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Sci Total Environ

Title:		Variability in real-world emissions and fuel consumption by diesel construction vehicles and policy implications
Author(s):		Li C; Cui M; Zheng J; Chen Y; Liu J; Ou J; Tang M; Sha Q; Yu F; Liao S; Zhu M; Wang J; Yao N; Li C;
Address:		"Research Center for Eco-Environmental Engineering, Dongguan University of Technology, Dongguan 523830, China. College of Environmental Science and Engineering, Yangzhou University, Yangzhou 225009, China. Institute for Environmental and Climate Research, Jinan University, Guangzhou 511443, China. Electronic address: zhengjunyu_work@hotmail.com. Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP(3)), Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China. Electronic address: yjchenfd@fudan.edu.cn. Institute for Environmental and Climate Research, Jinan University, Guangzhou 511443, China. Faculty of Social & Behavioural Sciences, Utrecht University, Utrecht 3584 CH, Netherlands. Research Center for Eco-Environmental Engineering, Dongguan University of Technology, Dongguan 523830, China. Electronic address: licpbit@hotmail.com"
Journal Title:		Sci Total Environ
Year:		2021
Volume:		20210422
Issue:
Page Number:		147256 -
DOI:		10.1016/j.scitotenv.2021.147256
ISSN/ISBN:		1879-1026 (Electronic) 0048-9697 (Linking)
Abstract:		"Strategically reducing the emission of non-road mobile source especially diesel construction vehicle (DCV) has a large potential in improving air quality and has attracted much scientific and public attention in recent years around the world. In this study, we explored real-world fuel consumption rate and gaseous emissions factors for multiple pollutants of three typical DCVs in China. The sampling campaign considered the operation mode, cumulative operation hour, emission standard stage and engine power. Results show that the accumulated fuel consumption per hour of vehicle weight for working, load-free moving and idling modes was 0.3, 0.2 and 0.1 kg/h.tons, respectively. The fuel-based NOx emission factor exhibited a bimodal distribution at 27 and 41 g/kg. The fuel-based emission factors for volatile organic compounds (VOCs) were in the range of 0.8 to 2.6 g/kg, where alkene and alkane were the dominant components (>80%), i.e., ethylene, acetylene, propylene, and isobutane. We observed that the ratio of toluene and benzene concentration (T/B) (1.4 +/- 1.3) differed from other key emission sources and may be used as the specific indicator of DCV emission exhaust. Our estimates suggest that in 2017 the fuel consumption and NOx emissions of DCV emission accounted for 22-28% of non-road mobile sources in China; NO(X) emissions were 2.7 times higher than those in 2006, and it is forecasted that NOx emissions would reduce by 23% between 2017 and 2025 with the implementation of stage IV and the strict supervision policy. The comprehensive dataset on DCV emissions will either guide the government to establish precise and effective policies to regulate the non-road mobile source or significantly improve our understanding of source apportionment of atmospheric NOx and VOCs, both of which are key precursors of haze and ozone pollution"
Keywords:		Diesel construction vehicle NOx Non-road mobile sources Volatile organic compound;
Notes:		"PubMed-not-MEDLINELi, Cheng Cui, Min Zheng, Junyu Chen, Yingjun Liu, Junwen Ou, Jiamin Tang, Mingshuang Sha, Qinge Yu, Fei Liao, Songdi Zhu, Manni Wang, Junchi Yao, Nan Li, Changping eng Netherlands 2021/05/14 Sci Total Environ. 2021 Sep 10; 786:147256. doi: 10.1016/j.scitotenv.2021.147256. Epub 2021 Apr 22"