MMT对轻型GDI车辆PM/PN/PAHs排放的影响  

Effect of MMT on PM/PN/PAHs Emissions from Light-Duty GDI Vehicle

作　　者：倪虹[1] 郭红松[2] 曹磊[2] 秦宏宇[2] 付铁强[2] 陆红雨[2] 

机构地区：[1]中国环境科学研究院,北京100012 [2]中国汽车技术研究中心,天津300300

出　　处：《内燃机工程》2016年第1期57-61,共5页Chinese Internal Combustion Engine Engineering

摘　　要：在底盘测功机上利用ELPI等设备就甲基环戊二烯三羟基锰(MMT)对轻型汽油缸内直喷(GDI)车辆颗粒(PM)质量/颗粒数量(PN)/多环芳烃(PAHs)等排放的影响进行了研究,试验用油为一种不含MMT的基础油和两种调和油(MMT+基础油),试验车辆为国内外不同厂家生产的三辆轻型GDI车辆。研究发现:汽油中锰浓度由0提高到21.7mg/L,GDI车辆尾气中PN排放呈增加趋势,最大增幅超过一倍;PM中PAHs含量和排放质量显著下降,其中菲排放呈下降趋势,荧蒽排放呈升高趋势。The effects of MMT on particulate matter（PM） mass and particulate number（PN） as well as polycyclic aromatic hydrocarbons（PAHs） emissions etc. form light-duty GDI vehicle were studied by using ELPI instrument etc. on a chassis dynamometer. The fuels used in the experiment were one base gasoline and two kinds of blend fuel （MMT＋base gasoline）. Three light-duty GDI vehicles made by different OEMs from different countries were used. It was found that the PN from 3 GDI vehicles showed an increasing trend with more than doubled increment and the Mn concentration in gasoline increased from 0 to 21. 7 mg/L. Meanwhile, the PAHs emissions and its fraction in PM decreased dramatically. The PA was on the decline while the FL was on the rise in PAHs.

关 键 词：内燃机 轻型车 汽油缸内直喷 颗粒数 甲基环戊二烯三羟基锰(MMT) 多环芳烃 

分 类 号：TK411[动力工程及工程热物理—动力机械及工程]