed by chemical etching. The compressive strengths of the coatings

  8. A Chemical Kinetic Modeling Study of the Effects of Oxygenated Hydrocarbons on Soot Emissions from Diesel Engines

    SciTech Connect (OSTI)

    Westbrook, C K; Pitz, W J; Curran, H J

    2005-11-14

    A detailed chemical kinetic modeling approach is used to examine the phenomenon of suppression of sooting in diesel engines by addition of oxygenated hydrocarbon species to the fuel. This suppression, which has been observed experimentally for a few years, is explained kinetically as a reduction in concentrations of soot precursors present in the hot products of a fuel-rich diesel ignition zone when oxygenates are included. Oxygenates decrease the overall equivalence ratio of the igniting mixture, producing higher ignition temperatures and more radical species to consume more soot precursor species, leading to lower soot production. The kinetic model is also used to show how different oxygenates, ester structures in particular, can have different soot-suppression efficiencies due to differences in molecular structure of the oxygenated species.

  9. Onboard Plasmatron Generation of Hydrogen rich Gas for Diesel Engine Exhaust Aftertreatment and Other Applications

    SciTech Connect (OSTI)

    Bromberg, L.; Cohn, D.R.; Heywood,J.; Rabinovich, A.

    2002-08-25

    Plasmatron reformers can provide attractive means for conversion of diesel fuel into hydrogen rich gas. The hydrogen rich gas can be used for improved NOx trap technology and other aftertreatment applications.

  10. 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 ...

  11. Fuel Efficiency and Emissions Optimization of Heavy-Duty Diesel...

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

    and Emissions Optimization of Heavy-Duty Diesel Engines using Model-Based Transient Calibration Fuel Efficiency and Emissions Optimization of Heavy-Duty Diesel Engines using ...

  12. An Innovative Pressure Sensor Glow Plug Offers Improved Diesel...

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

    An Innovative Pressure Sensor Glow Plug Offers Improved Diesel Engine Closed-loop Control An Innovative Pressure Sensor Glow Plug Offers Improved Diesel Engine Closed-loop Control ...

  13. An experimental and modeling study investigating the ignition delay in a military diesel engine running hexadecane (cetane) fuel

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Cowart, Jim S.; Fischer, Warren P.; Hamilton, Leonard J.; Caton, Patrick A.; Sarathy, S. Mani; Pitz, William J.

    2013-02-01

    In an effort aimed at predicting the combustion behavior of a new fuel in a conventional diesel engine, cetane (n-hexadecane) fuel was used in a military engine across the entire speed–load operating range. The ignition delay was characterized for this fuel at each operating condition. A chemical ignition delay was also predicted across the speed–load range using a detailed chemical kinetic mechanism with a constant pressure reactor model. At each operating condition, the measured in-cylinder pressure and predicted temperature at the start of injection were applied to the detailed n-hexadecane kinetic mechanism, and the chemical ignition delay was predicted withoutmore » any kinetic mechanism calibration. The modeling results show that fuel–air parcels developed from the diesel spray with an equivalence ratio of 4 are the first to ignite. The chemical ignition delay results also showed decreasing igntion delays with increasing engine load and speed, just as the experimental data revealed. At lower engine speeds and loads, the kinetic modeling results show the characteristic two-stage negative temperature coefficient behavior of hydrocarbon fuels. However, at high engine speeds and loads, the reactions do not display negative temperature coefficient behavior, as the reactions proceed directly into high-temperature pathways due to higher temperatures and pressure at injection. A moderate difference between the total and chemical ignition delays was then characterized as a phyical delay period that scales inversely with engine speed. This physical delay time is representative of the diesel spray development time and is seen to become a minority fraction of the total igntion delay at higher engine speeds. In addition, the approach used in this study suggests that the ignition delay and thus start of combustion may be predicted with reasonable accuracy using kinetic modeling to determine the chemical igntion delay. Then, in conjunction with the physical delay

  14. An experimental and modeling study investigating the ignition delay in a military diesel engine running hexadecane (cetane) fuel

    SciTech Connect (OSTI)

    Cowart, Jim S.; Fischer, Warren P.; Hamilton, Leonard J.; Caton, Patrick A.; Sarathy, S. Mani; Pitz, William J.

    2013-02-01

    In an effort aimed at predicting the combustion behavior of a new fuel in a conventional diesel engine, cetane (n-hexadecane) fuel was used in a military engine across the entire speed–load operating range. The ignition delay was characterized for this fuel at each operating condition. A chemical ignition delay was also predicted across the speed–load range using a detailed chemical kinetic mechanism with a constant pressure reactor model. At each operating condition, the measured in-cylinder pressure and predicted temperature at the start of injection were applied to the detailed n-hexadecane kinetic mechanism, and the chemical ignition delay was predicted without any kinetic mechanism calibration. The modeling results show that fuel–air parcels developed from the diesel spray with an equivalence ratio of 4 are the first to ignite. The chemical ignition delay results also showed decreasing igntion delays with increasing engine load and speed, just as the experimental data revealed. At lower engine speeds and loads, the kinetic modeling results show the characteristic two-stage negative temperature coefficient behavior of hydrocarbon fuels. However, at high engine speeds and loads, the reactions do not display negative temperature coefficient behavior, as the reactions proceed directly into high-temperature pathways due to higher temperatures and pressure at injection. A moderate difference between the total and chemical ignition delays was then characterized as a phyical delay period that scales inversely with engine speed. This physical delay time is representative of the diesel spray development time and is seen to become a minority fraction of the total igntion delay at higher engine speeds. In addition, the approach used in this study suggests that the ignition delay and thus start of combustion may be predicted with reasonable accuracy using kinetic modeling to determine the chemical igntion delay. Then, in conjunction with the physical delay time

  15. DIesel Emission Control Technology Developments | Department of Energy

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

    DIesel Emission Control Technology Developments DIesel Emission Control Technology Developments 2005_deer_andreoni.pdf (249.21 KB) More Documents & Publications Cleaning Up Diesel Engines Diesel Engines: Environmental Impact and Control ADEC II Universal SCR Retrofit System for On-road and Off-road Diesel Engines

  16. Fuel Effects on Combustion and Emissions of a Direct-Inection Diesel Engine Operating at Moderate to High Engine Speed and Load

    SciTech Connect (OSTI)

    Szybist, James P; Szymkowicz, Patrick G.; Northrop, William F

    2012-01-01

    It is advantageous to increase the specific power output of diesel engines and to operate them at higher load for a greater portion of a driving cycle to achieve better thermal efficiency and thus reduce vehicle fuel consumption. Such operation is limited by excessive smoke formation at retarded injection timing and high rates of cylinder pressure rise at more advanced timing. Given this window of operation, it is desired to understand the influence of fuel properties such that optimum combustion performance and emissions can be retained over the range of fuels commonly available in the marketplace. It has been shown in previous studies that varying cetane number (CN) of diesel fuel has little effect on ignition delay at high engine load due to the domination of high cylinder temperature on ignition kinetics. The work here experimentally confirms that finding but also shows that emissions and combustion performance vary according to fuel reactivity. Data are examined from a direct-injection single cylinder research engine for eight common diesel fuels including soy-based biodiesel blends at two high load operating points with no exhaust gas recirculation (EGR) and at a moderate load with four levels of EGR. It is shown in the work that at high engine load where combustion is controlled by mixing processes, CN and other fuel properties have little effect on engine performance, although lower CN fuels produce a small increase in noise, smoke and CO emissions. Biodiesel blends increase NOX emissions and decreases CO and smoke emissions at high load, but otherwise have little effect on performance. At moderate load, higher CN fuels are more tolerant to EGR due to their better chemical reactivity at retarded injection timing, but all fuels produce comparable thermal efficiency at advanced combustion phasing regardless of EGR. In contrast to the high load conditions, there was no increase in NOX emissions for biodiesel at the moderate load condition. It is concluded that

  17. Development of Technologies for a High Efficiency, Very Low Emission, Diesel Engine for Light Trucks and Sport Utility Vehicles

    SciTech Connect (OSTI)

    Stang, John H.

    1997-12-01

    Cummins Inc., in partnership with the Department of Energy, has developed technology for a new highly efficient, very low emission, diesel engine for light trucks and sport utility vehicles. This work began in April 1997, and started with very aggressive goals for vehicles in the 5751 to 8500 pound GCW weight class. The primary program goals were as follows: (1) EMISSIONS NOx = 0.50 g/mi PM = 0.05 g/mi CO = 2.8 g/mi NMHC = 0.07 g/mi California decided to issue new and even tougher LEV II light truck regulations late in 1999. EPA also issued its lower Tier 2 regulations late in 2000. The net result was that the targets for this diesel engine project were lowered, and these goals were eventually modified by the publication of Federal Tier 2 emission standards early in 2000 to the following: NOx = 0.07 g/mi PM = 0.01 g/mi (2) FUEL ECONOMY The fuel economy goal was 50 percent MPG improvement (combined city/highway) over the 1997 gasoline powered light truck or sport utility vehicle in the vehicle class for which this diesel engine is being designed to replace. The goal for fuel economy remained at 50 percent MPG improvement, even with the emissions goal revisions. (3) COOPERATIVE DEVELOPMENT Regular design reviews of the engine program will be conducted with a vehicle manufacturer to insure that the concepts and design specifics are commercially feasible. (DaimlerChrysler has provided Cummins with this design review input.) Cummins has essentially completed a demonstration of proof-of-principle for a diesel engine platform using advanced combustion and fuel system technologies. Cummins reported very early progress in this project, evidence that new diesel engine technology had been developed that demonstrated the feasibility of the above emissions goals. Emissions levels of NOx = 0.4 g/mi and PM = 0.06 g/mi were demonstrated for a 5250 lb. test weight vehicle with passive aftertreatment only. These results were achieved using the full chassis dynamometer FTP-75 test

  18. Development of Technologies for a High Efficiency, Very Low Emission, Diesel Engine for Light Trucks and Sport Utility Vehicles

    SciTech Connect (OSTI)

    Stang, John H.

    2005-12-19

    Cummins Inc., in partnership with the Department of Energy, has developed technology for a new highly efficient, very low emission, diesel engine for light trucks and sport utility vehicles. This work began in April 1997, and started with very aggressive goals for vehicles in the 5751 to 8500 pound GCW weight class. The primary program goals were as follows: (1) EMISSIONS -- NOx = 0.50 g/mi; PM = 0.05 g/mi; CO = 2.8 g/mi; and NMHC = 0.07 g/mi. California decided to issue new and even tougher LEV II light truck regulations late in 1999. EPA also issued its lower Tier 2 regulations late in 2000. The net result was that the targets for this diesel engine project were lowered, and these goals were eventually modified by the publication of Federal Tier 2 emission standards early in 2000 to the following: NOx = 0.07 g/mi; and PM = 0.01 g/mi. (2) FUEL ECONOMY -- The fuel economy goal was 50 percent MPG improvement (combined city/highway) over the 1997 gasoline powered light truck or sport utility vehicle in the vehicle class for which this diesel engine is being designed to replace. The goal for fuel economy remained at 50 percent MPG improvement, even with the emissions goal revisions. (3) COOPERATIVE DEVELOPMENT -- Regular design reviews of the engine program will be conducted with a vehicle manufacturer to insure that the concepts and design specifics are commercially feasible. (DaimlerChrysler has provided Cummins with this design review input.) Cummins has essentially completed a demonstration of proof-of-principle for a diesel engine platform using advanced combustion and fuel system technologies. Cummins reported very early progress in this project, evidence that new diesel engine technology had been developed that demonstrated the feasibility of the above emissions goals. Emissions levels of NOx = 0.4 g/mi and PM = 0.06 g/mi were demonstrated for a 5250 lb. test weight vehicle with passive aftertreatment only. These results were achieved using the full chassis

  19. Development of Technologies for a High Efficiency, Very Low Emission, Diesel Engine for Light Trucks and Sport Utility Vehicles

    SciTech Connect (OSTI)

    John H. Stang

    2005-12-31

    Cummins Inc., in partnership with the Department of Energy, has developed technology for a new highly efficient, very low emission, diesel engine for light trucks and sport utility vehicles. This work began in April 1997, and started with very aggressive goals for vehicles in the 5751 to 8500 pound GCW weight class. The primary program goals were as follows: (1) EMISSIONS--NO{sub x} = 0.50 g/mi; PM = 0.05 g/mi; CO = 2.8 g/mi; and NMHC = 0.07 g/mi. California decided to issue new and even tougher LEV II light truck regulations late in 1999. EPA also issued its lower Tier 2 regulations late in 2000. The net result was that the targets for this diesel engine project were lowered, and these goals were eventually modified by the publication of Federal Tier 2 emission standards early in 2000 to the following: NO{sub x} = 0.07 g/mi; and PM = 0.01 g/mi. (2) FUEL ECONOMY--The fuel economy goal was 50 percent MPG improvement (combined city/highway) over the 1997 gasoline powered light truck or sport utility vehicle in the vehicle class for which this diesel engine is being designed to replace. The goal for fuel economy remained at 50 percent MPG improvement, even with the emissions goal revisions. (3) COOPERATIVE DEVELOPMENT--Regular design reviews of the engine program will be conducted with a vehicle manufacturer to insure that the concepts and design specifics are commercially feasible. (DaimlerChrysler has provided Cummins with this design review input.) Cummins has essentially completed a demonstration of proof-of-principle for a diesel engine platform using advanced combustion and fuel system technologies. Cummins reported very early progress in this project, evidence that new diesel engine technology had been developed that demonstrated the feasibility of the above emissions goals. Emissions levels of NOx = 0.4 g/mi and PM = 0.06 g/mi were demonstrated for a 5250 lb. test weight vehicle with passive aftertreatment only. These results were achieved using the full

  20. Comparing the Performance of SunDiesel and Conventional Diesel in a

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

    Light-Duty Vehicle and Engines | Department of Energy the Performance of SunDiesel and Conventional Diesel in a Light-Duty Vehicle and Engines Comparing the Performance of SunDiesel and Conventional Diesel in a Light-Duty Vehicle and Engines 2005 Diesel Engine Emissions Reduction (DEER) Conference Presentations and Posters 2005_deer_ng.pdf (358.36 KB) More Documents & Publications Development of Advanced Combustion Technologies for Increased Thermal Efficiency Development of Enabling

  1. Catalytic combustion in internal combustion engines: A possible explanation for the Woschni effect in thermally-insulated diesel engines. Interim report

    SciTech Connect (OSTI)

    Jones, R.L.

