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Engine Combustion at Large Bore-to-Stroke Ratios
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English
Abstract
The effect of bore-to-stroke ratio (B/S) on indicated specific fuel consumption (ISFC) and emissions of a gasoline-fueled, spark-ignited, single-cylinder engine was studied while holding compression ratio and bore diameter constant. As B/S was increased from 1.1 to 3.3, both ISFC and hydrocarbon emissions increased significantly. Increased cylinder heat loss and, to a lesser extent, increased combustion duration were the principal causes of the ISFC increase. Increased surface-to-volume ratio was the principal cause of the increase in hydrocarbon emissions. The influence of combustion chamber modifications on these effects was investigated.
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Citation
Siewert, R., "Engine Combustion at Large Bore-to-Stroke Ratios," SAE Technical Paper 780968, 1978, https://doi.org/10.4271/780968.Also In
References
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