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Differential limiting torque control system for automotive vehicles

  • US 5,471,390 A
  • Filed: 07/05/1994
  • Issued: 11/28/1995
  • Est. Priority Date: 07/23/1993
  • Status: Expired due to Term
First Claim
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1. A differential limiting torque control system for an automotive vehicle with an anti-skid brake control device which operates to suppress wheel lock by adjusting a brake-fluid pressure in a road wheel cylinder during braking, said system comprising:

  • differential limiting means mounted between right and left drive road wheels, for producing a differential limiting torque through which a differential action is limited;

    sensor means for detecting a deceleration of the vehicle, a lateral acceleration exerted on the vehicle, a vehicle speed and a drive-wheel speed difference between said right and left drive road wheels;

    first derivation means responsive to both the detected deceleration and the detected lateral-acceleration, for deriving a first target torque having a specified torque characteristic according to which said first target torque is increased in accordance with the detected deceleration;

    second derivation means responsive to the detected drive-wheel speed difference, for deriving a second target torque having a specified torque characteristic according to which said second target torque is increased in accordance with the detected drive-wheel speed difference; and

    control means for controlling said differential limiting means to adjust said differential limiting torque to a higher one of said first and second target torques, only when said anti-skid brake control device is conditioned in an operative state.

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