CONTROL DEVICE AND CONTROL METHOD FOR ENGINE, ENGINE START DEVICE, AND VEHICLE

An engine (100) is driven by a starter (200) including a pinion gear (260) that can be engaged with a ring gear (110) coupled to a crankshaft (111); an actuator (232) causing, in a driven state, the pinion gear (260) to be moved to a position where the pinion gear (260) is engaged with the ring gear (110); and a motor (220) causing the pinion gear (260) to be rotated. The engine (100) is provided with a rotation angle sensor (115) for detecting rotation of the crankshaft (111). ECU (300) detects the crank angle of the crankshaft (111) based on a signal from the rotation angle sensor (115) after the actuator (232) is driven and the motor (220) is driven.