Method engine starting system and the engine start-up

Promptly restart during inertial rotation of the engine, and obtain the engine starting apparatus and an engine starting method that can be quietly carried out. Stop fuel injection into the engine by the occurrence of the engine automatic stop condition is automatically stopped engine, a subsequent engine starting device for restarting the engine with the passage of the engine restart conditions, coupled to a crankshaft of the engine a ring gear 11, and the starter motor 145 to rotate by energization, a pinion gear 144 for transmitting the rotation of the starter motor 145 to the ring gear 11, pinion gear moves to engage with the pinion gear 144 is moved to the ring gear 11 direction by energizing and parts, after the fulfillment of the engine restart conditions, and after start of movement of the pinion gear 144 by the pinion gear moving unit, that a resume fuel injection fuel injection control unit so as to burn at a predetermined compression cylinder occurs it is.