    1996-11-15

    This report describes research undertaken to determine if catalytic combustion effects occur with the use of zirconia (ZrO{sub 2}) thermal barrier coatings (TBCs), or other coatings, in diesel engines, and if so, whether these effects have significant impact upon engine combustion, fuel economy, or pollutant emissions. A simple furnace system was used to identify catalytic combustion effects in the ignition and combustion of propane/air mixtures over catalyst-doped m-ZrO{sub 2} spheres. Three classes of catalysts were examined: zirconia-stabilizing oxides (CeO{sub 2}, Y{sub 2}O{sub 3}, MgO), transition metal oxides (Co{sub 3}O{sub 4}, Cr{sub 2}O{sub 3}, Fe{sub 2}O{sub 3}), and noble metals (Pt). Each class exhibited characteristic combustion effects, with the ignition temperature increasing, e.g., from approximately 2000 deg C for Pt to 5500 deg C for the stabilizing oxides. The results suggest that the Woschni effect, a controversial phenomenon wherein thermal-insulating measures are postulated to actually increase heat transfer from the diesel combustion chamber, may be only a manifestation of catalytic combustion. Previous research on catalytic combustion in internal combustion engines is briefly reviewed and discussed. An earlier version of this report is to be published in J. Surface and Coatings Technology as `Catalytic Combustion Effects on m-ZrO{sub 2} Doped with Various Metal Nitrates.`

  2. Low emissions diesel fuel

    DOE Patents [OSTI]

    Compere, A.L.; Griffith, W.L.; Dorsey, G.F.; West, B.H.

    1998-05-05

    A method and matter of composition for controlling NO{sub x} emissions from existing diesel engines. The method is achieved by adding a small amount of material to the diesel fuel to decrease the amount of NO{sub x} produced during combustion. Specifically, small amounts, less than about 1%, of urea or a triazine compound (methylol melamines) are added to diesel fuel. Because urea and triazine compounds are generally insoluble in diesel fuel, microemulsion technology is used to suspend or dissolve the urea or triazine compound in the diesel fuel. A typical fuel formulation includes 5% t-butyl alcohol, 4.5% water, 0.5% urea or triazine compound, 9% oleic acid, and 1% ethanolamine. The subject invention provides improved emissions in heavy diesel engines without the need for major modifications.

  3. Low emissions diesel fuel

    DOE Patents [OSTI]

    Compere, Alicia L.; Griffith, William L.; Dorsey, George F.; West, Brian H.

    1998-01-01

    A method and matter of composition for controlling NO.sub.x emissions from existing diesel engines. The method is achieved by adding a small amount of material to the diesel fuel to decrease the amount of NO.sub.x produced during combustion. Specifically, small amounts, less than about 1%, of urea or a triazine compound (methylol melamines) are added to diesel fuel. Because urea and triazine compounds are generally insoluble in diesel fuel, microemulsion technology is used to suspend or dissolve the urea or triazine compound in the diesel fuel. A typical fuel formulation includes 5% t-butyl alcohol, 4.5% water, 0.5% urea or triazine compound, 9% oleic acid, and 1% ethanolamine. The subject invention provides improved emissions in heavy diesel engines without the need for major modifications.

  4. Predicting Thermal Stress in Diesel Particulate Filters | Department of

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

    Energy Thermal Stress in Diesel Particulate Filters Predicting Thermal Stress in Diesel Particulate Filters 2004 Diesel Engine Emissions Reduction (DEER) Conference Presentation: Corning Incorporated 2004_deer_wilcox.pdf (224.39 KB) More Documents & Publications Diesel Emission Control Review Substrate Studies of an Electrically-Assisted Diesel Particulate Filter Electrically-Assisted Diesel Particulate Filter Regeneration

  5. Business Case for Light-Duty Diesels | Department of Energy

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

    Diesels Business Case for Light-Duty Diesels 2005 Diesel Engine Emissions Reduction (DEER) Conference Presentations and Posters 2005_deer_godwin.pdf (706.73 KB) More Documents & Publications Clean Diesel: The Progress, The Message, The Opportunity Light-Duty Diesel Market Potential in North America Accelerating Light-Duty Diesel Sales in the U.S. Market

  6. Active Diesel Emission Control Technology for Transport Refrigeration Units

    Broader source: Energy.gov [DOE]

    This project discusses a CARB Level 2+ verified active regeneration technology for smal diesel engines

  7. Impact of exhaust gas recirculation (EGR) on the oxidative reactivity of diesel engine soot

    SciTech Connect (OSTI)

    Al-Qurashi, Khalid; Boehman, Andre L.

    2008-12-15

    This paper expands the consideration of the factors affecting the nanostructure and oxidative reactivity of diesel soot to include the impact of exhaust gas recirculation (EGR). Past work showed that soot derived from oxygenated fuels such as biodiesel carries some surface oxygen functionality and thereby possesses higher reactivity than soot from conventional diesel fuel. In this work, results show that EGR exerts a strong influence on the physical properties of the soot which leads to enhanced oxidation rate. HRTEM images showed a dramatic difference between the burning modes of the soot generated under 0 and 20% EGR. The soot produced under 0% EGR strictly followed an external burning mode with no evidence of internal burning. In contrast, soot generated under 20% EGR exhibited dual burning modes: slow external burning and rapid internal burning. The results demonstrate clearly that highly reactive soot can be achieved by manipulating the physical properties of the soot via EGR. (author)

  8. Demonstrating Fuel Consumption and Emissions Reductions with Next Generation Model-Based Diesel Engine Control

    Broader source: Energy.gov [DOE]

    Presents a next generation model-based engine controller that incorporates real-time fuel efficiency optimization and tested under fully transient engine and vehicle operating conditions.

  9. DRIVE CYCLE EFFICIENCY AND EMISSIONS ESTIMATES FOR REACTIVITY CONTROLLED COMPRESSION IGNITION IN A MULTI-CYLINDER LIGHT-DUTY DIESEL ENGINE

    SciTech Connect (OSTI)

    Curran, Scott; Briggs, Thomas E; Cho, Kukwon; Wagner, Robert M

    2011-01-01

    In-cylinder blending of gasoline and diesel to achieve Reactivity Controlled Compression Ignition (RCCI) has been shown to reduce NOx and PM emissions while maintaining or improving brake thermal efficiency as compared to conventional diesel combustion (CDC). The RCCI concept has an advantage over many advanced combustion strategies in that by varying both the percent of premixed gasoline and EGR rate, stable combustion can be extended over more of the light-duty drive cycle load range. Changing the percent premixed gasoline changes the fuel reactivity stratification in the cylinder providing further control of combustion phasing and pressure rise rate than the use of EGR alone. This paper examines the combustion and emissions performance of light-duty diesel engine using direct injected diesel fuel and port injected gasoline to carry out RCCI for steady-state engine conditions which are consistent with a light-duty drive cycle. A GM 1.9L four-cylinder engine with the stock compression ratio of 17.5:1, common rail diesel injection system, high-pressure EGR system and variable geometry turbocharger was modified to allow for port fuel injection with gasoline. Engine-out emissions, engine performance and combustion behavior for RCCI operation is compared against both CDC and a premixed charge compression ignition (PCCI) strategy which relies on high levels of EGR dilution. The effect of percent of premixed gasoline, EGR rate, boost level, intake mixture temperature, combustion phasing and pressure rise rate is investigated for RCCI combustion for the light-duty modal points. Engine-out emissions of NOx and PM were found to be considerably lower for RCCI operation as compared to CDC and PCCI, while HC and CO emissions were higher. Brake thermal efficiency was similar or higher for many of the modal conditions for RCCI operation. The emissions results are used to estimate hot-start FTP-75 emissions levels with RCCI and are compared against CDC and PCCI modes.

  10. Diesel Particulate Filtration (DPF) Technology: Success stories...

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

    Materials Laboratory (HTML) User Program Durability of Diesel Engine Particulate Filters High Temperature Thermoelectric Materials Characterization for Automotive Waste ...

  11. Effect of E85 on RCCI Performance and Emissions on a Multi-Cylinder Light-Duty Diesel Engine - SAE World Congress

    SciTech Connect (OSTI)

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

    2012-01-01

    This paper investigates the effect of E85 on load expansion and FTP modal point emissions indices under reactivity controlled compression ignition (RCCI) operation on a light-duty multi-cylinder diesel engine. A General Motors (GM) 1.9L four-cylinder diesel engine with the stock compression ratio of 17.5:1, common rail diesel injection system, high-pressure exhaust gas recirculation (EGR) system and variable geometry turbocharger was modified to allow for port fuel injection with gasoline or E85. Controlling the fuel reactivity in-cylinder by the adjustment of the ratio of premixed low-reactivity fuel (gasoline or E85) to direct injected high reactivity fuel (diesel fuel) has been shown to extend the operating range of high-efficiency clean combustion (HECC) compared to the use of a single fuel alone as in homogeneous charge compression ignition (HCCI) or premixed charge compression ignition (PCCI). The effect of E85 on the Ad-hoc federal test procedure (FTP) modal points is explored along with the effect of load expansion through the light-duty diesel speed operating range. The Ad-hoc FTP modal points of 1500 rpm, 1.0bar brake mean effective pressure (BMEP); 1500rpm, 2.6bar BMEP; 2000rpm, 2.0bar BMEP; 2300rpm, 4.2bar BMEP; and 2600rpm, 8.8bar BMEP were explored. Previous results with 96 RON unleaded test gasoline (UTG-96) and ultra-low sulfur diesel (ULSD) showed that with stock hardware, the 2600rpm, 8.8bar BMEP modal point was not obtainable due to excessive cylinder pressure rise rate and unstable combustion both with and without the use of EGR. Brake thermal efficiency and emissions performance of RCCI operation with E85 and ULSD is explored and compared against conventional diesel combustion (CDC) and RCCI operation with UTG 96 and ULSD.

  12. Optical investigation of the combustion behaviour inside the engine operating in HCCI mode and using alternative diesel fuel

    SciTech Connect (OSTI)

    Mancaruso, E.; Vaglieco, B.M.

    2010-04-15

    In order to understand the effect of both the new homogeneous charge compression ignition (HCCI) combustion process and the use of biofuel, optical measurements were carried out into a transparent CR diesel engine. Rape seed methyl ester was used and tests with several injection pressures were performed. OH and HCO radical were detected and their evolutions were analyzed during the whole combustion. Moreover, soot concentration was measured by means the two colour pyrometry method. The reduction of particulate emission with biodiesel as compared to the diesel fuel was noted. Moreover, this effect resulted higher increasing the injection pressure. In the case of RME the oxidation of soot depends mainly from O{sub 2} content of fuel and OH is responsible of the NO formation in the chamber as it was observed for NO{sub x} exhaust emission. Moreover, it was investigated the evolution of HCO and CO into the cylinder. HCO was detected at the start of combustion. During the combustion, HCO oxidizes due to the increasing temperature and it produces CO. Both fuels have similar trend, the highest concentrations are detected for low injection pressure. This effect is more evident for the RME fuel. (author)

  13. Experimental Studies for CPF and SCR Model, Control System, and OBD Development for Engines Using Diesel and Biodiesel Fuels

    SciTech Connect (OSTI)

    Johnson, John; Naber, Jeffrey; Parker, Gordon; Yang, Song-Lin; Stevens, Andrews; Pihl, Josh

    2013-04-30

    The research carried out on this project developed experimentally validated Diesel Oxidation Catalyst (DOC), Diesel Particulate Filter (DPF), and Selective Catalytic Reduction (SCR) high‐fidelity models that served as the basis for the reduced order models used for internal state estimation. The high‐fidelity and reduced order/estimator codes were evaluated by the industrial partners with feedback to MTU that improved the codes. Ammonia, particulate matter (PM) mass retained, PM concentration, and NOX sensors were evaluated and used in conjunction with the estimator codes. The data collected from PM experiments were used to develop the PM kinetics using the high‐fidelity DPF code for both NO2 assisted oxidation and thermal oxidation for Ultra Low Sulfur Fuel (ULSF), and B10 and B20 biodiesel fuels. Nine SAE papers were presented and this technology transfer process should provide the basis for industry to improve the OBD and control of urea injection and fuel injection for active regeneration of the PM in the DPF using the computational techniques developed. This knowledge will provide industry the ability to reduce the emissions and fuel consumption from vehicles in the field. Four MS and three PhD Mechanical Engineering students were supported on this project and their thesis research provided them with expertise in experimental, modeling, and controls in aftertreatment systems.

  14. The use of CETANER{trademark} for the reduction of particulate matter emissions in a turbocharged direct injection (TDI) diesel engine

    SciTech Connect (OSTI)

    Hess, H.S.; Chiodo, J.A.; Boehman, A.L.; Tijim, P.J.A.; Waller, F.J.

    1999-07-01

    In this experimental study, the effects of the addition of CETANER{trademark} to a premium diesel fuel at various blend levels (5%, 10% and 15% by weight) were evaluated using a 1.9 liter turbocharged direct injection diesel engine. CETANER{trademark}, a product developed by Air Products and Chemicals, Inc., can be manufactured from coal-derived syngas through a two-stage process: (i) Liquid Phase DiMethyl Ether synthesis (LPDME); and (ii) oxidative coupling of DiMethyl Ether (DME) to form long chain linear ethers. When compared to other oxygenated components currently being researched, CETANER has several key advantages: (1) it is derived from a non-petroleum feedstock; (2) it has a cetane number greater than 100; and (3) it will have a cost comparable to diesel fuel. Particulate matter emissions and exhaust gas composition (NOx and CO), were determined at six steady-state engine operating conditions. In addition, fuel properties (viscosity, cloud point, pour point, density, flash point and calorific value) of the various blends were also determined. Engine test results indicate that CETANER is effective in reducing particulate matter emissions at all blend levels tested, without any modifications to engine operating parameters. At the highest blend level (15% CETANER by weight), particulate matter emissions were reduced by greater than 20% when compared to premium diesel fuel.

  15. Heavy-duty diesel engine NO{sub x} reduction with nitrogen-enriched combustion air. Final CRADA report.

    SciTech Connect (OSTI)

    McConnell, S.; Energy Systems

    2010-07-28

    The concept of engine emissions control by modifying intake combustion gas composition from that of ambient air using gas separation membranes has been developed during several programs undertaken at Argonne. These have led to the current program which is targeted at heavy-duty diesel truck engines. The specific objective is reduction of NO{sub x} emissions by the target engine to meet anticipated 2007 standards while extracting a maximum of 5 percent power loss and allowing implementation within commercial constraints of size, weight, and cost. This report includes a brief review of related past programs, describes work completed to date during the current program, and presents interim conclusions. Following a work schedule adjustment in August 2002 to accommodate problems in module procurement and data analysis, activities are now on schedule and planned work is expected to be completed in September, 2004. Currently, we believe that the stated program requirements for the target engine can be met, based upon extrapolation of the work completed. Planned project work is designed to experimentally confirm these projections and result in a specification for a module package that will meet program objectives.

