Luk Lamellen Und Kupplungsbau Beteiligungs Kg

Schaeffler Technologies Ag & Co .kg

James Antony Lethbridge

Peter Riemer

Leigh Fraser

David Anthony Harries

Burkhard Pollak

Ian Richard Joseph Bates

Neil McNab

Terry Morgan

Paul Vincent Rouse

Michael Cooper

Andrew Murray Watkins

Melvin Dyke

A hydraulic clutch actuation system is provided having a hydraulic clutch control device which includes one first clutch master cylinder that communicates via a first pressure-medium line with a first clutch slave cylinder, which is used for actuating a first clutch device, and a second clutch master cylinder that communicates via a second pressure-medium line with a second clutch slave cylinder used for actuating a second clutch device, the pressure prevailing in the first and/or in the second pressure-medium line being relievable via at least one emergency release valve device to permit disengagement of at least one of the clutch devices in an emergency situation. The emergency release valve device includes a 4/2-way directional control valve which has a connection for the first pressure-medium line, a connection for the second pressure-medium line, a connection for a first pressure-relief line, which is connectable via the 4/2-way directional control valve to the first pressure-medium line, and a connection for a second pressure-relief line, which is connectable via the 4/2-way directional control valve to the second pressure-medium line.

Hydraulic clutch actuation system

A hydraulic clutch actuation system having a hydraulic clutch control device which includes at least one clutch master cylinder that communicates via a pressure-medium line with a clutch slave cylinder used for actuating a clutch device, the pressure prevailing in the pressure-medium line being relievable via at least one emergency release valve device to permit disengagement of the clutch device in an emergency situation. The hydraulic clutch actuation system is distinguished in that the emergency release valve device has a seal-carrier device for a sealing element which is movable in response to an electromagnet out of an open position, in which a pressure-medium inlet is open, into a closed position in which the sealing element seals the pressure-medium inlet.

A gearbox actuator comprising a selector shaftwhich is arranged in a housing and is driven by a drive. A shift fingerand disengaging shaped elementsused to actuate gearshift rails are arranged on the selector shaft, and jibs for-supporting and guiding the gearshift rails are arranged on the housing. The gearbox actuatorcomprises the central selector shaftmounted in bearing elementsand comprises a shift fingerand two disengaging shaped elementsarranged in the center thereof, at a distance corresponding to the width of a channel. Preferably, the selector shaftis driven by a brushless motorby means of a double planetary stageand a toothed segmentwhich engages a toothed wheelthat is preferably positioned in a housing element. A preferably second brushless motordrives a sliding elementby means of spindle, the sliding element displacing the shift fingerand the disengaging shaped elementson the selector shaft

Gearbox actuator comprising a bearing for the gearshift rails

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Warwickshire, United Kingdom

James Antony Lethbridge