气候变化领域集成服务门户(CCPortal): A Vehicle Activity-based Windowing approach to evaluate real-world NOx emissions from Modern Heavy-duty Diesel Trucks

CCPortal

DOI	10.1016/j.atmosenv.2020.118169
	A Vehicle Activity-based Windowing approach to evaluate real-world NOx emissions from Modern Heavy-duty Diesel Trucks
	Pondicherry R.; Besch M.C.; Thiruvengadam A.; Carder D.
发表日期	2021
ISSN	1352-2310
卷号	247
英文摘要	The Not-to-Exceed (NTE) protocol developed in 2004 is currently used for verification of emissions compliance during in-fleet operation. However, the NTE protocol has come under scrutiny for assessment of test activity only under specific modes of in-use operation (i.e., favorable to NOx reduction aftertreatment system), therefore resulting in a limited amount of in-use activity being utilized for evaluation of the engine's compliance. This paper presents the application of an alternative concept, i.e., Vehicle Activity-based Windowing (ABW) approach to assess in-use NOx emissions rates while segregating engine and aftertreatment dependent modes of operating conditions. To this aim, in-use gaseous emissions were measured using a portable emissions measurement system (PEMS) from four modern heavy-duty (HD) trucks that were operated along four distinctive routes in Southern California. All the four trucks were equipped with diesel-fueled engines certified to the United States Environmental Protection Agency (U.S. EPA) 2010 emissions standards and were equipped with a diesel oxidation catalyst (DOC), diesel particulate filter (DPF), and selective catalytic reduction (SCR) aftertreatment configuration. Results of the study indicate that the ABW approach provides a unique opportunity of utilizing more than 90% of test activity acquired from valid ABW trips while demonstrating a characteristic comparison of NOx emissions levels from low versus medium/high power engine operation that are within as well as outside the bounds of efficient SCR operating conditions. © 2020 Elsevier Ltd
关键词	Heavy-duty diesel trucks Not-to-exceed (NTE)NOx emissions Portable emissions measurement system (PEMS)Selective catalytic reduction
语种	英语
scopus关键词	Air pollution control equipment; Automobile engines; Catalytic oxidation; Compliance control; Diesel engines; Environmental Protection Agency; Nitrogen oxides; Trucks; Alternative concepts; Diesel oxidation catalyst; Diesel particulate filters; Emissions compliance; Operating condition; Portable emissions measurement systems (PEMS); Southern California; United States environmental protection agency; Selective catalytic reduction; diesel fuel; nitrogen oxide; Article; comparative study; diesel engine; diesel particulate matter; environmental protection; exhaust gas; priority journal
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/248619
作者单位	Department of Mechanical and Aerospace Engineering, West Virginia University, Morgantown, WV 26505, United States
推荐引用方式 GB/T 7714	Pondicherry R.,Besch M.C.,Thiruvengadam A.,et al. A Vehicle Activity-based Windowing approach to evaluate real-world NOx emissions from Modern Heavy-duty Diesel Trucks[J],2021,247.
APA	Pondicherry R.,Besch M.C.,Thiruvengadam A.,&Carder D..(2021).A Vehicle Activity-based Windowing approach to evaluate real-world NOx emissions from Modern Heavy-duty Diesel Trucks.ATMOSPHERIC ENVIRONMENT,247.
MLA	Pondicherry R.,et al."A Vehicle Activity-based Windowing approach to evaluate real-world NOx emissions from Modern Heavy-duty Diesel Trucks".ATMOSPHERIC ENVIRONMENT 247(2021).