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Keywords: combustion
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Proceedings Papers

Proc. ASME. ICEF2023, ASME 2023 ICE Forward Conference, V001T03A001, October 8–11, 2023
Publisher: American Society of Mechanical Engineers
Paper No: ICEF2023-109103
...Proceedings of the ASME 2023 ICE Forward Conference ICEF2023 October 8-11, 2023, Pittsburgh, Pennsylvania ICEF2023-109103 EFFECTS OF HYDROGEN ON COMBUSTION IN AMMONIA DIESEL DUAL FUEL ENGINE AND DEMONSTRATION OF AUTOTHERMAL CATALYST TO REFORM AMMONIA INTO HYDROGEN Yoichi Niki National Maritime...
Proceedings Papers

Proc. ASME. ICEF2023, ASME 2023 ICE Forward Conference, V001T02A002, October 8–11, 2023
Publisher: American Society of Mechanical Engineers
Paper No: ICEF2023-109548
... become a desirable replacement for the internal combustion engines (ICE) with its zero tailpipe emissions but poses practical problems when considering high-power density, long operating period applications like Class-8 trucks and heavy-duty off-road vehicles. A promising approach to reduce emissions...
Proceedings Papers

Proc. ASME. ICEF2023, ASME 2023 ICE Forward Conference, V001T01A008, October 8–11, 2023
Publisher: American Society of Mechanical Engineers
Paper No: ICEF2023-110164
... like rail, marine, and aviation as candidates for sustainable low carbon fuels. Along with diesel or biodiesel, hydrogen or natural gas can be burned in a dual-fuel setup. In this paper, numerical simulations of natural gas and diesel dual-fuel combustion in a large-bore rail engine are discussed...
Proceedings Papers

Proc. ASME. ICEF2022, ASME 2022 ICE Forward Conference, V001T02A003, October 16–19, 2022
Publisher: American Society of Mechanical Engineers
Paper No: ICEF2022-89084
... Abstract Exhaust gas recirculation (EGR) is a common state of the art technology to reduce NO x emissions in internal combustion engines. Owing to the exponential dependency of NO x formation on temperature, the effect of EGR is to increase combustion duration and thus, to reduce the peak...
Proceedings Papers

Proc. ASME. ICEF2022, ASME 2022 ICE Forward Conference, V001T06A006, October 16–19, 2022
Publisher: American Society of Mechanical Engineers
Paper No: ICEF2022-90293
... Abstract Diesel engines are one of the most commonly used combustion systems for heavy-duty applications like locomotives. Although computational fluid dynamics (CFD) modeling of diesel engines is a mature research topic, CFD modeling of large-bore engines like those used in locomotives has...
Proceedings Papers

Proc. ASME. ICEF2022, ASME 2022 ICE Forward Conference, V001T04A002, October 16–19, 2022
Publisher: American Society of Mechanical Engineers
Paper No: ICEF2022-88806
...-ignition engines have induced this activation by using late spark timings so that the end of combustion occurs close to the exhaust valve opening. However, this has a negative impact on engine thermal and combustion efficiencies (and therefore carbon dioxide emissions). In this paper, the impact of warm-up...
Proceedings Papers

Proc. ASME. ICEF2022, ASME 2022 ICE Forward Conference, V001T06A011, October 16–19, 2022
Publisher: American Society of Mechanical Engineers
Paper No: ICEF2022-91185
... Abstract Ammonia and Hydrogen are attractive alternative fuels for a zero-carbon combustion solution that can rapidly decarbonize the transportation industry. Understanding the chemical behavior and combustion characteristics of these fuels individually, as well as blended together, is pivotal...
Proceedings Papers

Proc. ASME. ICEF2021, ASME 2021 Internal Combustion Engine Division Fall Technical Conference, V001T06A012, October 13–15, 2021
Publisher: American Society of Mechanical Engineers
Paper No: ICEF2021-68226
... Abstract In SI engines, the initial stages of flame kernel formation play an important role in determining the overall thermal efficiency and in reducing the cycle-to-cycle variability. Introducing a cross-flow within the spark gap has shown to reduce the combustion fluctuations by shortening...
Proceedings Papers

Proc. ASME. ICEF2020, ASME 2020 Internal Combustion Engine Division Fall Technical Conference, V001T06A006, November 4–6, 2020
Publisher: American Society of Mechanical Engineers
Paper No: ICEF2020-2934
... Abstract Combustion and emission performance of internal combustion (IC) engines depend on the ability of the ignition system to provide an ignition kernel that can successfully transition into an early flame kernel. Several key physical phenomena such as flow physics, plasma dynamics, circuit...
Proceedings Papers

Proc. ASME. ICEF2019, ASME 2019 Internal Combustion Engine Division Fall Technical Conference, V001T06A001, October 20–23, 2019
Publisher: American Society of Mechanical Engineers
Paper No: ICEF2019-7128
... Abstract The use of 3-D CFD combustion models based on tabulated chemistry is becoming increasingly popular. Especially the runtime benefit is attractive, as the tabulated chemistry method allows including state-of-the-art chemical reaction schemes in CFD simulations without significant...
Proceedings Papers

