The Effect of Injection Start Angle of Vaporized LPG on SI Engine Operation Parameters

The paper presents the problem of the influence of sequential injection start angle of LPG gas on the course and the effects of the working process of an IC engine with spark ignition. The research was done on the four-cylinder engine C20LE Holden powered by the evaporated LPG gas with the volatile proportions 50/50 %. The research was carried out in steady state conditions and selected spark advance angles for different injection start angles. The analysis considers parameters which characterize combustion processes (torque, indicated pressure) and the concentration of toxic components in exhaust gases.