国Ⅳ汽油车颗粒物数目排放特性研究  

Research on Emissions Performance of Particle Number for the China IV Gasoline Vehicle

作　　者：高俊华[1] 高章[1] 刘双喜[1] 颜伏伍[2] 

机构地区：[1]中国汽车技术研究中心,天津300162 [2]武汉理工大学汽车工程学院,武汉430070

出　　处：《武汉理工大学学报（交通科学与工程版）》2013年第2期311-315,320,共6页Journal of Wuhan University of Technology（Transportation Science & Engineering）

基　　金：北京市科学技术委员会项目资助(批准号:D0405002040411)

摘　　要：在底盘测功机上按NEDC循环工况,使用电子低压冲击仪(ELPI)对2辆满足国IV的气道喷射(PFI)和缸内直喷技术(GDI)的汽油车进行颗粒物排放特性研究.研究结果表明:直喷汽油车所产生的颗粒物数目浓度大于气道喷射的车子.车辆冷热状态对颗粒数目浓度的影响大于不同循环的影响.PFI汽车比GDI汽车更容易受车辆冷热状态的影响.在冷启动ECE循环颗粒数目浓度最高.在高速和加速工况下颗粒数目浓度较大.速度的增加导致颗粒的细小化.EUDC循环的颗粒数目浓度比ECE循环的大.The experiment reported here was to study emission of gasoline vehicle which answers to chi- naⅣ emission standards, including the vehicle of port fuel injection （PFI） and gasoline direct injec- tion （GDI）, with ELPI device in NEDC test cycle. The result of test shows that the number concen- tration of particulate for the vehicle of GDI is larger than that of PFI. The influence of the car＇s condi- tion on the number concentration of particulate is bigger than the cycle＇s and the vehicle of PFI is more vulnerable to the condition of car than the vehicle of GDI. The concentration is highest in the first ECE cycle of cold-start and is big in the phases of acceleration and high speed. The particulate becomes smaller as the speed increases. The particulate＇s number concentration of EUDC is larger than that of ECE.

关 键 词：汽油车 颗粒物数目浓度 电子低压冲击器 ECE 

分 类 号：TK411.52[动力工程及工程热物理—动力机械及工程]