  16. Development of OTM Syngas Process and Testing of Syngas Derived Ultra-clean Fuels in Diesel Engines and Fuel Cells

    SciTech Connect (OSTI)

    E.T. Robinson; John Sirman; Prasad Apte; Xingun Gui; Tytus R. Bulicz; Dan Corgard; John Hemmings

    2005-05-01

    This final report summarizes work accomplished in the Program from January 1, 2001 through December 31, 2004. Most of the key technical objectives for this program were achieved. A breakthrough material system has lead to the development of an OTM (oxygen transport membrane) compact planar reactor design capable of producing either syngas or hydrogen. The planar reactor shows significant advantages in thermal efficiency and a step change reduction in costs compared to either autothermal reforming or steam methane reforming with CO{sub 2} recovery. Syngas derived ultra-clean transportation fuels were tested in the Nuvera fuel cell modular pressurized reactor and in International Truck and Engine single cylinder test engines. The studies compared emission and engine performance of conventional base fuels to various formulations of ultra-clean gasoline or diesel fuels. A proprietary BP oxygenate showed significant advantage in both applications for reducing emissions with minimal impact on performance. In addition, a study to evaluate new fuel formulations for an HCCI engine was completed.

  17. Zeolite-based SCR catalysts and their use in diesel engine emission treatment

    SciTech Connect (OSTI)

    Narula, Chaitanya K; Yang, Xiaofan

    2015-03-24

    A catalyst comprising a zeolite loaded with copper ions and at least one trivalent metal ion other than Al.sup.+3, wherein the catalyst decreases NO.sub.x emissions in diesel exhaust. The trivalent metal ions are selected from, for example, trivalent transition metal ions, trivalent main group metal ions, and/or trivalent lanthanide metal ions. In particular embodiments, the catalysts are selected from Cu--Fe-ZSM5, Cu--La-ZSM-5, Fe--Cu--La-ZSM5, Cu--Sc-ZSM-5, and Cu--In-ZSM5. The catalysts are placed on refractory support materials and incorporated into catalytic converters.

  18. Performance of the Low-Efficiency Diesel Particulate Filter for...

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

    Performance of the Low-Efficiency Diesel Particulate Filter for Diesel PM Reduction Poster presented at the 16th Directions in Engine-Efficiency and Emissions Research (DEER) ...

  19. Development of an Accelerated Ash-Loading Protocol for Diesel...

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

    Development of an Accelerated Ash-Loading Protocol for Diesel Particulate Filters Poster presentation at the 2007 Diesel Engine-Efficiency & Emissions Research Conference (DEER ...

  20. Alloy Foam Diesel Emissions Control School Bus Implementation...

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

    Alloy Foam Diesel Emissions Control School Bus Implementation Poster presentation from the 2007 Diesel Engine-Efficiency & Emissions Research Conference (DEER 2007). 13-16 August, ...

  1. Rapid Aging Protocols for Diesel Aftertreatment Devices: NOx...

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

    Rapid Aging Protocols for Diesel Aftertreatment Devices: NOx Abatement Catalysts Poster presentation at the 2007 Diesel Engine-Efficiency & Emissions Research Conference (DEER ...

  2. MobiCleanTM Soot Filter for Diesel Locomotiive Applications ...

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

    Diesel Applications A Standard Soot Generator for Diesel Particulate Filter Testing Plasmatron Fuel Reformer Development and Internal Combustion Engine Vehicle Applications

  3. Advanced Diesel Common Rail Injection System for Future Emission...

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

    Common Rail Injection System for Future Emission Legislation Advanced Diesel Common Rail Injection System for Future Emission Legislation 2004 Diesel Engine Emissions Reduction ...

  4. Heavy Truck Clean Diesel (HTCD) Program: 2007 Demonstration Truck...

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

    More Documents & Publications Transient Simulation of a 2007 Prototype Heavy-Duty Engine Diesel Aftertreatment Systems development Demonstration of a 50% Thermal Efficient Diesel ...

  5. Diesel HCCI with External Mixture Preparation | Department of...

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

    with External Mixture Preparation Diesel HCCI with External Mixture Preparation 2004 Diesel Engine Emissions Reduction (DEER) Conference Presentation: The Ohio State University PDF ...

  6. Effect of Biodiesel Blends on Diesel Particulate Filter Performance

    SciTech Connect (OSTI)

    Williams, A.; McCormick, R. L.; Hayes, R. R.; Ireland, J.; Fang, H. L.

    2006-11-01

    Presents results of tests of ultra-low sulfur diesel blended with soy-biodiesel at 5 percent using a Cummins ISB engine with a diesel particulate filter.

  7. Emissions from the European Light Duty Diesel Vehicle During...

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

    of diesel solid nanoparticle emissions using a catalytic stripper for comparison with Europe's PMP protocol Emission Performance of Modern Diesel Engines Fueled with Biodiesel

  8. X-Ray Characterization of Diesel Sprays | Department of Energy

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

    Sprays X-Ray Characterization of Diesel Sprays 2005 Diesel Engine Emissions Reduction (DEER) Conference Presentations and Posters 2005deerpowell.pdf (1.19 MB) More Documents & ...

  9. A Multicomponent Blend as a Diesel Fuel Surrogate for Compression...

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

    A Multicomponent Blend as a Diesel Fuel Surrogate for Compression Ignition Engine Applications Title A Multicomponent Blend as a Diesel Fuel Surrogate for Compression Ignition...

  10. Light-Duty Diesel Market Potential in North America | Department...

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

    Market Potential in North America Light-Duty Diesel Market Potential in North America 2005 Diesel Engine Emissions Reduction (DEER) Conference Presentations and Posters ...

  11. Advanced Ceramic Filter For Diesel Emission Control | Department...

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

    Advanced Ceramic Filter For Diesel Emission Control 2004 Diesel Engine Emissions Reduction (DEER) Conference Presentation: Dow Automotive 2004deermao.pdf (728.32 KB) More ...

  12. EPA Clean Diesel Funding Assistance Program

    Broader source: Energy.gov [DOE]

    The U.S. Environmental Protection Agency (EPA) is accepting applications for the Clean Diesel Funding Assistance Program for projects to achieve significant reductions in diesel emissions in terms of tons of pollution produced by diesel engines and diesel emissions exposure, particularly from fleets operating at or servicing goods movement facilities located in areas designated as having poor air quality.

  13. EPA Tribal Clean Diesel Funding Assistance Program

    Broader source: Energy.gov [DOE]

    The U.S. Environmental Protection Agency (EPA) is accepting applications for the Tribal Clean Diesel Funding Assistance Program for tribal projects to achieve significant reductions in diesel emissions in terms of tons of pollution produced by diesel engines and diesel emissions exposure. Eligible entities include tribal governments.

  14. 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

  15. Active Diesel Emission Control Technology for Sub-50 HP Engines with Low Exhaust Temperature Profiles

    Office of Energy Efficiency and Renewable Energy (EERE)

    A new type of emission control technology was presented for the small engines used in APU's and TRU's.

  16. High-Load Partially Premixed Combustion in a Heavy-Duty Diesel...

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

    High-Load Partially Premixed Combustion in a Heavy-Duty Diesel Engine High-Load Partially Premixed Combustion in a Heavy-Duty Diesel Engine 2005 Diesel Engine Emissions Reduction ...

  17. Cummins Work Toward Successful Introduction of Light-Duty Clean Diesel

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

    Engines in US | Department of Energy Work Toward Successful Introduction of Light-Duty Clean Diesel Engines in US Cummins Work Toward Successful Introduction of Light-Duty Clean Diesel Engines in US 2005 Diesel Engine Emissions Reduction (DEER) Conference Presentations and Posters 2005_deer_stang.pdf (109.08 KB) More Documents & Publications Cummins Light Truck Clean Diesel Cummins/DOE Light Truck Clean Diesel Engine Progress Report Cummins/DOE Light Truck Diesel Engine Progress Repor

  18. The contribution of lubricant to the formation of particulate matter with reactivity controlled compression ignition in light-duty diesel engines

    SciTech Connect (OSTI)

    Storey, John Morse; Curran, Scott; Dempsey, Adam B.; Lewis, Sr., Samuel Arthur; Reitz, Rolf; Walker, N. Ryan; Wright, Chris

    2014-12-25

    Reactivity controlled compression ignition (RCCI) has been shown in single- and multi-cylinder engine research to achieve high thermal efficiencies with ultra-low NOX and soot emissions. The nature of the particulate matter (PM) produced by RCCI operation has been shown in recent research to be different than that of conventional diesel combustion and even diesel low-temperature combustion. Previous research has shown that the PM from RCCI operation contains a large amount of organic material that is volatile and semi-volatile. However, it is unclear if the organic compounds are stemming from fuel or lubricant oil. The PM emissions from dual-fuel RCCI were investigated in this study using two engine platforms, with an emphasis on the potential contribution of lubricant. Both engine platforms used the same base General Motors (GM) 1.9-L diesel engine geometry. The first study was conducted on a single-cylinder research engine with primary reference fuels (PRFs), n-heptane, and iso-octane. The second study was conducted on a four-cylinder GM 1.9-L ZDTH engine which was modified with a port fuel injection (PFI) system while maintaining the stock direct injection fuel system. Multi-cylinder RCCI experiments were run with PFI gasoline and direct injection of 2-ethylhexyl nitrate (EHN) mixed with gasoline at 5 % EHN by volume. In addition, comparison cases of conventional diesel combustion (CDC) were performed. Particulate size distributions were measured, and PM filter samples were collected for analysis of lube oil components. Triplicate PM filter samples (i.e., three individual filter samples) for both gas chromatography-mass spectroscopy (GC-MS; organic) analysis and X-ray fluorescence (XRF; metals) were obtained at each operating point and queued for analysis of both organic species and lubricant metals. Here, the results give a clear indication that lubricants do not contribute significantly to the formation of RCCI PM.

  19. The contribution of lubricant to the formation of particulate matter with reactivity controlled compression ignition in light-duty diesel engines

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Storey, John Morse; Curran, Scott; Dempsey, Adam B.; Lewis, Sr., Samuel Arthur; Reitz, Rolf; Walker, N. Ryan; Wright, Chris

    2014-12-25

    Reactivity controlled compression ignition (RCCI) has been shown in single- and multi-cylinder engine research to achieve high thermal efficiencies with ultra-low NOX and soot emissions. The nature of the particulate matter (PM) produced by RCCI operation has been shown in recent research to be different than that of conventional diesel combustion and even diesel low-temperature combustion. Previous research has shown that the PM from RCCI operation contains a large amount of organic material that is volatile and semi-volatile. However, it is unclear if the organic compounds are stemming from fuel or lubricant oil. The PM emissions from dual-fuel RCCI weremore » investigated in this study using two engine platforms, with an emphasis on the potential contribution of lubricant. Both engine platforms used the same base General Motors (GM) 1.9-L diesel engine geometry. The first study was conducted on a single-cylinder research engine with primary reference fuels (PRFs), n-heptane, and iso-octane. The second study was conducted on a four-cylinder GM 1.9-L ZDTH engine which was modified with a port fuel injection (PFI) system while maintaining the stock direct injection fuel system. Multi-cylinder RCCI experiments were run with PFI gasoline and direct injection of 2-ethylhexyl nitrate (EHN) mixed with gasoline at 5 % EHN by volume. In addition, comparison cases of conventional diesel combustion (CDC) were performed. Particulate size distributions were measured, and PM filter samples were collected for analysis of lube oil components. Triplicate PM filter samples (i.e., three individual filter samples) for both gas chromatography-mass spectroscopy (GC-MS; organic) analysis and X-ray fluorescence (XRF; metals) were obtained at each operating point and queued for analysis of both organic species and lubricant metals. Here, the results give a clear indication that lubricants do not contribute significantly to the formation of RCCI PM.« less

  20. Develop the dual fuel conversion system for high output, medium speed diesel engines. Final report

    SciTech Connect (OSTI)

    1998-07-16

    The original plan for the project involved design modifications to an existing system to enhance its performance and increase the limit of power that was achieved by the original design and to apply the higher performance product to the full sized engine and test its performance. The new system would also be applied to a different engine model. The specific work would include the redesign of gas injectors, piston configurations and two types of igniters, engine instrumentation, monitoring and testing.

  1. A Comparison of Combustion and Emissions of Diesel Fuels and...

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

    A Comparison of Combustion and Emissions of Diesel Fuels and Oxygenated Fuels in a Modern DI Diesel Engine A Comparison of Combustion and Emissions of Diesel Fuels and Oxygenated ...

  2. Development of Urea Dosing System for 10 Liter Heavy Duty Diesel Engine Powered Vehicle

    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.

  3. The Diesel Engine Powering Light-Duty Vehicles: Today and Tomorrow...

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

    Engine Emissions Reduction (DEER) Conference Presentation: Volkwagen AG, Wolfsburg, Germany 2004deerschindler.pdf (951.51 KB) More Documents & Publications Accelerating ...

  4. Beyond Diesel - Renewable Diesel

    SciTech Connect (OSTI)

    Not Available

    2002-07-01

    CTTS fact sheet describing NREL's new Renewable Fuels and Lubricants (ReFUEL) Research Laboratory, which will be used to facilitate increased renewable diesel use in heavy-duty vehicles.

  5. Can We Accurately Measure In-Use Emissions from Heavy-Duty Diesel...

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

    Can We Accurately Measure In-Use Emissions from Heavy-Duty Diesel Engines? Poster presentation at the 2007 Diesel Engine-Efficiency & Emissions Research Conference (DEER 2007). ...

  6. Evaluation of SCR and DOC/CPF Tech in Diesel Exhaust Emission...

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

    for Engines Using Diesel and Biodiesel Fuels Investigation on continuous soot ... Model, Control System, and OBD Development for Engines Using Diesel and Biodiesel Fuels

  7. Investigation of Diesel combustion using multiple injection strategies for idling after cold start of passenger-car engines

    SciTech Connect (OSTI)

    Payri, F.; Broatch, A.; Salavert, J.M.; Martin, J.

