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Torque distribution control system for a four wheel drive vehicle

  • US 4,981,190 A
  • Filed: 01/31/1990
  • Issued: 01/01/1991
  • Est. Priority Date: 01/31/1989
  • Status: Expired due to Fees
First Claim
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1. A torque distribution control system for a four wheel drive vehicle comprising:

  • a brake means disposed at each of four wheels independently and separately from each other;

    a braking pressure adjusting means disposed at each of two groups of the wheels;

    a slip value detecting means for detecting a slip value of each wheel with respect to pavement;

    a slipping-wheel judging means for judging a slipping wheel which slips in an actual slip value greater than a given target slip value by comparing the actual slip value detected by said slip value detecting means with the target slip value;

    a brake control means for operating said brake means against the group of the wheels containing the slipping wheel when the slipping wheel detected by said slipping-wheel judging means is contained only one of the two groups of the wheels; and

    an engine control means for operating an engine to increase its output torque in accordance with operation of said brake means when said brake control means is operated.

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