Patent ID: 8672108

Claim:
A drive train comprising: a torque converter, which is operatively connected with an input through a clutch, wherein the clutch comprises an emergency operation actuation device with at least one emergency operation actuation element, which defines a centrifugal oil cavity, which comprises oil and is coupled with the input, wherein: the clutch is configured as a wet operating disc clutch with a piston; the clutch is actuatable by the piston through pressure loading; the piston defines the centrifugal oil cavity of the emergency operation actuation device and the piston is coupled non-rotatably, but axially movable, with a clutch hub; the centrifugal oil cavity is defined by a centrifugal oil cavity defining wall and the piston is moveable in an axial direction relative to the centrifugal oil cavity defining wall; and, the centrifugal oil cavity defining wall is coupled non-rotatably but axially movable with the clutch hub.