Abstract: A device for rotationally fixing a shaft to a component that is rotatably arranged on the shaft. The actuating element positively engages the components to rotationally fix the components to the shaft. The difference in rotational speeds, between the component and the shaft, can be at least approximately compensated for by the actuating element. The actuating element, for rotationally fixing the component to the shaft by the actuator, is operatively connected to at least one support body, which is rotationally fixed with respect to the shaft in such a manner that the actuating element can act upon the component with an actuating force that depends on the torque to be transmitted from the shaft to the component and which is independent of the actuation of the actuator in the state in which the actuating element can be rotated relative to the shaft.

Abstract: A double clutch transmission with two clutches connected to a drive shaft and to one of two transmission input shafts. Fixed gears are coupled to the input shafts and engage idler gears. Several coupling devices connect the idler gears to a countershaft which have an output gear that couple gears of an output shaft such power shift forward gears and a reverse gear can be shifted. Two dual gear planes each comprising one fixed gear which is supported by an input shaft and two idler gears which are supported by a respective countershaft. In each dual gear plane at least one idler gear wheel can be used for at least two gears. Two single gear planes each comprise an idler gear wheel and a fixed gear wheel, so that at least one winding-path gear can be shifted via the shifting device and one winding-path gear via another shifting device.

Abstract: A method is proposed for blocking inadmissible gearshift processes in a transmission with a plurality of shifting devices which, to carry out a shift process, are moved by actuating devices when a shift command is sent by a control unit (TCU) to the relevant actuating device. The actuating devices are connected for data exchange with one another and with the control unit (TCU) in such manner that the actuating device of the shifting device to be shifted is activated provided that clearance has been given by at least one other actuating device.

Abstract: A device for actuating a gearwheel of a transmission device. The gearwheel rotates on a shaft and can be shifted by way an engagement mechanism that includes at least one actuator that is arranged at least partially inside the shaft. The actuator can be actuated by a pressure medium to fix the gearwheel to the shaft. The actuation force required for engaging or disengaging the gearwheel can come from within the shaft. The actuator is a piston-cylinder unit which is either rotationally fixed to the shaft or rotationally fixed relative the shaft. When the actuator is rotationally fixed relative to the shaft, the active connection between the actuator and the gearwheel, which is to be shifted, includes a drive decoupling unit between the actuator and the shaft.

Abstract: An electromechanical actuating assembly for at least an actuator element of a vehicle transmission with at least a drive device which is coupled with to an actuator device to activate an actuator element. The actuator device comprises of a toggle lever mechanism which is actuated by a ramped contour.

Abstract: A device for connecting, in a rotationally fixed manner, a shaft to at least one component which is rotationally supported on the shaft, such as a gear wheel of a gear in a transmission. The device includes an actuating element that is rotationally fixed, but axially slides on the shaft, such that when the element is actuated by an actor, the element actively, frictionally communicates with the component to at least approximately equalize a rotational speed difference, between the component and the shaft. The actuating element can be actuated by the actor with a force to frictionally connect the component to the shaft in a rotationally fixed manner. The device further includes a holding device, which retains the actuating element in a shift condition essentially equivalent to the rotationally fixed condition of the component without further actuation of the actor.

Abstract: A transmission configuration for a vehicle with at least a wet clutch (7) functioning as starting element. A coolant and a lubricant supply is provided via at least a pump device (5) which can be driven by a drive motor (1) of the vehicle. The pump device (5) can be driven in such a way that the conveyed flow volume of the pump device (5) is proportional to the rotational speed difference between the rotational speed of the drive motor (1) and the rotational speed of the clutch (7) which is designed and functions as the starting element.

Abstract: A double clutch transmission with two clutches that have inputs connected to a drive shaft and outputs which are each connected to one of first and second transmission input shafts. Fixed gears are coupled to the input shafts and engage idler gears. Several coupling devices connect the idler gears to a respective countershaft which have an output gear that couples with an output shaft such that forward and reverse gears can be shifted. First and second dual gear planes each comprise two idler gears supported by a respective countershaft, and one fixed gear. In each of the first and the second gear planes, at least one idler gear is used for two gears. First and second single gear planes each comprise an idler gear and a fixed gear such that at least one winding-path gear can be shifted via at least one, non-engaged coupling device, assigned to one of the output gear.

Abstract: A transmission device has at least two change-under-load shift elements with transmission capacities that are varied an actuation device. A method for operating a drive train including transmission and drive engine includes a step that when the transmission is shifted, one of the shift elements, which is engaged in the force flow, is disengaged by the actuation device and the other shift element, which is engaged, is disengaged. The actuation device includes an actuator which applies an actuating force to actuate the shift elements and a coupling device by which the actuator communicates with the shift elements to actuate them, such that an actuating force of the actuator, which is actuating the shift element to be disengaged, can be reduced, while an actuating force of the actuator, which is actuating the shift element to be engaged can simultaneously be increased.

Abstract: A transmission device (1) including at least one shift element (3, 4) that can be actuated via an actuator (6) having at least one electrical component (5). The electrical component (5) is connected to a transmission shaft (7), rotates during operation at the rotational speed of the transmission shaft (7), and is operatively connected to further components of the transmission device (1), via an electrical transmitting device (8). Electrical energy can be exchanged, at the least, inductively via the transmitting device (8) between the components of the transmission device (1) and the at least one electrical component (5) connected to the transmission shaft (7). Hydraulic actuating pressure can be generated, via the electrical component (5), for actuating the shift element (3, 4).

