Control device for internal combustion engine

A control device of an internal-combustion engine which is provided with an actuator actuated in response to an input of a control signal, wherein the torque output from said internal-combustion engine is adjusted in accordance with the actuation of said actuator and the responsiveness of torque with respect to the actuation of said actuator changes with the operating conditions of said internal-combustion engine, said control device comprising:

• target torque set means which receives a demand for the torque output from said internal-combustion engine and sets a target torque of said internal-combustion engine based on the torque demand;
• conversion means which converts the target torque into the control signal for said actuator;
• and
• target torque correction means which corrects the target torque input into said conversion means by use of a first-order-lag filter when said internal-combustion engine is operated in a rotational speed range higher than a predetermined reference rotational speed, wherein the higher the engine rotational speed is than said reference rotational speed, the more said target torque correction means enlarges the time constant of said first-order-lag filter, so that the responsiveness of actual torque with respect to the torque demand is adjusted to certain fixed responsiveness without depending on the engine rotational speed.