Abstract
Replacing gasoline with aviation kerosene for spark-ignition(SI) piston engines applied for aircrafts has become an essential trend. In this study, the fuel evaporation, mixture distribution, and flame propagation process of gasoline and aviation kerosene in a four-stroke SI engine are investigated through computed-fluid-dynamics(CFD) simulation to analyze in-cylinder combustion process and lay a theoretical foundation for some strange experimental phenomenon. The tested engine was operated under two different combustion mechanisms (with or without pre-chamber) and two throttle openings (26% and 30%) at a fixed engine speed of 5000 rpm.
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