Vol. 56 No. 2 (2019)   M-FET
Technical Papers

Proposal of Concept for Reducing Cycle-to-cycle Combustion Variations through Improvement of Pre-chamber Configuration in Gas Engines

TOMOHIRO KOGA
DAISUKE TAKEMOTO
YUSUKE IMAMORI
AKIHIRO YUKI
HIROYUKI ENDO
YUTA FURUKAWA

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.