A hybrid vehicle which uses the mechanical force of an engine and or the mechanical force of a motor as the motive source for the vehicle is known in the prior art.
The engine and the motor are connected by a clutch. When the output of the engine and the output of the motor are switched by the clutch on the basis of driving conditions, a shock is generated at the switch if there is a difference between the two outputs. As a result, there is a deterioration in driving conditions and comfort.
For example, it is known in the art, that when the vehicle is decelerating using the engine as an engine brake on the basis of the friction torque of the engine, it is possible to switch to generating electricity by using the motor as a generator brake and using the energy the vehicle has when decelerating (for example refer to published application . . . ). However when the clutch is released and a switch is made from the engine to the motor, a shock is generated when there is a difference between the braking force of the engine and the braking force of the motor.