Comparison of tailpipe carbonyls and volatile organic compounds emissions from in-use gasoline/CNG bi-fuel vehicles

作     者：Jiachen Li Yunshan Ge Xin Wang Mengzhu Zhang Haohao Wang Jiachen Li;Yunshan Ge;Xin Wang;Mengzhu Zhang;Haohao Wang

作者机构：School of Mechanical EngineeringBeijing Institute of TechnologyBeijing 100081China 

出 版 物：《Journal of Environmental Sciences》 (环境科学学报（英文版）)

年 卷 期：2024年第135卷第1期

页      面：619-629页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学] 

基　　金：received funding support from the National Natural Science Foundation of China (No.52272342) the National Engineering Laboratory for Mobile Source Emission Control Technology,China (No.NELMS2018A17) 

主　　题：CNG Gasoline Carbonyls VOCs OFP 

摘      要：Ground-level ozone contamination has been globally an urban air quality issue,particularly for China,which has recently made significant progress in purifying its *** exhaust emissions from motor vehicles,predominantly carbonyls and volatile organic compounds(VOCs),are among the leading contributors to ozone *** this chassislevel study,the unregulated emissions from five China-5 certified gasoline/CNG bi-fuel taxis,along with their ozone forming potential(OFP),were *** is found that carbonyls and VOCs were mainly emitted during the starting phase no matter the engine was cold or *** to gasoline,CNG fueling reduced VOCs emissions on a large scale,especially in the starting phase,but had elevated *** a fleet average,CNG fueling derived 15%and 46%less OFP than gasoline in cold-and hot-start tests,*** contributed to over 90%of the total OFP of the *** terms of alleviating ground-level ozone contamination,CNG is a feasible alternative to gasoline on light-duty vehicles.