Influence of ambient temperature on the CO_(2)emitted of light-duty vehicle  

作　　者：Dan Tan Yachao Wang Jianwei Tan Jiachen Li Changyu Wang Yunshan Ge 

机构地区：[1]School of Mechanical Engineering,Beijing Institute of Technology,Beijing 100081,China

出　　处：《Journal of Environmental Sciences》2024年第6期59-68,共10页环境科学学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.52172337);the National Engineering Laboratory for Mobile Source Emission Control Technology(No.NELMS2018A17);the National Key Research and Development Project of China(No.2018YFE0106800-001)。

摘　　要：Because of global warming,people have paid more attention to greenhouse gas emitted by vehicles.To quantify the impact of temperature on vehicle CO_(2)emissions,this study was conducted using the world light vehicle test cycle on two light-duty E10 gasoline vehicles a ambient temperatures of-10,0,23,and 40℃,and found that CO_(2)emission factors of Vehicle1 in the low-speed phase were 22.07%and 20.22%higher than those of Vehicle 2 at cold star and hot start under-10℃.The reason was vehicle 1 had a larger displacement and more friction pairs than vehicle 2.There was the highest CO_(2)emission at the low-speed phase due to low average speed,frequent acceleration,and deceleration.The CO_(2)temperature factor and the ambient temperature had a strong linear correlation(R2=0.99).According to CO_(2)temperature factors and their relationships,CO_(2)emission factors of other ambien temperatures could be calculated when the CO_(2)emission factor of 23℃was obtained,and the method also could be used to obtain the CO_(2)temperature factors of different vehicles.To separate the effect of load setting and temperature variation on CO_(2)emission quantitatively a method was proposed.And results showed that the load setting was dominant for the CO_(2)emission variation.Compared with 23℃,the CO_(2)emission for vehicle 1 caused by load setting variation were 62.83 and 47.42 g/km,respectively at-10 and 0℃,while those fo vehicle 2 were 45.01 and 35.63 g/km,respectively.

关 键 词：CO_(2)emission Ambient temperature E10 gasoline Light-duty vehicle WLTC 

分 类 号：X734.2[环境科学与工程—环境工程]