Experimental Research on the Pollutant Emission Characteristic of In-Use Gasoline Vehicle by ASM

Abstract

About 17,000 gasoline vehicles were tested by an acceleration simulation mode (ASM) inspection. The pollutant emission data is compared and analyzed in this paper. Result shows that the pass rate of vehicle ASM emission inspection fell from 90% to 63% and vehicle emission deteriorates rapidly with vehicle age when the vehicle age over 6 years. The technics and technology of vehicle engine, the different engine ECU management styles also have great effects on the vehicle emissions.