Abstract: The disclosure relates to a disk (38) for a disk clutch (26) comprising an annular base element (76) which has a toothing (78) with multiple teeth (80) for achieving a rotary driving engagement with a disk carrier (34), wherein the base element (76) has at least one hardened region (96) in which the base element (76) is designed as harder than in the tooth flank regions (98, 100) of the teeth (80). In addition, the disclosure relates to a disk clutch (26) with such a disk (38), a double clutch device (2) with such a disk clutch (26), and a method for producing such a disk (38).

Abstract: The present invention relates to a disk (38) for a disk clutch (26) comprising an annular base element (76) which has a toothing (78) with multiple teeth (80) for achieving a rotary driving engagement with a disk carrier (34), wherein the base element (76) has at least one hardened region (96) in which the base element (76) is designed as harder than in the tooth flank regions (98, 100) of the teeth (80). In addition, the present invention relates to a disk clutch (26) with such a disk (38), a double clutch device (2) with such a disk clutch (26), and a method for producing such a disk (38).

Abstract: A multiplate clutch, in particular a starting clutch in a motor vehicle, has primary-side plates which are connected to a drive unit and secondary-side plates which are connected to a drivetrain, in particular to a transmission input. The primary-side and/or secondary-side plates are aligned, in each case with regard to their flatness deviations, with respect to one another, that is to say are arranged so as to be rotated relative to one another in the peripheral direction, such that at least the flatness deviations of adjacent plates do not abut against one another in the axial direction.

Abstract: A multiple disk clutch device for arrangement in a drivetrain of a motor vehicle between a drive unit and a transmission, includes at least an inner and an outer disk clutch arrangement that are radially staggered and associated with a transmission input shaft of the transmission. Each of the plural clutch disk arrangements includes a set of disks, the set of disks have an outer disk associated with an outer disk carrier and an inner disk associated with an inner disk carrier. The outer disks are operable to mutually engage the inner disks in a driving arrangement. Each of the plural disk sets includes at least one disk having a lining and at least one disk being unlined where one of the inner and outer disks of the inner and the outer disk clutch arrangements of the plural disk clutch arrangements is the lined disk.

Abstract: A rotary driving insertion connection, particularly for transmitting torque in a drivetrain of a motor vehicle between components or units of the drivetrain which are connected or are to be brought into a connection for transmitting torque, comprises a primary-side coupling area at a first component and a secondary-side coupling area at a second component. One of the coupling areas has a cutout which is defined by an inner circumference or at least an inner circumferential portion, and the other coupling area has at least one projecting portion having an outer circumference or at least an outer circumferential portion which is inserted or can be inserted into the cutout axially with reference to an axis of rotation in order to provide a positive rotary driving engagement between the inner circumference and the outer circumference. A plurality of coupling elements producing the positive rotary driving engagement is provided between the inner circumference and the outer circumference.

Abstract: A dual clutch arrangement including two clutch areas, each with a pressure plate connected to a housing arrangement for rotation in common around an axis of rotation (A) and which can be shifted in the axial direction with respect to the housing; and a clutch disk, the friction surface areas of which can be clamped between the respective pressure plate and an opposing support arrangement. Each of the clutch disks is designed to be connected nonrotatably to a different power takeoff element. In addition a clutch cooling arrangement, through which a coolant can flow, is installed adjacent to the clutch areas.

Abstract: A clutch system includes a clutch device with at least one clutch arrangement for installation in a motor vehicle drive train between a drive unit and a transmission. The at least one clutch arrangement is actuated by a slave cylinder using a pressure medium which is supplied to the clutch device by a first pump. A further medium is also supplied to the clutch device by a second pump arrangement as an operating medium used during operation of the clutch device. The further medium is selectively supplied as a pressure medium to the slave cylinder.

Abstract: A force-exerting element for a friction clutch includes a ring-like body with an outer edge area and an inner edge area. Openings provided in the body include a first group of openings open toward the outer edge area and a second group of openings open toward the inner edge area. The radial extent of circumferentially adjacent openings of the first group of opening and of the second group of openings overlap each other in the radial direction at the ends facing way from their associated edge areas or extend along approximately the same radial area. A radial support arrangement is arranged on the body to provide at least certain areas of support in the radial direction against the effects of centrifugal force.

Abstract: A clutch operator arrangement for introducing an actuating force into a friction clutch includes a ball screw arrangement.

Abstract: The invention is directed to a dual clutch device or multiple disk clutch device for arrangement in a drivetrain of a motor vehicle between a drive unit and a transmission, wherein the clutch device (12a) has a plurality of radially staggered disk clutch arrangements (64a, 72a) which are associated, respectively, with a transmission input shaft (22a and 24a) of the transmission and are constructed, respectively, with a disk set (74a and 76a) having outer disks associated with an outer disk carrier (62a and 70a) and inner disks which can be brought into mutual driving engagement with the outer disks and which are associated with an inner disk carrier (82a and 86a), wherein every disk set has disks with linings and without linings which are constructed either as outer disks or as inner disks.

