Continental Teves, Ag and Company Ohg

Itt Manufacturing Enterprises, Inc.

Itt Automotive Europe Gmbh

Thomas Proger

Norbert Ehmer

Markus Zenzen

Helmut Fennel

Robert Schmidt

Dieter Burkhard

Alexander Kolbe

Alexander Volz

Gerhard Kunz

The invention provides a method of detecting a defective condition on a pressure switch arrangement which at least assumes a defective condition on the said pressure switch assembly whenever a signal arrives at an input of an electronic computing unit which cannot be associated either to the opened or to the closed condition of the pressure switch. Moreover, a defective condition on the pressure switch arrangement mounted in the brake system of a vehicle is assumed, once the pressure switch signal refers to an actuated brake although the vehicle is significantly accelerated. Conversely, a defective condition is also assumed if the vehicle significantly decelerates although the pressure switch signal refers to a lack of brake pressure. Also, an appropriate pressure switch arrangement is provided which, with the pressure switch closed, generates a rectangular signal and, with the pressure switch opened, generates a high level on the input II of an electronic computing unit. With an incoming low level, an error on the pressure switch arrangement is assumed.

Method and apparatus for detecting a defective pressure switch

The present invention discloses a brake system with electronic brake force distribution which includes additional criteria of deactivation of the electronic brake force distribution. Deactivation of the electronic brake force distribution is intended to occur, on the one hand, if a pressure increase phase lasts longer than a defined time ( ). On the other hand, another criterion of deactivation ( ) is deceleration-responsive, and an additional check is made whether or not braking is pedal operated ( ).

Method of terminating electronic brake force distribution

Braking system with electronic braking force distribution

Process for monitoring a braking system with antilock system and

Brake system which maintains brake force distribution upon system

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Rodermark, Germany

Thomas Proger