    2010-10-15

    A comprehensive investigation was carried out in order to better understand the combustion behaviour in a low compression ratio DI Diesel engine when multiple injection strategies are applied just after the engine cold starts in low temperature conditions (idling). More specifically, the aim of this study was twofold: on one hand, to understand the effect of the multiple injection strategies on the indicated mean effective pressure; on the other hand, to contribute to the understanding of combustion stability characterized by the coefficient of variation of indicated mean effective pressure. The first objective was fulfilled by analyzing the rate of heat release obtained by in-cylinder pressure diagnosis. The results showed that the timing of the pilot injection closest to the main injection was the most influential parameter based on the behaviour of the rate of heat release (regardless of the multiple injection strategy applied). For the second objective, the combustion stability was found to be correlated with the combustion centroid angle. The results showed a trend between them and the existence of a range of centroid angles where the combustion stability is strong enough. In addition, it was also evident that convenient split injection allows shifting the centroid to such a zone and improves combustion stability after start. (author)

  8. Mixed-Source EGR for Enabling High Efficiency Clean Combustion Modes in a Light-Duty Diesel Engine

    SciTech Connect (OSTI)

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

    2008-01-01

    The source of exhaust gas recirculation (EGR), and consequently composition and temperature, has a significant effect on advanced combustion modes including stability, efficiency, and emissions. The effects of high-pressure loop EGR (HPL EGR) and low-pressure loop EGR (LPL EGR) on achieving high efficiency clean combustion (HECC) modes in a light-duty diesel engine were characterized in this study. High dilution operation is complicated in real-world situations due to inadequate control of mixture temperature and the slow response of LPL EGR systems. Mixed-source EGR (combination of HPL EGR and LPL EGR) was investigated as a reasonable approach for controlling mixture temperature. The potential of mixed-source EGR has been explored using LPL EGR as a 'base' for dilution rather than as a sole source. HPL EGR provides the 'trim' for controlling mixture temperature and has the potential for enabling precise control of dilution targets. This approach also has a benefit where LPL EGR does not provide sufficient dilution for achieving conditions appropriate for HECC operation. The balance of the required dilution could be achieved with HPL EGR mitigating the need for throttling or a LPL EGR pump. The results of this investigation revealed significant differences in engine-out emissions and performance for various EGR sources.

  9. Performance Evaluation and Optimization of Diesel Fuel Properties and Chemistry in an HCCI Engine

    SciTech Connect (OSTI)

    Bunting, Bruce G; Eaton, Scott J; Crawford, Robert W

    2009-01-01

    The nine CRC fuels for advanced combustion engines (FACE fuels) have been evaluated in a simple, premixed HCCI engine under varying conditions of fuel rate, air-fuel ratio, and intake temperature. Engine performance was found to vary mainly as a function of combustion phasing as affected by fuel cetane and engine control variables. The data was modeled using statistical techniques involving eigenvector representation of the fuel properties and engine control variables, to define engine response and allow optimization across the fuels for best fuel efficiency. In general, the independent manipulation of intake temperature and air-fuel ratio provided some opportunity for improving combustion efficiency of a specific fuel beyond the direct effect of targeting the optimum combustion phasing of the engine (near 5 CAD ATDC). High cetane fuels suffer performance loss due to easier ignition, resulting in lower intake temperatures, which increase HC and CO emissions and result in the need for more advanced combustion phasing. The FACE fuels also varied in T90 temperature and % aromatics, independent of cetane number. T90 temperature was found to have an effect on engine performance when combined with high centane, but % aromatics did not, when evaluated independently of cetane and T90.

  10. Application of Synthetic Diesel Fuels | Department of Energy

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

    Synthetic Diesel Fuels Application of Synthetic Diesel Fuels 2005 Diesel Engine Emissions Reduction (DEER) Conference Presentations and Posters 2005_deer_schaberg.pdf (462.75 KB) More Documents & Publications Effect of GTL Diesel Fuels on Emissions and Engine Performance The Potential of GTL Diesel to Meet Future Exhaust Emission Limits Performance Characteristics of Coal-to-Liquids (CTL) Diesel in a 50-State Emissions Compliant Passenger Car

  11. Update on 2007 Diesel Particulate Measurement Research | Department of

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

    Energy 2007 Diesel Particulate Measurement Research Update on 2007 Diesel Particulate Measurement Research 2005 Diesel Engine Emissions Reduction (DEER) Conference Presentations and Posters 2005_deer_shimpi.pdf (228.33 KB) More Documents & Publications Real-Time Measurement of Diesel Trap Efficiency Mass Correlation of Engine Emissions with Spectral Instruments Real-Time Particulate Mass Measurements Pre and Post Diesel Particulate Filters for LIght-Duty Diesel Vehicles

  12. DOE's Gasoline/Diesel PM Split Study | Department of Energy

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

    Gasoline/Diesel PM Split Study DOE's Gasoline/Diesel PM Split Study 2005 Diesel Engine Emissions Reduction (DEER) Conference Presentations and Posters 2005_deer_fujita.pdf (187.6 KB) More Documents & Publications DOE's Gasoline/Diesel PM Split Study DOE's Gasoline/Diesel PM Split Study Weekend/Weekday Ozone Study in the South Coast Air Basin

  13. Update on Diesel Exhaust Emission Control Technology and Regulations |

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

    Department of Energy Control Technology and Regulations Update on Diesel Exhaust Emission Control Technology and Regulations 2004 Diesel Engine Emissions Reduction (DEER) Conference Presentation: Corning 2004_deer_johnson2.pdf (1.48 MB) More Documents & Publications Light Duty Diesels in the United States - Some Perspectives Review of Diesel Emission Control Technology Update on Diesel Exhaust Emission Control

  14. Heavy-Truck Clean Diesel (HTCD) Program | Department of Energy

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

    Heavy-Truck Clean Diesel (HTCD) Program Heavy-Truck Clean Diesel (HTCD) Program 2004 Diesel Engine Emissions Reduction (DEER) Conference Presentation: Caterpillar 2004_deer_duffy.pdf (1.36 MB) More Documents & Publications Diesel HCCI Results at Caterpillar Diesel HCCI Results at Caterpillar Heavy-Duty HCCI Development Activities

  15. An in-cylinder study of the particulate/NO{sub x} trade-off in a DI Diesel Engine. Draft of final report

    SciTech Connect (OSTI)

    Litzinger, T.A.; Santavicca, D.A.; Santoro, R.J.

    1994-07-01

    The goal of the work performed during the contract period was to establish the ability to study soot and NO within the combustion chamber of a DI Diesel engine and to couple these measurements with actual exhaust emissions. This work was motivated by the need to obtain a more complete understanding of the particulate/NO{sub X} trade-off, observed in Diesel engines, to aid engine designers in meeting emissions limits. In order to achieve the desired goal, an optically accessible DI Diesel engine was designed and constructed. Also, planar imaging methods for imaging soot and NO were developed in laboratory flames and were then applied to the engine. For the study of soot, planar Mie scattering was used and a polarization ratio method was investigated to distinguish soot from fuel droplets. The Mie scattering technique proved to be well suited for the engine, and extensive results were obtained. In order to observe NO, planar laser induced fluorescence was used and it was successfully applied in the engine. In addition to these techniques, high speed combustion photography and shadowgraph photography were applied to obtain general characteristics of the combustion process. As a final diagnostic, actual engine emissions were measured. This report begins with a brief discussion of the problem under investigation and a summary of other studies of the NO{sub x}/particulate trade-off. Following these sections is a summary of the accomplishments and results from the present study. Finally, detailed results are presented through the six technical papers which were written during the contract period; these papers are appended to the report.

  16. Model-Based Transient Calibration Optimization for Next Generation Diesel

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

    Engines | Department of Energy Model-Based Transient Calibration Optimization for Next Generation Diesel Engines Model-Based Transient Calibration Optimization for Next Generation Diesel Engines 2005 Diesel Engine Emissions Reduction (DEER) Conference Presentations and Posters 2005_deer_atkinson.pdf (585.55 KB) More Documents & Publications Future Diesel Engine Thermal Efficiency Improvement andn Emissions Control Technology Integrated Engine and Aftertreatment Technology Roadmap for EPA

  17. Benefits and Drawbacks of Compression Ratio Reduction in PCCI Combustion Application in an Advanced LD Diesel Engine

    Broader source: Energy.gov [DOE]

    Study of the effect of compression ratio on performance of light duty diesel operating with PCCI calibration, near EURO6/Tier 2 Bin 5 NOx limits.

  18. Measurements of instantaneous heat flux to metal and ceramic surfaces in a diesel engine

    SciTech Connect (OSTI)

    Huang, J.C.; Borman, G.L.

    1987-02-01

    The effects of surface materials and extent of insulation on the heat transfer to the head of an open-chamber diesel were studied. A large instrumentation plug designed to incorporate plates of various materials on the gas-side surface was utilized with a special research head. Instantaneous rates of heat transfer to the plate gas-side surface were measured. Measurement results obtained with a zirconia plate and an insulated metal plate are compared to data for an inunsulated metal plate. The insulation of the metal plate increased its gas-side surface temperature over the uninsulated case by about the same amount achieved with a 6.35-mm-thick zirconia plate. The magnitude of the surface temperature swing for zirconia is not as high as expected from conduction theory, but is substantially higher than that for the uninsulated metal. Significant reductions of steady-state heat fluxes were achieved with both the zirconia and the insulated metal compared to the uninsulated metal.

  19. Experimental Investigation of Fuel-Reactivity Controlled Compression Ignition (RCCI) Combustion Mode in a Multi-Cylinder, Light-Duty Diesel Engine

    SciTech Connect (OSTI)

    Cho, Kukwon; Curran, Scott; Prikhodko, Vitaly Y; Sluder, Scott; Parks, II, James E; Wagner, Robert M

    2011-01-01

    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

  20. High Efficiency Clean Combustion Engine Designs for Gasoline...

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

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

  1. Recent Developments in BMW's Diesel Technology | Department of Energy

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

    Developments in BMW's Diesel Technology Recent Developments in BMW's Diesel Technology 2003 DEER Conference Presentation: Bayerische Motoren Werke AG 2003_deer_steinparzer.pdf (1.15 MB) More Documents & Publications BMW Diesel - Engine Concepts for Efficient Dynamics BMW Diesel Engines - Dynamic, Efficient and Clean The BMW Approach to Tier2 Bin5

  2. Neutron Imaging of Diesel Particulate Filters | Department of Energy

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

    Neutron Imaging of Diesel Particulate Filters Neutron Imaging of Diesel Particulate Filters Neutron computed tomography shows soot and ash loading in a cordierite diesel particulate filter deer09_bilheux.pdf (782.15 KB) More Documents & Publications Neutron Imaging of Advanced Engine Technologies Neutron Imaging of Advanced Engine Technologies Development of an Accelerated Ash-Loading Protocol for Diesel Particulate Filters

  3. Mixing and flame structures inferred from OH-PLIF for conventional and low-temperature diesel engine combustion

    SciTech Connect (OSTI)

    Singh, Satbir; Musculus, Mark P.B.; Reitz, Rolf D.

    2009-10-15

    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)

  4. 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).

  5. Particle Sensor for Diesel Combustion Monitoring | Department of Energy

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

    Sensor for Diesel Combustion Monitoring Particle Sensor for Diesel Combustion Monitoring 2004 Diesel Engine Emissions Reduction (DEER) Conference Presentation: University of Minnesota and Honeywell International 2004_deer_kittleson2.pdf (396.91 KB) More Documents & Publications On-Board Engine Exhaust Particulate Matter Sensor for HCCI and Conventional Diesel Engines High-Energy, Pulsed-Laser Diagnostics for Real-Time Measurements of Reciprocating Engine PM Emissions Lowest Engine-Out

  6. Ten Years of Development Experience with Advanced Light Truck Diesel

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

    Engines | Department of Energy Ten Years of Development Experience with Advanced Light Truck Diesel Engines Ten Years of Development Experience with Advanced Light Truck Diesel Engines 2004 Diesel Engine Emissions Reduction (DEER) Conference Presentation: Cummins Engines 2004_deer_stang1.pdf (49.18 KB) More Documents & Publications The California Demonstration Program for Control of PM from Diesel Backup Generators = Demonstrated Petroleum Reduction Using Oil Bypass Filter Technology on

  7. Preserving Diesel Exhaust Ultrafine (Nano-) Particulate Structure in

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

    Genotoxicity Studies to Support Engineering Development of Emission Controls | Department of Energy Preserving Diesel Exhaust Ultrafine (Nano-) Particulate Structure in Genotoxicity Studies to Support Engineering Development of Emission Controls Preserving Diesel Exhaust Ultrafine (Nano-) Particulate Structure in Genotoxicity Studies to Support Engineering Development of Emission Controls Poster presentation at the 2007 Diesel Engine-Efficiency & Emissions Research Conference (DEER

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

    SciTech Connect (OSTI)

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

    2009-01-01

    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.

  9. 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)

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

    2012-10-26

    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.

  10. The effect of TDC temperature and density on the liquid-phase fuel penetration in a D.I. Diesel engine

    SciTech Connect (OSTI)

    Espey, C.; Dec, J.E.

    1995-12-01

    A parametric study of the liquid-phase fuel penetration of evaporating Diesel fuel jets has been conducted in a directinjection Diesel engine using laser elastic-scatter imaging. The experiments were conducted in an optically accessible Diesel engine of the ``heavy-duty`` size class at a representative medium speed (1200 rpm) operating condition. The density and temperature at TDC were varied systematically by adjusting the intake temperature and pressure. At all operating conditions the measurements show that initially the liquid fuel penetrates almost linearly with increasing crank angle until reaching a maximum length. Then, the liquid-fuel penetration length remains fairly constant although fuel injection continues. At a TDC density of 16.6 kg/m{sup 3} and a temperature of about 1000 K the maximum penetration length is approximately 23 mm. However, it varies significantly as TDC conditions are changed, with the liquid-length being less at higher temperatures and at higher densities. The corresponding apparent heat release rate plots are presented and the results of the liquid-phase fuel penetration are discussed with respect to the ignition delay and premixed bum fraction.

  11. Pleated Ceramic Fiber Diesel Particulate Filter | Department of Energy

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

    Pleated Ceramic Fiber Diesel Particulate Filter Pleated Ceramic Fiber Diesel Particulate Filter 2005 Diesel Engine Emissions Reduction (DEER) Conference Presentations and Posters 2005_deer_nixdorf.pdf (173.63 KB) More Documents & Publications Versatile Diesel Particulate Filter Cartridge Any Size, Any Shape Ultra-Lite Diesel Particulate Filter Cartridge for Reduced Regeneration Time and Fuel Consumption Expanded Capacity Microwave-Cleaned Diesel Particulate Filter

  12. Assessment of Health Hazards of Repeated Inhalation of Diesel Emissions, with Comparisons to Other Source Emissions

    Broader source: Energy.gov [DOE]

    2004 Diesel Engine Emissions Reduction (DEER) Conference Presentation: National Environmental Respiratory Center

  13. High-Energy Laser Diagnostics (HELD) for the Measurement of Diesel Particulate Matter

    Broader source: Energy.gov [DOE]

    2004 Diesel Engine Emissions Reduction (DEER) Conference Presentation: Sandia National Laboratories, Combustion Research Facility

  14. The California Demonstration Program for Control of PM from Diesel Backup Generators =

    Broader source: Energy.gov [DOE]

    2004 Diesel Engine Emissions Reduction (DEER) Conference Presentation: University of California, Riverside

  15. Sick of Soot: The Public Health and Economic Impacts of Diesel Pollution in California

    Office of Energy Efficiency and Renewable Energy (EERE)

    2004 Diesel Engine Emissions Reduction (DEER) Conference Presentation: Union of Concerned Scientists

  16. HCCI in a Variable Compression Ratio Engine: Effects of Engine...

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

    in a Variable Compression Ratio Engine: Effects of Engine Variables HCCI in a Variable Compression Ratio Engine: Effects of Engine Variables 2004 Diesel Engine Emissions Reduction ...

