Abstract: A claw shifting element for a motor vehicle transmission includes a sliding sleeve that is axially fixed in its two end positions by frictional locking.

Abstract: A coupling device (K) has a first positive-locking clutch (K0), a second positive-locking clutch (K1), an axially fixed first shaft (W1), an axially fixed second shaft (W2), a connecting shaft (WV) and an actuator (AK). The first shaft (W1), the second shaft (W2) and the connecting shaft (WV) are arranged coaxially to each other. By closing the first clutch (K0), a torque-proof connection between the first shaft (W1) and the connecting shaft (WV) is established, and by closing the second clutch (K1), a torque-proof connection between the connecting shaft (WV) and the second shaft (W2) is established. The actuator through axial displacement of the connecting shaft (WV), shifts both the first clutch (K0) and the second clutch (K1) between an engaged state and a disengaged state, such that the connecting shaft (WV) is movable to a multitude of axial positions to achieve different engaged states of the clutches.

Abstract: A hydraulic control device (101) for controlling multiple torque-transferring shift elements (K_A, K_B, K_C) of an automatic transmission, whereas each of the shift elements features at least one hydraulic actuator (4A, 4B, 4C), which includes one actuating pressure chamber (7A, 7B, 7C), features at least one stop valve (110) and at least one hydraulic shift device (8) with multiple pressure adjusting devices (23A, 23B, 23C) allocated to the different shift elements. Thereby, the stop valve is formed and arranged in such a manner that the actuators of at least two shift elements are hydraulically connectable to the pressure adjusting devices through a common stop valve, whereas, in a first shifting position of the stop valve, all actuating pressure chambers of the at least two shift elements are tightly sealed by the stop valve.

Abstract: A transmission device has at least one electro-hydraulic transmission control unit and a method of operating the transmission device having a plurality of gear wheel that can be engaged and disengaged from a force flow by fluidically actuated shifting elements. A piston space of a first shifting element, delimited by a second functional surface of the actuating piston of the first shifting element, is made separate from a piston space of a second shifting element, delimited by the first functional surface of the actuating piston, and an area of the second shifting element, that carries an actuating pressure, or an area of the first shifting element, that carries an actuating pressure, is, or can be, connected to the piston space delimited by the second functional surface of the actuating piston of the first shifting element.

Abstract: A vehicle transmission with a drive shaft (AW), two transmission input shafts (GE1, GE2), at least one decoupling element (K2, X1), which is assigned to the second transmission input shaft (GE2), a main shaft (HW), an output shaft (AV) and at least three planetary gear sets (PG1, PG2, PG3). A respective subtransmission (TG1, TG2) is assigned to each of the transmission input shafts (GE1, GE2). One of the two subtransmissions (TG1, TG2) includes at least the first planetary gear set (PG1) while the other of the two subtransmissions (TG1, TG2) includes at least the second planetary gear set (PG2). The shafts (AB, AW, GE1, GE2, HW) are or can be operatively connected to the three planetary gear sets such that at least seven forward gears can be shifted to by the two subtransmissions (TG1, TG2). One of these gears can be shifted as a direct gear or another as an overdrive gear.

Abstract: A vehicle transmission having first and second transmission input shafts (GE1, GE2) and having at least three planetary gear sets (PG1, PG2, PG3). A sub-transmission (TG1, TG2) is allocated to each of first and second transmission input shafts (GE1, GE2) and one of first and second sub-transmissions (TG1, TG2) comprises at least the first planetary gear set (PG1), and the other of first and second sub-transmissions (TG1, TG2) comprises at least the second planetary gear set (PG2). To ensure that the vehicle transmission is economically manufactured and useful for both conventional and hybrid drive trains, a provision is that the transmission input shafts (GE1, GE2) be effectively connected or effectively connectable with the planetary gear sets (PG1, PG2, PG3), that it be possible to variably activate first and second sub-transmissions (TG1, TG2) for implementing multiple gears, and that one of the gears be shiftable as a direct-drive gear.

Abstract: A planetary gear set has a sun gear, multiple planetary gears mounted on a planetary carrier, and a ring gear enclosing the planetary gears, which is designed in split form perpendicular to its axis of rotation and is formed from two ring gear parts arranged coaxially to each other. An adapter component that, for the purpose of a torque-transferring or torque-supporting operative connection of the planetary carrier, is connected in a torque-proof manner to an additional component in a mounted state with the planetary carrier, and is guided, viewed radially, outward by the ring gear parts.

Abstract: Method for operating a transmission (G, G2) with a transmission input shaft (GW1), a transmission output shaft (GW2), a gear set (RS, RS2) with at least two planetary gear sets (P1, P2; P21, P22, P23, P25), and an electric motor (EM) with a rotor (R) and a stator (S), whereas, by means of shift elements (A-F, A2-F2), a plural number of gears is shiftable between the transmission input shaft (GW1) and the transmission output shaft (GW2) under load, whereas, in one engaged gear, at least two of the shift elements (A-F, A2-F2) are locked, whereas, upon a shifting process of the transmission (G, G2) from one original gear to a target gear, in a first step (S1), one of the shift elements (A-F, A2-F2) located in the power flow of the transmission (G, G2) at this point in time is essentially set load-free by means of an electric motor (EM), in a second step (S2), the shift element essentially set load-free in the first step (S1) is opened, in a third step (S3), a rotational speed synchronization between two shaft

Abstract: A power-shiftable transmission, in particular an automatic transmission for a vehicle, which comprises a plurality of frictional shifting elements and at least one interlocking shifting element (A, B, C, D, E) and a plurality of gearwheels which can be engaged in a power flow by the shifting elements (A, B, C, D, E). In order to engage a gear step, at least two associated shifting elements (A, B, C, D, E) are engaged and at least one interlocking shifting element (B), as a shifting element (B) to be engaged, is associated with a gear step to be engaged with a supporting gear.

