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Failsafe wheel slip control system and method of operating same

  • US 4,361,871 A
  • Filed: 05/07/1980
  • Issued: 11/30/1982
  • Est. Priority Date: 05/07/1980
  • Status: Expired due to Term
First Claim
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1. In a system for balancing the power transfer between two vehicle wheels (200,202) which are driven by a common input shaft (204) through a differential unit (206) when one of said wheels loses traction, said system being of the type which includes means (216,222) for generating wheel speed signals, control means (220) for developing a slip signal related to the difference between said wheel speed signals, and means (212,214) operated by said control means (220) for applying a braking force to the wheel which loses traction, the improvement comprising:

  • means (226) for generating a signal representing input shaft speed, said control means (220) including means (242) for comparing wheel and input shaft speeds and preventing actuation of the braking means (212,214) for slip control purposes until the ratio of the speed of the wheel which loses traction to the speed of the input shaft exceeds a predetermined value.

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