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R ainer Vogt , Volker Scheer, Roberto Casati Ford Forschungszentrum Aachen GmbH

Comparison of PM exhaust emission measurements: C hassis dynamometer versus on-road chasing. R ainer Vogt , Volker Scheer, Roberto Casati Ford Forschungszentrum Aachen GmbH. Objectives.

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R ainer Vogt , Volker Scheer, Roberto Casati Ford Forschungszentrum Aachen GmbH

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  1. Comparison of PM exhaust emission measurements: Chassis dynamometer versus on-road chasing Rainer Vogt, Volker Scheer, Roberto Casati Ford Forschungszentrum Aachen GmbH FFA contribution to PARTICULATES

  2. Objectives • To measure the PM emissions of the VW TDI by chasing the exhaustplume with the Ford Mobile Laboratory (FML) at three constant speedsand fixed distance on a test trace • To measure the PM emissions of the VW TDI with the PARTICULATES dilution system at the FFA chassis dynamometer at the same constantspeeds and during the NEDC • To compare the results obtained with the PARTICULATES dilutionsystem with real-world dilution measured during chasing the exhaust plume with aspecial focus on nucleation particles FFA contribution to PARTICULATES

  3. On-road chasing of exhaust plume Test vehicle: 1.8 l Diesel speed, fuel consumption exhaust temperatures Ford Mobile Lab: SMPS, CPC, NOx, CO, T and RH Test track: high speed oval, 4 km/lap FFA contribution to PARTICULATES

  4. In-let for on-road sampling FFA contribution to PARTICULATES

  5. Exhaust chasing of diesel vehicle at different speeds FFA contribution to PARTICULATES

  6. PM size distribution during chasing atdifferent speeds: 360 ppm S fuel FFA contribution to PARTICULATES

  7. Time evolution of nucleation mode particles Diesel car, 320 ppm S fuel, T=17°C, RH=57% Dp / nm FFA contribution to PARTICULATES

  8. Dynanometer exhaust dilution & sampling FFA contribution to PARTICULATES

  9. Principle of the Matter-Diluter FFA contribution to PARTICULATES

  10. Dynamometer at different speeds: 350 ppmS FFA contribution to PARTICULATES

  11. Deliverables · • Emission factors for particle number and size as measured by the PARTICULATES sampling system at three constant speeds and during the NEDC • Emission factors for particle number and size as measured during exhaust chasing on a test track with the same vehicleand the same constant speeds • Comparison of the chassis dynamometer results with the results from the exhaust chase experiments to provide the link to real atmospheric dilution conditions FFA contribution to PARTICULATES

  12. Schedule Dec. 2002-Feb.2003 Preparation of chasing and dyno measurements March 2003 Chasing on test track and chassis dynanometer April-June 2003 Data evaluation and reporting FFA contribution to PARTICULATES

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