Getrag Ford Transmissions Gmbh

Getrag Ford Transmission Gmbh

Georg Hillebrand

Reinhard Moehlmann

Christian Krauss

Marco Siebigteroth

Stefan Kirschstein

Stephan Bungart

A method of feeding a clutch cylinder in a hydraulically actuated clutch system in a motor vehicle and a respective hydraulically actuated clutch system are suggested. The clutch system comprises at least one clutch that can be closed by filling the clutch cylinder; and a hydraulic system that provides a system pressure and has a clutch control valve having an inlet and an outlet. A system pressure is applied at the inlet of the control valve; the clutch pressure for actuating the clutch is provided at the outlet; and the system pressure is decreased pressure prior to and during the filling of the clutch cylinder. The decreased system pressure allows a high volume flow and therefore a fast filling of the clutch cylinder without establishing a premature torque transmitting capacity in the clutch.

Method of feeding a clutch cylinder of a hydraulically actuated clutch system

A sensor arrangement ( ) for determining the selector drum position of a selector drum, in particular of a transmission controller, having a sensor disc ( ) that is operatively connected to the selector drum and identifies different selector states by means of a running track ( ), and a sensing device ( ) that continuously senses the running track ( ) in order to register the position data from the running track ( ) which identifies the switching states.

Sensor arrangement for determining selector drum position

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Roesrath, Germany

Georg Hillebrand