Sachs Systemtechnik Gmbh

Rudolf Peschel

Rudy Tellert

The controllable drive for a movable releaser of a friction clutch which couples a transmission of a motor vehicle with its internal combustion engine comprises an electric motor and a force-transmission device converting the rotating movement of a drive-output shaft of the electric motor into the actuating movement of the releaser. In the force path of the force-transmission device there is arranged a hydraulic servo-unit, but preferably a suction-pneumatic servo-unit, which transfers the movement of its input element into a proportional movement of its output element and transmits the force exerted upon the input element in boosted form to the output element. In the force transmission in the disengagement direction, the input element abuts on the output element directly or through a likewise movable additional element of the servo-unit, in order to be able to disengage the clutch even when the internal combustion engine is stopped. By reason of the servo-unit the electric motor can be of smaller dimensions. Nevertheless the clutch can be engaged and disengaged quickly.

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Poppenhausen, Germany

Rudolf Peschel