生物柴油轿车排气颗粒的理化特性  

Physical and Chemical Properties of Exhaust Particulate Matter From a Diesel Passenger Car With Biodiesel Fuel

作　　者：谭丕强[1] 周舟[1] 胡志远[1] 楼狄明[1] 

机构地区：[1]同济大学汽车学院,上海201804

出　　处：《工程热物理学报》2013年第8期1586-1590,共5页Journal of Engineering Thermophysics

基　　金：国家自然科学基金项目(No.50906062);教育部中央高校基本科研业务基金;国家863项目(No.2008AA11A169)

摘　　要：研究了柴油轿车燃用生物柴油时排气颗粒的理化特性,所用燃油分别为纯柴油、生物柴油掺混比例为10%的B10燃油。进行了NEDC整车循环试验,测取了柴油轿车的排气颗粒质量、颗粒数量及粒径分布、颗粒多环芳烃的排放特性。结果表明:与纯柴油相比,该车燃用B10燃油的排气颗粒质量有所降低,但颗粒总数量有所增加。燃用生物柴油后,排气颗粒的粒径分布有整体向小粒径方向移动的趋势,较小粒径的核态颗粒数量有所增加,较大粒径的聚集态颗粒有所下降。在EUDC市郊循环下,该移动趋势更为明显。与纯柴油相比,该车燃用B10燃油的排气颗粒低环数PAHs有所增加,高环数的颗粒PAHs排放降幅明显。柴油轿车燃用生物柴油后,排气颗粒中多环芳烃BEQ毒性有所下降。Exhaust particulate matters （PM） from a diesel passenger car with biodiesel fuel under New European Driving Cycle （NEDC） test are studied in this paper. PM mass, particle number and size distribution, and particle-bound polycyclic aromatic hydrocarbons （PAHs） from the car are main study objects. Test fuels include pure diesel and 10% blend ratio biodiesel-diesel （B10） fuels. The results show that the exhaust PM mass from the car with B10 fuel is lower than pure diesel fuel, but the total particle number in the exhaust from the car with B10 fuel is higher than pure diesel rule. The size distributions of particle number from the car with biodiesel have a trend towards smaller particle size, and lead to more nucleation mode particle and less accumulation mode particle, and the trend is more distinct at Extra Urban Driving Cycle （EUDC）. Lower-cyclic FAHs of the car with B10 fuel have a small increase, but higher-cyclic PAHs decrease clearly. Benzo[a]pyrene equivalence （BEQ） toxic of exhaust particle-bound PAHs from the car with biodiesel have an obvious decrease.

关 键 词：柴油轿车 生物柴油 颗粒数量 粒径分布 多环芳烃 

分 类 号：TK421.5[动力工程及工程热物理—动力机械及工程]