Numerical model of on-road emission rates of diesel buses in Beijing  

作　　者：王爱娟 葛蕴珊 谭建伟 丁焰 余林啸 冯向宇 郭佳栋 

机构地区：[1]National Laboratory of Auto Performance & Emission Test,School of Mechanical Engineering,Beijing Institute of Technology [2]Beijing Electric Vehicle Co Ltd [3]Chinese Research Academy of Environmental Sciences

出　　处：《Journal of Beijing Institute of Technology》2011年第3期359-364,共6页北京理工大学学报（英文版）

基　　金：Supported by State Key Laboratory of Engines(SKLE,200906);the National Natural Science Foundation of China(40805053)

摘　　要：A total of 14 in-use diesel buses were selected to conduct emission measurement using a portable emissions measurement system （PEMS） in Beijing. Their instantaneous gaseous emission rates, particular matter （PM） emission rates and driving parameters were obtained. The influences of speed, acceleration and vehicle specific power （VSP） on emissions were analyzed. Based on the relationships between these driving parameters and emissions, 24 driving bins defined by speed, ac- celeration and VSP were constructed with cluster analysis to group emission rates for Euro Ⅲ and IV buses, respectively. Then the emissions reductions from Euro Ⅲ to Euro Ⅳ diesel buses were ana- lyzed. Lastly, on-road hot-stabilized emission rate model for diesel buses in Beijing was developed. Through the comparison of the model simulation emission rates with the measured emission rates, the modeled emission results were in good agreement with the measured emission results. In most of the cases, the differences were less than 12 %.A total of 14 in-use diesel buses were selected to conduct emission measurement using a portable emissions measurement system （PEMS） in Beijing. Their instantaneous gaseous emission rates, particular matter （PM） emission rates and driving parameters were obtained. The influences of speed, acceleration and vehicle specific power （VSP） on emissions were analyzed. Based on the relationships between these driving parameters and emissions, 24 driving bins defined by speed, ac- celeration and VSP were constructed with cluster analysis to group emission rates for Euro Ⅲ and IV buses, respectively. Then the emissions reductions from Euro Ⅲ to Euro Ⅳ diesel buses were ana- lyzed. Lastly, on-road hot-stabilized emission rate model for diesel buses in Beijing was developed. Through the comparison of the model simulation emission rates with the measured emission rates, the modeled emission results were in good agreement with the measured emission results. In most of the cases, the differences were less than 12 %.

关 键 词：driving patterns vehicle specific power （VSP） portable emissions measurement sys-tem （PEMS） cluster analysis emission model 

分 类 号：X51[环境科学与工程—环境工程]