Multiple-clutch device

Multiple-clutch device, for installation in a drivetrain of a motor vehicle between a drive unit and a transmission, comprising a first clutch arrangement associated with a first transmission input shaft of the transmission, and a second clutch arrangement associated with a second transmission input shaft of the transmission for transmitting torque between the drive unit and the transmission, in which at least one of the clutch arrangements being a plate clutch arrangement including a stack of plates, there being at least one wall which shields an interior space of the clutch device, said wall being arranged in a torque transmission path between an input side of the clutch device and an output side of one of the clutch arrangements, said one wall having one of a radial outer area and a central area thereof, at least one of a pressure compensation opening and a cooling fluid outlet opening for supply to said at least one clutch plate arrangement of a cooling fluid from a cooling fluid supply, the at least one wall comprising a wall portion which has at least one of a pressure compensation opening and a cooling fluid outlet opening, and which further is used for transmission of a torque between a plate carrier and an input side of the clutch device, a conducting element for reinforcing a flow of the cooling fluid through the plates being provided axially proximal to the one of the pressure compensation opening and the cooling fluid outlet opening of the wall portion, said conducting element comprising one of an axial outer plate of said at least one plate clutch arrangement having a fluid conducting portion and a wall portion located farther outward radially relative to at least one of the pressure compensation opening and/or cooling fluid outlet opening.

Multiple-clutch device, for installation in a drivetrain of a motor vehicle between a drive unit and a transmission, comprising a first clutch arrangement associated with a first transmission input shaft of the transmission, and a second clutch arrangement associated with a second transmission input shaft of the transmission for transmitting torque between the drive unit and the transmission, in which at least one of the clutch arrangements is constructed as a plate clutch arrangement, a plate stack of said one plate clutch arrangement including steel plates, certain of said plates having no facing and other plates having sintered friction facings, an inner plate carrier, and an outer plate carrier of the plate clutch arrangement being constructed such as to allow a supply of at least one flow of a cooling fluid from a cooling fluid supply to enter between plates of the plate stack from a clutch radial inner side during at least one operating state of the clutch arrangement, with the cooling fluid flowing directly against at least one of said steel plates having no facing and said other steel plates having a sintered facing, said cooling fluid flowing directly along the plates having sintered facing in radial outward direction, at least one passage opening in an inner plate carrier of said one clutch arrangement overlaps an axial area occupied by plates of the said one clutch arrangement when said one clutch arrangement is in at least one of an engaged and a disengaged state is allocated to direct cooling fluid flow to the respective ones of said steel plates and plates having the sintered facing, at least one passage opening in an outer plate carrier of said one clutch arrangement is allocated to said respective ones of steel plates and plates having sintered facing against which the cooling fluid flows, the said one outer plate carrier passage opening being one of aligned with and axially offset relative to said one inner plate carrier passage when the clutch arrangement is in at least one of an engaged and a disengaged state, passage openings in the inner plate carrier which are associated with different ones of plates are offset relative to one another in a circumferential direction and passage openings in the outer plate carrier which are associated with different ones of plates are offset relative to one another in a circumferential direction.

Multiple-clutch device, for installation in a drivetrain of a motor vehicle between a drive unit and a transmission, comprising a first clutch arrangement associated with a first transmission input shaft of the transmission, and a second clutch arrangement associated with a second transmission input shaft of the transmission for transmitting torque between the drive unit and the transmission, in which at least one of the clutch arrangements is constructed as a plate clutch arrangement including a stack of plates, said one clutch arrangement having an inner plate carrier and an outer plate carrier, said at least one clutch arrangement being constructed such as to allow a supply of at least one flow of a cooling fluid from a cooling fluid supply to enter between the plates of the plate stack from the radial inner side and flow out from the plate stack such that forces are exerted on the plates through the intermediary of the cooling fluid which tend to effect disengagement of the plate clutch arrangement, the cooling fluid flow path including a part for flow of cooling fluid in a first axial direction to an actuating piston of said one plate clutch arrangement and such to pass a plate stack end plate on the actuating piston side of the said one clutch arrangement and, cooling fluid flow path parts for flow are provided radially between the outer plates of the plate stack and the inner plate carrier, and additionally cooling fluid flow in a radial direction between adjacent plates of the plate stack and, cooling fluid flow radially between the inner plates of the plate stack and the outer plate carrier with additional cooling fluid flow in a radial direction through passage openings in the outer plate carrier.