Title
A European Regulatory Perspective towards a Euro 7 Proposal
Author
Samaras, Z.C.
Kontses, A.
Dimaratos, A.
Kontses, D.
Balazs, A.
Hausberger, S.
Ntziachristos, L.
Andersson, J.
Ligterink, N.L.
Aakko-Saksa, P.
Dilara, P.
Publication year
2022
Abstract
The implementation of emission standards has brought significant reductions in vehicle emissions in the EU, but road transport is still a major source of air pollu tion. Future emission standards will aim at making road vehicles as clean as possible under a wide range of driving conditions and throughout their complete lifetime. The current paper presents the methodology followed by the Consortium for ultra LOw Vehicle Emissions (CLOVE) to support the preparation of the Euro 7 proposal. As a first step, the emission performance of the latest technology vehicles under various driving conditions was evaluated. Towards this direction, an emissions database was developed, containing data from a wide range of tests, both within and beyond the current RDE boundaries. The results revealed that harsh accelerations, extreme ambient tempera tures, very short trips (particularly at urban conditions), DPF regeneration and uphill driving, or combination of those conditions, can result to high emissions. Next, suitable tech nology packages to address such high emissions were defined and evaluated, using simulation models. On top of this analysis, additional elements were assessed, namely on-board emissions monitoring, additional species to be regulated and instrumentation for future on-road emission testing. The overall analysis revealed that existing state-of-the-art emission control technologies can achieve very low emission levels, but not under all driving conditions. Thus, additional improvements and potential new technologies are needed to bring ultra-low emissions. These technologies include larger exhaust aftertreatment devices, optimized engine and after treatment thermal management (mainly during cold-start) and further penetration of electrification. Particularly the latter is heavily enforced by the CO2-related measures and can strongly support the limitation of pollutant emissions, as well
Subject
Traffic
Mobility & Logistics
Urbanisation
To reference this document use:
http://resolver.tudelft.nl/uuid:ddb062fb-5963-485f-9be3-78ad4612bc14
TNO identifier
973065
Publisher
SAE International
Source
SAE Technical Paper. CO2 Reduction for Transportation Systems Conference, 1-14
Document type
article