Hydraulic clutch actuation system

Details Hydraulic clutch actuation system Hydraulic clutch actuation system

2011-01-04

2011-01-04

Bonck, Rodney H (Department: 3655)

192 clutches and power-stop control

Clutches

Plural clutch-assemblage

C192S048609, C192S048800, C192S085630

Reexamination Certificate

active

07861837

ABSTRACT:
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.

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Translation of EP 1 236 918 A1, Schneider et al., Sep. 2002.

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