Control device for hybrid vehicle

摘要

A hybrid vehicle control device basically includes an engine, a motor/generator, a first clutch, a second clutch and an engine start control section. The first clutch is disposed between the engine and the motor/generator. The second clutch is disposed between the motor/generator and a drive wheel. The engine start control section has a second clutch slip transition control section that is configured to control a transition of the second clutch to slip engagement when an engine start control is begun based on a mode transition request resulting from an accelerator depression operation, by increasing the torque transmission capacity of the second clutch according to a prescribed slope after dropping the torque transmission capacity of the second clutch to a value smaller than a target drive force.

主权项

1. A hybrid vehicle control device comprising:
an engine; a motor; a first clutch disposed in a driving force transmission path between the engine and the motor; a second clutch disposed in a driving force transmission path between the motor and a drive wheel; and an engine start control section configured to begin an engine start control upon receiving a mode transition request to change to a hybrid vehicle mode while an electric vehicle mode is selected in which the first clutch is disengaged, the engine start control section executing a control to transition the second clutch to a slip engagement state, beginning engagement of the first clutch when slippage of the second clutch is determined, and starting the engine using the motor as a starter motor, the engine start control section having a second clutch slip transition control section configured to control the transition of the second clutch to the slip engagement state when the engine start control is begun based on a mode transition request resulting from an accelerator depression operation, by increasing a torque transmission capacity of the second clutch according to a prescribed slope after dropping the torque transmission capacity of the second clutch to a value smaller than a target drive force, the second clutch slip transition control section being further configured to make an increase rate of a motor torque outputted from the motor larger than an increase rate of the target drive force upon the second clutch slip transition control section beginning to increase the torque transmission capacity of the second clutch according to the prescribed slope.