Abstract: A transmission device (1) having a switching element, which is actuated by at least one electric component (5, 17) which is part of an actuator (4). The electric actuator component is linked to a countershaft (3) of the transmission and rotates at the speed of countershaft (3) during operation, and is functionally connected through an electric transformer rotary transformer device (15) with further enclosure mounted components of the transmission device (1). Via the transformer device (15), electric energy and/or data can be exchanged, through collector ring contacts, using inductive or capacitive coupling between the enclosure mounted components of transmission device (1) and at least one electric actuator component (5, 17) which is linked with the countershaft (3).

Abstract: A method and a device for controlling the oil supply of an automatic transmission (gearbox) and to a starting element. The method can guarantee a sufficient supply of oil to a hydraulic control unit of the automatic transmission and/or the starting element, in particular an oil-cooled friction clutch, both during the operation of the internal combustion engine (4) and when the latter is at a standstill with the aid of an oil pump (2) that can be mechanically driven by the internal combustion engine (4) and a second oil pump (3) that can be electrically driven. In addition, the cooling oil supply of the starting element is guaranteed by the provision of a low-pressure oil by way of the electrically driven oil pump (3), at least during the starting operation, the stream cooling the starting element (11).

Abstract: The invention relates to a positively engaging shifting element which can be hydraulically or pneumatically actuated, comprising a hydraulically or pneumatically actuatable piston (I) having a piston compartment (2) containing a hydraulic medium or pressure medium, a jaw (3) having a dog-type gearing (4) and a mating jaw (5) with which the dog-type gearing (4) meshes when engaged. The engaging speed of the jaw (3) can be increased by decoupling the jaw (3) from the hydraulic or pneumatic volume flow when the jaws (3) and (5) are in a tooth butt position in relation to each other and by pretensioning the jaw (3) by means of a mechanical device (6) that is actively connected to the piston (I). The gap between the jaws, i.e. the window into which the jaw (3) can be engaged is maintained as narrow as possible in order for a tooth butt position of the jaws (3) and (5) in relation to each other being highly probable when the shift element is applied.

Abstract: The invention relates to a positively engaging shifting element which can be hydraulically or pneumatically actuated, comprising a hydraulically or pneumatically actuatable piston (I) having a piston compartment (2) containing a hydraulic medium or pressure medium, a pressure medium supply (6) for the piston (I), a jaw (3) and a mating jaw (4) with which the jaw (3) meshes when engaged. The engaging speed of the jaw (3) can be increased by decoupling the jaw (3) from the hydraulic or pneumatic volume flow when the jaws (3) and (4) are in a tooth butt position in relation to each other and by pretensioning the jaw (3) by means of a hydraulic or pneumatic pressure reservoir (7) that is actively connected to the piston (I) and that is connected to the pressure medium supply (6). The gap between the jaws, i.e.

Abstract: An actuating apparatus for actuating a shifting mechanism in a transmission to shift a gear wheel on a hollow shaft with an actuator module that is at least partially positioned within the hollow shaft and which comprises an actuator which can be connected with a coupling element of the shift mechanism which radially, inwardly extends into the inner diameter of the hollow shaft. The enclosure of the actuator module has at least an axially extending assembly passageway which guides the coupling element, during axial insertion of the actuator module into the hollow shaft. A method for the assembly and disassembly of an actuator module, with at least one actuator of an actuating apparatus for inside actuation of a shift mechanism on the hollow shaft. The actuator module is axially inserted into the hollow shaft and rotated via an assembly guide.

Abstract: The invention relates to an arrangement for shifting at least one freewheel (1, 2, 3) on an associated shaft of a gear mechanism, comprising at least one shifting device which comprises an actuation device and a non-positive and/or positive shifting device. Said shifting device can be axially displaced by the actuation device that is arranged at least partially in the shaft and the shifting device is arranged coaxially to the shaft. According to the invention, an axial extension can be disposed between the actuation device and the shifting device.

Abstract: An actuating assembly for actuating synchronizing elements of a centrally synchronized dual-clutch transmission having at least a first part-transmission (6) and a second part-transmission (7) such that at least one synchronizing element is associated with each of the first and the second part-transmission (6, 7). A common actuator (1) is provided for actuating at least the synchronizing elements of the two part-transmissions.

Abstract: A power shift parallel shift transmission with parallel torque transmission branches, the input sides of which have an intermediate element which can be connected by an associated power shift element to a common input element, and the output sides of which can be connected by drive output elements with a common output element and can be connected to the appropriate intermediate element by a transmission ratio step that is engaged by an associated clutch. The transmission ratio steps are sequentially distributed in alternation in the order of their transmission ratios across the intermediate elements and in groups of adjacent transmission ratios across the drive output elements. To simply increase the number of gear steps in a space-saving manner, at least one of the drive output elements is in driving connection with the common output element via at least two alternatively shiftable output transmission ratio steps that have different transmission ratios.

Abstract: The invention relates to a dual clutch gear mechanism with a countershaft design for a vehicle with central synchronisation, in which a braking device is provided for slowing down each partial gear mechanism and a band brake (1,2) is provided as a braking device.

Abstract: The invention relates to an arrangement for coupling at least two freewheels (1, 2) independent of an associated shaft of a gear mechanism, comprising at least one shifting device that comprises an actuation device and a shifting device. Said shifting device can be axially displaced with the actuation device that is arranged at least partially in the shaft.