基于RDE试验的车用发动机工作状态和排放浅析  

Analysis of Working State and Emission for Vehicle Engine Based on RDE Test

作　　者：张帅 宋铁兵 谷家鑫 李向飞 缪曙霞 白宝国 谭建松 ZHANG Shuai;SONG Tiebing;GU Jiaxin;LI Xiangfei;MIAO Shuxia;BAI Baoguo;TAN Jiansong(Power Center of Beijing Automotive Research Institute,Beijing 101300,China)

机构地区：[1]北京汽车股份研究院动力中心,北京101300

出　　处：《车用发动机》2021年第2期71-75,共5页Vehicle Engine

基　　金：国家重点研发计划资助项目(2017YFB0103403)。

摘　　要：在北京、重庆和昆明地区开展了轻型汽油车RDE试验,在满足当前法规RDE要求的前提下,研究了驾驶行为对轻型汽油车发动机工作载荷和真实道路排放的影响。研究结果表明:与WLTC工况下发动机的工作载荷相比,RDE试验发动机工作载荷区域更宽;RDE试验过程中激烈驾驶会引起燃油保护加浓,燃油保护加浓会导致CO排放随着激烈程度的增大非线性升高;基于平原WLTC循环的CO_(2)特性曲线在高原地区开展RDE试验时,RDE试验窗口的正常性难以通过;冷起动阶段的排放远高于起动后的排放,起动阶段的排放物应纳于标准检测范围并予以规范。The RDE tests of light duty gasoline vehicles were carried out in Beijing,Chongqing and Kunming respectively.Under the premise of meeting the current RDE regulative requirements,the influences of driving behavior on working load and emission were studied.Compared with the working load of WLTC,the range of RDE load was wider.In RDE test,the aggressive driving would lead to the fuel protection enrichment,and hence CO emission increased nonlinearly with the increase of aggressive degree.By using the CO_(2) plain characteristic curve of WLTC cycle at plateau,the normality of RDE test windows was difficult to be meted.The emission of cold start stage was much higher than that of post start-up stage and therefore should be restricted within the standard legislative regulation range.

关 键 词：轻型汽油车 RDE 驾驶行为 排放特性 燃油加浓 

分 类 号：TK411.5[动力工程及工程热物理—动力机械及工程]