Restart standby control method and restart standby control device for internal combustion engine

摘要

The internal combustion engine (1) includes a belt-type starter generator (4) and performs idle stop when the vehicle stops. In the process of lowering the engine rotation speed with a fuel cut for stopping the vehicle, the starter generator (4) needs to be spared in order to suppress a decrease in the responsiveness of the restart due to the slack of the belt (9). Perform power running. The belt tension at the time of deceleration changes periodically between a period in which the tension is relatively high and a period in which the tension is relatively low microscopically due to the pulsation of the engine rotation speed. Since the belt (9) does not slack during the high tension period, the reserve powering torque is applied only during the low tension period.