PMP Inter-Laboratory Correlation Exercise Report on Part 2: JRC Tests in May `05

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This document reports on the results of the second part of the testing performed during the PMP inter-laboratory exercise - 11 to 31 May 2005 - conducted at the Vehicles Emissions Laboratory (VELA) in the Emissions and Health Unit of the European Commission’s Joint Research Centre (JRC-Ispra). This report presents results of the work undertaken on three different vehicles complying with the EURO4 limits: 2.0 HDi diesel car equipped with a Diesel Particulate Filter (DPF) - Golden Vehicle -, 1.4 gasoline Multi Point Injection (MPI) and 1.6 FSI Gasoline Direct Injection (GDI). Most of the tests complied with all the requirements of the document UN-GRPE PMP Phase 3. Inter-laboratory Correlation Exercise: Framework and Laboratory Guide (February 2005, Andersson et al.). The measuring included both filter based particulate mass measurements and real-time particle number measurements performed in parallel on light-duty vehicles under transient conditions on a chassis dynamometer. Two different sampling and measurements particle number system were used: Golden Particle Measurements System (GPMS) and Alternative System (ALT_system).The driving cycle used was the European driving cycle (NEDC).

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