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Slip control system for a vehicle

  • US 5,070,461 A
  • Filed: 03/12/1990
  • Issued: 12/03/1991
  • Est. Priority Date: 03/10/1989
  • Status: Expired due to Fees
First Claim
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1. A slip control system for a vehicle, comprising:

  • a torque adjusting means for adjusting torque to be applied to a driven wheel;

    a slip-value detecting means for detecting a slip value of the driven wheel on a road surface;

    a first control means for subjecting the torque adjusting means to feedback control so as to allow the slip value of the driven wheel to reach a predetermined target value in response to output from the slip-value detecting means;

    a second control means for reducing the torque to be applied to the driven wheel temporarily by a predetermined decrement by controlling the torque adjusting means prior to the first control means when the slip value detected by the slip-value detecting means reaches a first judgment value set as a value greater than the predetermined target value; and

    a third control means for reducing the torque to be applied to the driven wheel gradually by controlling the torque adjusting means prior to the first control means when the slip value detected by the slip-value detecting means does not reach a second judgment value set as a value smaller than the first judgment value even if a predetermined period of time elapses after start of control by the second control means.

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