Abstract: A fluid arrangement for controlling a transmission of a motor vehicle in a hydraulic circuit is disclosed. The fluid arrangement includes a dual clutch including a first sub-clutch and a second sub-clutch, wherein the first sub-clutch is configured to be actuated via a first reversing pump actuator and the second sub-clutch is configured to be actuated via a second reversing pump actuator. The first and second reversing pump actuators each have a first delivery direction and a second delivery direction for delivering a working fluid in the hydraulic circuit. A first gear ratio mechanism with a variable gear ratio for actuating the dual clutch is configured to be actuated via the first delivery direction of the first and second reversing pump actuators a and a second gear ratio mechanism with a variable gear ratio for actuating a consumer arrangement is configured to be actuated via the second delivery direction.

Abstract: An angle-measuring device is provided for a rotationally-driven linear actuator, which can be implemented into a clutch actuator. A rotor element has an axis of rotation and rotates concentrically with a rotor of a rotary drive for an axially movable linear actuator element. A measurement magnet arrangement is fixed relative to the rotor element and has a polarization. The polarization is oriented in such a way that the magnetic field lines can change with a rotation of the rotor element so as to enable the angle to be precisely determined from at least one measurement position. At one location, a 360-degree sensor is provided for measuring angular positions based on the measurement magnet arrangement. At another location, a revolution-counting sensor is provided for counting a number of revolutions carried out based on the measurement magnet arrangement.

Abstract: A belt pulley arrangement for a belt drive to drive auxiliary units of a motor vehicle, having a belt pulley for introducing a torque that can be provided via a flexible drive means, an output shaft for driving an auxiliary unit, in particular a cooling water pump, and an electric machine for the transmission of torque between the belt pulley and the output shaft, wherein the electric machine has a rotor connected to the belt pulley and a stator connected to the output shaft. As a result of the power flow between the belt pulley and the output shaft, which can be influenced by the electric machine, it is not necessary to design the auxiliary unit that is attached via the output shaft for the least beneficial operating point, so that the auxiliary unit can be dimensioned smaller and a reduction in the installation space for motor vehicle components, in particular the installation space for auxiliary units of a motor vehicle that can be driven via the belt drive, is made possible.

Abstract: The invention relates to a master cylinder for an actuating device of a clutch or a brake of a motor vehicle, including a cylinder housing having a pressure cylinder section, as well as a piston mounted movable relative to the cylinder housing, wherein the piston is arranged inside the pressure cylinder section in an actuation state in order to control a fluid pressure in a fluidically sealed pressure chamber by a sealing device on the piston side, and is arranged in a pressureless state such that the pressure cylinder section is fluidically connected to a retention system, wherein a seal of the sealing device is configured, and attached to the piston, such that it rests on a seal protection area of a stop element at least in a parking position in the pressureless state; as well as a method for mounting such a master cylinder.

Abstract: A transmission having a first input shaft, a second input shaft, an output shaft, a first clutch, and a second clutch, wherein each one of the input shafts in connectible to the crankshaft of a drive motor by one of the clutches, wherein each one of the input shafts is connectible to the output shaft by means of gearwheel pairs to transmit torque, wherein a respective actuatable selector fork is provided to connect respective groups of two gearwheel pairs to the input shaft to transmit torque, wherein every gearwheel pair is assigned a transmission ratio, wherein a number of transmission ratios that are gradational relative to one another is provided, wherein the two transmission ratios of a group of gearwheel pairs are a first transmission ratio (N) and the one after the next (N+2), with N an integer number, in particular N=1, 2, 3, 4 or 5.

Abstract: A modular concept is proposed for an actuator, in particular a clutch and/or transmission actuator. An electric motor is provided with a universal flange. Through this flange it is possible to connect an electrohydraulic or electromechanical actuating link. A clutch and/or a transmission setting device can then be actuated by means of the resulting actuator. In particular, for use for an electrohydraulic actuator, the motor housing may also have a receptacle for a pressure sensor. This receptacle may already be closed, or may be closed for the connection to a mechanics module.

