August Bilstein Gmbh & Co Kg

Wolfgang Grun

Bodo Futterer

Jurgen Mayer

Reinhard Holscher

Peter Wolf

A variable dashpot for motor vehicles A cylinder (2) full of vibration-suppressing fluid accommodates a piston (3). The piston is provided with vibration-suppressing valves, is fastened to a piston rod (8), and separates the cylinder into two compartments. The compartments communicate through a bypass. The cross-section of the bypass can be adjusted with a component (11) comprising a stator (12) with windings (13) and an electric motor (10) with a rotor (17). The improvement comprises making it possible to continuously and highly dynamically vary the cross-section of the bypass in a dashpot of the same size. This is attained in that the stator windings are accommodated directly in a recess (9) in the piston rod, which is made out of a material that can be magnetized, and the rotor is provided with permanent magnets (22), activates the adjusting component (11), and is accommodated in a bore in the stator (12).

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Ennepetal, Germany

Wolfgang Grun