Patent ID: 7631740

Claim:
Hydraulic control device for an automatic dual-clutch transmission having a first clutch and a second clutch, said hydraulic control device comprising: a control valve unit setting at least one hydraulic parameter from the group consisting of pressure and volume flow for actuating the first and second clutches, said control valve unit comprising: a first control valve a second control valve, and a switching valve unit, wherein by means of the control valve unit the clutches can be separated from the control valve unit; the switching valve unit comprising: a first switching valve, and a second switching valve, wherein the first and second switching valve can both be operated by means of a control signal; a separating valve, that in a separating position, provides an additional control signal to the first switching valve and the second switching valve, so that the first switching valve, in a position B I , and the second switching valve, in a position B II , separate the first and second clutches from the control valve unit, wherein at least one further control signal can be directed to the first switching valve causing it to assume a position A I irrespective of the position of the separating valve, in which position A I the first clutch is connected to and can be operated by the control valve unit.