Patent ID: 8731760

Claim:
A vehicle driving system control apparatus comprising: a power transmission device capable of transmitting a power of an engine and powers of a first motor generator and a second motor generator to an axle of a vehicle, the power transmission device including 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 to enable and disable a power transmission between the engine input shaft and the motor input shaft, a second clutch being engaged and disengaged 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 to enable and disable a power transmission between the engine-side gear mechanism and the output shaft; a battery supplying and receiving an electric power to and from the first motor generator and the second motor generator; a required brake torque calculation section calculating a required brake torque based on a vehicle speed and a brake operation amount; a target energy regeneration amount calculation section calculating a target energy regeneration amount based on the required brake torque and a charge status of the battery; and a regeneration control section performing a regeneration control when the vehicle is decelerated, wherein, in the regeneration control, the regeneration control section drives at least one of the first motor generator and the second motor generator with a power of the axle so as to charge the battery with the electric power generated with the at least one of the first motor generator and the second motor generator, and wherein the regeneration control section selects a mode of the regeneration control by controlling engagement and disengagement statuses of the first to third clutches in correspondence with at least one of the target energy regeneration amount, the required brake torque and the vehicle speed.