气候变化领域集成服务门户(CCPortal): Effect of oxidation temperature on oxidation reactivity and nanostructure of particulate matter from a China VI GDI vehicle

CCPortal

DOI	10.1016/j.atmosenv.2021.118461
	Effect of oxidation temperature on oxidation reactivity and nanostructure of particulate matter from a China VI GDI vehicle
	Hu Z.; Lu Z.; Zhang H.; Song B.; Quan Y.
发表日期	2021
ISSN	1352-2310
卷号	256
英文摘要	Modern Gasoline Direct Injection (GDI) vehicles offered higher power output, improved fuel economy and reduced CO2 emissions compared with port fuel injection (PFI) vehicles. However, the particle number emission of GDI is larger than that of PFI and also higher than diesel vehicles equipped with diesel particle filter (DPF). This research sampled particle matter (PM) emitted from a China VI vehicle over the Worldwide harmonized Light vehicles Test Cycle (WLTC). The results of particle size distribution showed that ultra-fine particles in diameter below 23 nm take up majority of particle emissions. While with the oxidation temperature rising, the peak diameter of emitted particles migrated to larger section. The effect of oxidation temperature including interlayer spacing, fractal dimension, fringe length and tortuosity have been analyzed by TEM. The value of nano structural parameters increases slightly with the temperature increasing. Besides, the impact of volatile components was considered into the micromorphology and microstructure parameters of primary particles. After eliminating volatile materials, there is no presence of hollow carbon particles and all the three parameters including interlayer spacing, fringe length and fringe tortuosity showed an overall decrease. Better understanding nano structural parameters of PM under different oxidation temperatures can provide information to explain the potential impacts of particle emissions on human health and environment and the regeneration process of gasoline particle filter (GPF). © 2021
关键词	GDI Nanostructure Oxidation reactivity Particle size distribution Volatile components
语种	英语
scopus关键词	Diesel engines; Direct injection; Fractal dimension; Fuel economy; Gasoline; Light transmission; Nanostructures; Oxidation; Particle size; Size distribution; Gasoline direct-injection; Interlayer spacings; Oxidation reactivity; Oxidation temperature; Particle emissions; Particle filter; Particle matter; Particles-size distributions; Port fuel injections; Volatile components; Particle size analysis; carbon nanoparticle; diesel fuel; gasoline; nanomaterial; volatile agent; chemical reaction; diameter; engine; nanoparticle; oxidation; particulate matter; temperature effect; Article; China; diesel engine; fractal analysis; kinetic parameters; motor vehicle; oxidation; particle size; particulate matter; priority journal; reaction temperature; transmission electron microscopy; 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/248394
作者单位	School of Automotive Studies, Tongji University, Shanghai, 201804, China; Shanghai Motor Vehicle Inspection Certification & Technology Innovation Center Co. Ltd, Shanghai, 201805, China
推荐引用方式 GB/T 7714	Hu Z.,Lu Z.,Zhang H.,et al. Effect of oxidation temperature on oxidation reactivity and nanostructure of particulate matter from a China VI GDI vehicle[J],2021,256.
APA	Hu Z.,Lu Z.,Zhang H.,Song B.,&Quan Y..(2021).Effect of oxidation temperature on oxidation reactivity and nanostructure of particulate matter from a China VI GDI vehicle.ATMOSPHERIC ENVIRONMENT,256.
MLA	Hu Z.,et al."Effect of oxidation temperature on oxidation reactivity and nanostructure of particulate matter from a China VI GDI vehicle".ATMOSPHERIC ENVIRONMENT 256(2021).