Morphology Analysis of Gasoline Engine Exhaust Particulates via Transmission Electron Microscopy

Abstract

The objective of this study is to investigate the morphological properties of Particulate Matter(PM) flowing into the post-processing devices of gasoline engines under various engine operating conditions and exhaust system configurations. The effects of conditions and settings including timings of fuel injection and ignition, load variation, Turbo/Charger(T/C), catalysts and Gasoline Particulate Filter(GPF) on the morphology of exhaust PM was examined. The results were obtained via thermophoretic direct sampling of exhaust PM using a water-cooled sampler and Transmission Electron Microscope (TEM) observation and analysis.