Patent ID: 8628450

Claim:
A vehicular power transmission control apparatus that is applied to a vehicle including an internal combustion engine and an electric motor as power sources, and that includes: a transmission mounted between an output shaft of the internal combustion engine and a driving wheel of the vehicle; and a clutch that is mounted between the output shaft of the internal combustion engine and an input shaft of the transmission, and that can adjust a clutch torque, which is a maximum torque that the clutch can transmit, wherein an output shaft of the electric motor is connected to the input shaft or the output shaft of the transmission, the power transmission control apparatus comprising: a control unit that controls a torque of the internal combustion engine and a torque of the electric motor based upon a driving condition of the vehicle, and controls the clutch torque to have a value greater than the torque of the output shaft of the internal combustion engine; and a determining unit that determines whether a driver requests a deceleration of the vehicle based upon a driver's operation for an acceleration operation member of the vehicle, wherein the control unit is configured such that, when it is determined that the driver requests the deceleration of the vehicle, it keeps the torque of the electric motor to be zero, estimates a deceleration torque stabilized value, which is the stabilized value, in the deceleration direction, of the torque of the internal combustion engine after it is changed from a value in the acceleration direction to a value in the deceleration direction, adjusts the clutch torque to be a value based upon the deceleration torque stabilized value, before the torque of the internal combustion engine reaches the deceleration torque stabilized value, and when the torque of the internal combustion engine reaches the deceleration torque stabilized value, it gradually decreases the clutch torque from the value based upon the deceleration torque stabilized value, as well as gradually increases a regeneration torque of the electric motor from zero.