Control system for controlling output torque of internal combustion engine

A control apparatus for use in an internal combustion engine of a motor vehicle, comprising:

• vehicle resonance reducing means for controlling an opening degree of a throttle valve on the basis of an operating condition of said engine so as to reduce a vehicle resonance accompanying an operation of said engine and further for reversely and temporarily moving said throttle valve in a closing direction when said motor vehicle is in an acceleration state;
• intake air amount detecting means mounted on said motor vehicle for detecting the amount of an intake air to be supplied to said engine;
• fuel injection amount calculating means for calculating a fuel injection amount on the basis of the detected intake air amount;
• and
• overshoot correction means for correcting an overshooting portion of the intake air amount detected by said intake air amount detecting means when said vehicle resonance reducing means is in operation and when the acceleration is at an initial stage so as to prevent overshooting of the fuel injection amount at the initial stage of the acceleration.

A control apparatus for use in an internal combustion engine of a motor vehicle, comprising:

• vehicle resonance reducing means for controlling an opening degree of a throttle valve on the basis of an operating condition of said engine so as to reduce a vehicle resonance accompanying an operation of said engine and further for reversely and temporarily moving said throttle valve in a closing direction when said motor vehicle is in an acceleration state;
• intake air amount detecting means mounted on said motor vehicle for detecting the amount of an intake air to be supplied to said engine;
• engine speed detecting means for detecting a rotational speed of said engine;
• fuel injection amount calculating means for calculating a fuel injection amount on the basis of the detected intake air amount and the detected engine speed;
• and
• calculation means for calculating a fuel injection amount on the basis of the opening degree of said throttle valve and the detected engine speed or on the basis of an intake pipe pressure when said vehicle resonance reducing means is in operation and when the acceleration is at an initial stage.

A control apparatus for use in an internal combustion engine of a motor vehicle, comprising:

• a throttle valve for controlling a torque of said engine;
• accel-operating amount detecting means for detecting an accel-operating amount due to a drive of said motor vehicle;
• throttle driving means for driving said throttle valve in accordance with the detected accel-operating amount so as to increase and decrease the torque of said engine in accordance with increase and decrease in said detected accel-operating amount;
• and
• torque control means for compulsorily controlling the torque of said engine in a direction reverse to the increasing or decreasing direction of the detected accel-operating amount while the detected accel-operating amount varies.

A control apparatus for use in an internal combustion engine of a motor vehicle, comprising:

• a throttle valve for controlling a torque of said engine;
• accel-operating amount detecting means for detecting an accel-operating amount due to a drive of said motor vehicle;
• throttle driving means for driving said throttle valve in accordance with the detected accel-operating amount so as to increase and decrease the torque of said engine in accordance with increase and decrease in said detected accel-operating amount;
• torque controlling means for compulsorily keeping the torque of said engine or reducing the increasing or decreasing speed of the torque of said engine at least one time for a predetermined time period while the detected accel-operating amount varies;
• vehicle operation variable detecting mean for detecting an operation variable of said motor vehicle;
• and
• decision means for deciding said predetermined time period that said torque controlling means operates in accordance with the operation variable detected by said vehicle operation variable.

A control apparatus for use in an internal combustion engine of a motor vehicle, comprising:

• first and second throttle valves for controlling a torque of said engine;
• accel-operating amount detecting means for detecting an accel-operating amount due to a driver of said motor vehicle;
• first throttle driving means for driving said first throttle valve in accordance with the detected accel-operating amount so as to increase or decrease the torque of said engine in accordance with increase or decrease in the accel-operating amount;
• and
• second throttle driving means for driving said second throttle valve at least one time in a direction reverse to the accel-operating amount increasing or decreasing direction when the accel-operating amount varies and when traction operation is not effected.