A High Energy Ignition System for EGR Combustion Engine (Second Report)

Abstract

Application of low pressure cooled EGR to suppress engine knock is increasing because of advantages of engine downsizing, high compression ratio. Purpose of this study is to develop ignition system to extend EGR limit. This paper summarizes the experimental result obtained by using reinforce conventional ignition coil. The experimental results show knock suppression at high load by increasing EGR limit, EGR limit extension at these high load conditions is achieved by using reinforce conventional ignition coil. Furthermore, increased fuel economy improvement benefit using knock suppression enabled by enhanced ignition system exceeded increase of electric power consumption.