Engine vibration suppression device and suppression method thereof

An engine vibration suppression device for an engine in which a rotating electrical machine is connected to an engine output shaft, comprising:

• means for estimating an internal cylinder pressure of the engine on the basis of an operating condition of the engine;
• means for calculating a torque variation in the engine on the basis of the estimated internal cylinder pressure;
• means for calculating an opposite phase torque of the torque variation in the engine as a torque correction amount;
• means for calculating a torque command value of the rotating electrical machine by adding the torque correction amount to a basic torque value for driving the rotating electrical machine to rotate;
• and
• means for torque-controlling the rotating electrical machine such that a torque of the rotating electrical machine is equal to the torque command value.

An engine vibration suppression method for an engine in which a rotating electrical machine is connected to an engine output shaft, comprising:

• estimating an internal cylinder pressure of the engine on the basis of an operating condition of the engine;
• calculating a torque variation in the engine on the basis of the estimated internal cylinder pressure;
• calculating an opposite phase torque of the torque variation in the engine as a torque correction amount;
• calculating a torque command value of the rotating electrical machine by adding the torque correction amount to a basic torque value for driving the rotating electrical machine to rotate;
• and
• torque-controlling the rotating electrical machine such that a torque of the rotating electrical machine is equal to the torque command value.