Abstract: A hydrodynamic clutch device used to establish and to release a working connection between a drive and a takeoff is disclosed. The device includes a housing capable of rotating around an axis of rotation, the housing containing a torus space, which forms a torus volume (TV) with a pump wheel and a turbine wheel, and a clutch space, which forms the boundaries of the clutch volume (CV) and which encloses a mechanical transmission circuit including a bridging clutch designed with a torsional vibration clamper. During the course of the minimum resting phase of the housing, the fluid which is distributed throughout the housing during the operating state decreases from a total volume comprising at least the torus volume (TV) and the clutch volume (CV) to a resting volume (RV), which is located at least essentially underneath the axis of rotation as a result of the force of gravity. A volume reduction arrangement is provided to the housing to reduce the clutch volume (CV) versus the resting volume (RV).

Abstract: A hydrodynamic clutch arrangement includes a clutch housing in which at least one hydrodynamic circuit formed by at least one pump wheel and one turbine wheel is provided. A bridging clutch can be actuated to produce an engaging movement to establish a working connection between a drive and a takeoff and to produce a disengaging movement to release this working connection. The hydrodynamic circuit and at least one pressure space are each connected by a flow route to pressure medium reservoir for actuating the clutch. At least one flow route serving to the fill the clutch housing is provided with a device for reducing the flow volume, which opens during the operating state to unblock the flow route but closes during the non-operating state to delay, at least, the drop in the internal pressure inside the clutch housing and thus in its filling volume.

Abstract: A hydrodynamic clutch arrangement includes a clutch housing which can rotate about an axis of rotation; a hydrodynamic circuit formed by a pump wheel and a turbine wheel in the clutch housing; and a bridging clutch which can be actuated to establish and release a working connection between a drive and a takeoff. First flow routes connect the hydrodynamic circuit and a pressure space to at least one pressure medium reservoir, wherein said first flow routes serve to fill the clutch housing with pressure medium for actuating the bridging clutch. A second flow route carries pressure medium out of the clutch housing during an operating state, and a flow reducer in the second flow route closes to at least impede flow out of clutch housing in a non-operating state.

Abstract: A hydrodynamic clutch device used to establish and to release a working connection between a drive and a takeoff is disclosed. The device includes a housing capable of rotating around an axis of rotation, the housing containing a torus space, which forms a torus volume (TV) with a pump wheel and a turbine wheel, and a clutch space, which forms the boundaries of the clutch volume (CV) and which encloses a mechanical transmission circuit including a bridging clutch designed with a torsional vibration damper During the course of the minimum resting phase of the housing, the fluid which is distributed throughout the housing during the operating state decreases from a total volume comprising at least the torus volume (TV) and the clutch volume (CV) to a resting volume (RV), which is located at least essentially underneath the axis of rotation as a result of the force of gravity. A volume reduction arrangement is provided to the housing to reduce the clutch volume (CV) versus the resting volume (RV).