  17. Reformulated diesel fuel and method

    DOE Patents [OSTI]

    McAdams, Hiramie T [Carrollton, IL; Crawford, Robert W [Tucson, AZ; Hadder, Gerald R [Oak Ridge, TN; McNutt, Barry D [Arlington, VA

    2006-08-22

    A method for mathematically identifying at least one diesel fuel suitable for combustion in an automotive diesel engine with significantly reduced emissions and producible from known petroleum blendstocks using known refining processes, including the use of cetane additives (ignition improvers) and oxygenated compounds.

  18. Substrate Studies of an Electrically-Assisted Diesel Particulate...

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

    Transient distributed DPF wall and gas temperature were simultaneously measured using ... Filter Regeneration Durability of Diesel Engine Particulate Filters (Agreement ...

  19. Diesel Aftertreatment Systems development | Department of Energy

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

    Useful Life (120,000 miles) Exhaust Emission Performance of a NOx Adsorber and Diesel Particle Filter Equipped Passenger Car and Medium-Duty Engine in Conjunction with ...

  20. Clean Diesel Technologies Inc | Open Energy Information

    Open Energy Info (EERE)

    products that reduce emissions from diesel engines while simultaneously improving fuel economy and power. Coordinates: 42.75294, -73.068531 Show Map Loading map......

  1. On-Board Engine Exhaust Particulate Matter Sensor for HCCI and...

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

    Engine Exhaust Particulate Matter Sensor for HCCI and Conventional Diesel Engines On-Board Engine Exhaust Particulate Matter Sensor for HCCI and Conventional Diesel Engines 2009 DOE ...

  2. Urea SCR and DPF System for Diesel Sport Utility Vehicle Meeting...

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

    5 Diesel Engine Emissions Reduction (DEER) Conference Presentations and Posters 2005deerlambert.pdf (232.58 KB) More Documents & Publications Urea SCR and DPF System for Diesel ...

  3. X-Ray Characterization of Diesel Sprays and the Effects of Nozzle...

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

    Sprays and the Effects of Nozzle Geometry X-Ray Characterization of Diesel Sprays and the Effects of Nozzle Geometry 2004 Diesel Engine Emissions Reduction (DEER) Conference ...

  4. LD Diesels in U.S. Marketplace - Technical Progress Will Lead...

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

    Diesel Engine Emissions Reduction (DEER) Conference Presentations and Posters 2005deergray.pdf (790.46 KB) More Documents & Publications Comparison of Conventional Diesel and ...

  5. Diesel Emission Control in Review

    Broader source: Energy.gov [DOE]

    Presentation given at the 2007 Diesel Engine-Efficiency & Emissions Research Conference (DEER 2007). 13-16 August, 2007, Detroit, Michigan. Sponsored by the U.S. Department of Energy's (DOE) Office of FreedomCAR and Vehicle Technologies (OFCVT).

  6. Impact of rail pressure and biodiesel fueling on the particulate morphology and soot nanostructures from a common-rail turbocharged direct injection diesel engine

    SciTech Connect (OSTI)

    Ye, Peng; Vander Wal, Randy; Boehman, Andre L.; Toops, Todd J.; Daw, C. Stuart; Sun, Chenxi; Lapuerta, Magin; Agudelo, John

    2014-12-26

    The effect of rail pressure and biodiesel fueling on the morphology of exhaust particulate agglomerates and the nanostructure of primary particles (soot) was investigated with a common-rail turbocharged direct injection diesel engine. The engine was operated at steady state on a dynamometer running at moderate speed with both low (30%) and medium–high (60%) fixed loads, and exhaust particulate was sampled for analysis. Ultra-low sulfur diesel and its 20% v/v blends with soybean methyl ester biodiesel were used. Fuel injection occurred in a single event around top dead center at three different injection pressures. Exhaust particulate samples were characterized with TEM imaging, scanning mobility particle sizing, thermogravimetric analysis, Raman spectroscopy, and XRD analysis. Particulate morphology and oxidative reactivity were found to vary significantly with rail pressure and with biodiesel blend level. Higher biodiesel content led to increases in the primary particle size and oxidative reactivity but did not affect nanoscale disorder in the as-received samples. For particulates generated with higher injection pressures, the initial oxidative reactivity increased, but there was no detectable correlation with primary particle size or nanoscale disorder.

  7. Impact of rail pressure and biodiesel fueling on the particulate morphology and soot nanostructures from a common-rail turbocharged direct injection diesel engine

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Ye, Peng; Vander Wal, Randy; Boehman, Andre L.; Toops, Todd J.; Daw, C. Stuart; Sun, Chenxi; Lapuerta, Magin; Agudelo, John

    2014-12-26

    The effect of rail pressure and biodiesel fueling on the morphology of exhaust particulate agglomerates and the nanostructure of primary particles (soot) was investigated with a common-rail turbocharged direct injection diesel engine. The engine was operated at steady state on a dynamometer running at moderate speed with both low (30%) and medium–high (60%) fixed loads, and exhaust particulate was sampled for analysis. Ultra-low sulfur diesel and its 20% v/v blends with soybean methyl ester biodiesel were used. Fuel injection occurred in a single event around top dead center at three different injection pressures. Exhaust particulate samples were characterized with TEMmore » imaging, scanning mobility particle sizing, thermogravimetric analysis, Raman spectroscopy, and XRD analysis. Particulate morphology and oxidative reactivity were found to vary significantly with rail pressure and with biodiesel blend level. Higher biodiesel content led to increases in the primary particle size and oxidative reactivity but did not affect nanoscale disorder in the as-received samples. For particulates generated with higher injection pressures, the initial oxidative reactivity increased, but there was no detectable correlation with primary particle size or nanoscale disorder.« less

  8. Impact of rail pressure and biodiesel fueling on the particulate morphology and soot nanostructures from a common-rail turbocharged direct injection diesel engine

    SciTech Connect (OSTI)

    Ye, Peng; Vander Wal, Randy; Boehman, Andre L.; Toops, Todd J.; Daw, C. Stuart; Sun, Chenxi; Lapuerta, Magin; Agudelo, John

    2014-12-26

    The effect of rail pressure and biodiesel fueling on the morphology of exhaust particulate agglomerates and the nanostructure of primary particles (soot) was investigated with a common-rail turbocharged direct injection diesel engine. The engine was operated at steady state on a dynamometer running at moderate speed with both low (30%) and mediumhigh (60%) fixed loads, and exhaust particulate was sampled for analysis. Ultra-low sulfur diesel and its 20% v/v blends with soybean methyl ester biodiesel were used. Fuel injection occurred in a single event around top dead center at three different injection pressures. Exhaust particulate samples were characterized with TEM imaging, scanning mobility particle sizing, thermogravimetric analysis, Raman spectroscopy, and XRD analysis. Particulate morphology and oxidative reactivity were found to vary significantly with rail pressure and with biodiesel blend level. Higher biodiesel content led to increases in the primary particle size and oxidative reactivity but did not affect nanoscale disorder in the as-received samples. For particulates generated with higher injection pressures, the initial oxidative reactivity increased, but there was no detectable correlation with primary particle size or nanoscale disorder.

  9. Comparison of Conventional Diesel and Reactivity Controlled Compression

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

    Ignition (RCCI) Combustion in a Light-Duty Engine | Department of Energy Conventional Diesel and Reactivity Controlled Compression Ignition (RCCI) Combustion in a Light-Duty Engine Comparison of Conventional Diesel and Reactivity Controlled Compression Ignition (RCCI) Combustion in a Light-Duty Engine CFD modeling was used to compare conventional diesel and dual-fuel Reactivity Controlled Compression Ignition combustion at US Tier 2 Bin 5 NOx levels, while accounting for Diesel Exhaust Fluid

  10. Durability Evaluation of an Integrated Diesel NOx Adsorber A/T Subsystem at Light-Duty Operation

    Broader source: Energy.gov [DOE]

    2004 Diesel Engine Emissions Reduction (DEER) Conference Presentation: Cummins Inc. and Johnson-Matthey

  11. Future Potential of Hybrid and Diesel Powertrains in the U.S. Light-Duty Vehicle Market

    Broader source: Energy.gov [DOE]

    2004 Diesel Engine Emissions Reduction (DEER) Conference Presentation: Oak Ridge National Laboratory

  12. Development of OTM Syngas Process and Testing of Syngas Derived Ulta-clean Fuels in Diesel Engines and Fuel Cells Budget Period 3

    SciTech Connect (OSTI)

    E.T. Robinson; John Sirman; Prasad Apte; Xingun Gui; Tytus R. Bulicz; Dan Corgard; Siv Aasland; Kjersti Kleveland; Ann Hooper; Leo Bonnell; John Hemmings; Jack Chen; Bart A. Van Hassel

    2004-12-31

    This topical report summarizes work accomplished for the Program from January 1, 2003 through December 31,2004 in the following task areas: Task 1--Materials Development; Task 2--Composite Development; Task 4--Reactor Design and Process Optimization; Task 8--Fuels and Engine Testing; 8.1 International Diesel Engine Program; and Task IO: Program Management. Most of the key technical objectives for this budget period were achieved. Only partial success was achieved relative to cycle testing under pressure Major improvements in material performance and element reliability have been achieved. A breakthrough material system has driven the development of a compact planar reactor design capable of producing either hydrogen or syngas. The planar reactor shows significant advantages in thermal efficiency and costs compared to either steam methane reforming with CO{sub 2} recovery or autothermal reforming. The fuel and engine testing program is complete The single cylinder test engine evaluation of UCTF fuels begun in Budget Period 2 was finished this budget period. In addition, a study to evaluate new fuel formulations for an HCCl engine was completed.

  13. Development of wear-resistant ceramic coatings for diesel engine components. Volume 1, Coating development and tribological testing: Final report: DOE/ORNL Ceramic Technology Project

    SciTech Connect (OSTI)

    Naylor, M.G.S.

    1992-06-01

    The tribological properties of a variety of advanced coating materials have been evaluated under conditions which simulate the piston ring -- cylinder liner environment near top ring reversal in a heavy duty diesel engine. Coated ``ring`` samples were tested against a conventional pearlitic grey cast iron liner material using a high temperature reciprocating wear test rig. Tests were run with a fresh CE/SF 15W40lubricant at 200 and 350{degrees}C, with a high-soot, engine-tested oil at 200{degrees}C and with no lubrication at 200{degrees}C. For lowest wear under boundary lubricated conditions, the most promising candidates to emerge from this study were high velocity oxy-fuel (HVOF) Cr{sub 3} C{sub 2} - 20% NiCr and WC - 12% Co cermets, low temperature arc vapor deposited (LTAVD) CrN and plasma sprayed chromium oxides. Also,plasma sprayed Cr{sub 2}O{sub 3} and A1{sub 2}O{sub 3}-ZrO{sub 2} materials were found to give excellent wear resistance in unlubricated tests and at extremely high temperatures (450{degrees}C) with a syntheticoil. All of these materials would offer substantial wear reductions compared to the conventional electroplated hard chromium ring facing and thermally sprayed metallic coatings, especially at high temperatures and with high-soot oils subjected to degradation in diesel environments. The LTAVD CrN coating provided the lowest lubricated wear rates of all the materials evaluated, but may be too thin (4 {mu}m) for use as a top ring facing. Most of the coatings evaluated showed higher wear rates with high-soot, engine-tested oil than with fresh oil, with increases of more than a factor of ten in some cases. Generally, metallic materials were found to be much more sensitive to soot/oil degradation than ceramic and cermet coatings. Thus, decreased ``soot sensitivity`` is a significant driving force for utilizing ceramic or cermet coatings in diesel engine wear applications.

  14. DIESEL FUEL LUBRICATION

    SciTech Connect (OSTI)

    Qu, Jun

    2012-01-01

    The diesel fuel injector and pump systems contain many sliding interfaces that rely for lubrication upon the fuels. The combination of the poor fuel lubricity and extremely tight geometric clearance between the plunger and bore makes the diesel fuel injector vulnerable to scuffing damage that severely limits the engine life. In order to meet the upcoming stricter diesel emission regulations and higher engine efficiency requirements, further fuel refinements that will result in even lower fuel lubricity due to the removal of essential lubricating compounds, more stringent operation conditions, and tighter geometric clearances are needed. These are expected to increase the scuffing and wear vulnerability of the diesel fuel injection and pump systems. In this chapter, two approaches are discussed to address this issue: (1) increasing fuel lubricity by introducing effective lubricity additives or alternative fuels, such as biodiesel, and (2) improving the fuel injector scuffing-resistance by using advanced materials and/or surface engineering processes. The developing status of the fuel modification approach is reviewed to cover topics including fuel lubricity origins, lubricity improvers, alternative fuels, and standard fuel lubricity tests. The discussion of the materials approach is focused on the methodology development for detection of the onset of scuffing and evaluation of the material scuffing characteristics.

  15. Requirements-Driven Diesel Catalyzed Particulate Trap Design and

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

    Optimization | Department of Energy Requirements-Driven Diesel Catalyzed Particulate Trap Design and Optimization Requirements-Driven Diesel Catalyzed Particulate Trap Design and Optimization 2005 Diesel Engine Emissions Reduction (DEER) Conference Presentations and Posters 2005_deer_harris.pdf (388.49 KB) More Documents & Publications Diesel Emission Control Technology Review Investigation of Aging Mechanisms in Lean NOx Traps Diesel Particulate Filters: Market Introducution in Euro

  16. Influence of fuel variables on the operation of automotive open and pre-chamber diesel and spark ignited stratified charge engines: a literature study covering petroleum and syncrude derived fuels

    SciTech Connect (OSTI)

    Needham, J.R.

    1980-09-01

    A literature study has been carried out to ascertain the influence of fuels and fuel variables on the operation of automotive diesel and spark ignited stratified charge engines with a view to understanding the impact of future fuels derived from Syncrude. The findings from the search are presented and discussed in detail, conclusions reached and recommendations made.

