Influence of Ash-Soot Interactions on the Reactivity of Soot from a Gasoline Direct Injection Engine.

ABSTRACT: Gasoline particulate filters (GPF) are being utilized in certain markets on gasoline direct injection (GDI) vehicles to reduce tailpipe particulate emissions as required by particle number regulations. GPF filtration efficiency is dependent on soot build-up within the filter. Since soot oxidizes within the GPF during normal vehicle operation, an understanding of soot reactivity is important for optimizing aftertreatment architecture and engine calibration. Past work has indicated that gasoline soot reactivity may depend on levels of metallic ash species. In this work, carbonaceous particulate matter from a GDI engine are evaluated from engine operation at a consistent speed and load but with different levels of fuel injection pressures and timings to vary the relative ash to soot ratio. So

SUBMITTER: Easter J 

PROVIDER: S-EPMC7707118 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature