非直喷式柴油机低温起动时非稳态燃烧过程分析

THE ANALYSIS OF UNSTEADY COMBUSTION OF IDIDIESEL ENGINE IN COLD STARTING STAGE

利用精确的零维模型和程序对实测涡流室式柴油机在低温起动时的非稳态燃烧过程进行了分析，分别计算和探讨了主、副燃烧室的放热规律。

A great attention has been paid to the cold starting of swirl chamber diesel engine because of its complexity. This paper uses the precise zero dimentional model and program to analyze the unsteady combustion process of IDI diesel engine by experiment, estimate the rules of heat release of three types of typical combustion (type V、type W and type Y) of main chamber and swirl chamber at cold starting and also the rules of heat release of steady combustion at stated working. Some important conclusions for improving the performance of a diesel engine at cold starting are obtained, which are valuable in both theory and practice.