气候变化领域集成服务门户(CCPortal): Real-world emissions from modern heavy-duty vehicles: Sensitivity analysis of in-use emissions analysis methods

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DOI	10.1016/j.atmosenv.2021.118294
	Real-world emissions from modern heavy-duty vehicles: Sensitivity analysis of in-use emissions analysis methods
	Demirgok B.; Thiruvengadam A.; Pradhan S.; Besch M.; Thiruvengadam P.; Posada F.; Quiros D.C.; Hu S.
发表日期	2021
ISSN	1352-2310
卷号	252
英文摘要	This study presents an analysis of real-world emissions from two heavy-duty trucks using the Not-To-Exceed (NTE) and the European based Work-Based-Window (WBW) methodologies. The study also presents a sensitivity analysis of the NTE and WBW approach to key parameters such as window duration, torque, power, and exhaust aftertreatment thresholds. The analysis is performed on data collected from two heavy-duty diesel vehicles operated under real-world conditions in California over various routes that include a combination of urban and freeway type operation. The results presented show that only 10–30% of the total data meets the required exclusion criteria prescribed by the current NTE regulation. Reducing the NTE window duration from the existing 30 to 10 s increases the number of windows available to perform NTE analysis. The study also shows that exempting data that correspond to exhaust aftertreatment system (EATS) temperature threshold of below 250 °C is the most dominant parameter influencing the number of available windows in an urban-type operation. The WBW approach produces a rich collection of data points that are representative of the in-use emissions characteristic of the vehicle. The results of NOx vs CO2 using a 4-quadrant analysis from the WBW approach is indicative of a difference in engine manufacturer design and emissions control strategy pertaining to real-world operation. The results of the study show that revisions to the boundaries and exclusions to the NTE zone would contribute to broadening the scope of in-use assessment of heavy-duty vehicle operation. However, even with such modifications, the NTE may not apply to highly transient urban vocations such as delivery, refuse and transit bus vocations. While comparing the moving average WBW approach to the NTE, the former approach produces a significantly larger number of data points for in-use assessment. © 2021 Elsevier Ltd
关键词	Heavy-duty truck In-use emissions NTE Off-cycle emissions Oxides of nitrogen Portable emission measurement system Regulatory protocols WBW
语种	英语
scopus关键词	Automobile manufacture; Automobiles; Trucks; Heavy duty vehicles; Heavy-duty trucks; In-use emission; Not-to-exceed; Off-cycle emission; Oxides of nitrogen; Portable emission measurement system; Real-world emission; Regulatory protocol; Work-based-window; Sensitivity analysis; nitrogen; oxide; carbon dioxide; diesel; nitrous oxide; sensitivity analysis; threshold; traffic emission; air pollution control; Article; California; combustion; diesel engine; exhaust gas; government; highway; motor vehicle; Ontario; priority journal; sensitivity analysis; traffic; traffic pollution; urban area; urbanization; California; United States
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/248514
作者单位	Mechanical and Aerospace DepartmentWest Virginia University 395 Evansdale Drive MorgantownWV 26506, United States; The International Council on Clean Transportation 1225 Street NW, Suite 900Washington DCDC 20005, United States; Monitoring and Laboratory Division, California Air Resources Board 1327 13th, Sacramento, CA 95811, United States
推荐引用方式 GB/T 7714	Demirgok B.,Thiruvengadam A.,Pradhan S.,et al. Real-world emissions from modern heavy-duty vehicles: Sensitivity analysis of in-use emissions analysis methods[J],2021,252.
APA	Demirgok B..,Thiruvengadam A..,Pradhan S..,Besch M..,Thiruvengadam P..,...&Hu S..(2021).Real-world emissions from modern heavy-duty vehicles: Sensitivity analysis of in-use emissions analysis methods.ATMOSPHERIC ENVIRONMENT,252.
MLA	Demirgok B.,et al."Real-world emissions from modern heavy-duty vehicles: Sensitivity analysis of in-use emissions analysis methods".ATMOSPHERIC ENVIRONMENT 252(2021).