CONTROL SYSTEM AND CONTROL METHOD FOR HYBRID VEHICLE

摘要

Provided are a hybrid vehicle control device and control method that suitably determine the possibility of a gear range alteration on the basis of a predicted amount of charging, and thereby can increase vehicle fuel efficiency by obtaining a greater amount of charging. A first amount of charging is estimated that is the amount of charging of an electricity storage unit when performing regeneration for a predetermined regeneration time by an electric motor (4) in the state of maintaining the gear range of a stepped transmission. Also, a second amount of charging is estimated that is the amount of charging of the electricity storage unit when regeneration by the electric motor (4) is performed until the regeneration time has elapsed and the gear range is altered during the regeneration time to a target gear range. Then, it is determined whether or not to maintain the gear range or to alter to the target gear range on the basis of the estimated first and second amounts of charging.