不同运行模式及测试循环下重型混合动力汽车排放特性试验研究  

Experimental Studies on Emission Characteristics of Heavy-Duty Hybrid Electric Vehicle under Different Operating Modes and Different Test Cycles

作　　者：李腾腾 赵健福 高东志 景晓军 吕恒绪 Li Tengteng;Zhao Jianfu;Gao Dongzhi;Jing Xiaojun;Lü Hengxu(Tianjin University,Tianjin 300072;CATARC Automotive Test Center(Tianjin)Co.,Ltd.,Tianjin 300300)

机构地区：[1]天津大学,天津300072 [2]中汽研汽车检验中心(天津)有限公司,天津300300

出　　处：《汽车技术》2023年第1期49-54,共6页Automobile Technology

基　　金：天津检验中心科研项目(TJKY2123005)。

摘　　要：以一台重型混合动力自卸车为研究对象,采用底盘测功机和便携式排放测试系统(PEMS)开展了不同运行模式(纯发动机模式和混合动力模式)和不同测试循环(C-WTVC和CHTC)下车辆排放特性试验研究,结合工况特征参数分析了车辆的排放表现。结果表明:相同的测试循环时,试验车辆混合动力模式下NOx排放量较纯发动机模式高,而CO排放量较纯发动机模式低;相同的运行模式时,纯发动机模式下,CHTC工况NOx排放量较C-WTVC工况高,而混合动力模式下,C-WTVC工况NOx排放量较CHTC工况高,纯发动机模式下,CO排放集中于低速小负荷工况,而混合动力模式下,CO排放集中于高速大负荷工况。The emission characteristics under different operating modes(engine mode and hybrid mode)and different test cycles(C-WTVC and CHTC)of a heavy-duty HEV was studies on the chassis dynamometer and Portable Emissions Measurement System(PEMS),emission performance of the HEV was analyzed in combination of the working condition characteristic parameters.The results show that NOx emission of the test vehicle under hybrid mode is higher than that under engine mode,while the CO emission under hybrid mode is lower than engine mode.Under engine mode,the NOx emission of CHTC is higher than that of C-WTVC.However,under hybrid mode,the NOx emission of CHTC is lower than C-WTVC.Under engine mode,CO emission is concentrated at low speed and low load condition,while under hybrid mode,CO emission is concentrated at high speed and high load condition.

关 键 词：重型混合动力汽车 C-WTVC 中国重型商用车辆行驶工况 排放特性 

分 类 号：U467.1[机械工程—车辆工程]