冷EGR温度对车用柴油机排放影响的试验  

Experiments of cooling EGR temperature influence on emission of diesel engines of vehicles

作　　者：张坤[1] 郭新民[1] 傅寿宇[1] 丁凯[1] 李爱娟[2] 

机构地区：[1]山东农业大学机械与电子工程学院,泰安271018 [2]南京航空航天大学能源与动力学院,南京210016

出　　处：《农业工程学报》2009年第10期127-130,共4页Transactions of the Chinese Society of Agricultural Engineering

基　　金：山东省教育厅资助项目(J07YF03)

摘　　要：为了得到冷却的废气再循环(EGR)技术对车用柴油机排放性能的影响,通过工况试验法研究了各工况下EGR温度对柴油机氮氧化物、碳氢化物、碳氧化物和烟度的排放量以及油耗率的影响,并由此得出柴油机各工况下的最佳EGR温度。试验表明,与热EGR相比,冷EGR能够明显降低氮氧化物和烟度的排放,同时能够降低油耗率,提高柴油机的经济性,效果良好。The influences of cooling EGR temperature on the emission of Nitrogen Oxide, Hydrocarbon, Carbon Oxide, smoke intensity and fuel consumption rate through the test of procedure were studied, in order to get the influence on emission performance of the diesel engines by cooling EGR. Based on the above, the best EGR temperature under various operating modes of diesel engines was obtained. The experiment indicated that compared with hot EGR, the cooling EGR could reduce the emission of Nitrogen Oxide and smoke intensity obviously, and also can reduce the fuel consumption rate and improve the efficiency of diesel engines, and the effect obtained is better.

关 键 词：车辆 柴油机 废气排出控制 油耗 废气再循环 EGR温度 

分 类 号：TK421.5[动力工程及工程热物理—动力机械及工程]