Continental Teves, Ag and Company Ohg

Continental Teves, Inc.

Continental Aktiengesellschaft

Ines Runge

Andreas Köbe

Martin Griesser

Lennert Gootjes

Joachim Kohn

Frank Edling

Vladimir Koukes

Holger Behrends

Yongle Lou

Peter Olejnik

Maik Hofmann

Martin Grieβer

Alfred Duchow

Andreas Koebe

Jörg Cunz

Stefan Kluge

Disclosed is a method of indirect tire pressure monitoring. The method includes: learning test variables (DIAG, SIDE, AXLE), which describe the rotational movements of the wheels; determining rolling circumference differences (&#x394;DIAG, &#x394;SIDE, &#x394;AXLE) from actually determined test variables and the learnt test variables; learning at least one torsion natural frequency ffor at least one tire from the oscillation behavior of the individual tires; determining at least one shift of the torsion natural frequency &#x394;ffrom at least one actually determined torsion natural frequency and from the at least one learnt torsion natural frequency; and combining the rolling circumference differences (&#x394;DIAG, &#x394;SIDE, &#x394;AXLE) with the at least one shift of the torsion natural frequency fin a joint warning strategy for detecting and warning of tire inflation pressure loss.

Method for indirect tire pressure monitoring

Disclosed are different processes for the determination of the internal pressure, particularly of the minimum pressure of the tire of a motor vehicle during driving operation, through an analysis of the characteristic vibration behavior of the wheel, whereby the standardized amplitude is determined from the vibration spectrum determined and the resonance frequency is observed.

Method for determining internal pressure of a vehicle tire

The present invention is directed to monitoring the loss of pressure in one or more tires by detecting the angular speed variations of one or more wheels of the vehicle over a specified wheel revolution period and analyzing the vibration of the speed various. Changes in the frequency are related to pressure loss, which is indicated to the driver, for example, by displaying the tire pressure loss information on a display.

Tire pressure loss detection

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Hannover, Germany

Ines Runge