  17. Clean Diesel: The Progress, The Message, The Opportunity | Department of

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

    Energy Diesel: The Progress, The Message, The Opportunity Clean Diesel: The Progress, The Message, The Opportunity Presentation given at the 2007 Diesel Engine-Efficiency & Emissions Research Conference (DEER 2007). 13-16 August, 2007, Detroit, Michigan. Sponsored by the U.S. Department of Energy's (DOE) Office of FreedomCAR and Vehicle Technologies (OFCVT). deer07_schaeffer.pdf (1.27 MB) More Documents & Publications The Diesel Engine Powering Light-Duty Vehicles: Today and Tomorrow

  18. Retrofit Diesel Emissions Control System Providing 50% NOxControl |

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

    Department of Energy Diesel Emissions Control System Providing 50% NOxControl Retrofit Diesel Emissions Control System Providing 50% NOxControl 2005 Diesel Engine Emissions Reduction (DEER) Conference Presentations and Posters 2005_deer_yee.pdf (660.21 KB) More Documents & Publications Transient Dynamometer Testing of a Single-Leg NOX Adsorber Combined with a Fuel Processor for Enhanced NOx Control Fuel Processor Enabled NOx Adsorber Aftertreatment System for Diesel Engine Emissions

  19. Dilute Clean Diesel Combustion Achieves Low Emissions and High Efficiency

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

    While Avoiding Control Problems of HCCI | Department of Energy Dilute Clean Diesel Combustion Achieves Low Emissions and High Efficiency While Avoiding Control Problems of HCCI Dilute Clean Diesel Combustion Achieves Low Emissions and High Efficiency While Avoiding Control Problems of HCCI 2005 Diesel Engine Emissions Reduction (DEER) Conference Presentations and Posters 2005_deer_mueller.pdf (572.11 KB) More Documents & Publications Multicylinder Diesel Engine Design for HCCI Operation

  20. Heavy Truck Clean Diesel (HTCD) Program: 2007 Demonstration Truck |

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

    Department of Energy Heavy Truck Clean Diesel (HTCD) Program: 2007 Demonstration Truck Heavy Truck Clean Diesel (HTCD) Program: 2007 Demonstration Truck 2003 DEER Conference Presentation: Caterpillar Incorporated 2003_deer_milam.pdf (10.59 MB) More Documents & Publications Transient Simulation of a 2007 Prototype Heavy-Duty Engine Diesel Aftertreatment Systems development Demonstration of a 50% Thermal Efficient Diesel Engine - Including HTCD Program Overview

  1. Size-Resolved Density Measurements of Particulate Emissions from an Advanced Combustion Diesel Engine: Effect of Aggregate Morphology

    SciTech Connect (OSTI)

    Barone, Teresa L; Storey, John Morse; Prikhodko, Vitaly Y; Parks, II, James E

    2011-01-01

    We report the first in situ size-resolved density measurements of particles produced by premixed charge compression ignition (PCCI) and compare these with conventional diesel particles. The densities of size-classified particles were determined by measurements with a differential mobility analyzer (DMA) and an aerosol particle mass analyzer (APM). Particle masses of the different size classes were evaluated with a proposed DMA-APM response function for aggregates. Our results indicate that the effective densities of PCCI and conventional diesel particles were approximately the same for 50 and 100 nm electrical mobility diameters (0.9 and 0.6 g/cc, respectively), but the PCCI particle effective density (0.4 g/cc) was less than the conventional (0.5 g/cc) for 150 nm. The lowest effective particle densities were observed for exhaust gas recirculation (EGR) levels somewhat less than that required for PCCI operation. The inherent densities of conventional particles in the 50 and 100 nm size classes were 1.22 and 1.77 g/cc, which is in good agreement with Park et al. (2004). PCCI inherent particle densities for these same size classes were higher (1.27 and 2.10 g/cc), suggesting that there may have been additional adsorbed liquid hydrocarbons. For 150 nm particles, the inherent densities were nearly the same for PCCI and conventional particles at 2.20 g/cc. We expect that the lower effective density of PCCI particles may improve particulate emissions control with diesel particulate filters (DPFs). The presence of liquid hydrocarbons may also promote oxidation in DPFs.

  2. VALIDATION AND RESULTS OF A PSEUDO-MULTI-ZONE COMBUSTION TRAJECTORY PREDICTION MODEL FOR CAPTURING SOOT AND NOX FORMATION ON A MEDIUM DUTY DIESEL ENGINE

    SciTech Connect (OSTI)

    Bittle, Joshua A.; Gao, Zhiming; Jacobs, Timothy J.

    2013-01-01

    A pseudo-multi-zone phenomenological model has been created with the ultimate goal of supporting efforts to enable broader commercialization of low temperature combustion modes in diesel engines. The benefits of low temperature combustion are the simultaneous reduction in soot and nitric oxide emissions and increased engine efficiency if combustion is properly controlled. Determining what qualifies as low temperature combustion for any given engine can be difficult without expensive emissions analysis equipment. This determination can be made off-line using computer models or through factory calibration procedures. This process could potentially be simplified if a real-time prediction model could be implemented to run for any engine platform this is the motivation for this study. The major benefit of this model is the ability for it to predict the combustion trajectory, i.e. local temperature and equivalence ratio in the burning zones. The model successfully captures all the expected trends based on the experimental data and even highlights an opportunity for simply using the average reaction temperature and equivalence ratio as an indicator of emissions levels alone - without solving formation sub-models. This general type of modeling effort is not new, but a major effort was made to minimize the calculation duration to enable implementation as an input to real-time next-cycle engine controller Instead of simply using the predicted engine out soot and NOx levels, control decisions could be made based on the trajectory. This has the potential to save large amounts of calibration time because with minor tuning (the model has only one automatically determined constant) it is hoped that the control algorithm would be generally applicable.

  3. Clean Coal Diesel Demonstration Project

    SciTech Connect (OSTI)

    Robert Wilson

    2006-10-31

    A Clean Coal Diesel project was undertaken to demonstrate a new Clean Coal Technology that offers technical, economic and environmental advantages over conventional power generating methods. This innovative technology (developed to the prototype stage in an earlier DOE project completed in 1992) enables utilization of pre-processed clean coal fuel in large-bore, medium-speed, diesel engines. The diesel engines are conventional modern engines in many respects, except they are specially fitted with hardened parts to be compatible with the traces of abrasive ash in the coal-slurry fuel. Industrial and Municipal power generating applications in the 10 to 100 megawatt size range are the target applications. There are hundreds of such reciprocating engine power-plants operating throughout the world today on natural gas and/or heavy fuel oil.

  4. Heavy-Duty Truck Engine: 2007 Emissions with Excellent Fuel Economy

    Broader source: Energy.gov [DOE]

    2004 Diesel Engine Emissions Reduction (DEER) Conference Presentation: Cummins Inc. Heavy-Duty Truck Engine Program

  5. An Experimental Study of PM Emission Characteristics of Commercial Diesel

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

    Engine with Urea-SCR System | Department of Energy Study of PM Emission Characteristics of Commercial Diesel Engine with Urea-SCR System An Experimental Study of PM Emission Characteristics of Commercial Diesel Engine with Urea-SCR System Poster presentation at the 2007 Diesel Engine-Efficiency & Emissions Research Conference (DEER 2007). 13-16 August, 2007, Detroit, Michigan. Sponsored by the U.S. Department of Energy's (DOE) Office of FreedomCAR and Vehicle Technologies (OFCVT).

  6. DEVELOPMENT OF OTM SYNGAS PROCESS AND TESTING OF SYNGAS-DERIVED ULTRA-CLEAN FUELS IN DIESEL ENGINES AND FUEL CELLS

    SciTech Connect (OSTI)

    E.T. Robinson; James P. Meagher; Ravi Prasad

    2001-10-31

    This topical report summarizes work accomplished for the Program from January 1 through September 15, 2001 in the following task areas: Task 1--materials development; Task 2--composite element development; Task 3--tube fabrication; Task 4--reactor design and process optimization; Task 5--catalyst development; Task 6--P-1 operation; Task 8--fuels and engine testing; and Task 10--project management. OTM benchmark material, LCM1, exceeds the commercial oxygen flux target and was determined to be sufficiently robust to carry on process development activities. Work will continue on second-generation OTM materials that will satisfy commercial life targets. Three fabrication techniques for composite elements were determined to be technically feasible. These techniques will be studied and a lead manufacturing process for both small and large-scale elements will be selected in the next Budget Period. Experiments in six P-0 reactors, the long tube tester (LTT) and the P-1 pilot plant were conducted. Significant progress in process optimization was made through both the experimental program and modeling studies of alternate reactor designs and process configurations. Three tailored catalyst candidates for use in OTM process reactors were identified. Fuels for the International diesel engine and Nuvera fuel cell tests were ordered and delivered. Fuels testing and engine development work is now underway.

  7. The first of a series of high efficiency, high bmep, turbocharged two-stroke cycle diesel engines; the general motors EMD 645FB engine

    SciTech Connect (OSTI)

    Kotlin, J.J.; Dunteman, N.R.; Scott, D.I.; Williams, H.A. Jr.

    1983-01-01

    The current Electro-Motive Division 645 Series turbocharged engines are the Model FB and EC. The FB engine combines the highest thermal efficiency with the highest specific output of any EMD engine to date. The FB Series incorporates 16:1 compression ratio with a fire ring piston and an improved turbocharger design. Engine components included in the FB engine provide very high output levels with exceptional reliability. This paper also describes the performance of the lower rated Model EC engine series which feature high thermal efficiency and utilize many engine components well proven in service and basic to the Model FB Series.

  8. American Road: Clean Diesels for the Real World | Department of Energy

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

    American Road: Clean Diesels for the Real World American Road: Clean Diesels for the Real World Perspectives on clean diesels and public policy as it is developing in the US, as compared to EU deer08_mcmahon.pdf (934.03 KB) More Documents & Publications Opportunity Assessment Clean Diesels in the North American Light Duty Market Why Light Duty Diesels Make Sense in the North American Market BMW Diesel - Engine Concepts for Efficient Dynamics

  9. Business Case for Light-Duty Diesel in the U.S. | Department of Energy

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

    Diesel in the U.S. Business Case for Light-Duty Diesel in the U.S. 2005 Diesel Engine Emissions Reduction (DEER) Conference Presentations and Posters 2005_deer_mcmanus.pdf (119.95 KB) More Documents & Publications Cleaning Up Non-Road Diesel Vehicles: A Public Health Imperative Future Potential of Hybrid and Diesel Powertrains in the U.S. Light-Duty Vehicle Market Opportunity Assessment Clean Diesels in the North American Light Duty Market

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

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

    Low Temperature Combustion in a Light-Duty Diesel Engine Fuel Effects on Low Temperature Combustion in a Light-Duty Diesel Engine Six different fuels were investigated to study the ...

  11. Effect of Engine-Out NOx Control Strategies on PM Size Distribution in Heavy-Duty Diesel Engines Developed for 2010

    Broader source: Energy.gov [DOE]

    A distinct relationship was found between engine-out and SCR-out PM distributions for single-mode testing.

  12. The new Mercedes-Benz OM 904 LA light heavy-duty diesel engine for class 6 trucks

    SciTech Connect (OSTI)

    Schittler, M.; Bergmann, H.; Flathmann, K.

    1996-09-01

    As part of a comprehensive strategic product initiative the most important commercial vehicle manufacturer--Mercedes-Benz AG--is step by step renewing its entire product range. This primarily refers to the heart of the vehicles--the engine. After the OM 457 LA, which was developed together with DDC for the special American market demands and which is produced and sold in the US by DDC under the label Series 55, has had its premiere in Freightliner`s Century Class, the OM 904 LA will now follow in the light commercial vehicle class. This engine has a completely new concept of a direct-injection, highly sophisticated turbocharged four-cylinder in-line engine with air-to-air intercooler, whose main characteristics can be outlined by the terms multi-valve technology, high-pressure injection via unit pumps and electronic engine control. This small engine has several interesting features, which--up to now--were only known from class 8 engines. In addition to fulfilling increased customer demands with regard to long service life, easy maintenance, reliability and economy, great attention was paid during the design of the engine to not only fulfill the global regulations, but also account for sufficient potential to comply with further aggravations to be expected. The most important design features and the attained engine ratings are indicated and explained in detail.

  13. Emissions from Trucks using Fischer-Tropsch Diesel Fuel

    SciTech Connect (OSTI)

    Paul Norton; Keith Vertin; Brent Bailey; Nigel N. Clark; Donald W. Lyons; Stephen Goguen; James Eberhardt

    1998-10-19

    The Fischer-Tropsch (F-T) catalytic conversion process can be used to synthesize diesel fuels from a variety of feedstocks, including coal, natural gas and biomass. Synthetic diesel fuels can have very low sulfur and aromatic content, and excellent autoignition characteristics. Moreover, Fischer-Tropsch diesel fuels may also be economically competitive with California B- diesel fuel if produced in large volumes. overview of Fischer-Tropsch diesel fuel production and engine emissions testing is presented. Previous engine laboratory tests indicate that F-T diesel is a promising alternative fuel because it can be used in unmodified diesel engines, and substantial exhaust emissions reductions can be realized. The authors have performed preliminary tests to assess the real-world performance of F-T diesel fuels in heavy-duty trucks. Seven White-GMC Class 8 trucks equipped with Caterpillar 10.3 liter engines were tested using F-T diesel fuel. Vehicle emissions tests were performed using West Virginia University's unique transportable chassis dynamometer. The trucks were found to perform adequately on neat F-T diesel fuel. Compared to a California diesel fuel baseline, neat F-T diesel fuel emitted about 12% lower oxides of nitrogen (NOx) and 24% lower particulate matter over a five-mile driving cycle.

