DOI: 10.1016/j.atmosenv.2017.09.007
Scopus记录号: 2-s2.0-85029389674
论文题名: Dilution effects on ultrafine particle emissions from Euro 5 and Euro 6 diesel and gasoline vehicles
作者: Louis C ; , Liu Y ; , Martinet S ; , D'Anna B ; , Valiente A ; M ; , Boreave A ; , R'Mili B ; , Tassel P ; , Perret P ; , André M
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2017
卷: 169 起始页码: 80
结束页码: 88
语种: 英语
英文关键词: Coagulation
; Condensation
; CVS
; Dilution
; Gasoline and diesel emissions
; Nucleation
; Tailpipe
; Temperature
; Ultrafine particle
Scopus关键词: Coagulation
; Condensation
; Dilution
; Direct injection
; Dynamometers
; Light transmission
; Nucleation
; Particle size
; Particle size analysis
; Size distribution
; Temperature
; Vehicles
; Chassis dynamometers
; Constant volume sampling
; Diesel emission
; Particle concentrations
; Particle measurement
; Particle number concentration
; Tailpipe
; Ultrafine particle
; Gasoline
; gasoline
; aerosol
; coagulation
; concentration (composition)
; condensation
; dilution
; motorway
; particle size
; quantitative analysis
; size distribution
; traffic emission
; aerosol
; analytic method
; Article
; clinical assessment
; comparative study
; concentration process
; controlled study
; diesel engine
; dilution
; dynamometry
; environmental impact
; exhaust gas
; highway
; limit of quantitation
; measurement accuracy
; motor vehicle
; particle size
; priority journal
; temperature
; temperature sensitivity
; ultrafine particle emission
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: Dilution and temperature used during sampling of vehicle exhaust can modify particle number concentration and size distribution. Two experiments were performed on a chassis dynamometer to assess exhaust dilution and temperature on particle number and particle size distribution for Euro 5 and Euro 6 vehicles. In the first experiment, the effects of dilution (ratio from 8 to 4 000) and temperature (ranging from 50 °C to 150 °C) on particle quantification were investigated directly from tailpipe for a diesel and a gasoline Euro 5 vehicles. In the second experiment, particle emissions from Euro 6 diesel and gasoline vehicles directly sampled from the tailpipe were compared to the constant volume sampling (CVS) measurements under similar sampling conditions. Low primary dilutions (3–5) induced an increase in particle number concentration by a factor of 2 compared to high primary dilutions (12–20). Low dilution temperatures (50 °C) induced 1.4–3 times higher particle number concentration than high dilution temperatures (150 °C). For the Euro 6 gasoline vehicle with direct injection, constant volume sampling (CVS) particle number concentrations were higher than after the tailpipe by a factor of 6, 80 and 22 for Artemis urban, road and motorway, respectively. For the same vehicle, particle size distribution measured after the tailpipe was centred on 10 nm, and particles were smaller than the ones measured after CVS that was centred between 50 nm and 70 nm. The high particle concentration (≈106 #/cm3) and the growth of diameter, measured in the CVS, highlighted aerosol transformations, such as nucleation, condensation and coagulation occurring in the sampling system and this might have biased the particle measurements. © 2017 Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82446
Appears in Collections: 气候变化事实与影响
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作者单位: Univ Lyon, IFSTTAR, AME, LTE, Lyon, France; French Environment and Energy Management Agency, ADEME, Angers, France; IRCELYON, UMR 5256 CNRS, Université de Lyon, Villeurbanne, France
Recommended Citation:
Louis C,, Liu Y,, Martinet S,et al. Dilution effects on ultrafine particle emissions from Euro 5 and Euro 6 diesel and gasoline vehicles[J]. Atmospheric Environment,2017-01-01,169