Variation of Particles in the Exhaust Plume of Gasoline Direct Injection Vehicles Based on a Multipoint Sampling System: Concentrations, Components, and Numbers
Abstract:To grasp the primary particulate
matter (PM) emissions and the
corresponding secondary evolution of gasoline direct injection (GDI)
vehicles, an innovative combination system of chassis dynamometer
and multipoint sampling (up to 4.5 m) was constructed. The exhaust
plumes in the area near the exhaust gas discharge outlet were successfully
captured. There were intense secondary formation processes. With the
increase of dilution factors, the PM mass concentrations and particle
number emissions of secondary partic… Show more
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