气候变化领域集成服务门户(CCPortal): Evaluation of emissions benefits of OBD-based repairs for potential application in a heavy-duty vehicle Inspection and Maintenance program

CCPortal

DOI	10.1016/j.atmosenv.2021.118186
	Evaluation of emissions benefits of OBD-based repairs for potential application in a heavy-duty vehicle Inspection and Maintenance program
	Jiang Y.; Yang J.; Tan Y.; Yoon S.; Chang H.-L.; Collins J.; Maldonado H.; Carlock M.; Clark N.; McKain D.; Cocker D.; III; Karavalakis G.; Johnson K.C.; Durbin T.D.
发表日期	2021
ISSN	1352-2310
卷号	247
英文摘要	The implementation of a comprehensive heavy-duty vehicle (HDV) Inspection and Maintenance (I/M) program could be a critical element in ensuring the emission control effectiveness of diesel HDVs over their full useful life. An on-board diagnostics (OBD)-based I/M program could be a cost-effective emission reduction program for diesel HDVs. Forty-five vehicles equipped with selective catalytic reduction (SCR) with either the check-engine-light-on or malfunction-indicator-light (MIL)-on, or both, and in certain repairs categories, were identified and their emissions were measured before and after the repairs in this study. The post-repair nitrogen oxides (NOx) emissions decreased by 46%–75% for check-engine-light-on vehicles and by 53%–81% for MIL-on vehicles at different test speeds. NOx reductions for more than 55% of the vehicles showed reductions greater than 80% for at least one test speed. Pre-repair opacity readings from these HDVs were mostly lower than 5%, except for 6 vehicles that showed the opacity readings from 5.3% to 12.3%. After the repairs, opacity readings for all vehicles were below 5%, and average reductions of 43% in opacity were found for both check-engine-light-on and MIL-on cases. The testing results suggest that an OBD-based HDV I/M program would provide significant and tangible emission benefits. © 2021 Elsevier Ltd
英文关键词	Application programs; Automobile testing; Cost effectiveness; Diesel engines; Emission control; Light weight vehicles; Nitrogen oxides; Opacity; Program diagnostics; Selective catalytic reduction; Software testing; Control effectiveness; Cost effective; Critical elements; Emission reduction programs; Heavy duty vehicles; Inspection and maintenance; Nox reduction; On board diagnostics; Repair; Indicator indicator
语种	英语
来源期刊	Atmospheric Environment
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169024
作者单位	Department of Chemical and Environmental Engineering, Bourns College of Engineering, University of California, Riverside, CA 92521, United States; Bourns College of Engineering - Center for Environmental Research and Technology (CE-CERT), University of California, Riverside, CA 92521, United States; California Air Resources Board, 9528 Telstar Ave., El Monte, CA 91731, United States; California Air Resources Board, 1001 I St, Sacramento, CA 95814, United States; Consultant, West Covina, CA, United States; Center for Alternative Fuels Engines and Emissions, Benjamin M. Slater Department of Engineering and Mineral Resources, West Virginia University, Morgantown, WV 26506, United States
推荐引用方式 GB/T 7714	Jiang Y.,Yang J.,Tan Y.,et al. Evaluation of emissions benefits of OBD-based repairs for potential application in a heavy-duty vehicle Inspection and Maintenance program[J],2021,247.
APA	Jiang Y..,Yang J..,Tan Y..,Yoon S..,Chang H.-L..,...&Durbin T.D..(2021).Evaluation of emissions benefits of OBD-based repairs for potential application in a heavy-duty vehicle Inspection and Maintenance program.Atmospheric Environment,247.
MLA	Jiang Y.,et al."Evaluation of emissions benefits of OBD-based repairs for potential application in a heavy-duty vehicle Inspection and Maintenance program".Atmospheric Environment 247(2021).