Patent ID: 8342273

Claim:
A control apparatus for a vehicle drive system, in which an internal combustion engine is coupled to a pinion gear of a planetary gear set through a carrier, a first motor generator is coupled to sun gear of the planetary gear set and a wheel drive shaft is coupled to a ring gear of the planetary gear set and a second motor generator is coupled to the wheel drive shaft, the control apparatus comprising: a limp-home travel control section configured to change a vehicle operation mode to a limp-home travel mode, in which a vehicle is driven by only drive power of the second motor generator, when a predetermined abnormality occurs; and an over rotation limitation control section configured to perform, when the vehicle operation mode is changed to the limp-home travel mode due to occurrence of abnormality in a system of the first motor generator, an over rotation limitation control to control a rotation speed of the internal combustion engine so that a difference between a rotation speed of the carrier and a rotation speed of the ring gear is limited to be within a predetermined range and a rotation speed of the pinion gear is limited to be lower than a predetermined limit value.