During start-up of an engine, an engine unit is controlled to perform a reverse rotation start-up operation. In the reverse rotation start-up operation, a fuel-air mixture is introduced into a combustion chamber while a crankshaft is rotated in a reverse d...

The engine has a locking device (2) that is brought into engagement with a crankshaft during the leakage of the engine. The device has contact and holding units (3, 4), in which the contact unit is attached to the holding unit in a movable manner, such tha...

The invention allows an accurate positioning to obtain a large inertia torque at starting. Especially, it prevents retrogradation that may occur when rotating an engine in the reverse direction by a motor and shutting down for positioning. [0002] At starti...