驾驶特性对进气道喷射汽油车RDE排放的影响  

Effect of Driving Pattern on RDE of Vehicle Equipped with a Port Fuel Injection Gasoline Engine

作　　者：汪晓伟 颜燕[1] 景晓军[1] 戴春蓓[1] 闫峰[1] Wang Xiaowei;Yan Yan;Jing Xiaojun;Dai Chunbei;Yan Feng(China Automotive Technology and Research Center Co.,Ltd.,Tianjin 300300)

机构地区：[1]中国汽车技术研究中心有限公司,天津300300

出　　处：《汽车工程》2018年第10期1146-1150,共5页Automotive Engineering

基　　金：科技部大气污染成因控制技术专项(2016YFC0208002和2017YFC0212101)资助

摘　　要：使用便携式车载排放设备(PEMs)对一辆装有进气道喷射的自然吸气发动机的轻型汽油车按照轻型车国Ⅵ标准进行了真实驾驶排放(RDE)测试,并通过行程动力学定义了温和驾驶和激进驾驶。结果表明:激进驾驶的NOx和PN排放跟温和驾驶相差不大。但在市区行程,激进驾驶的CO排放为温和驾驶CO排放的84倍。而对于总行程,激进驾驶的CO排放为温和驾驶CO排放的75倍。激进驾驶中频繁的加减速是CO排放大幅增加的主要原因。在市区行程,CO排放与加速度正相关;在高速行程,由于发动机运转在高速大负荷的工况点,而这些工况点在企业进行排放标定时往往被忽略,导致CO的排放很高。Real driving emission(RDE)tests are conducted by using a portable emission measurement system(PEMs)for a light duty gasoline vehicle equipped with a natural aspiration and port fuel injection(PFI)engine in accordance with ChinaⅥemission regulation of light-duty vehicles and moderate driving and dynamic driving are defined based on trip dynamics.Results show that NOx and PN emissions exhibit a small difference between dynamic driving and moderate driving,but the CO emission for dynamic driving is 84 times and 75 times of that for moderate driving in city trip and total trip respectively.Frequent acceleration and deceleration of dynamic driving is the major reason for drastic increase of CO emission.CO emission is proportional to the acceleration in the city trip.And the bad emission calibration for the high speed and high load condition may be responsible for the high CO emission in the motorway trip.

关 键 词：轻型车 进气道喷射 真实驾驶排放 温和驾驶 激进驾驶 

分 类 号：U467.48[机械工程—车辆工程]