Patent ID: 6909949

Claim:
A method for detecting a pressure loss in tires of a motor vehicle during travel including detecting a drop of the pressure below a definable threshold value (critical tire pressure), the method comprising the steps of: providing sensors for detecting the respective angular velocities of the wheels of said motor vehicle; and, evaluating sensor determined angular velocities of the wheels of said motor vehicle or evaluating informations, which indicate the angular velocities on the basis of time intervals; providing two or more submethods (Prog A, Prog B, Prog S, Prog V) which are each by themselves a separately operable method for measuring the pressure in a motor vehicle tire or for detecting a critical tire pressure; carrying out the steps of the submethods in parallel or quasi parallel; and; wherein said method includes at least a first submethod (Prog A) and a second submethod (Prog B); both submethods generate one or more reference quantities Ref 1 from the angular velocities or informations which indicate the angular velocities on the basis of time intervals; and, the reference quantity or quantities are thereafter checked as to whether upper and lower limit values G 1 and G 2 are exceeded; and, the second submethod (Prog B) has limit values B G 1 and B G 2 which define a narrower range than the limit values A G 1 and A G 2 of the first submethod (Prog A) so that B G 1 < A G 1 and B G 2 > A G 2 .