轻型车非常规污染物影响因素研究  

Influencing Factors of Non-conventional Pollutants Emitted by Light-duty Vehicle

作　　者：赵伟[1] 陆红雨[1] 付铁强[1] 王玉伟[1] 刘乐[1] 张仲荣[1] 

机构地区：[1]中国汽车技术研究中心,天津300300

出　　处：《车用发动机》2014年第4期55-59,共5页Vehicle Engine

摘　　要：联合使用MEX-7200和FTIR对轻型车进行了非常规污染物测试，研究了温度、行驶里程、驾驶循环等因素对 HCHO ，1，3-C4 H6，C6 H6和C7 H8等非常规排放物的影响。结果表明：非常规污染物排放主要集中在发动机起动后的前100 s内，C7 H8排放量最大，HCHO排放量最小；低温以及行驶里程增加均会造成非常规污染物的升高，其中-7℃条件下 HCHO ，1，3-C4 H6，C6 H6以及C7 H8等排放量相比室温条件下增加了7．3～11．6倍；随里程增加，C7 H8增幅最为明显，排放量最高达8 mg/km ，但C6 H6与1，3-C4 H6的排放量变化较为平缓，保持在2～4 mg/km。The non-conventional pollutants of light-duty vehicle were measured by the MEXA-7200 and FTIR and the influ-ences of temperature ,mileage and driving cycle on HCHO ,1 ,3-C4 H6 ,C6 H6 and C7 H8 were researched .The results showed that the non-conventional pollutants emitted mainly in the first 100 s period since engine start ,during which the emission of C7 H8 and HCHO is the most and the least respectively .Low temperature and mileage increase both led to the increase of non-conventional pollutants .Wherein at -7 ℃ ,the emissions of HCHO ,1 ,3-C4 H6 ,C6 H6 and C7 H8 increased by 7 .3-11 .6 times . With the increase of mileage ,the emission of C7 H8 increased remarkably and its peak reached 8 mg/km ,but the emissions of C6 H6 and 1 ,3-C4 H6 hardly changed and always kept in the range of 2-4 mg/km .

关 键 词：轻型汽车 非常规污染物 温度 行驶里程 测试循环 

分 类 号：TK411.51[动力工程及工程热物理—动力机械及工程]