Real-world gaseous emission characteristics of natural gas heavy-duty sanitation trucks  

作　　者：Jiguang Wang Huaqiao Gui Zhiwen Yang Tongzhu Yu Xiaowen Zhang Jianguo Liu 

机构地区：[1]Key Laboratory of Environmental Optics and Technology,Anhui Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Hefei 230031,China [2]University of Science and Technology of China,Hefei 230026,China [3]China Automotive Technology and Research Center Co.,Ltd,Tianjin 300300,China [4]Innovation excellence center for urban atmospheric environment,Institute of Urban Environment,Chinese Academy of Sciences,Xiamen 361021,China

出　　处：《Journal of Environmental Sciences》2022年第5期319-329,共11页环境科学学报（英文版）

基　　金：This work was supported by the National Key Research and Development Project(No.2016YFC0201004);the National Natural Science Foundation of China(No.42005108);the Science and Technological Fund of Anhui Province for Outstanding Youth(No.1808085J19).

摘　　要：As compared to conventional diesel heavy-duty vehicles,natural gas vehicles have been proved to be more eco-friendly due to their lower production of greenhouse gas and pollu-tant emissions,which are causing enormous adverse effects on global warming and air pol-lution.However,natural gas vehicles were rarely studied before,especially through on-road measurements.In this study,a portable emission measurement system(PEMS)was em-ployed to investigate the real-world emissions of nitrogen oxides(NO_(x))(nitrogen monoxide(NO),nitrogen dioxide(NO_(2))),total hydrocarbons(THC),carbon monoxide(CO),and carbon dioxide(CO_(2))from two liquified natural gas(LNG)China V heavy-duty cleaning sanitation trucks with different weight.Associated with the more aggressive driving behaviors,the ve-hicle with lower weight exhibited higher CO_(2)(3%)but lower NO_(x)(48.3%)(NO_(2)(78.2%)and NO(29.4%)),CO(44.8%),and THC(3.7%)emission factors.Aggressive driving behaviors were also favorable to the production of THC,especially those in the medium-speed range but sig-nificantly negative to the production of CO and NO_(2),especially those in the low-speed range with high engine load.In particular,the emission rate ratio of NO_(2)/NO decreased with the increase of speed/scaled tractive power in different speed ranges.

关 键 词：Natural gas sanitation vehicle PEMS Gaseous pollutant emission 

分 类 号：X734.2[环境科学与工程—环境工程]