Abstract
Combustion behaviors of gasoline rotary engines (hereinafter referred to as "RE") are different from those of reciprocating engines (that is conventional engines, and hereinafter referred to as "CE"), due to differences in its operating principle. So understanding of RE unique phenomena is essential to improve its thermal efficiencies. Thus, in order to understand the mechanism of RE combustion, Mazda has analyzed heat balance calculated from engine indicated pressure, visualized combustion state on a bench test engine, simulated their combustion properties, and created a combustion simulation model based on these experimental results. This paper will introduce findings from these activities, points of observations on characteristics of RE combustion, and examples of combustion improvements.
