Abstract
New combustion strategies with EGR are recently applied for the purpose of not only reducing pumping loss but also improving anti-knocking and compression ratio in gasoline engines. This paper describes effects of ignition coil specifications (current, duration and energy) on combustion performance of a spark ignition engine. To clarify better parameters’ settings which affect stoichometric combustion with EGR, a robust design, named Taguchi Methods was used as a sensitivity analysis. With suitable parameters selected, combustion stability under higher EGR was investigated to determine requirements of ignition specifications for new combustion strategies. The results showed that multiple-ignition contributes to improve the limitation of EGR rate.
