HYBRID VEHICLE CONTROL DEVICE

The object of the present invention is to realize the motor electric power generation in the allowed range while suppressing the variation in the clutch input rotational speed when the input rotational speed control of the start clutch is switched from the motor rotational speed control to the engine rotational speed control. The hybrid vehicle control device has an engine 1, a motor/generator 2, a second clutch 5 as the start clutch, and a transient control mode switching means ( FIG. 11 ). Here, the second clutch 5 is arranged in the driving force transmission system from the motor/generator 2 to the wheels 7 and 7 and is engaged under the input rotational speed control. The transient control mode switching means works as follows: when the input rotational speed control of the second clutch 5 is switched from the motor rotational speed control to the engine rotational speed control, the motor rotational speed control is maintained, and both the motor rotational speed control and the engine rotational speed control are carried out at the same time until a determination is made that the engine torque is stable; after a determination is made that the engine torque is stable, the control is switched from the motor rotational speed control to the motor torque control.