气候变化领域集成服务门户(CCPortal): Characterizing start emissions of gasoline vehicles and the seasonal, diurnal and spatial variabilities in China

CCPortal

DOI	10.1016/j.atmosenv.2020.118040
	Characterizing start emissions of gasoline vehicles and the seasonal, diurnal and spatial variabilities in China
	Wen Y.; Zhang S.; He L.; Yang S.; Wu X.; Wu Y.
发表日期	2021
ISSN	1352-2310
卷号	245
英文摘要	Start emissions from gasoline light-duty passenger vehicles (LDPVs) remain an important source of emissions modeling. This study measured start emissions of gaseous pollutants and solid particle number based on dynamometer tests for a fleet of 111 LDPVs in China, and selected a portion of samples to be tested under low temperature or shorter soak conditions. The cold-start phase, defined to follow soak durations of more than 6 h, typically lasts less than 200 s but accounts for a high proportion of total tailpipe emissions under the regulatory cycle (e.g., ~60% for China 6 CO emissions). Low temperature predominantly increases start emissions rather than hot-running emissions, and the increase ratios vary by pollutant and vehicle technology. Metrological data and soak duration profiles informed by a large sample of LDPVs were used to quantify the seasonal, diurnal and spatial variabilities of LDPV emissions across China. One notable case indicates that tailpipe THC emissions in January could be 283% higher than those in July for the fleet in Beijing, and the emissions peak in the morning rush hour during a day due to long overnight soak durations. This study provides a comprehensive dataset and useful tools for addressing the seasonal, diurnal and spatial variations in tailpipe emissions of gasoline vehicles in China, and has the potential to improve future emission inventories and air quality simulations. © 2020 Elsevier Ltd
关键词	Cold-start emissions Dynamometer test Emission model Low temperature Soak time
语种	英语
scopus关键词	Air quality; Fog; Light weight vehicles; Temperature; Air quality simulation; Emission inventories; Gaseous pollutants; Light duty passenger vehicles; Spatial variability; Spatial variations; Tailpipe emission; Vehicle technology; Gasoline; gasoline; air quality; data set; diurnal variation; low temperature; spatial analysis; spatial variation; traffic emission; air pollutant; air quality; Article; China; circadian rhythm; controlled study; environmental temperature; exhaust gas; low temperature; motor vehicle; priority journal; quantitative analysis; seasonal variation; simulation; spatial analysis; Beijing [China]; China
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/248742
作者单位	School of Environment, State Key Joint Laboratory of Environment Simulation and Pollution Control, Tsinghua University, Beijing, 100084, China; State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex, Beijing, 100084, China
推荐引用方式 GB/T 7714	Wen Y.,Zhang S.,He L.,et al. Characterizing start emissions of gasoline vehicles and the seasonal, diurnal and spatial variabilities in China[J],2021,245.
APA	Wen Y.,Zhang S.,He L.,Yang S.,Wu X.,&Wu Y..(2021).Characterizing start emissions of gasoline vehicles and the seasonal, diurnal and spatial variabilities in China.ATMOSPHERIC ENVIRONMENT,245.
MLA	Wen Y.,et al."Characterizing start emissions of gasoline vehicles and the seasonal, diurnal and spatial variabilities in China".ATMOSPHERIC ENVIRONMENT 245(2021).