Zf Friedrichshafen Ag

Fichtel & Sachs Ag

Zf Freidrichshafen Ag

Zf Sacha Ag

Helmut Baalmann

Steffen Heyn

Achim Thomae

Andreas Förster

Michael Triebel

Oswald Lichtlein

Thomas Manger

Robert Pradel

Norbert Ackermann

Holger Kirchner

Gunther Braun

Stefan Rappelt

Hendrik Marquar

Alexander Schwarz

Harun Tucovic

Christian Maurischat

Jens Seiler

Wilhelm-Heinrich Broocks

Joachim Gajek

Sven Greger

Anke Sonnemann

Sven Philip Krüger

Gunther Handke

Hassan Asadi

Stefan Schmitt

Heinz Sydekum

Thomas Thein

Rolf Wengenroth

Hans Gonschorrek

Horst Muller

Dirk Litterscheid

Peter Schmitt

Michael Hegmann

Klaus Kupfer

Stefen Rappelt

Albin Hahn

Ernst Oswald

Eberhard Simon

Lothar Krill

Alexander Kruse

A damping valve includes a valve body has at least one through-flow channel for each flow direction of a damping medium through the valve body. Each through-flow channel connects an inlet to an outlet. a valve disk covers the through-flow channels at the outlet opening the valve disk has a first volume flow of the damping medium through the valve body, at least one pre-orifice in the valve disk and at least one pre-orifice throttle arrangement is arranged at least indirectly adjoining the valve disk and adapted to at least partially cover or open the pre-orifice depending on the flow direction of a damping medium. The pre-orifice throttle arrangement includes multiple structural component parts arranged coaxial to one another, at least two of the structural component parts are inseparably connected to one another.

Damping valve comprising a direction-dependent pilot opening cross-section for a vibration damper

A method for operating a motor vehicle with a chassis arrangement having at least two vibration dampers. A body control is carried out at least partially with the vibration dampers. The chassis arrangement further has at least one stabilizer. During transverse accelerations below a threshold acceleration the stabilizer contributes to the body control less than the vibration dampers and contributes more than the vibration dampers from the threshold acceleration upward.

Method for operating a motor vehicle, method for roll compensation of a motor vehicle, and motor vehicle

A method of operating a motor vehicle with a chassis system comprising at least two, preferably four vibration damper includes carrying out a body control and a wheel control with the chassis system, and controlling the energy supply for the chassis system via an energy control arrangement. A motor vehicle performing the method is also disclosed.

Method of operating a motor vehicle, and motor vehicle

A roll stabilization system () for a motor vehicle which has a DC voltage converter () associated with an electric roll stabilizer (). By way of the DC voltage converter, a feed voltage can be transformed into a supply voltage for the roll stabilizer (). To produce as compact a structure as possible, the DC voltage converter () is integrated in the electric roll stabilizer ().

Roll stabilization system for a motor vehicle

A vibration damper with a piston, a piston rod fastened to the piston, a working chamber divided by the piston into a first working chamber and second working chamber, and a generator drivable by movement of the piston rod. The damping force of the vibration damper can be influenced by energization of the generator. An energizable component part is provided that short-circuits the windings of the generator when unenergized and cancels the short circuit when energized.

Vibration damper and motor vehicle

A preloading device for a piston valve of a vibration damper includes a spring element which is fitted by an inner diameter onto a radially inner centering device which serves for inner centering of the spring element in the installed state of the preloading device. To provide a preloading device for a piston valve by which a reliable inner centering of a spring element can be ensured but which can be placed with low expenditure on assembly at the same time, the spring element is axially fixed at the centering device via retaining means in that the retaining means at least partially enclose the spring element axially on both sides and are rigidly connected to the centering device in each instance.

Preloading device for a piston valve of a vibration damper

Energy-recuperating vibration damper having a cylinder in which a displacer executes a limited operating movement in a working chamber so that a pressurized fluid is supplied to a fluid motor which drives a generator. A compensation chamber compensates for a change in volume of the pressurized fluid. A pressure accumulator is provided in addition to the compensation chamber, which pressure accumulator communicates with and is parallel-connected to the fluid motor.

Energy-recuperating fluid vibration damper

The vibration damper including a hydraulic end stop that has a sealing ring which is arranged between the end stop ring and the closure element, is supported axially on one side at the end stop ring, engages radially around the piston rod, is mounted in a sliding manner at the piston rod, and with its outer circumferential surface radially contacts the inner wall of the control space, wherein the sealing ring has at least one radial throttle groove which takes effect when the end stop with the sealing ring moves into the control space and ensures a defined flow of damping medium between the control chamber and the first working space, and wherein the sealing ring has a plurality of spring tongues which are supported at a supporting surface on the piston rod side.

Vibration damper with a hydraulic end stop

A damping valve for a vibration damper includes a guide sleeve which slides on the piston rod of a vibration damper. An annular damping valve body which is provided with at least one through-opening is fixed axially by positive engagement on the guide sleeve, and the through-opening is covered at least partly by at least one valve disk which is biased by at least one closing spring which is supported at its end at a spring plate connected to the guide sleeve. The damping valve body and a spring plate which is constructed separate from the guide sleeve form a compression chain between two axially spaced stops of the guide sleeve.

Damping valve for a vibration damper

Vibration damper includes a cylinder filled with a damping medium in which a piston rod with a piston is guided in an axially movable manner, wherein the piston divides the cylinder into a work space on the piston rod side and a work space remote of the piston rod. A bypass connects at least one of the two work spaces with a first work chamber in a housing in which an axially movable separating piston separates the first work chamber from a second work chamber, the bypass being controlled by a switchable valve.

Vibration damper with amplitude-selective damping force

In a vibration damper for a motor vehicle a flow path connecting a working chamber of the cylinder with a damping behavior control unit is confined by a flow path tube surrounding the cylinder. The flow path tube is provided adjacent its axial end portions with bead-shaped grooves accommodating respective sealing rings. These sealing rings are according to an illustrated example of the invention in engagement with an external surface of the cylinder. The bead-shaped grooves are obtained by non-cutting machining.

Vibration damper unit

A casing tube of a vibration damper is provided with a connecting sleeve extending substantially radially from the radially outer circumferential surface of the casing tube. At the location where the connecting sleeve is fastened to the casing tube, the casing tube is provided with a planar face area.

Vibration damper

Growing community of inventors

Bergrheinfeld, Germany

Helmut Baalmann