Abstract: Multi-clutch arrangement, comprising at least two clutch areas, each with a pressure plate, which can be connected to a housing for rotation in common around an axis of rotation (A) and which can be shifted in the axial direction relative to this housing; with an opposing support; and with a clutch disk, the friction surface arrangement of which can be clamped between the pressure plate and the opposing support. Each of the clutch disks is designed to be connected nonrotatably to a different power takeoff element. A wear-compensating device is assigned to at least one of the clutch areas. In at least one of the clutch areas, the pressure plate is connected to the housing for rotation in common by way of a connecting element arrangement, which, when the clutch area is in the torque-transmitting state, exerts a force on the pressure plate arrangement acting in the direction toward the opposing support.

Abstract: A dual clutch arrangement including two clutch areas, each with a pressure plate connected to a housing arrangement for rotation in common around an axis of rotation (A) and which can be shifted in the axial direction with respect to the housing; and a clutch disk, the friction surface areas of which can be clamped between the respective pressure plate and an opposing support arrangement. Each of the clutch disks is designed to be connected nonrotatably to a different power takeoff element. In addition a clutch cooling arrangement, through which a coolant can flow, is installed adjacent to the clutch areas.

Abstract: A rotary driving insertion connection, particularly for transmitting torque in a drivetrain of a motor vehicle between components or units of the drivetrain which are connected or are to be brought into a connection for transmitting torque, comprises a primary-side coupling area at a first component and a secondary-side coupling area at a second component. One of the coupling areas has a cutout which is defined by an inner circumference or at least an inner circumferential portion, and the other coupling area has at least one projecting portion having an outer circumference or at least an outer circumferential portion which is inserted or can be inserted into the cutout axially with reference to an axis of rotation in order to provide a positive rotary driving engagement between the inner circumference and the outer circumference. A plurality of coupling elements producing the positive rotary driving engagement is provided between the inner circumference and the outer circumference.

Abstract: A ball screw includes a spindle element which has a first groove arrangement on an outer circumferential surface, a nut element which surrounds the spindle element and has a second groove arrangement on an inner circumferential surface, and a plurality of balls, at least some of which engage into the first groove arrangement and the second groove arrangement. The nut element is rotatable about an axis of rotation with respect to the spindle element, and, during the rotation of the nut element about the axis of rotation with respect to the spindle element, the balls which engage into the first groove arrangement and the second groove arrangement roll in the first and the second groove arrangement, while at the same time rotate about respective ball axes of rotation.

Abstract: A clutch system includes a clutch device with at least one clutch arrangement for installation in a motor vehicle drive train between a drive unit and a transmission. The at least one clutch arrangement is actuated by a slave cylinder using a pressure medium which is supplied to the clutch device by a first pump. A further medium is also supplied to the clutch device by a second pump arrangement as an operating medium used during operation of the clutch device. The further medium is selectively supplied as a pressure medium to the slave cylinder.

Abstract: A clutch operator arrangement for introducing an actuating force into a friction clutch includes a ball screw arrangement.

Abstract: A ball screw includes a spindle element which has a first groove arrangement on an outer circumferential surface, a nut element which surrounds the spindle element and has a second groove arrangement on an inner circumferential surface, and a plurality of balls, at least some of which engage into the first groove arrangement and the second groove arrangement. The nut element is rotatable about an axis of rotation with respect to the spindle element, and, during the rotation of the nut element about the axis of rotation with respect to the spindle element, the balls which engage into the first groove arrangement and the second groove arrangement roll in the first and the second groove arrangement, while at the same time rotate about respective ball axes of rotation.

Abstract: Torque transmission unit includes an input shaft and an output shaft with a torsion damping device functionally arranged between the input shaft and an output shaft. A shift clutch is also operatively arranged between the input shaft and the output shaft for selectively varying the torque transmitted from the input shaft to the output shaft. The torsion damping device has at least a primary mass and a secondary mass, the primary mass being effectively connected to the input shaft and the secondary mass being effectively connected to the output shaft. The torque transmission unit further comprises an electric machine with a stator and a rotor effectively connected to the input shaft. At least one of the shift clutch and the torsion damping device is arranged within an annular space delimited by the rotor and the stator of the electric machine.

Abstract: The invention concerns oxidised aluminium or aluminium alloy pigments having a content of metallic aluminium of not more than 90% by weight with respect to the total weight, wherein the pigments are colored, flake-like, shiny and non-agglomerated, a process for the production thereof and use thereof as special-effect pigments and as base pigments for further colouring with organic or inorganic color pigments.

Abstract: The invention concerns colored aluminum pigments comprising flake-form aluminum substrates which are coated with a metal oxide layer. The pigments are produced by a process which involves the steps of mixing a ground color pigment with a flake-form aluminum in the presence of a solvent. A metal acid ester is then added to the mixture and is then hydrolyzed to form a metal oxide layer on the aluminum substrate, followed by removal of the solvent and drying of the pigment. The pigments are useful as special-effect pigments in paints, lacquers, coatings, plastic materials, printing inks and cosmetic preparation.