Engine starting apparatus

摘要

In an engine starting apparatus, together with a one-way clutch (18), a pinion (19) is pushed toward a ring gear (3) of an engine mounted in a vehicle. The one-way clutch has an idling torque smaller than a torque of the ring gear that tries to turn the pinion when the pinion is pushed to the ring gear. By control means (2), pinion pushing means (8) is enabled to operate when i) the revolution speed of the ring gear is larger than a revolution speed of the pinion and ii) a relative revolution speed between the revolution speed of the ring gear and the revolution speed of the pinion is a desired value.