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Method for recognition of a pressure loss in motor vehicle tires

  • US 8,180,523 B2
  • Filed: 07/06/2005
  • Issued: 05/15/2012
  • Est. Priority Date: 07/09/2004
  • Status: Expired due to Fees
First Claim
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1. A method for detecting a pressure loss in at least one of a plurality of motor vehicle tires, the method comprising the steps of:

  • detecting a pressure loss in at least one of a plurality of motor vehicle tires due to a change of a rolling circumference of the at least one of a plurality of motor vehicle tires;

    calculating at least two different parameters from the rolling circumference of the at least one of a plurality of motor vehicle tires, wherein the at least two different parameters are calculated depending at least on at least a wheel torque; and

    evaluating the at least two different parameters to detect pressure loss on the at least one of a plurality of motor vehicle tires, wherein the at least two different parameters are at least of two of diagonal wise (DIAG), sidewise (SIDE), or axlewise (AXLE), wherein a gradient of the parameter axlewise (AXLE) is evaluated as a function of the wheel torque at a constant vehicle speed to determine whether a change of the gradient exceeds a threshold, and the pressure loss is detected if the gradient exceeds the threshold.

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