气候变化领域集成服务门户(CCPortal): On-road detection of trucks with high NOx emissions from a patrol vehicle with on-board FTIR analyzer

CCPortal

DOI	10.1016/j.scitotenv.2020.139753
	On-road detection of trucks with high NOx emissions from a patrol vehicle with on-board FTIR analyzer
	Vojtisek-Lom M.; Arul Raj A.F.; Jindra P.; Macoun D.; Pechout M.
发表日期	2020
ISSN	489697
卷号	738
英文摘要	Technological advances in heavy-duty vehicle engines, allowing them to reach NOx emissions comparable to European diesel passenger cars per km driven, are being compromised by aftermarket defeat devices such as selective catalytic reduction (SCR) emulators, many of which can be quickly deactivated by the driver. In a pilot study, the prevalence of trucks with excess NOx emissions on Czech motorways was evaluated using an ordinary Customs Administration patrol vehicle temporarily fitted with a portable fast-response Fourier Transform Infra Red (FTIR) analyzer, acting as an impromptu chase vehicle. The Euro emissions category of the truck was provided from the motorway toll collection transponders. A total of 222 unique trucks were measured during a one-week pilot project. Of these, 66% were Euro VI, 25% were Euro V, and 9% were older categories. NO/CO2 ratios were calculated as a ratio of numerical integrals of the peaks of measured concentrations, as a ratio of maximum measured concentrations, and by linear regression, with the regression approach yielding most realistic results and mean calculated error of 0.2 g/kWh NO. At assumed 85% NO in NOx and 634 g/kWh mean CO2 emissions, the mean emissions of the cleanest 83% of Euro V and cleanest 63% of Euro VI trucks were within the corresponding NOx limit (2 g/kWh for Euro V, 0.46 g/kWh for Euro VI) multiplied by a factor of 1.5. Providing for some allowance for legitimate occurrences of high NOx emissions, about 10–15% of Euro V and about 10–25% of Euro VI trucks are believed to be excess emitters, with no SCR functionality on about 10–15% of Euro VI trucks. The portable FTIR, temporarily mounted on a law enforcement vehicle, can be readily used as a screening tool, identifying vehicles to be stopped for additional inspection, but also during roadside emissions inspections. © 2020 Elsevier B.V.
英文关键词	Chase vehicle; FTIR; High emitter; Nitrogen oxides; On-road emissions; SCR
scopus关键词	Automobiles; Fourier transform infrared spectroscopy; Nitrogen oxides; Selective catalytic reduction; Trucks; Diesel passenger cars; Fourier transform infra reds; FTIR analyzers; Heavy duty vehicles; Numerical integral; Patrol vehicles; Pilot projects; Technological advances; Military vehicles; carbon dioxide; nitrogen oxide; detection method; diesel engine; emission inventory; error analysis; FTIR spectroscopy; nitrogen oxides; pollution monitoring; traffic emission; trucking; Article; artifact; calculation; car; concentration (parameter); Czech Republic; diesel engine; exhaust gas; Fourier transform infrared spectroscopy; highway; human; measurement error; motor vehicle; pilot study; police; priority journal; registration; travel; truck; Czech Republic
来源期刊	Science of the Total Environment
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/176777
作者单位	Department of Automotive, Combustion Engine and Railway Engineering, Faculty of Mechanical Engineering, Czech Technical University of Prague, Technicka 4, Prague, 166 07, Czech Republic; Department of Vehicles and Engines, Faculty of Mechanical Engineering, Technical University of Liberec, Studentska 2, Liberec, 461 17, Czech Republic; Department of Vehicles and Ground Transport, Faculty of Engineering, Czech University of Life Sciences, Kamycka 127, Praha-Suchdol165 21, Czech Republic
推荐引用方式 GB/T 7714	Vojtisek-Lom M.,Arul Raj A.F.,Jindra P.,et al. On-road detection of trucks with high NOx emissions from a patrol vehicle with on-board FTIR analyzer[J],2020,738.
APA	Vojtisek-Lom M.,Arul Raj A.F.,Jindra P.,Macoun D.,&Pechout M..(2020).On-road detection of trucks with high NOx emissions from a patrol vehicle with on-board FTIR analyzer.Science of the Total Environment,738.
MLA	Vojtisek-Lom M.,et al."On-road detection of trucks with high NOx emissions from a patrol vehicle with on-board FTIR analyzer".Science of the Total Environment 738(2020).