Extension of Low Temperature Emission Test to Euro 6 Diesel Vehicles
The European Commission Regulations No 692/2008 and No 715/2007 set the regulatory framework for type-approval of motor vehicles with respect to emissions from light passenger and commercial vehicles (Euro 5/6). One of the applicable tests is the low temperature emission test (Type VI), which is conducted at sub-ambient temperature conditions (-7°C).
The low temperature emission test is currently required only for vehicles with positive ignition engines. However the Type VI test to diesel vehicles is under consideration, mainly because of the introduction of the new technologies in diesel engines in order to comply with the Euro5/6 emission standards, of which the efficiency in controlling emission may strongly depend on the ambient temperature. This is especially true for Exhaust Gas Recirculation (EGR) systems and after-treatment systems for Oxides of Nitrogen (NOx) that are deactivated or not operate in cold weather conditions, may result in elevated NOx emissions. The review should consider whether to extend the low temperature emission test to Euro 6 diesel vehicles and whether emission limit should be introduced in the future.
This report provides a picture of the low temperature emission performances of late technology diesel vehicles The main results of the experimental activity carried out at JRC to investigate the behaviour at low temperature of Euro 5/6 diesel passenger cars are summarised and discussed.
DARDIOTIS Christos;
MARTINI Giorgio;
MAROTTA Alessandro;
MANFREDI Urbano;
2012-11-15
Publications Office of the European Union
JRC72906
978-92-79-25610-3 (print),
978-92-79-25609-7,
1018-5593 (print),
1831-9424 (online),
EUR 25408 EN,
OP LB-NA-25408-EN-C (print),
OP LB-NA-25408-EN-N (online),
https://publications.jrc.ec.europa.eu/repository/handle/JRC72906,
10.2788/37684 (print),
10.2788/37683 (online),
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