Patent ID: 8574120

Claim:
A vehicle driving system control apparatus comprising a power transmission device capable of transmitting a power of an engine, a power of a first motor generator, and a power of a second motor generator to an axle of a vehicle, and a power transmission control section, wherein the power transmission device includes: an engine input shaft transmitting the power of the engine; a motor input shaft transmitting the power of the first motor generator; an output shaft receiving the power of the second motor generator and outputting the power to be transmitted to the axle; an engine-side gear mechanism transmitting the power of the engine input shaft to the output shaft without the motor input shaft; a motor-side gear mechanism transmitting the power of the motor input shaft to the output shaft without the engine input shaft; a first clutch being engaged and disengaged so as to enable and disable a power transmission between the engine input shaft and the motor input shaft; a second clutch being engaged and disengaged so as to enable and disable a power transmission between the motor-side gear mechanism and the output shaft; and a third clutch being engaged and disengaged so as to enable and disable a power transmission between the engine-side gear mechanism and the output shaft, and wherein the power transmission control section determines engagement and disengagement statuses of the first to third clutches and required torques of the first and second motor generators in correspondence with a rotation speed of the axle.