Knorr-bremse Systeme Fuer Nutzfahrzeuge Gmbh

Thomas Kliegl

Christian Staahl

A method is provided for determining an air gap of a vehicle brake, in particular for a motor vehicle, wherein the vehicle brake includes a clamping device, a wear adjustment device, a sensor apparatus for detecting an actuation stroke of the clamping device, and a vehicle control system. The method performs the following steps: (S) receiving a measurement signal of the actuation stroke, which measurement signal is provided by the sensor apparatus, within a previously specifiable time window during a braking process and storing the measurement signal as data pairs of actuation stroke and time during a braking process; (S) calculating a time derivative of the measurement signal in the time window by a suitable algorithm in order to determine a point in time at a maximum; and (S) determining the air gap on the basis of the point in time thus determined and forwarding the value of the air gap thus determined to the vehicle control system. A vehicle brake is equipped with a device for determining an air gap for performing the method.

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Waiblingen, Germany

Thomas Kliegl