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Development of an Improved Gravimetric Method for the Mass Measurement of Diesel Exhaust Gas Particles
ISSN: 0148-7191, e-ISSN: 2688-3627
Published May 11, 2005 by SAE International in United States
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The Particulate Measurement Programme (PMP) works on the identification of a method to replace or complete the existing particle mass (PM) measurement method. The French PMP subgroup, composed by IFP, PSA Peugeot-Citroën, Renault and UTAC, proposes an improved gravimetric method for the measurement of emitted particles, and conducted an inter-laboratory test to evaluate its performances. The technical programme is based on tests carried out on a Euro3 Diesel passenger car (PC), tested on the New European Driving Cycle (NEDC). To achieve low particulate matter (PM) emissions, the EGR is disconnected and a paraffinic fuel is used. The regulated pollutants are also measured. It is shown that the multiple filter weighing and a 0.1 μg balance instead of a 1 μg one are not necessary, as the first weighing and the 1 μg balance performances are satisfactory for type-approval purposes. The use of one filter for the entire NEDC and the decrease of flow through the tunnel from 12 to 9 m3/min increases the collected PM mass, without influencing the measurement of regulated pollutants. The collected PM mass is around 0.34-0.5 mg with satisfactory levels of repeatability and reproducibility. These results show that the proposed gravimetric method can measure with good precision low PM emissions, at least as low as 8 mg/km, with no change on the existing facilities and without supplementary cost, investment or staff training on new instruments.
CitationZervas, E., Dorlène, P., Forti, L., Perrin, C. et al., "Development of an Improved Gravimetric Method for the Mass Measurement of Diesel Exhaust Gas Particles," SAE Technical Paper 2005-01-2145, 2005, https://doi.org/10.4271/2005-01-2145.
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