国五轻型汽油车气态污染物排放劣化分析  

Study on emission deterioration of gaseous pollutants from China Ⅴ light gasoline vehicles

作　　者：李雪瑶 李进 杨正军[3] 殷小鸽 齐靖宇 朱庆功[3] 金陶胜[1] LI Xueyao;LI Jin;YANG Zhengjun;YIN Xiaoge;QI Jingyu;ZHU Qinggong;JIN Taosheng(Tianjin Key Laboratory of Urban Transport Emission Research,State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control,College of Environmental Science and Engineering,Nankai University,Tianjin 300350,China;Jilin Jianzhu University,School of Municipal and Environmental Engineering,Changchun 130118,China;China Automotive Technology&Research Center Co.,Ltd,Beijing 100176,China;Tianjin Port Free Trade Zone Environmental Monitoring Station,Tianjin 300308,China)

机构地区：[1]南开大学环境科学与工程学院,城市交通排放研究中心,国家环境保护城市大气颗粒物污染防治重点实验室,天津300350 [2]吉林建筑大学市政与环境工程学院,长春130118 [3]中国汽车技术研究中心有限公司,北京100176 [4]天津港保税区环境监测站,天津300308

出　　处：《环境工程学报》2022年第6期1872-1878,共7页Chinese Journal of Environmental Engineering

基　　金：国家重点研发计划专项(2017YFC0212100);国家自然科学基金面上项目(21477057)。

摘　　要：为了解机动车行驶里程增加时气态污染物的排放劣化特性,以12辆满足国五排放水平标准的轻型汽油车为研究对象,应用底盘测功机通过台架测试方法进行整车实验并收集数据,研究了10×10^(4) km累积里程对轻型汽油车污染物(NO_(x)、THC和CO)排放因子的影响和不同车型的排放量随行驶里程劣化规律。结果表明,轻型汽油车NO_(x)、THC和CO的排放因子与累积里程之间存在线性关系。增压中冷进气方式下3种污染物的劣化速度均高于自然吸气下的劣化速度。通过计算获得实验车辆污染物NO_(x)、THC和CO的平均劣化系数分别为2.0、2.1和2.6(标准推荐值分别为1.6、1.3和1.5)。本研究结果可为机动车污染物变化趋势的预测和标准劣化系数的修订提供数据参考。To understand the deterioration characteristics of gaseous pollutants emissions with increasing vehicle mileage,12 light-duty gasoline vehicles that met the China V emission standard were selected to carry out the whole vehicle bench test experiment using the chassis dynamometer.The effect of the accumulated mileage of 100,000 kilometers on emission factors of NO_(x),THC and CO for light gasoline vehicles and the deterioration rules of different models with mileage were investigated.The results showed that there was a significant linear relationship between emission factors of NO_(x),THC,CO of light gasoline vehicles and accumulated mileage(correlation coefficient R^(2) was between 0.48 and 0.75).The deterioration rate of three pollutants under turbocharged technology was higher than that under inhale naturally technology.The average deterioration factors of NO_(x),THC and CO of vehicles were 2.0,2.1 and 2.6,respectively(standard recommended values were 1.6,1.3 and 1.5,respectively).This study can provide a reference for the prediction of pollutant change trends and the revision of standard deterioration factors.

关 键 词：轻型汽油车 排放标准五阶段 气态污染物 排放因子 劣化系数 

分 类 号：X511[环境科学与工程—环境工程]