国六轻型汽油车温室气体排放特征  

Greenhouse gas emissions characteristics of China VI light-duty gasoline vehicles

作　　者：尹黛霖 艾力力 温溢[1] YIN Dai-lin;AI Li-li;WENG Yi(China Automotive Technology and Research Center Co.,Ltd,Tianjin 300300,China)

机构地区：[1]中国汽车技术研究中心有限公司,天津300300

出　　处：《中国环境科学》2024年第2期679-685,共7页China Environmental Science

基　　金：京博吉大油机协同研发开放课题项目(CSICE-K202206)。

摘　　要：采用全球统一轻型车辆测试循环工况(WLTC)下实测的方法,对84辆国六轻型汽油车的温室气体排放进行研究,其中包括6辆混合动力车辆.结果表明,车辆的温室气体排放基本呈现随着排量增大而上升的趋势,大排量车辆通常具有更复杂的发动机设计,增加了温室气体的排放不确定性.各类车辆的CH_(4)和N_(2)O经温室气体变暖潜值转换后引起的CO_(2)增长率都小于1%,由此说明车辆尾气中产生的CO_(2)排放仍是温室气体的主要来源.此外,国六轻型汽油车的温室气体排放特征与其发动机技术也密切相关,不可插电式混合动力车辆的温室气体排放量能降低23.4%~27.9%.The World Light Vehicle Test Cycle(WLTC)was used to measure the emissions of 84 China VI light-duty gasoline vehicles,including 6hybrid vehicles.The results showed that the greenhouse gas emissions of vehicles generally increase with engine displacement.Vehicles with larger displacements usually have more complex engine designs,which increases the uncertainty of greenhouse gas emissions.The CO2 growth rate caused by the CH4 and N2O emissions from various types of vehicles,converted into greenhouse gas warming potentials,is less than 1%,indicated that CO2 emissions from vehicle exhaust are still the main source of greenhouse gases.In addition,the greenhouse gas emissions of China VI light-duty gasoline vehicles were closely related to the engine technology,and the emissions from plug-in hybrid vehicles can be reduced by about 23.4%to 27.9%.

关 键 词：温室气体 轻型车 WLTC测试 发动机技术 

分 类 号：X511[环境科学与工程—环境工程]