Mercedes Benz Lenkungen Gmbh

Thyssenkrupp Presta Steertec Gmbh

Mercedes-benz Lekungen Gmbh

Thyssenkrupp Presta Ag

Edwin Breuning

Karl-Hans Koehler

Bernd Langkamp

Gerd Speidel

Jens Stolzenburg

Kai Vohwinkel

Bernd Schiek

Bernd Schick

Carmine Cioppi

Sascha Boss

Ruediger Rachel

Joachim Bahr

Paul Heinzen

Kurt Linzmaier

A retroactive device as part of a hydraulic servo-steering system that also includes a hydraulic servo-valve device, the retroactive device comprising an arrangement for hydraulically producing a restoring moment into a central position that produces the restoring moment as a function of the pressure differential between a pressure side and a low-pressure side. The system has at least one valve arrangement that, when pressure is applied in the central position of the servo-valve, is adapted to produce a pressure differential between the external and internal chambers of the valve. The valve arrangement is disposed hydraulically in series with the retroactive device.

Retroactive device

The invention concerns a hydraulic power-assisted steering system for motor vehicles, with a valve and two hydraulic lines leading from the valve to cylinders of a servo drive mechanism and with at least one steering damper, the steering damper having a basic body which is arranged movably along a path in a working chamber and delimits with an outer wall of the working chamber a first channel through which hydraulic fluid can flow.

Steering damper for a hydraulic power-assisted steering system

A positioning device for adjusting a motor vehicle operating lever with feedback from the respective position of a controllable part. At least one part is controllable by at least one operating lever in the form of a so-called side-stick. The motor vehicle steerable wheels can be, in particular, the controllable part.

Motor vehicle with at least one part which can be controlled by at least one operating lever

A servovalve, in particular for hydraulic power-assisted steering systems of motor vehicles, is in the form of a rotary spool valve with a rotary spool and a control bush, which coaxially surrounds the rotary spool and can be rotated against spring force relative to the rotary spool. A bearing, by which the control bush and the rotary spool are secured axially relative to one another, is integrated into the rotary spool valve.

Servovalve

A reaction arrangement on a hydraulic servo-valve arrangement which is designed in the manner of a rotary-slide arrangement, with a rotary slide and with a control bush coaxially surrounding the rotary slide and rotatable relative to the latter, in particular for power steering systems of motor vehicles. Arranged on a shaft part located on the rotary-slide side are axial V-grooves, into which reaction bodies can be pressed with controllable hydraulic pressure. The reaction bodies are guided radially on a bush portion connected fixedly in terms of rotation to the control bush.

Feedback system for a servo valve system

Growing community of inventors

Denkendorf, Germany

Edwin Breuning