Real-world gaseous and particulate emissions from Euro IV to VI medium duty diesel trucks.

Autor: Papadopoulos G; Emisia S.A., 21 Antoni Tritsi str., P.O. Box 8138, GR 57001 Thessaloniki, Greece. Electronic address: giorgos.p@emisia.com., Ntziachristos L; Department of Mechanical Engineering, Aristotle University of Thessaloniki, P.O. Box 483, GR 54124 Thessaloniki, Greece. Electronic address: leon@auth.gr., Tziourtzioumis C; Emisia S.A., 21 Antoni Tritsi str., P.O. Box 8138, GR 57001 Thessaloniki, Greece. Electronic address: christos.t@emisia.com., Keramydas C; Department of Supply Chain Management, International Hellenic University, GR 60100 Katerini, Greece. Electronic address: keramidasx@ihu.gr., Lo TS; Environmental Protection Department, Hong Kong SAR Government, Hong Kong. Electronic address: eddielo@epd.gov.hk., Ng KL; Environmental Protection Department, Hong Kong SAR Government, Hong Kong. Electronic address: kwoklamng@epd.gov.hk., Wong HA; Environmental Protection Department, Hong Kong SAR Government, Hong Kong. Electronic address: ansonwong@epd.gov.hk., Wong CK; Environmental Protection Department, Hong Kong SAR Government, Hong Kong. Electronic address: carolw@epd.gov.hk.
Jazyk: angličtina
Zdroj: The Science of the total environment [Sci Total Environ] 2020 Aug 20; Vol. 731, pp. 139137. Date of Electronic Publication: 2020 May 03.
DOI: 10.1016/j.scitotenv.2020.139137
Abstrakt: This study offers emission factors for earlier and late technology medium duty diesel particulate filter (DPF) -equipped trucks, operating on real-world conditions. The analysis includes levels of nitrous oxide (N 2 O) emissions as well as the impacts of DPF regenerations on emission levels. The real-driving gaseous and particulate emissions, as well as fuel consumption of 14 Euro IV, Euro V, and Euro VI medium duty diesel trucks were analysed and the efficiency of different emission control technologies were assessed. Measurements were conducted using portable emission measurement systems (PEMS) over a wide range of driving and operating conditions. Distance-based integration of emission rates over 500 m sections was considered for statistical analysis, providing a large dataset of emission factors to be used for network link-based traffic and emissions modelling. In terms of emissions performance, nitrogen oxides (NO x ) levels were in general above the corresponding Euro standard limits, while carbon monoxide (CO), total hydrocarbons (THC) and particulate matter (PM) levels were within limits. Selective catalytic reduction (SCR) -equipped Euro V vehicles were seen to emit more than their non-SCR-equipped counterparts. NO x and fuel consumption were positively correlated with road gradient over the -6% to 6% gradient range. The emission levels of ammonia (NH 3 ) were measured significantly lower than the respective Euro VI provisions for heavy duty engines, while the N 2 O levels were found to contribute approximately 1% to the respective total greenhouse gases levels. DPF regeneration events in real world seem to have a measurable impact mostly on THC and PM emissions, increasing baseline levels by 8.1% and 29%, respectively, for Euro VI vehicles.
Competing Interests: Declaration of competing interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. The contents of this paper are solely the responsibility of the authors and do not necessarily represent official views of the Hong Kong SAR Government.
(Copyright © 2020 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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