Patent ID: 8370034

Claim:
A control device for a vehicle power transmission device, the vehicle power transmission device including an electrical differential portion that includes a differential mechanism and a first electric motor and in which a differential state between rotation speed of an input shaft and rotation speed of an output shaft is controlled through control of operation of the first electric motor that is linked to a rotating element of the differential mechanism so as to be capable of power transmission, and an engagement device that constitutes a portion of a power transmission path between the electrical differential portion and a driving wheel, the control device comprising: a lock mechanism that restricts the differential state of the differential mechanism and that operates if rotation speed of the rotating element of the differential mechanism is greater than or equal to a predetermined value; and an engine stop control device that operates the lock mechanism when an engine stop control is executed while the engagement device is in a non-engaged state and that controls applying a drive torque in such a direction as to reduce engine rotation speed, to the first electric motor linked to the rotating element of the differential mechanism so as to be capable of power transmission.