DOC/POC耦合对柴油机燃用欧Ⅲ/欧Ⅳ柴油尾气排放的影响研究
Modern Vehicle Power(2013)
Abstract
按照ESC 13工况测试循环,在1台4缸柴油机上进行DOC/POC耦合净化器对柴油机分别燃用欧Ⅲ/欧Ⅳ柴油后污染物净化效果的试验研究。结果表明,燃油油品差异对不装净化器的HC,CO和NOx排放影响极小。耦合净化器对HC和CO的净化率分别达到85%和90%。受油品含硫量影响,耦合净化器对欧Ⅲ柴油PM不起作用,反而会使PM排放增加22.3%,然而对欧Ⅳ柴油的PM可净化45%。综合来看,仍需对该净化器重新设计并优化柴油机燃烧系统才能使该发动机达到国Ⅳ排放标准。
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Key words
intergrated purifier,exhaust emissions,Euro-Ⅲ/Ⅳ fuels,diesel engine
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