Differential limit torque control apparatus

A differential limit torque control apparatus for use with an automotive vehicle having at least one pair of drive road wheels, comprising:

• means provided between the drive road wheels for producing a differential limit torque;
• means for sensing a vehicle deceleration and for calculating a required differential limit torque value corresponding to the vehicle deceleration;
• means for sensing a decrease in the required differential limit torque value and for selecting a first filter having a slow output response with respect to the required differential limit torque value decrease in the presence of vehicle braking and a second filter having a fast output response with respect to the required differential limit torque value decrease in the absence of vehicle braking as determined from the sensed vehicle deceleration;
• means for calculating a target value for the differential limit torque through a filtering process using the selected one of the first and second filters and the required differential limit torque value;
• and
• means for controlling the differential limit torque producing means to adjust the produced differential limit torque to the target value.