A One-dimensional Combustion Model for a Dual Chamber Stratified Charge Spark Ignition Engine
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Published: 1979
Total Pages: 18
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Published: 1979
Total Pages: 18
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DOWNLOAD EBOOKAuthor: S. C. Sorenson
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Published: 1979
Total Pages: 18
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Published: 1979
Total Pages:
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DOWNLOAD EBOOKA combined experimental and theoretical investigation of the nature of the combustion processes in a dual chamber stratified charge spark ignition engine is described. This work concentrated on understanding the mixing process in the main chamber gases. A specially constructed single cylinder engine was used to both conduct experiments to study mixing effects and to obtain experimental data for the validation of the computer model which was constructed in the theoretical portion of the study. The test procedures are described. Studies were conducted on the effect of fuel injection timing on performance and emissions using the combination of orifice size and prechamber to main chamber flow rate ratio which gave the best overall compromise between emissions and performance. In general, fuel injection gave slightly higher oxides of nitrogen, but considerably lower hydrocarbon and carbon monoxide emissions than the carbureted form of the engine. Experiments with engine intake port redesign to promote swirl mixing indicated a substantial increase in the power output from the engine and, that an equivalent power levels, the nitric oxide emissions are approximately 30% lower with swirl in the main chamber than without swirl. The development of a computer simulation of the combustion process showed that a one-dimensional combustion model can be used to accurately predict trends in engine operation conditions and nitric oxide emissions even though the actual flame in the engine is not completely one-dimensional, and that a simple model for mixing of the main chamber and prechamber intake gases at the start of compression proved adequate to explain the effects of swirl, ignition timing, overall fuel air ratio, volumetric efficiency, and variations in prechamber air fuel ratio and fuel rate percentage on engine power and nitric oxide emissions. (LCL).
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Published: 1979
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DOWNLOAD EBOOKAuthor: Li Fan
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Published: 2000
Total Pages: 214
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DOWNLOAD EBOOKAuthor:
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Published: 1980
Total Pages: 436
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DOWNLOAD EBOOKAuthor: Samuel Shangchi Pan
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Published: 1979
Total Pages: 392
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DOWNLOAD EBOOKAuthor: Samuel Shangchi Pan
Publisher:
Published: 1979
Total Pages: 388
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DOWNLOAD EBOOKAuthor: C. BORGNAKKE, P. PUZINAUSKAS, Y. XIAO
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Published: 1986
Total Pages: 74
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DOWNLOAD EBOOKAuthor: Robert L. Evans
Publisher: Springer Science & Business Media
Published: 2013-06-29
Total Pages: 269
ISBN-13: 1475793480
DOWNLOAD EBOOKThis book contains the proceedings of the International Symposium on Alternative and Advanced Automotive Engines, held in Vancouver, B.C., on August 11 and 12, 1986. The symposium was sponsored by EXPO 86 and The University of British Columbia, and was part of the specialized periods program of EXPO 86, the 1986 world's fair held in Vancouver. Some 80 attendees were drawn from 11 countries, representing the academic, auto motive and large engine communities. The purpose of the symposium was to provide a critical review of the major alternatives to the internal combustion engine. The scope of the symposium was limited to consideration of combustion engines, so that electric power, for example, was not considered. This was not a reflec tion on the possible contribution which electric propulsion may make in the future, but rather an attempt to focus the proceedings more sharply than if all possible propulsion systems had been considered. In this way all of the contributors were able to participate in the sometimes lively discussion sessions following the presentation of each paper.