Abstract: An actuator having a planetary screw drive (PSD), in particular for the operation of a clutch of a motor vehicle, wherein a plurality of planetary rollers which mesh with a ring gear that encircles the planetary rollers are in contact with a spindle, where the planetary rollers are positioned at both ends in a planetary roller carrier and the planet carriers are supported non-rotatingly in a sleeve that encircles the ring gear and points radially inward at both ends, wherein the sleeve and the planetary carriers supported in it are axially fixed and connected non-rotatingly to a rotor of a drive and are drivable around an axis of rotation, the spindle is supported non-rotatingly and the spindle performs an axial stroke when the rotor and the planetary carriers supported in the sleeve rotate, is provided.

Abstract: An actuation device especially for actuating a transmission for selecting a gear step and engaging and disengaging the selected gear step and/or for actuating at least one clutch. The actuation device includes at least one rotatable roll element that has guide tracks, into each of which a contact element of a selector fork engages to move the selector fork in order to select and engage or disengage a gear step of a transmission, and an actuation region for a clutch actuation means for actuating the at least one clutch.

Abstract: An actuator for actuating a transmission to select a transmission ratio and to engage or disengage the selected transmission ratio and/or for actuating at least one clutch, with a cylindrical control element on which a first ring element for controlling the clutch, a second ring element as a drive element, a third ring element for shift control, and a fourth ring element for shift operation are disposed for rotation, wherein the first ring element is connected to a clutch for actuating the clutch upon a rotation of the first ring element, the second ring element is connected to a drive for rotating the second ring element, the third ring element is provided with actuating means interacting with corresponding actuating means of the first, second, and fourth ring element, and wherein the fourth ring element is connected to shifting elements of a transmission for shifting a transmission ratio.

Abstract: Embodiments of the present invention relate to a component group with a friction device with at least two components that are rotatable relative to one another, in particular for actuating a clutch of a vehicle, wherein a coil spring influencing the degree of efficiency, the friction is disposed between the components that are rotatable relative to one another and wherein the component group with a friction device is integrated in a transmission or an actuator, or both.

Abstract: A freewheel, which has an inner ring, an outer ring that can be rotated relative to the inner ring in at least one rotational direction and which is disposed radially around the inner ring, a plurality of rolling bodies, which are disposed between the inner ring and the outer ring, and at least one rolling body suspension for suspending the rolling bodies in the direction of the inner ring. The rolling body suspension has a spring which overall has a circular shape and is adapted such that the rolling bodies are loaded radially inward in the radial direction of the freewheel. In a plane that is formed by the longitudinal direction and the radial direction of the freewheel, the spring has a substantially rectangular profile.

Abstract: An actuation device especially for actuating a transmission for selecting a gear step and engaging and disengaging the selected gear step and/or for actuating at least one clutch. The actuation device includes at least one rotatable roll element that has guide tracks, into each of which a contact element of a selector fork engages to move the selector fork in order to select and engage or disengage a gear step of a transmission, and an actuation region for a clutch actuation means for actuating the at least one clutch.

Abstract: A belt pulley arrangement for a belt drive to drive auxiliary units of a motor vehicle, having a belt pulley for introducing a torque that can be provided via a flexible drive means, an output shaft for driving an auxiliary unit, in particular a cooling water pump, and an electric machine for the transmission of torque between the belt pulley and the output shaft, wherein the electric machine has a rotor connected to the belt pulley and a stator connected to the output shaft. As a result of the power flow between the belt pulley and the output shaft, which can be influenced by the electric machine, it is not necessary to design the auxiliary unit that is attached via the output shaft for the least beneficial operating point, so that the auxiliary unit can be dimensioned smaller and a reduction in the installation space for motor vehicle components, in particular the installation space for auxiliary units of a motor vehicle that can be driven via the belt drive, is made possible.

