An Investigation on the Effect of Top-land Crevices on Unburnt Hydrocarbon Emissions in Spark-Ignition Engines during the Start and Warm-up Period

摘要

In this paper, in order to explore the factors which affect the Hydrocarbon(HC) emissions and the effect of top-land crevices during the sart and warm-up period, main experiments are carried out to measure the top-land surface temperature and the instantaneous HC emissions.