Patent ID: 8088034

Claim:
A control device for a hybrid vehicle power transmitting apparatus, wherein, the hybrid vehicle power transmitting apparatus comprises (i) an electrically controlled differential portion having a differential mechanism connected between an internal combustion engine and drive wheels and at least one electric motor connected to the differential mechanism in a power transmissive state for controlling a differential state of the differential mechanism upon controlling an operating state of the electric motor, (ii) a shifting portion forming part of a power transmitting path, and (iii) a differential-state switching mechanism for switching the electrically controlled differential portion in a differential state operative to establish a differential action and a non-differential state in which the differential action is disabled, the control device executes a heat generation control for increasing a heat generation amount of the at least one electric motor when the electrically controlled differential portion is placed under the non-differential state and a temperature of the hybrid vehicle power transmitting apparatus is less than a temperature determining value given for the non-differential state, and the control device alters an operating point of the electrically controlled differential portion, representing a condition for determining a relative rotation speed between rotary elements forming the differential mechanism, so as to increase a temperature of the at least one electric motor when the electrically controlled differential portion is placed under the differential state and the temperature of the hybrid vehicle power transmitting apparatus is less than a temperature determining value given for the differential state.