POC、DOC对柴油机气体排放的影响  

The Effects of POC and DOC on the Gas Emissions of Diesel Engine

作　　者：马志豪[1] 任源[1] 李磊[1] 钞莹[1] 许新 徐斌[1] 吴健[1] 

机构地区：[1]河南科技大学车辆与动力工程学院,河南洛阳471003 [2]广州新力金属有限公司

出　　处：《小型内燃机与摩托车》2013年第2期59-63,共5页Small Internal Combustion Engine and Motorcycle

基　　金：汽车安全与节能国家重点实验室(KF11161);河南省自然科学基金(092300410125)

摘　　要：在发动机台架上进行了柴油机的ESC循环测试,并利用废气分析仪对其主要的气体排放进行测量。对比了光管、单独使用POC、DOC+POC组合情况下发动机的气体排放特性,着重分析了POC在净化气体排放方面的效果和局限。试验结果表明,单独的POC以及DOC+POC组合,与光管时相比,都能显著降低CO、HC的排放,且DOC+POC组合的转化效率更高,但是,POC、DOC+POC对NOx排放几乎没有影响,NOx排放的总量基本不变。A bench test was conducted with European Steady-state Cycle （ESC）on a diesel engine and its maingas emissions were measured by emission analyzer. The gas emissions characteristics of the engine were compared among blank pipe, POC only and POC ＋ DOC. The effects and limitation of POC on gas emission purification were analyzed. The test results show that both POC only and POC ＋ DOC can significantly reduce the emissions of CO and HC compared with blank pipe. Furthermore, the transfer efficiency of DOC ＋ POC is higher. However, POC only and the POC ＋ DOC can hardly affect the NOx emissions, total quantity of which remains constant more or less.

关 键 词：柴油机 POC DOC 气体排放 ESC测试循环 

分 类 号：TK421.5[动力工程及工程热物理—动力机械及工程]