  14. DOE's Gasoline/Diesel PM Split Study | Department of Energy

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

    4 Diesel Engine Emissions Reduction (DEER) Conference Presentation: National Renewable Energy Laboratory 2004_deer_lawson.pdf (275.38 KB) More Documents & Publications DOE's Gasoline/Diesel PM Split Study DOE's Gasoline/Diesel PM Split Study Collaborative Lubricating Oil Study on Emissions (CLOSE) Project

  15. Ricardo's ACTION Strategy: An Enabling Light Duty Diesel Technology for the

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

    US Market | Department of Energy Ricardo's ACTION Strategy: An Enabling Light Duty Diesel Technology for the US Market Ricardo's ACTION Strategy: An Enabling Light Duty Diesel Technology for the US Market 2005 Diesel Engine Emissions Reduction (DEER) Conference Presentations and Posters 2005_deer_greaney.pdf (379.13 KB) More Documents & Publications Light-Duty Diesel EngineTechnology to Meet Future Emissions and Performance Requirements of the U.S. Market US Tier 2 Bin 2 Diesel Research

  16. Marketing Light-Duty Diesels to U.S. Consumers | Department of Energy

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

    Marketing Light-Duty Diesels to U.S. Consumers Marketing Light-Duty Diesels to U.S. Consumers Overview of Volkswagens approach in introducing light-duty diesels to the U.S. passenger vehicle market. deer08_krause.pdf (1.53 MB) More Documents & Publications Accelerating Light-Duty Diesel Sales in the U.S. Market The Diesel Engine Powering Light-Duty Vehicles: Today and Tomorrow Future Directions in Engines and Fuels

  17. Off-Highway Heavy Vehicle Diesel Efficiency Improvement and Emissions

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

    Reduction | Department of Energy Off-Highway Heavy Vehicle Diesel Efficiency Improvement and Emissions Reduction Off-Highway Heavy Vehicle Diesel Efficiency Improvement and Emissions Reduction 2005 Diesel Engine Emissions Reduction (DEER) Conference Presentations and Posters 2005_deer_rumsey.pdf (511.3 KB) More Documents & Publications High Engine Efficiency at 2010 Emissions Integrated Engine and Aftertreatment Technology Roadmap for EPA 2010 Heavy-duty Emissions Regulations

  18. Optical Diagnostics and Modeling Tools Applied to Diesel HCCI | Department

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

    of Energy Optical Diagnostics and Modeling Tools Applied to Diesel HCCI Optical Diagnostics and Modeling Tools Applied to Diesel HCCI 2002 DEER Conference Presentation: Caterpillar Engine Research 2002_deer_choi.pdf (954.08 KB) More Documents & Publications Computational Fluid Dynamics Modeling of Diesel Engine Combustion and Emissions Development of Enabling Technologies for High Efficiency, Low Emissions Homogeneous Charge Compression Ignition (HCCI) Engines 3-D Combustion Simulation

  19. Syngas Enhanced High Efficiency Low Temperature Combustion for Clean Diesel

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

    Engines | Department of Energy Enhanced High Efficiency Low Temperature Combustion for Clean Diesel Engines Syngas Enhanced High Efficiency Low Temperature Combustion for Clean Diesel Engines 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. p-10_hou.pdf (155.5 KB) More Documents & Publications Adaptive PCCI with Variable Orifice Injector for Low Cost High Efficiency

  20. Calibraton of a Directly Injected Natural Gas HD Engine for Class...

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

    This poster offers a comparison of high-pressure direct injection (HPDI) of natural gas engines with pilot diesel ignition with diesel engines used in heavy-duty diesel engine ...

  1. Rotating Liner Engine: Improving Efficiency of Heavy Duty Diesels by Significant Friction Reduction, and Extending the Life of Heavy Duty Engines.

    SciTech Connect (OSTI)

    Dardalis, Dimitrios

    2013-12-31

    This report describes the work on converting a 4 cylinder Cummins ISB engine into a single cylinder Rotating Liner Engine functioning prototype that can be used to measure the friction benefits of rotating the cylinder liner in a high pressure compression ignition engine. A similar baseline engine was also prepared, and preliminary testing was done. Even though the fabrication of the single cylinder prototype was behind schedule due to machine shop delays, the fundamental soundness of the design elements are proven, and the engine has successfully functioned. However, the testing approach of the two engines, as envisioned by the original proposal, proved impossible due to torsional vibration resonance caused by the single active piston. A new approach for proper testing has been proposed,

  2. Diesel Particulate Oxidation Model: Combined Effects of Fixed...

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

    Diesel Particulate Oxidation Model: Combined Effects of Fixed & Volatile Carbon Poster presented at the 16th Directions in Engine-Efficiency and Emissions Research (DEER) ...

  3. Partial-Flow Diesel Particulate Filter of Sintered Metal Fiber...

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

    Partial-Flow Diesel Particulate Filter of Sintered Metal Fiber Fleece Poster presented at the 16th Directions in Engine-Efficiency and Emissions Research (DEER) Conference in ...

  4. An Accelerated Aging Method for Diesel Exhaust Aftertreatment...

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

    An Accelerated Aging Method for Diesel Exhaust Aftertreatment Systems Poster presented at the 16th Directions in Engine-Efficiency and Emissions Research (DEER) Conference in ...

  5. Chemical and Physical Characteristics of Diesel Aerosol | Department...

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

    Mass Correlation of Engine Emissions with Spectral Instruments The Impact of Oil Consumption Mechanisms on Diesel Exhaust Particle Size Distributions and Detailed Exhaust Chemical ...

  6. Zone heated inlet ignited diesel particulate filter regeneration...

    Office of Scientific and Technical Information (OSTI)

    Data Explorer Search Results Zone heated inlet ignited diesel particulate filter ... An exhaust system that processes exhaust generated by an engine is provided. The system ...

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

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

    Ratio Particulate Produced from Advanced Combustion Operation in a Compression Ignition Engine Performance Characteristics of Coal-to-Liquids (CTL) Diesel in a 50-State ...

  8. Hydrogen Assisted Diesel Combustion in a Common Rail Turbodiesel...

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

    a Compression Ignition Engine Advanced Diesel Combustion with Low Hydrocarbon and Carbon Monoxide Emissions Impacts of Rail Pressure and Biodiesel Composition on Soot Nanostructure

  9. Comparison of Conventional Diesel and Reactivity Controlled Compressio...

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

    Diesel Engine Combustion Strategies High Efficiency Fuel Reactivity Controlled Compression Ignition Combustion Effect of Compression Ratio and Piston Geometry on RCCI load limit

  10. The Impact of Oil Consumption Mechanisms on Diesel Exhaust Particle...

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

    Mass Correlation of Engine Emissions with Spectral Instruments Lubricant Formulation and Consumption Effects on Diesel Exhaust Ash Emissions: Chemical and Physical Characteristics ...

  11. Reliability and Design Strength Limit Calculations on Diesel Particulate

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

    Filters | Department of Energy and Design Strength Limit Calculations on Diesel Particulate Filters Reliability and Design Strength Limit Calculations on Diesel Particulate Filters 2004 Diesel Engine Emissions Reduction (DEER) Confererence Presentation: Corning 2004_deer_webb.pdf (126.93 KB) More Documents & Publications Predicting Thermal Stress in Diesel Particulate Filters Environmental Effects on Power Electronic Devices Effect of Machining Procedures on the Strength of Ceramics for

  12. Development and Applications of Catalyzed Diesel Particulate Filter |

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

    Department of Energy Applications of Catalyzed Diesel Particulate Filter Development and Applications of Catalyzed Diesel Particulate Filter 2004 Diesel Engine Emissions Reduction (DEER) Conference Presentation: Sud Chemie Prototech Inc. 2004_deer_huang.pdf (171.31 KB) More Documents & Publications CARB Verification of Catalyzed Diesel Particulate Filters for Emergency Generator Sets A Revealing Look Inside Passive and Active DPF Regeneration: In-Situ Optical Analysis of Ash Formation

  13. Development of Acicular Mullite Materials for Diesel Particulate Filters

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

    Application | Department of Energy Acicular Mullite Materials for Diesel Particulate Filters Application Development of Acicular Mullite Materials for Diesel Particulate Filters Application 2005 Diesel Engine Emissions Reduction (DEER) Conference Presentations and Posters 2005_deer_pyzik.pdf (3.23 MB) More Documents & Publications Tailored Acicular Mullite Substrates for Multifunctional Diesel Particulate Filters Future Trends for DPFƒSCR On-Filter (SCRF) fundamental Modeling and

  14. Lubricant Formulation and Consumption Effects on Diesel Exhaust Ash

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

    Emissions: | Department of Energy Lubricant Formulation and Consumption Effects on Diesel Exhaust Ash Emissions: Lubricant Formulation and Consumption Effects on Diesel Exhaust Ash Emissions: 2005 Diesel Engine Emissions Reduction (DEER) Conference Presentations and Posters 2005_deer_plumley.pdf (398.5 KB) More Documents & Publications Detailed Characterization of Lubricant-Derived Ash-Related Species in Diesel Exhaust and Aftertreatment Systems Unraveling DPF Degradation using Chemical

  15. Alloy Foam Diesel Emissions Control School Bus Implementation | Department

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

    of Energy Alloy Foam Diesel Emissions Control School Bus Implementation Alloy Foam Diesel Emissions Control School Bus Implementation Poster presentation from the 2007 Diesel Engine-Efficiency & Emissions Research Conference (DEER 2007). 13-16 August, 2007, Detroit, Michigan. Sponsored by the U.S. Department of Energy's (DOE) Office of FreedomCAR and Vehicle Technologies (OFCVT). deer07_han.pdf (407.66 KB) More Documents & Publications Diesel Injection Shear-Stress Advanced Nozzle

  16. CARB Verification of Catalyzed Diesel Particulate Filters for Emergency

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

    Generator Sets | Department of Energy CARB Verification of Catalyzed Diesel Particulate Filters for Emergency Generator Sets CARB Verification of Catalyzed Diesel Particulate Filters for Emergency Generator Sets 2005 Diesel Engine Emissions Reduction (DEER) Conference Presentations and Posters 2005_deer_huang.pdf (272.67 KB) More Documents & Publications Development and Applications of Catalyzed Diesel Particulate Filter California ARB Verification Testing of the CBSTM Soot Filter for

  17. Influence of fuel variables on the operation of automotive open and pre-chamber diesel and spark ignited stratified charge engines: a literature study covering petroleum and syncrude derived fuels, executive summary

    SciTech Connect (OSTI)

    Needham, J.R.

    1980-09-01

    A literature study was carried out to ascertain the influence of fuels and fuel variables on the operation of automotive diesel and spark ignited stratified charge engines with a view to understanding the impact of future fuels derived from syncrude. The findings from the search were presented and discussed in detail in the main report (Ricardo DP.81/539). In this executive summary, the conclusions and recommendations from the main report are presented.

  18. Development of microwave-heated diesel particulate filters

    SciTech Connect (OSTI)

    Janney, M.A.; Stinton, D.P.; Yonushonis, T.M.; McDonald, A.C.; Wiczynski, P.D.; Haberkamp, W.C.

    1996-06-01

    Diesel engines are a prime mover of freight in the United States. Because of legislated reductions in diesel engine emissions, considerable research has been focused on the reduction of these emissions while maintaining the durability, reliability, and fuel economy of diesel engines. The Environmental Protection Agency (EPA) has found that particulate exhaust from diesel powered vehicles represents a potential health hazard. As a result, regulations have been promulgated limiting the allowable amounts of particulate from those vehicles. The 0.1 g/bhp/hr (gram per brake horsepower per hour) particulate standard that applies to heavy-duty diesels became effective in 1994. Engine manufacturers have met those requirements with engine modifications and/or oxidation catalysts. EPA has established more stringent standards for diesel-powered urban buses because of health concerns in densely populated urban areas.

  19. Current Understanding of Cu-Exchanged Chabazite Molecular Sieves for Use as Commercial Diesel Engine DeNOx Catalysts

    SciTech Connect (OSTI)

    Gao, Feng; Kwak, Ja Hun; Szanyi, Janos; Peden, Charles HF

    2013-11-03

    Selective catalytic reduction (SCR) of NOx with ammonia using metal-exchanged molecular sieves with a chabazite (CHA) structure has recently been commercialized on diesel vehicles. One of the commercialized catalysts, i.e., Cu-SSZ-13, has received much attention for both practical and fundamental studies. For the latter, the particularly well-defined structure of this zeolite is allowing long-standing issues of the catalytically active site for SCR in metal-exchanged zeolites to be addressed. In this review, recent progress is summarized with a focus on two areas. First, the technical significance of Cu-SSZ-13 as compared to other Cu-ion exchanged zeolites (e.g., Cu-ZSM-5 and Cu-beta) is highlighted. Specifically, the much enhanced hydrothermal stability for Cu-SSZ-13 compared to other zeolite catalysts is addressed via performance measurements and catalyst characterization using several techniques. The enhanced stability of Cu-SSZ-13 is rationalized in terms of the unique small pore structure of this zeolite catalyst. Second, the fundamentals of the catalytically active center; i.e., the chemical nature and locations within the SSZ-13 framework are presented with an emphasis on understanding structure-function relationships. For the SCR reaction, traditional kinetic studies are complicated by intra-particle diffusion limitations. However, a major side reaction, nonselective ammonia oxidation by oxygen, does not suffer from mass-transfer limitations at relatively low temperatures due to significantly lower reaction rates. This allows structure-function relationships that are rather well understood in terms of Cu ion locations and redox properties. Finally, some aspects of the SCR reaction mechanism are addressed on the basis of in-situ spectroscopic studies.

  20. Recent Developments in BMW's Diesel Technology

    SciTech Connect (OSTI)

    Steinparzer, F

    2003-08-24

    The image of BMW is very strongly associated to high power, sports biased, luxury cars in the premium car segment, however, particularly in the United States and some parts of Asia, the combination of a car in this segment with a diesel engine was up until now almost unthinkable. I feel sure that many people in the USA are not even aware that BMW produces diesel-powered cars. In Europe there is a completely contrary situation which, driven by the relative high fuel price, and the noticeable difference between gasoline and diesel prices, there has been a continuous growth in the diesel market since the early eighties. During this time BMW has accumulated more then 20 years experience in developing and producing powerful diesel engines for sports and luxury cars. BMW started the production of its 1st generation diesel engine in 1983 with a 2,4 l, turbocharged IDI engine in the 5 series model range. With a specific power of 35 kW/l, this was the most powerful diesel engine on the market at this time. In 1991 BMW introduced the 2nd generation diesel engine, beginning with a 2,5 l inline six, followed in 1994 by a 1,7 l inline four. All engines of this 2nd BMW diesel engine family were turbocharged and utilized an indirect injection combustion system. With the availability of high-pressure injection systems such as the common rail system, BMW developed its 3rd diesel engine family which consists of four different engines. The first was the 4-cylinder for the 3 series car in the spring of 1998, followed by the 6-cylinder in the fall of 1998 and then in mid 1999 by the worlds first V8 passenger car diesel with direct injection. Beginning in the fall of 2001 with the 4-cylinder, BMW reworked this DI engine family fundamentally. Key elements are an improved core engine design, the use of the common rail system of the 2nd generation and a new engine control unit with even better performance. Step by step, these technological improvements were introduce d to production for

  1. Fuel and Fuel Additive Registration Testing of Ethanol-Diesel Blend for O2Diesel, Inc.

    SciTech Connect (OSTI)

    Fanick, E. R.

