CONTROL APPARATUS FOR VEHICLE

摘要

A control apparatus for a vehicle shifts a lock-up clutch to a slipping or released state when braking. The control apparatus causes an electric motor to output assist torque in a direction increasing a rotational speed of an engine, during control for shifting the lock-up clutch to a released state, when prescribed sudden braking is required during engine-powered travel in a locked-up state. Therefore, even if there is a time delay in actual implementation of shift from the locked-up state to the released state by the lock-up clutch, the rotational speed of the engine is increased (or maintained), or decrease in the rotational speed of the engine is suppressed, by the assist torque from the electric motor.

主权项

1. A control apparatus for a vehicle including an engine and an electric motor coupled so as to be able to transmit drive power to drive wheels, and a fluid transmission apparatus having a lock-up clutch interposed in a drive power transmission path between the drive wheels and the engine and the electric motor,
the control apparatus comprising: an electronic control unit configured to:
(a) implement control so as to shift the lock-up clutch to a slipping or released state in the event of braking during engine-powered travel in which the vehicle travels using at least the engine as a source of drive power, and(b) implement control so as to output an assist torque from the electric motor to increase a rotational speed of the engine, during the control for shifting the lock-up clutch to the slipping or released state, when prescribed sudden braking is required during the engine-powered travel, with the lock-up clutch in a fully engaged state.