Abstract: A multiple clutch for a drivetrain of a motor vehicle includes an a axis of rotation, a first clutch, a second clutch, and an encoder part. The first clutch has a first clutch first component and a first clutch second component selectively rotationally connectable to the first clutch first component. The second clutch has a second clutch first component and a second clutch second component selectively rotationally connectable to the second clutch first component. The encoder part has a rotational speed or rotational position detection geometry, is arranged to be operatively connected to a sensor, and is used as a connecting element which rotationally conjointly connects the first clutch first component to the second clutch first component.

Abstract: A friction surface includes at least one groove for dissipating a tempering medium, in that the groove has a stepped profile to constitute a fluidic resistance for the tempering medium. The tempering medium may be a cooling medium such as cooling oil. The stepped profile is, for example, achieved by stair-like delimitation lines of the groove. The stepped profile slows down a fluid flow of the tempering medium, in particular a cooling fluid, in particular through a plate pack of a multiplate clutch. In other words, the tempering medium or cooling fluid or cooling oil is braked. The slowed tempering medium can absorb heat over a longer period, in order to dissipate this heat from the friction surface or from the friction surface and a counter-surface in a plate pack. In this way, the cooling capacity can be improved.