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Method and device for detecting a drop in pressure in motor vehicle tyres

  • US 20030052774A1
  • Filed: 09/03/2002
  • Published: 03/20/2003
  • Est. Priority Date: 12/15/1999
  • Status: Active Grant
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1. Method for detecting a pressure loss of tires in a motor vehicle during travel, especially for detecting the seating of the tire casing on an emergency tread present in the tire or the lowering of the tire pressure below a threshold value (critical tire pressure), via evaluation of sensor determined angular velocities of the wheels of the motor vehicle or evaluation of informations, which indicate the angular velocities on the basis of time intervals, characterized in that the method for pressure loss detection is based on detecting a high pressure loss or a total pressure loss based on a reduction of the angular velocity and/or of an increase of the dynamic rolling radius rd in one or more wheels.

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