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Method and device for detecting hydroplaning conditions for vehicle tires

  • US 5,502,433 A
  • Filed: 12/17/1993
  • Issued: 03/26/1996
  • Est. Priority Date: 12/17/1992
  • Status: Expired due to Fees
First Claim
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1. A method for detecting a hydroplaning risk for vehicle tires, said method comprising the steps of:

  • measuring continuously sequential deformations of tread elements of the vehicle tire in a circumferential direction over a circumferential length of the tread elements while passing through a contact zone of the vehicle tire and generating a sequence of corresponding signals, wherein said sequence of corresponding signals has a section, referred to as a positive impulse, wherein the deformations of the tread elements near a leading edge of the contact zone are counter to the direction of rotation;

    differentiating the sequence of corresponding signals over the circumferential length to determine a slope near a center of the positive impulse;

    comparing the slope to predetermined evaluation standards; and

    as a function of said predetermined evaluation standards, determining the danger of hydroplaning when said slope is below a preset value whereby a warning signal is generated.

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