Development of Motorcycle Engine Starting System Simulation Considering Air-Fuel Ratio Control

Recently the response of the engine speed at starting has more importance than ever for quick start satisfying rider’s needs, as well as exhaust emissions. We have developed a simulation for studying engine and starter specifications, engine control algorithm and other engine control parameters. This system can be utilized to realize appropriate starting time by considering air-fuel ratio under various conditions.

This paper addresses what are taken account of in our method. Examples applying this to a conventional motorcycle engine are shown.