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Evaluation of the Potential of a Low-Heat-Rejection Diesel Engine to Meet Future EPA Heavy-Duty Emission Standards
ISSN: 0148-7191, e-ISSN: 2688-3627
Published February 01, 1989 by SAE International in United States
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The potential for Low-Heat-Rejection (LHR) engines to meet current and future emission standards is a critical consideration. For the most part, NOx emissions measured both at GMR and elsewhere have been significantly higher than for conventional diesel engines, and many of the control methods for NOx increase fuel consumption. In recent studies at General Motors Research Laboratories (GMR), the LHR engine has shown potential for significant reductions in smoke and particulate emissions. In this study, data acquired from a single-cylinder LHR engine having a 2.0-L displacement and a quiescent combustion system were combined with multicylinder engine mapping data for a 1988 production truck engine to form a simulated multicylinder LHR truck engine with turbo-charging and intercooling. These data were used as input to a simulation model of the EPA heavy-duty transient test schedule to estimate LHR engine emissions and fuel consumption.
Initial simulation results indicated that the LHR engine would have NOx emission levels more than three times that required to meet future NOx emission standards, but with particulate emission levels below any existing future emission standard. To reduce NOx emissions, injection timing retard was considered as the most practical approach for a heavy-duty engine. For the LHR engine to reach the 1991-94 NOx heavy-duty emission standard of 5.0 g/bhp-h, static injection timings of around top dead center were required. With such timing, fuel consumption of the base LHR engine increased by more than 20% relative to the best-efficiency timing of the engine, and particulates rose to levels considerably higher than required to meet 1994 heavy-duty emission standards.
CitationSiegla, D. and Alkidas, A., "Evaluation of the Potential of a Low-Heat-Rejection Diesel Engine to Meet Future EPA Heavy-Duty Emission Standards," SAE Technical Paper 890291, 1989, https://doi.org/10.4271/890291.
- Bryzik W. and Kamo R., “TACOM/Cummins Adiabatic Engine Program,” SAE Transactions, Vol. 92, pp. 1.1063-1.1087, 1983.
- Yoshimitsu R., Toyama K., Sato F. and Yamaguchi H., “Capabilities of Heat Insulated Diesel Engine,” SAE Paper 820431, 1982.
- Wade W. R., Havstad P. H., Ounsted E. J., Trinkier F. H. and Garwin I. J., “Fuel Economy Opportunities with Uncooled DI Diesel Engine,” Instn. Mech. Engrs. Paper C432/84, Fuel Efficient Power Trains and Vehicles, pp. 59-72, 1984.
- Siegla D. C. and Amann C. A., “Exploratory Study of the Low-Heat-Rejection Diesel for Passenger-Car Application,” SAE Transactions, Vol. 93, pp. 259-283, 1984.
- Alkidas A. C., “Experiments with an Uncooled Single-Cylinder Open-Chamber Diesel,” SAE Paper 870020, in Adiabatic Engines and Systems, SP-700, pp. 19-29, 1987.
- Alkidas A. C., “On the Performance and Emissions of an Uncooled Heavy-Duty Single-Cylinder Diesel Engine,” SAE Paper 880013, in Recent Developments in the Adiabatic Engine, SP-738, pp. 11-24, 1988.
- Gatowski J. A., Jones J. D. and Siegla D. C., “Evaluation of the Fuel Economy Potential of the Low-Heat-Rejection Diesel Engine for Passenger Car Application,” SAE Paper 870024, 1987.
- Amann C. A., “The Law-Heat-Rejection Diesel,” Chapter 5, Advanced Diesel Engineering and Operations (Haddad S. D., ed.), Ellis Horwood - John Wiley, New York, 1988, pp. 173-239.
- Myers P. S., Chairman, et al., “A Review of the State of the Art and Projected Technology of Low Heat Rejection Engines,” A Report Prepared by the Committee on Adiabatic Diesel Technology, Energy Engineering Board, Commission on Engineering and Technical Systems, National Research Council, National Academy Press, Washington, D. C, 1987.
- Suziki T., Tsujita M., Mori Y. and Suzuki T., ”An Observation of Combustion Phenomenon on Heat Insulated Turbo-Charged and Inter-Cooled D.I. Diesel Engines,”SAE Transactions, Vol. 95, Sec. 4, pp. 4.804-4.819, 1986.
- Havstad P. H., Garwin I. J. and Wade W. R., “A Ceramic Insert Uncooled Diesel Engine,” SAE Transactions, Vol. 95, Sec.3, pp. 3.1-3.15, 1986.
- Moore C. H. and Hoehne J. L., “Combustion Chamber Effect on the Performance of a Low Heat Rejection Cummins V-903 Engine,” SAE Transactions, Vol. 95, Sec. 2, pp. 2.415-2.426, 1986.
- MacDonald J. S., Plee S. L., D'Arcy J. B. and Schreck R. M., “Experimental Measurements of the Independent Effects of Dilution Ratio and Filter Temperature on Diesel Exhaust Particulate Samples,” SAE Transactions, Vol. 89, pp. 1045-1056, 1980.
- Shimpi S. A. and Yu M.-L., “Determination of a Reliable and Efficient Diesel Particulate Extraction Process,” SAE Transactions, Vol. 90, Sec. 4, pp. 3617-3631, 1981.
- Willans P. W., “Steam-Engine Trials,” Minutes of Proceedings of the Institution of Civil Engineers, Vol. CXIV, pp. 2-122, 1893.
- Prabhakar R., Citron S. J. and Goodson R. E., “Optimization of Automotive Engine Fuel Economy and Emissions,” ASME Paper 75-WA/Aut-19, 1975.
- Greeves G. and Wang C. J. T., “Origins of Diesel Particulate Mass Emissions,” SAE Transactions, Vol. 90, pp. 1161-1172, 1981.