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Repeatability of Fine Particle Measurement of Diesel and Gasoline Vehicles Exhaust Gas
ISSN: 0148-7191, e-ISSN: 2688-3627
Published June 08, 2004 by SAE International in United States
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Four Diesel vehicles and two gasoline ones are used to determine the repeatability of the particle number and size measurements. Two analytical techniques are used: Scanning Mobility Particle Sizer (SMPS) and Electrical Low Pressure Impactor (ELPI). The influence of technology (Euro2 and Euro3, Diesel and gasoline vehicles, Diesel Particulate Filter (DPF), Gasoline Direct Injection (GDI)) and speed on the particle number and size is presented in the case of steady speeds and the European Driving Cycle (EDC). The repeatability of these measurements is determined at the entire particle distribution. The global 1.96*Standard Deviation (SD) of the median diameter, determined by SMPS, is 8 nm. The median diameter is difficult to be determined in several cases due to the flat profiles of the emitted particles. The global 1.96*Relative Standard Deviation (RSD) of the particle number presents a U-like curve, with a minimum value (55-57%) at about 100 nm. These values can reach the 180% (ELPI) and 280% (SMPS) at the extremes of this curve.
CitationZervas, E., Dorlhène, P., Daviau, R., and Dionnet, B., "Repeatability of Fine Particle Measurement of Diesel and Gasoline Vehicles Exhaust Gas," SAE Technical Paper 2004-01-1983, 2004, https://doi.org/10.4271/2004-01-1983.
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