Lucas Industries Limited

Josef Knechtgens

Andreas Marx

Helmut Gegalski

Thomas Bach

Thomas Wald

Frank Heller

Michael Schwarz

Thomas Wagner

An anti-locking brake system for a land vehicle, which is set up in particular for traction control and vehicle dynamics control, comprises a pump ( ) for actuating a wheel brake ( ) which removes brake fluid from a brake pressure generating unit ( ) and supplies it to the wheel brake ( ), wherein a first valve arrangement ( ) blocks in a non-actuated (normal) position ( ) the connection between the brake pressure generating unit ( ) and an input connection ( ) of the pump ( ) and in at least one actuated position ( ) establishes a primary flow connection (A), a first electromagnetic valve ( ) establishes in a non-actuated position ( ) the connection between an output connection ( ) of the pump ( ) and the brake pressure generating unit ( ), and blocks it in an actuated position ( ), a second electromagnetic valve ( ) blocks the connection between the wheel brake ( ) and the input connection ( ) of the pump ( ) in a non-actuated position, and in an actuated position establishes it, and a third electromagnetic valve ( ) establishes the connection between the output connection ( ) of the pump ( ) and the wheel brake ( ) in a non-actuated position ( ) and blocks it in an actuated position ( ). To generate a more accurate pressure modulation during the operating phase &ldquo;maintain pressure&rdquo; (II), the third electromagnetic valve ( ) is in the actuated position during said operating phase.

Anti-locking brake system for a land vehicle

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Mayen, Germany

Josef Knechtgens