A multi-plate clutch, in particular a dual-plate clutch, for coupling a drivetrain of a motor vehicle engine having at least one transmission input shaft, in particular for a dual clutch is provided, having a counter plate for introducing a torque from the driveshaft, a clutch plate for channeling the torque to the transmission input shaft, the clutch plate having a first lining ring for frictionally engaged torque transfer and a second lining ring which is movable axially relative to the first lining ring for frictionally engaged torque transfer, a separator plate which is movable axially relative to the counter plate, the separator plate being positioned between the first lining ring and the second lining ring in the axial direction, and a contact plate which is movable axially relative to the counter plate by an actuating element to frictionally compress the clutch plate, the first lining ring being positioned between the contact plate and the separator plate in the axial direction and the second lining ring being positioned between the separator plate and the counter plate, there being n separator plates and n+1 lining rings provided, the movement of the separator plate in the axial direction being coupled with the movement of the contact plate in the axial direction by means of a coupling mechanism, where over at least part of the distance between an open position of the contact plate corresponding to the disengaged position of the multi-plate clutch and a maximum closed position of the contact plate corresponding to the engaged position of the multi-plate clutch when the lining rings are worn, a current distance translation ratio i(s.sub.A) of the axial displacement of the contact plate to the axial displacement of the separator plate which is furthest distant in the axial direction from the contact plate at an axial position s.sub.A of the contact plate deviates from i(s.sub.A)=n+1, and/or a current distance translation ratio i(s.sub.A).sub.j of the axial displacement of the contact plate to the axial displacement of a jth separator plate at an axial position s.sub.A of the contact plate deviates from i(s.sub.A).sub.j=(n+1)/j where j is counted starting from the counter plate in the direction of the contact plate. Because the distance translation ratio of the coupling mechanism deviates from n+1, the multi-plate clutch can easily be adapted to differently-dimensioned lining rings, so that transmission of an especially high torque is enabled with the help of a friction clutch with different configurations of a motor vehicle drivetrain.

The invention relates to a friction clutch for a drivetrain of a motor vehicle, having a contact plate that is movable relative to a pressure plate and a clutch disk to engage and disengage the clutch, and having an actuating element that influences the contact plate displacement position and is non-rotatably connected to the contact plate. The actuating element has at least one fluid diverting section which, in an operating state of the clutch, introduces a cooling fluid into the interior of the clutch to cool the contact plate, pressure plate, and/or clutch disk. The actuating element is preferably designed as a rigid component and for a system consisting of such a friction clutch and a transmission bell housing.

A counterbalance for balancing a part that is able to rotate about an axis of rotation is disclosed, in particular a part of a torque transmission device, such as a friction clutch unit. The counterbalance has a longitudinal axis and a shaft section that includes a knurled portion with ridges that are inclined in relation to the longitudinal axis. Also disclosed is a torque transmission device, in particular for a drive train in a motor vehicle, including an axis of rotation and at least one part that is able to rotate about the axis of rotation. In this torque transmission device, at least one counterbalance of said type is arranged on the part for balancing purposes.

A touch point correction method includes determining respective temperatures of a first pressure plate, a second pressure plate, and a center plate and measuring an average temperature of the determined temperatures, determining rotational inertia based on the measured average temperature, determining a touch point correction amount based on the rotational inertia and engine speed of a vehicle, and correcting a touch point of a relevant clutch using the determined touch point correction amount.