To meet the needs for high efficiency and high power output in the gas engine market, it is important to reduce cycle-to-cycle combustion variations. In this paper, a combustion variation reduction concept derived through simulation technology (LES: Large-Eddy Simulation) that is more advanced than the conventional analysis method is described. By using LES technology, we were able to analyze the phenomenon of cycle-to-cycle combustion variations, which was difficult to understand using the conventional method. This made it possible to conduct factor analysis/concept design and contributed to the development of combustion variation reduction technology.
