Author(s): Qin Panpan, Li Shibiao, Deng Hongxi, Ge Mingsheng, Luo Fuqiang, School of Automobile and Traffic Engineering, Jiangsu University, Jiangsu SIDA Power Group
Pages: 121-123+131
Year: 2016 Issue:  1
Journal: Journal of Chinese Agricultural Mechanization
Keyword:  diesel engine; pilot-injection; NOX; smoke; EGR;
Abstract: The influences of EGR and pilot-injection parameters on emission and fuel consumption at medium speed and low-medium load of a 4-cylinder common-rail diesel engine were analyzed.EGR opening,pilot-injection quantity and the intervals between pilot-injection and main injection were optimized by experiment.At 50%load,when the EGR opening is less than 30%,and pilot-injection quantity is relatively small,the NO_X emission increases and smoke emission reduces relatively.While pilot-injection quantity keeps invariant,the NO_X emission decreases and smoke emission increases continuously with the increasing of EGR opening and the decreasing of pilot-injection and main injection intervals.At 25%load,a few of pilot-injection quantity can improve the NO_X and smoke emission simultaneously when the EGR valve closed completely.