Abstract: A switchable free-wheel arrangement for a CVT transmission of a motor vehicle. Clamping bodies held in a cage are disposed between an outer ring and an inner ring. Each clamping body can be pressed with a relatively high force against the inner ring by an energy accumulator. The clamping bodies can be set up in the release direction or in the clamping direction by a switching mechanism. The energy accumulator generates a relative small setup force for setting up the clamping bodies. The energy accumulator includes two torsion springs disposed on the clamping body. It can, however, also have the shape of a helical spring that surrounds the clamping bodies and engages therein in special helical spring grooves.

Abstract: A switchable free-wheel device for a transmission for a crank-driven CVT of a motor vehicle. The device includes at least one free-wheel unit with a drivable outer ring, an inner ring in the form of an output shaft, and clamping bodies disposed between the rings and rotatable about their longitudinal axes. In the axial direction, each of the clamping bodies includes first and second grooves that are axially spaced from each other and offset relative to each other in the peripheral direction of the clamping body. Annular worm springs surrounding the clamping bodies are displaceable in the axial direction of the body by a switching mechanism, such that the springs engage either in the first groove or in the second groove. The clamping body rotates about its longitudinal axis such that the force applied by the worm spring runs on a side of the longitudinal axis.

Abstract: A free wheel, especially for a crank CVT, which has an inner ring, an outer ring that can rotate in at least one rotary direction in relation to the inner ring and is arranged radially around the inner ring, and a plurality of clamping bodies which have a head region and a foot region. The clamping bodies are arranged between the inner ring and the outer ring and can be subjected to the radially inwardly acting elastic force of a peripheral spring engaging in a spring groove, towards the inner ring. The guidance of the clamping bodies is carried out at the same time in the head region and in the foot region, and the clamping bodies are in the form of a cycloid in the head region and the foot region.

Abstract: A freewheel arrangement, in particular for a crank-CVT, which has an inner ring, an outer ring, which can be rotated relative to the inner ring in at least one direction of rotation and which is arranged radially around the inner ring, several cam-shaped clamping elements, which have a foot area and a head area and are arranged between the inner ring and the outer ring in a cage and can be acted on in the direction of the inner ring by a radially inwardly directed spring force of a spring. The spring is a double-acting torsion spring, which simultaneously acts on the head area and the foot area of adjacent clamping elements and presses the clamping elements radially inward.

Abstract: A freewheel arrangement, in particular for a crank-CVT, which has an inner ring, an outer ring, which can be rotated relative to the inner ring in at least one direction of rotation and which is arranged radially around the inner ring, several cam-shaped clamping elements, which have a foot area and a head area and are arranged between the inner ring and the outer ring in a cage and can be acted on in the direction of the inner ring by a radially inwardly directed spring force of a spring. The spring is a double-acting torsion spring, which simultaneously acts on the head area and the foot area of adjacent clamping elements and presses the clamping elements radially inward.

Abstract: A crank-CVT transmission which has a freewheel device connected to an output shaft of the transmission. The device selectively enables and blocks a relative rotation between the device and the output shaft. The transmission further has a switching unit adapted to switch the device and an internal shaft, which can be connected to the output shaft and by a connecting element to a differential. The internal shaft can be displaced in the axial direction of the output shaft. The transmission further has an actuator interacting with the switching unit and adapted to initiate the switch of the device. The actuator has a first mechanism adapted to displace the internal shaft in the axial direction, disconnecting the internal shaft from the differential a second mechanism adapted to drive the switching unit. The second mechanism is coupled to the first mechanism and is driven after the first mechanism.

Abstract: A free wheel, especially for a crank CVT, which has an inner ring, an outer ring that can rotate in at least one rotary direction in relation to the inner ring and is arranged radially around the inner ring, and a plurality of clamping bodies which have a head region and a foot region. The clamping bodies are arranged between the inner ring and the outer ring and can be subjected to the radially inwardly acting elastic force of a peripheral spring engaging in a spring groove, towards the inner ring. The guidance of the clamping bodies is carried out at the same time in the head region and in the foot region, and the clamping bodies are in the form of a cycloid in the head region and the foot region.