2016 Volume 47 Issue 5 Pages 1045-1050
In the diesel engine, deterioration of the degree of constant volume due to retard combustion has become a problem. Rapid combustion by shorter late combustion period is required for thermal efficiency improvement of the diesel engine. The purpose of this paper is to investigate the cause of the late combustion by focusing on mixture formation and combustion process. Therefore, visualization experiment of spray and combustion was conducted by using rapid compression and expansion machine (RCEM). And cause of the late combustion was investigated by spray shadowgraph, OH radicals, luminous flame image, in-cylinder pressure and PIV analysis data.
