Moody, A and Tate, J orcid.org/0000-0003-1646-6852 (2017) In Service CO2 and NOX Emissions of Euro 6/VI Cars, Light- and Heavy- dutygoods Vehicles in Real London driving: Taking the Road into the Laboratory. Journal of Earth Sciences and Geotechnical Engineering, 7 (1). pp. 51-62. ISSN 1792-9040
Abstract
Driving on-the-road has more frequent and prompt acceleration/decelerations than in the type-approval light-duty test conditions (NEDC), with Real Driving Emissions (RDE) of CO2 and NOX known to be considerably higher. Despite permissible limits of NOX emissions at type approval reducing significantly, in-service emissions from diesel vehicles have, in reality, not reduced at all through the Euro 1–5 / I–V emission standards. TfL commissioned a programme of laboratory testing to better understand the in-service emission performance of Euro 6/VI vehicles over the TfL London Drive Cycle (LDC). This cycle was constructed from instrumented car data making repeated circuits of a set route at different times of day. Twelve Euro 6 passenger cars were tested over the entire 140 kms of the LDC from a warm-start. Three HGVs were tested over the suburban sub-cycle (40kms) in laden and un-laden condition. NOX emissions from the petrol cars were at a low level and below, or at, their type approval limit of 0.06 g.km-1. Only one SCR equipped diesel car achieved NOX emissions close to their 0.08 g.km-1 type approval limit. NOX emissions from diesel cars with only LNT NOX controls were between 3 and 13 times higher than their type approval limit (conformity factors). A diesel supermini was emitting NOX at the same level as the fully laden 40T artic HGV tested.
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Copyright, Publisher and Additional Information: | © The Authors. This is an open access article under the terms of the Creative Commons Attribution License (CC-BY). | ||||
Keywords: | real driving emissions; RDE; CO2; NOx; Euro 6; Euro VI; laboratory setting | ||||
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Institution: | The University of Leeds | ||||
Academic Units: | The University of Leeds > Faculty of Environment (Leeds) > Institute for Transport Studies (Leeds) > ITS: Spatial Modelling and Dynamics (Leeds) | ||||
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Depositing User: | Symplectic Publications | ||||
Date Deposited: | 03 Feb 2017 12:20 | ||||
Last Modified: | 05 Oct 2017 16:09 | ||||
Published Version: | http://www.scienpress.com/journal_focus.asp?main_i... | ||||
Status: | Published | ||||
Publisher: | Scienpress | ||||
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