    2004-02-01

    O2 Diesel Inc. (formerly AAE Technologies Inc.) tested a heavy duty engine with O2Diesel (diesel fuel with 7.7% ethanol and additives) for regulated emissions and speciation of vapor-phase and semi-volatile hydrocarbon compounds. This testing was performed in support of EPA requirements for registering designated fuels and fuel additives as stipulated by sections 211(b) and 211(e) of the Clean Air Act.

  2. Advanced Technology Light Duty Diesel Aftertreatment System ...

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

    Passive Catalytic Approach to Low Temperature NOx Emission Abatement Cummins' Next Generation Tier 2, Bin 2 Light Truck Diesel Engine ATP-LD; Cummins Next Generation Tier 2 Bin 2 ...

  3. Preserving Diesel Exhaust Ultrafine (Nano-) Particulate Structure...

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

    Poster presentation at the 2007 Diesel Engine-Efficiency & Emissions Research Conference (DEER 2007). 13-16 August, 2007, Detroit, Michigan. Sponsored by the U.S. Department of ...

  4. Clean Diesels, an Economy or Performance Option?

    Broader source: Energy.gov [DOE]

    Presentation given at the 2007 Diesel Engine-Efficiency & Emissions Research Conference (DEER 2007). 13-16 August, 2007, Detroit, Michigan. Sponsored by the U.S. Department of Energy's (DOE) Office of FreedomCAR and Vehicle Technologies (OFCVT).

  5. Accelerated Extraction of Diesel Particulate Matter SOF

    Broader source: Energy.gov [DOE]

    Poster presentation at the 2007 Diesel Engine-Efficiency & Emissions Research Conference (DEER 2007). 13-16 August, 2007, Detroit, Michigan. Sponsored by the U.S. Department of Energy's (DOE) Office of FreedomCAR and Vehicle Technologies (OFCVT).

  6. Advanced Technology Light Duty Diesel Aftertreatment System

    Broader source: Energy.gov [DOE]

    Light duty diesel aftertreatment system consisting of a DOC and selective catalytic reduction catalyst on filter (SCRF), close coupled to the engine with direct gaseous ammonia delivery is designed to reduce cold start NOx and HC emissions

  7. 08FFL-0020Influence of High Fuel Rail Pressure and Urea Selective Catalytic Reduction on PM Formation in an Off-Highway Heavy-Duty Diesel Engine

    SciTech Connect (OSTI)

    Kass, Michael D; Domingo, Norberto; Storey, John Morse; Lewis Sr, Samuel Arthur

    2008-01-01

    The influence of fuel rail pressure (FRP) and urea-selective catalytic reduction (SCR) on particulate matter (PM) formation is investigated in this paper along with notes regarding the NOx and other emissions. Increasing FRP was shown to reduce the overall soot and total PM mass for four operating conditions. These conditions included two high speed conditions (2400 rpm at 540 and 270 Nm of torque) and two moderated speed conditions (1400 rpm at 488 and 325 Nm). The concentrations of CO2 and NOx increased with fuel rail pressure and this is attributed to improved fuel-air mixing. Interestingly, the level of unburned hydrocarbons remained constant (or increased slightly) with increased FRP. PM concentration was measured using an AVL smoke meter and scanning mobility particle sizer (SMPS); and total PM was collected using standard gravimetric techniques. These results showed that the smoke number and particulate concentrations decrease with increasing FRP. However the decrease becomes more gradual as very high rail pressures. Additionally, the total PM decreased with increasing FRP; however, the soluble organic fraction (SOF) reaches a maximum after which it declines with higher rail pressure. The total PM was collected for the two 1400 rpm conditions downstream of the engine, diesel oxidation catalyst, and a urea-SCR catalyst. The results show that significant PM reduction occurs in the SCR catalyst even during high rates of urea dosage. Analysis of the PM indicates that residual SOF is burned up in the SCR catalyst.

  8. Relationship Between Composition and Toxicity of Engine Emissions

    Broader source: Energy.gov [DOE]

    2004 Diesel Engine Emissions Reduction (DEER) Conference Presentation: Lovelace Respiratory Research Instiitute

  9. Performance and Emissions Characteristics of Bio-Diesel (B100)-Ignited Methane and Propane Combustion in a Four Cylinder Turbocharged Compression Ignition Engine

    SciTech Connect (OSTI)

    Shoemaker, N. T.; Gibson, C. M.; Polk, A. C.; Krishnan, S. R.; Srinivasan, K. K.

    2011-10-05

    Different combustion strategies and fuel sources are needed to deal with increasing fuel efficiency demands and emission restrictions. One possible strategy is dual fueling using readily available resources. Propane and natural gas are readily available with the current infrastructure and biodiesel is growing in popularity as a renewable fuel. This paper presents experimental results from dual fuel combustion of methane (as a surrogate for natural gas) and propane as primary fuels with biodiesel pilots in a 1.9 liter, turbocharged, 4 cylinder diesel engine at 1800 rev/min. Experiments were performed with different percentage energy substitutions (PES) of propane and methane and at different brake mean effective pressures (BMEP/bmep). Brake thermal efficiency (BTE) and emissions (NOx, HC, CO, CO2, O2 and smoke) were also measured. Maximum PES levels for B100-methane dual fuelling were limited to 70% at 2.5 bar bmep and 48% at 10 bar bmep, and corresponding values for B100-propane dual fuelling were 64% and 43%, respectively. Maximum PES was limited by misfire at 2.5 bar bmep and the onset of engine knock at 10 bar bmep. Dual fuel BTEs approached straight B100 values at 10 bar bmep while they were significantly lower than B100 values at 2.5 bar bmep. In general dual fuelling was beneficial in reducing NOx and smoke emissions by 33% and 50%, respectively from baseline B100 levels; however, both CO and THC emissions were significantly higher than baseline B100 levels at all PES and loads.

  10. Performance and Emissions Characteristics of Bio-Diesel (B100)-Ignited Methane and Propane Combustion in a Four Cylinder Turbocharged Compression Ignition Engine

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Shoemaker, N. T.; Gibson, C. M.; Polk, A. C.; Krishnan, S. R.; Srinivasan, K. K.

    2011-10-05

    Different combustion strategies and fuel sources are needed to deal with increasing fuel efficiency demands and emission restrictions. One possible strategy is dual fueling using readily available resources. Propane and natural gas are readily available with the current infrastructure and biodiesel is growing in popularity as a renewable fuel. This paper presents experimental results from dual fuel combustion of methane (as a surrogate for natural gas) and propane as primary fuels with biodiesel pilots in a 1.9 liter, turbocharged, 4 cylinder diesel engine at 1800 rev/min. Experiments were performed with different percentage energy substitutions (PES) of propane and methane andmore » at different brake mean effective pressures (BMEP/bmep). Brake thermal efficiency (BTE) and emissions (NOx, HC, CO, CO2, O2 and smoke) were also measured. Maximum PES levels for B100-methane dual fuelling were limited to 70% at 2.5 bar bmep and 48% at 10 bar bmep, and corresponding values for B100-propane dual fuelling were 64% and 43%, respectively. Maximum PES was limited by misfire at 2.5 bar bmep and the onset of engine knock at 10 bar bmep. Dual fuel BTEs approached straight B100 values at 10 bar bmep while they were significantly lower than B100 values at 2.5 bar bmep. In general dual fuelling was beneficial in reducing NOx and smoke emissions by 33% and 50%, respectively from baseline B100 levels; however, both CO and THC emissions were significantly higher than baseline B100 levels at all PES and loads.« less

  11. Ignition assist systems for direct-injected, diesel cycle, medium-duty alternative fuel engines: Final report phase 1

    SciTech Connect (OSTI)

    Chan, A.K.

    2000-02-23

    This report is a summary of the results of Phase 1 of this contract. The objective was to evaluate the potential of assist technologies for direct-injected alternative fuel engines vs. glow plug ignition assist. The goal was to demonstrate the feasibility of an ignition system life of 10,000 hours and a system cost of less than 50% of the glow plug system, while meeting or exceeding the engine thermal efficiency obtained with the glow plug system. There were three tasks in Phase 1. Under Task 1, a comprehensive review of feasible ignition options for DING engines was completed. The most promising options are: (1) AC and the ''SmartFire'' spark, which are both long-duration, low-power (LDLP) spark systems; (2) the short-duration, high-power (SDHP) spark system; (3) the micropilot injection ignition; and (4) the stratified charge plasma ignition. Efforts concentrated on investigating the AC spark, SmartFire spark, and short-duration/high-power spark systems. Using proprietary pricing information, the authors predicted that the commercial costs for the AC spark, the short-duration/high-power spark and SmartFire spark systems will be comparable (if not less) to the glow plug system. Task 2 involved designing and performing bench tests to determine the criteria for the ignition system and the prototype spark plug for Task 3. The two most important design criteria are the high voltage output requirement of the ignition system and the minimum electrical insulation requirement for the spark plug. Under Task 3, all the necessary hardware for the one-cylinder engine test was designed. The hardware includes modified 3126 cylinder heads, specially designed prototype spark plugs, ignition system electronics, and parts for the system installation. Two 3126 cylinder heads and the SmartFire ignition system were procured, and testing will begin in Phase 2 of this subcontract.

  12. Development on simultaneous reduction system of NOx and PM from a diesel

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

    engine | Department of Energy on simultaneous reduction system of NOx and PM from a diesel engine Development on simultaneous reduction system of NOx and PM from a diesel engine 2003 DEER Converence Presentation: Toyota Motor Corporation 2003_deer_watanabe.pdf (1.07 MB) More Documents & Publications An Improvement of Diesel PM and NOx Reduction System An Improvement of Diesel PM and NOx Reduction System EPA Mobile Source Rule Update

  13. Diesel DeNOx Catalyst - Energy Innovation Portal

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

    Vehicles and Fuels Vehicles and Fuels Industrial Technologies Industrial Technologies Advanced Materials Advanced Materials Find More Like This Return to Search Diesel DeNOx Catalyst New Argonne-Developed Catalyst Can Reduce NOx Emissions From Diesel Engines by 80-85% Argonne National Laboratory Contact ANL About This Technology Inventor Chris Marshall shows the new catalyst that could help remove nitrogen oxides from diesel engine exhaust while saving energy. Inventor Chris Marshall shows the

  14. Performance of the Low-Efficiency Diesel Particulate Filter for Diesel PM

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

    Reduction | Department of Energy the Low-Efficiency Diesel Particulate Filter for Diesel PM Reduction Performance of the Low-Efficiency Diesel Particulate Filter for Diesel PM Reduction Poster presented at the 16th Directions in Engine-Efficiency and Emissions Research (DEER) Conference in Detroit, MI, September 27-30, 2010. p-15_wei.pdf (220.05 KB) More Documents & Publications On-Road PM Mass Emission Measured with OBS-TRPM Investigation of Direct Injection Vehicle Particulate Matter

  15. Fluidized-bed combustion 1000-hour test program. Volume IV. Engineering details and post-test inspections

    SciTech Connect (OSTI)

    Roberts, A. G.; Barker, S. N.; Phillips, R. N.; Pillai, K. K.; Raven, P.; Wood, P.

    1981-09-01

    Volume IV of the report on the 1000 hour programme consists of three appendices giving details of the enginmering/construction aspects of the plant and reports from Stal-Laval Turbin A.B. Appendix N has been entered individually. (LTN)

  16. Investigation of Surface Treatments to Improve the Friction and Wear of Titanium Alloys for Diesel Engine Components

    SciTech Connect (OSTI)

    Blau, Peter J.; Cooley, Kevin M.; Kirkham, Melanie J.; Bansal, Dinesh G.

    2012-09-20

    This final report summarizes experimental and analytical work performed under an agreement between the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, Office of Transportation Technologies, and UT-Battelle LLC. The project was directed by Jerry Gibbs, of the U.S. Department of Energy’s Propulsion Materials Program, with management by D. P. Stinton and J. A. Haynes of ORNL. Participants included Peter J. Blau (Principal Investigator), Kevin M. Cooley (senior technician), Melanie J. Kirkham (materials scientist) of the Materials Science and Technology Division or ORNL, and Dinesh G. Bansal, a post doctoral fellow employed by Oak Ridge Associated Universities (ORAU) and who, at the time of this writing, is an engineer with Cummins, Inc. This report covers a three-year effort that involved two stages. In the first stage, and after a review of the literature and discussions with surface treatment experts, a series of candidate alloys and surface treatments for titanium alloy (Ti-6Al-4V) was selected for initial screening. After pre-screening using an ASTM standard test method, the more promising surface treatments were tested in Phase 2 using a variable loading apparatus that was designed and built to simulate the changing load patterns in a typical connecting rod bearing. Information on load profiles from the literature was supplemented with the help of T.C. Chen and Howard Savage of Cummins, Inc. Considering the dynamic and evolving nature of materials technology, this report presents a snapshot of commercial and experimental bearing surface technologies for titanium alloys that were available during the period of this work. Undoubtedly, further improvements in surface engineering methods for titanium will evolve.

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

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

    Advanced Reciprocating Engine System (ARES) Advanced Natural Gas Reciprocating Engines (ARES) - Presentation by Dresser Waukesha, June 2011 Integration of Diesel Engine Technology ...

  18. Real-Time Measurement of Diesel Trap Efficiency | Department of Energy

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

    Measurement of Diesel Trap Efficiency Real-Time Measurement of Diesel Trap Efficiency 2005 Diesel Engine Emissions Reduction (DEER) Conference Presentations and Posters 2005_deer_niemela.pdf (555.43 KB) More Documents & Publications Update on 2007 Diesel Particulate Measurement Research 2007 Diesel Particulate Measurement Research (E-66 Project) Evaluation of the European PMP Methodologies Using Chassis Dynamometer and On-road Testing of Heavy-duty Vehicles

  19. Optimization of an Advanced Passive/Active Diesel Emission Control System |

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

    Department of Energy an Advanced Passive/Active Diesel Emission Control System Optimization of an Advanced Passive/Active Diesel Emission Control System Evaluation of PM exhaust aftertreatment technologies of a non-road engine over a steady-state cycle deer08_shade.pdf (1.28 MB) More Documents & Publications Diesel Particulate Filters and NO2 Emission Limits Active Diesel Emission Control Technology for Transport Refrigeration Units Active Diesel Emission Control

  20. Impact of Clean Diesel Technology on Climate Change | Department of Energy

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

    Clean Diesel Technology on Climate Change Impact of Clean Diesel Technology on Climate Change 2004 Diesel Engine Emissions Reduction (DEER) Conference Presentation: Brookhaven National Laboratory 2004_deer_mcgraw.pdf (601.29 KB) More Documents & Publications Nanoparticle Emissions from Internal Combustion Engines Microsoft PowerPoint - 4. ORNL- deer.ppt [Read-Only] Approaches to Safe Nanotechnology