Improving the Performance of a Small Spark-Ignition Engine by Using Oxygen-Enriched Intake Air
摘要：
In order to improve the performance of a small gasoline engine, a part of oxygen is added to the intake air when the engine is operated at wide open throttle. The combustion process can be enhanced by using an oxidant that contains a higher proportion of oxygen than that in normal air. This paper studies the combustion characteristics and engine performance of such engine. Engine testing is performed on a 50 cc four-stroke, spark-ignition engine with the oxygen concentration of intake air ranging from 21% to 25% by volume. The engine torque is increased with increasing oxygen concentration. The HC and CO emissions are decreased with oxygen enrichment, but the NO{sub}x emission is increased.
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关键词：
Combustion processes Engine tests Intake systems Mathematical models Motorcycles Oxygen Spark ignition engines
被引量：
年份：
2007
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