Non-uniform displacement engine control system assisted by motor and method for the same

In a system including the present invention, the non-uniform displacement enjinreul arranged differently cylinder by displacement, by performing a control utilizing the motor, not only can be a characteristic of the other displacement implemented in accordance with the driving state, the power by the motor secondary, and by using the regenerative braking characteristic relates to a new concept of non-uniform displacement of the engine management system and a control method that improves the noise and vibration characteristics of the non-uniform displacement of the engine.