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Achievement of stable and clean combustion over a wide operating range in a spark-assisted IDI diesel engine with neat ethanol

Conference ·
OSTI ID:5821872
Spark-assisted diesel engines operated with alcohol fuels usually display misfiring or knocking problems. This paper presents an analysis of the factors influencing the ignition characteristics of ethanol in a swirl chamber diesel engine with a multi-spark ignitor. In the experiments, cycle-to-cycle combustion variations and the degree of knocking were investigated by changing engine parameters over a wide operating range. The results of the investigations showed that stable ignition and smooth combustion is achieved when a flammable mixture is formed in the vicinity of the spark plug when only a small amount of the injected fuel has evaporated.
OSTI ID:
5821872
Report Number(s):
SAE-TP-840850
Country of Publication:
United States
Language:
English