Proc. ASME. ICEF2013, Volume 2: Fuels; Numerical Simulation; Engine Design, Lubrication, and Applications, V002T07A011, October 13–16, 2013
Publisher: American Society of Mechanical Engineers
Paper No: ICEF2013-19183
... 1 Copyright © 2013 by ASME THE EFFECT OF SPARK PLUG ELECTRODE GEOMETRY ON COMBUSTION RATES IN A HIGH PERFORMANCE AUTOMOTIVE ENGINE Jeremy J. Worm Michigan Technological University Mechanical Engineering Engineering Mechanics 1400 Townsend Dr. Houghton, Michigan 49931 USA PH: 906-487-2686 jjworm...
Proceedings Papers

Proc. ASME. ICEF2012, ASME 2012 Internal Combustion Engine Division Fall Technical Conference, 781-791, September 23–26, 2012
Publisher: American Society of Mechanical Engineers
Paper No: ICEF2012-92133
... Dual fuel engines offer the potential for considerable reductions in emissions of carbon dioxide (CO 2 ), as well as reducing emissions of particulate matter (PM). However, the combustion processes occurring inside a dual fuel engine are complex. This is due to the ignition of a homogeneous lean...
Proceedings Papers

Proc. ASME. ICEF2010, ASME 2010 Internal Combustion Engine Division Fall Technical Conference, 319-328, September 12–15, 2010
Publisher: American Society of Mechanical Engineers
Paper No: ICEF2010-35043
... 14 01 2011 The goal of this study is to find out effects of the injection parameters on the combustion process for a single cylinder of a nine-liter six cylinder diesel engine. Partially premixed compression ignition (PPCI) cases are compared for improvements on the combustion chamber...
Proceedings Papers

Proc. ASME. ICEF2007, ASME 2007 Internal Combustion Engine Division Fall Technical Conference, 233-242, October 14–17, 2007
Publisher: American Society of Mechanical Engineers
Paper No: ICEF2007-1701
...Proceedings of the ASME Internal Combustion Engine Division Fall Technical Conference ICEF2007 October 14-17, Charleston, South Carolina, USA E V. f A I 4 3 m the transitions are discussed. Observed cool-flame separation behavior is Keywords INTRODU T powered v and 9% of than gasoli ratios...
Proceedings Papers

Proc. ASME. ICEF2004, ASME 2004 Internal Combustion Engine Division Fall Technical Conference, 703-711, October 24–27, 2004
Publisher: American Society of Mechanical Engineers
Paper No: ICEF2004-0853
... 18 12 2008 ignition system combustion electrostatic radio frequency emissions Recently, industry and government have joined together to develop high efficiency, low emissions, natural gas fueled, industrial, reciprocating engines for power generation. The California Energy...
Proceedings Papers

Proc. ASME. ICEF2004, ASME 2004 Internal Combustion Engine Division Fall Technical Conference, 11-17, October 24–27, 2004
Publisher: American Society of Mechanical Engineers
Paper No: ICEF2004-0833
... 18 12 2008 Due to the progresses in exhaust emission after-treatment systems and in the development of new combustion processes, the S.I. engine has been booming in the past few years. But the efficiency will have to be improved in the future. Because of its thermodynamic benefits...
Proceedings Papers

Proc. ASME. ICEF2004, ASME 2004 Internal Combustion Engine Division Fall Technical Conference, 509-524, October 24–27, 2004
Publisher: American Society of Mechanical Engineers
Paper No: ICEF2004-0831
... 18 12 2008 Large-scale flows in internal combustion engines directly affect combustion duration and emissions production. The effect of intake port geometry on combustion performance was studied in a four-stroke spark-ignition utility engine. Three intake port geometries were...
Proceedings Papers

Proc. ASME. ICEF2005, ASME 2005 Internal Combustion Engine Division Fall Technical Conference (ICEF2005), 405-413, September 11–14, 2005
Publisher: American Society of Mechanical Engineers
Paper No: ICEF2005-1307
... 19 11 2008 CFD Modeling of the injection, the mixing, the combustion and the emission formation processes in a high pressure direct injection (HPDI) natural gas engine is presented in this paper. KIVA3V was used together with an injector model. Two sub-models had been developed...
Proceedings Papers

Proc. ASME. ICEF2005, ASME 2005 Internal Combustion Engine Division Fall Technical Conference (ICEF2005), 111-123, September 11–14, 2005
Publisher: American Society of Mechanical Engineers
Paper No: ICEF2005-1326
... of chemical and physical characteristics of F-T fuels have been attributed to the observed reduction in emissions, the actual effects of both the fuel properties and in-cylinder combustion characteristics in modern diesel engines are still not well understood. In this study a 2002, six-cylinder, 5.9 liter...
Proceedings Papers

Proc. ASME. ICEF2005, ASME 2005 Internal Combustion Engine Division Fall Technical Conference (ICEF2005), 283-293, September 11–14, 2005
Publisher: American Society of Mechanical Engineers
Paper No: ICEF2005-1245
... 19 11 2008 Homogeneous Charge Compression Ignition (HCCI) combustion is currently limited in application due to several key issues such as a narrow operating range, high hydrocarbon and carbon monoxide emissions and lack of control over the onset of combustion. Exhaust gas recycling...