机动车排放污染的速度-加速度耦合影响分析  

Coupling effects of speed and acceleration on light duty vehicle emissions

作　　者：曲亮[1] 李孟良[2] 高佳佳[1] 高继东[2] 赵彦琳[1] 金陶胜[1] 

机构地区：[1]南开大学环境科学与工程学院,国家环境保护城市空气颗粒物污染防治重点实验室,天津300071 [2]中国汽车技术研究中心,天津300162

出　　处：《中国环境科学》2012年第8期1375-1378,共4页China Environmental Science

基　　金：国家自然科学基金资助项目(21177064)

摘　　要：利用OBS-2200车载测试系统,分别在高峰期、平峰期和低峰期的天津市典型路段进行了车载测试,并获得了碳氢化合物（HC）、一氧化碳（CO）和氮氧化物（NOx）等车辆排放的污染物的逐秒数据.结果显示在这3个时段内,车辆的加速度大都集中在-1.5~1.5m/s2,速度大都集中在0~70km/h,并且HC、CO和NOx的最高排放率为0.0673、0.706和0.0178g/s,都集中在高速（速度（v）〉30km/h,加速度（a）〉0.5m/s2）工况范围内.通过拟合发现,HC、CO和NOx的排放率与比功率（Vehicle Specific Power,简称VSP）之间的拟合决定系数分别为0.71、0.86和0.85,相关性较高,说明VSP可以作为评价车辆排放率的一个重要参考性指标.OBS-2200 on-board emission measurement system was used to analyze car emission in Tianjin’s typical roads in busy time（17：00~18：00）,common time（14：30~15：30） and free time（20：00~21：00）,respectively,and the second by second emission rates of HC,CO and NOx were also obtained.The results demonstrated that the accelerations of vehicle were within-1.5~1.5m/s2,and the speeds of vehicle were within 0~70km/h generally.The highest emission rates of HC,CO and NOx were 0.0673g/s,0.706g/s and 0.0178g/s,all of which concentrated within the operating conditions of high speed and high acceleration（v〉30km/h,a〉0.5m/s2）.Coefficients of determination between the emission rates（HC,CO and NOx） and VSP were 0.71,0.86 and 0.85,which showed that VSP can be referred as an indicator of vehicle emission.

关 键 词：机动车排放污染 车载测试 耦合影响 比功率 

分 类 号：X51[环境科学与工程—环境工程]