dc.contributor.author | Söderena, Petri | |
dc.contributor.author | Laurikko, Juhani | |
dc.contributor.author | Weber, Christian | |
dc.contributor.author | Tilli, Aki | |
dc.contributor.author | Kuikka, Keijo | |
dc.contributor.author | Kousa, Anu | |
dc.contributor.author | Väkevä, O. | |
dc.contributor.author | Venho, Antti | |
dc.contributor.author | Haaparanta, Suvi | |
dc.contributor.author | Nuottimäki, Jukka | |
dc.coverage.spatial | Europe | en_US |
dc.date.accessioned | 2021-08-02T10:33:46Z | |
dc.date.available | 2021-08-02T10:33:46Z | |
dc.date.created | 2020-08-21T13:23:50Z | |
dc.date.issued | 2020-07-23 | |
dc.identifier.citation | Science of the Total Environment. 2020, 746 (December), 1-11. | en_US |
dc.identifier.issn | 0048-9697 | |
dc.identifier.uri | https://hdl.handle.net/11250/2765815 | |
dc.description.abstract | In this study, the NOx emissions of four Euro 6 diesel passenger cars ranging from Euro 6 b to Euro 6 d-TEMP in different ambient conditions and driving routes were investigated with a Portable Emissions Measurement System (PEMS) and continuous NOx concentration monitoring device. A model was also generated for translating NOx concentration values into a gram basis. The results suggest that there is a marked difference in NOx emissions based on the Euro 6 step for the car is type approved. The study showed that the conformity factor for NOx emissions on a route in a city environment (“City route”) changed from 0.65 to 5.2 depending on the Euro 6 step and car. Surprisingly, a Euro 6 b car equipped with Selective Catalytic Reduction SCR system and updated engine control unit (ECU) software for lower tailpipe NOx emissions provided lower average NOx emissions than a Euro 6 d-TEMP diesel car equipped with dual lean-NOx traps. Results for the City route also showed that the road infrastructure (crossroads and speed limitations) can have a noticeable effect on promoting driving that leads to higher NOx emissions even with a Euro 6 d-TEMP car. Estimations of NOx emissions with modelling based on continuous NOx concentration monitoring suggested that Euro 6 b diesel cars can provide NOx emissions close to the current RDE legislation. In addition, the modelling suggested that the Euro 6 b car with updated ECU software and the Euro 6 d-TEMP diesel car are capable of extremely low daily average NOx emissions, even close to 20 mg/km, in normal daily usage. Nevertheless, the monitoring results and model also suggest that cold ambient temperature has a high effect on the NOx emissions reduction performance of these vehicles, occasionally increasing their daily average emissions to as high as 900 mg/km. | en_US |
dc.language.iso | eng | en_US |
dc.publisher | Elsevier | en_US |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/deed.no | * |
dc.title | Monitoring Euro 6 diesel passenger cars NOx emissions for one year in various ambient conditions with PEMS and NOx sensors | en_US |
dc.type | Peer reviewed | en_US |
dc.type | Journal article | en_US |
dc.rights.holder | © 2020 Elsevier B.V. All rights reserved. | en_US |
dc.source.articlenumber | 140971 | en_US |
dc.description.version | acceptedVersion | en_US |
cristin.ispublished | true | |
cristin.fulltext | postprint | |
cristin.qualitycode | 2 | |
dc.identifier.doi | 10.1016/j.scitotenv.2020.140971 | |
dc.identifier.cristin | 1824492 | |
dc.source.journal | Science of the Total Environment | en_US |
dc.source.volume | 746 | en_US |
dc.source.issue | December | en_US |
dc.source.pagenumber | 1-11 | en_US |