Patent ID: 7351175

Claim:
Drive train for a motor vehicle, comprising a coupling device operatively arranged between a drive unit and a transmission and being a unit separate from and coupled to the transmission for torque transfer between the drive unit and the transmission, the coupling device having at least one coupling arrangement configured to be activated by a pressure medium, for operation under the influence of an operating medium, and the transmission being configured to be activated by the pressure medium via a dedicated actuator, whereby, with a shared pump arrangement having at least one pump, which is independently regulatable with regard to at least one of output pressure and output flow rate that is drivable by the drive unit so as to develop a desired pressure based only on the regulation of the at least one pump, (i) the pressure medium is providable for activation of the coupling arrangement, (ii) the operating medium is conductible to the coupling device for operating under the influence of the operating medium, and (iii) the pressure medium is providable for activation of the transmission, wherein a first pressure accumulator arrangement is allocated to the activation of the coupling device, and a second pressure accumulator arrangement is allocated to the activation of the transmission with both pressure accumulator arrangements being provided within a hydraulic system and the coupling arrangement comprises a wet clutch coupling arrangement, the wet clutch operation of which takes place under the influence of the operating medium, and the operating medium is an operating fluid.