气候变化领域集成服务门户(CCPortal): Minimizing secondary pollutant formation through identification of most influential volatile emissions in gasoline exhausts: Impact of the vehicle powertrain technology

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DOI	10.1016/j.atmosenv.2020.117394
	Minimizing secondary pollutant formation through identification of most influential volatile emissions in gasoline exhausts: Impact of the vehicle powertrain technology
	Mehsein K.; Norsic C.; Chaillou C.; Nicolle A.
发表日期	2020
ISSN	1352-2310
卷号	226
英文摘要	Despite the growing share of hybrid vehicles in worldwide vehicle fleet, the impact of battery/engine switch on secondary pollutant precursors formation remains poorly understood. We herein identify the species to be removed primarily from the exhaust of hybrid vehicles to minimize secondary pollutants formation. Pollutants from a conventional (thermal) and a hybrid vehicle are herein evaluated in a chassis dynamometer bench by using two widely used driving cycles, WLTC and FTP75. Hybrid vehicle exhibits the lowest regulated emissions during all the different tests, except for NOx. The results reveal that low and cold start phases of the cycles contribute mainly to the ozone potential, although methane, butadiene and formaldehyde can be emitted at the tailpipe all along the driving cycle. We evidence for the first time a significant contribution of gas-phase reactions to butadiene and methane production inside the exhaust pipe, especially during warm restarts and accelerations. This study indicates that pollutant traps should target primarily monoaromatics which contribute typically to 40% of photochemical ozone creation and 50% to Secondary Organic Aerosols (SOA). However, the contribution of alkanes to ozone differs markedly for the hybrid vehicle, reflecting a different share of ozone production paths with respect to conventional vehicles. © 2020 Elsevier Ltd
英文关键词	Cold; Hybrid vehicles; Ozone potential; Secondary aerosol potential; Warm start
语种	英语
scopus关键词	Aerosols; Butadiene; Chemical reactions; Dynamometers; Exhaust systems (engine); Fleet operations; Hybrid vehicles; Methane; Ozone; Phase interfaces; Chassis dynamometers; Cold; Gas-phase reactions; Photochemical ozone; Regulated emissions; Secondary aerosols; Secondary organic aerosols; Warm start; Air pollution; 1,3 butadiene; alkane; carbon monoxide; formaldehyde; gasoline; methane; nitric oxide; ozone; volatile organic compound; aerosol; engine; equipment component; formaldehyde; identification method; methane; ozone; photochemistry; air pollutant; Article; car; combustion; comparative study; controlled study; environmental temperature; exhaust gas; gas; molecular interaction; oxidation kinetics; photochemistry; priority journal; reduction (chemistry); secondary organic aerosol; solvent extraction
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/129574
作者单位	EMC France, 4 Allée de la rhubarbe, Achères, 78260, France; Aramco Fuel Research Center, Aramco Overseas Company, 232 Avenue Bonaparte Rueil-Malmaison92852, France
推荐引用方式 GB/T 7714	Mehsein K.,Norsic C.,Chaillou C.,et al. Minimizing secondary pollutant formation through identification of most influential volatile emissions in gasoline exhausts: Impact of the vehicle powertrain technology[J],2020,226.
APA	Mehsein K.,Norsic C.,Chaillou C.,&Nicolle A..(2020).Minimizing secondary pollutant formation through identification of most influential volatile emissions in gasoline exhausts: Impact of the vehicle powertrain technology.Atmospheric Environment,226.
MLA	Mehsein K.,et al."Minimizing secondary pollutant formation through identification of most influential volatile emissions in gasoline exhausts: Impact of the vehicle powertrain technology".Atmospheric Environment 226(2020).