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The Effect of Reduced Combustion Chamber Heat Loss on Combustion and Emissions of Alternative Fuels in a Light-duty DI Diesel
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Abstract
A research program was conducted to determine the effects of thermal barriers in the combustion chamber on emissions and combustion of a direct-injection diesel engine operated on selected alternate fuels. Steady-state exhaust emissions, cranking characteristics and combustion data of a baseline water-cooled engine were compared with those of a heat insulated uncooled engine with both engines operated on a reference fuel and two alternate fuels. A high compression ratio water-cooled engine with intake air heating was also included in the study.
Operating the baseline water-cooled engine on alternate fuel generally raised the level of exhaust emissions. In addition, ignition delay and the rates and relative amounts of premixed and diffusion burning were significantly altered when the baseline water-cooled engine was tested with alternate fuels. Thermally insulating the combustion chamber decreased ignition delay which resulted in reduced particulate emissions but increased hydrocarbon emissions. Likewise, raising compression ratio and intake air temperature decreased ignition delay which resulted in a reduction in hydrocarbon and oxides of nitrogen emissions. However, particulate emissions increased under these conditions.
Regarding starting, cranking speeds increased with decreasing fuel quality for the baseline water-cooled engine. Heat insulation of the combustion chamber reduced the adverse effects of the alternate fuels on starting, as did raising compression ratio and intake air temperature.
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Hunter, C., Havstad, P., Garwin, I., and Daby, E., "The Effect of Reduced Combustion Chamber Heat Loss on Combustion and Emissions of Alternative Fuels in a Light-duty DI Diesel," SAE Technical Paper 881628, 1988, https://doi.org/10.4271/881628.Also In
References
- Graves, R. L. “Technical Highlights of the Alternate Fuels Utilization Program,” Proceeding of the Twenty-Fifth Automotive Technology Development Contractors' Coordination Meeting SAE P 209 1987
- Gulder, O. L. Glavincevski, B. Burton, G. F. “Ignition Quality Rating Methods for Diesel Fuels-A Critical Appraisal” SAE Paper No, 852080 1988
- Hare, C. T. Baines, T. M. “Characterization of Particulate and Gaseous Emissions from Two Diesel Automobiles as a Function of Fuel and Driving Cycle” SAE Paper No. 790424 1979
- Barry, E. G. McCabe, L. J. Gerke, D. H. Perez, J, M. “Heavy-Duty Diesel Engine/Fuels Combustion Performance and Emissions-A Cooperative Research Program” SAE Paper No. 852078 1985
- Wall, J. C. Hoekman. S. K. “Fuel Composition Effects on Heavy-Duty Diesel Particulate Emissions,” SAB Paper No. 831364 1984
- Needham, J. R. Doyle, D. M. “The Combustion and Ignition Quality of Alternate Fuels in Light-Duty Diesels,” SAE Paper No. 852101 1985
- Dickey, D Vinyard, Shannon Callahan, T. Keribar, R. “The Effect of Insulated diesel Surfaces on Performance, Emissions, and Combustion,” Proceeding of the Twenty-Fifth Automotive Technology Development Contractors' Coordination Meeting SAE P - 209 1987
- Alkidas, A. C. “On the Performance and Emissions of an Uncooled Heavy-Duty Single-Cylinder Diesel Engine,” SAE Paper No. 880013 1988
- Wade, W. R. Havstad, P. H. Ounsted, E. J. Trinker, F. H. Garwin, I. J. “Fuel Economy Opportunities with an Uncooled DI Diesel Engine,” SAE Paper No. 841286 1984
- Havstad, P. H. Garwin, I. J. Wade, W. R. “A Ceramic Insert Uncooled Diesel Engine,” SAE Paper No. 860447 1986
- Belardini, P. Bertoli, C. Corcione, F. E. Police, G. “Effect of Fuel Quality on the Performance of High-Speed Direct Injection Diesel Engines” SAE Paper No. 852077 1985
- Needham, J. R. Doyle, D. M. “Investigation of the Effects of Fuel Composition, and Injection and Combustion System Type on Light-Duty Diesel Exhaust Emissions,”
- Wade, W. R. Hunter, C. E. “Analysis of Combustion Performance of Diesel Fuel” CRC Workshop on Diesel Fuel Combustion Performance Atlanta Georgia September 1983
- Johnson, T. Bhattacharyya, G. “Statistics Principles and Methods” John Wiley & Sons New York 1986 476 7