国Ⅳ汽油车NEDC循环下的排放特性分析Analysis on Emission Performance of China IV Gasoline Vehicles at NEDC Test Cycles
彭磊;秦孔建;乔维高;王凤滨;
摘要(Abstract):
对5辆满足国Ⅳ排放标准的不同汽油车进行了NEDC循环下的排放试验。结果表明,在机外净化方面,催化转化器具有较好的排放控制效果;在机内净化方面,缸内直喷式(GDI)汽油车HC和CO的排放小于进气管喷射式(PFI)汽油车,但NOx排放相对较高;两种喷油方式汽油车平均粒径小于1 um的颗粒物数量均超过了排放总量的95%;试验车在过渡工况占多数的市区运转循环下排放恶化,而在等速工况占多数的市郊运转循环下排放较好。
关键词(KeyWords): 汽油车;NEDC;排放;分析
基金项目(Foundation):
作者(Authors): 彭磊;秦孔建;乔维高;王凤滨;
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