CNG-电混动公交车道路行驶工况与排放特性研究  

Study on Driving Conditions and Emission Characteristics of CNG-Electricity Hybrid Bus

作　　者：丁健峰 朱孟良 崔焕星 李颖 杜骞 DING Jian-feng;ZHU Meng-liang;CUI Huan-xing;LI Ying;DU Qian(Ji'nan Automobile Testing Center Co.,Ltd.,Ji'nan 250102,China;Qihe Branch of Dezhou Ecological Environment Bureau,Dezhou 251100,China)

机构地区：[1]济南汽车检测中心有限公司,济南250102 [2]德州市生态环境局齐河分局,德州251100

出　　处：《内燃机与配件》2020年第1期20-23,共4页Internal Combustion Engine & Parts

基　　金：国家重点研发计划—非道路移动源排放标准评估与重要标准研究(2016YFC0208004)

摘　　要：CNG-电公交车以天然气作为发动机燃料,辅以电机共同驱动的混合动力车辆,车辆行驶速度低、启动频繁等特性,发动机实际运行工况与型式检验工况具有较大差异。为研究其实际行驶工况与排放特性,选取4辆国V排放标准的CNG-电混合动力公交车,往返于市区与城郊,使用PEMS(portable emission measurement system)实时收集车辆行驶及NO_X排放数据。结果表明,发动机运行工况集中于中低功率段,与型式检验工况差异较大,污染物排放集中于发动机切入车辆传动系统的临界车速附近。CNG-electric bus uses natural gas as engine fuel,supplemented by a hybrid vehicle driven by motor.Due to the low speed and frequent starting,the actual operating condition of the engine is quite different from the type test condition.In order to study its actual driving emission characteristics,4 CNG-electric hybrid buses with national V emission standard were selected to travel between urban and suburban areas,and real-time data of driving and NOX emission were collected using PEMS(portable emission measurement system).The results show that the operating condition of the engine is concentrated in the middle and low power segment,which is different from the type test condition.

关 键 词：混合动力 公交车 PEMS 排放特性 

分 类 号：U46[机械工程—车辆工程]