Zf Friedrichshafen Ag

Lothar Callies

Steffen Heyn

Timo Schaffelhofer

An adjustable damping valve () includes a pressure space () for controlling the damping valve (), which pressure space () is arranged inside the damping valve () and is connected to a further space () via at least one choke orifice () for the flow of damping medium, and the pressure space () is operatively connected to the further space () via a pressure relief valve ().

Damping valve comprising a pressure relief valve

Adjustable damping valve for a vibration damper having a valve body having a pressure-loaded surface that acts in the lifting direction of the valve body and is impinged by an incident flow of damping medium from an opening inside a cross section limited by valve seat surface, and a surface operative in the closing direction is formed by a rear side of the valve body. A resulting force including a force of at least one valve spring and an actuating force of an actuator acts on the valve body. An additional surface of the valve body is pressure-loaded by damping medium by incident flow on the valve body in the closing direction of the valve body, or the valve body has a first pressure-loaded surface acting in the lifting direction, and a second pressure-loaded surface that acts in the lifting direction.

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Poppenhausen, Germany

Lothar Callies