Abstract: A two-step multi-step transmission in which a first planetary gear set (1) has two radially nested transmission sub-assemblies. The first planetary gearset has an inner sun gear (11), inner planetary gears (12), an outer sun gear (14) which is rotationally fixed to the inner ring gear (13), outer planetary gears (15), an outer ring gear (16), and a carrier (17) on which the inner planetary gears (12) and the outer planetary gears (15) are mounted. The inner ring gear (13) and the outer sun gear (14), respectively, are rotationally fixed to a second, traditionally designed planetary gear set (2) and can be locked via a brake (42).

Abstract: A transmission comprises a transmission input shaft, a transmission output shaft, and three power paths situated between the transmission input shaft and a main gear set. The main gear set comprises two single planetary gear sets a first, a second, a third and a fourth shafts. An electric motor is connected with at least one of the four shafts. The first shaft can be connected with the first power path via a first switching element and with the third power path via a second switching element. The second shaft can be connected with the first power path via a third switching element and with the third power path via a fourth switching element. The third shaft is constantly connected with the transmission output shaft. The fourth shaft can be connected with the second power path via a fifth switching element and can be fixed by a sixth switching element.

Abstract: A hybrid drive train for a motor vehicle, comprising at least one internal combustion engine and at least one electric motor, which is functionally connected to the internal combustion engine, or can be functionally connected to said internal combustion engine, wherein a multi-speed transmission having two planetary gear sets, with at least one transmission input shaft and at least one transmission output shaft is provided, wherein the multi-speed transmission exhibits at least four shift elements, the selective actuation of which results in different transmission ratios between the at least one transmission input shaft and the transmission output shaft, such that at least three forward gears are realized.

Abstract: A transmission comprises an input shaft, an output shaft and at least two power paths between the input shaft and a driving gear set with a first, second, third and fourth shafts, wherein a first power paths has a first fixed gear ratio and a second of the power paths has a second fixed gear ratio smaller than the first fixed gear ratio. The first shaft can be fixed by a first gear-shifting element, and can be connected by a second-gear shifting element to the first power path. The second shaft can be connected by a third gear-shifting element to the first power path and by a fourth gear-shifting element to the second power path. The third shaft is permanently connected to the output shaft. The fourth shaft can be connected by a fifth gear-shifting element to the second power path and can be fixed by a sixth gear-shifting element.

Abstract: A claw shifting element (1) comprising a sliding sleeve (3), with which the sliding sleeve (3) is axially fixed in its two end positions by frictional locking, is proposed.

Abstract: A two-step multi-step transmission in which a first planetary gear set (1) has two radially nested transmission sub-assemblies. The first planetary gearset has an inner sun gear (11), inner planetary gears (12), an outer sun gear (14) which is rotationally fixed to the inner ring gear (13), outer planetary gears (15), an outer ring gear (16), and a carrier (17) on which the inner planetary gears (12) and the outer planetary gears (15) are mounted. The inner ring gear (13) and the outer sun gear (14), respectively, are rotationally fixed to a second, traditionally designed planetary gear set (2) and can be locked via a brake (42).

Abstract: An arrangement comprising at least one dog clutch which is shiftable for coupling and decoupling a shaft and a component at a transmission. An actuating piston (5) is disposed axially movable, at least to some extent, within the shaft for moving a shifting claw (9) of the dog clutch into a disengaged state and an engaged state. The actuating piston (5) can be pressurized, on both sides, with a pressurizing medium so that the actuating piston (5) can be hydraulically actuated in both directions of movement.

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 arrangement which comprises at least one claw clutch that can be connected to at least one component of a transmission, such that the claw clutch is arranged substantially within a bearing support (1) of the transmission.

Abstract: A motor vehicle multi-stage planetary transmission which has a housing that accommodates four planetary gear sets (P1, P2, P3, P4), shafts (2-9), three clutches (K1, K2, K3) and three brakes (B1, B2, B3) whose selective actuation implements various transmission ratios between drive and output shafts. The carriers of gear sets (P1, P2) are connected by shaft (4), the ring gear of gear set (P2) can be fixed to the housing, via shaft (5), by actuating brake (B1). A ring gear of gear set (P1) and a sun gear of gear set (P2) are coupled by shaft (6) which can be connected, via clutch (K1), to the drive shaft. A sun gear of gear set (P1) can be fixed, via brake (B2), to the housing and can be coupled, by clutch (K2), to drive shaft. The first and second clutches (K1, K2) are startup elements which initiate startup procedures.

Abstract: The multi-ratio transmission with forward and reverse gears, gearsets (P1, P2, P3, P4), shafts and shifting elements. A sun gear of the gearset (P1) directly couples an input shaft, which couples, via clutch (14), shaft (4) and, via clutch (17), shaft (7). Shaft (4) couples the carrier of gearset (P2) and the ring gear of gearset (P3) and couples, via brake (04), a housing. Shaft (7) couples the sun gear of gearset (P4) and, via clutch (78), shaft (8), which couples the sun gears of gearsets (P3, P2). Shaft (3) couples the carrier of gearset (P1) and the ring gear of gearset (P2) and, via brake (03), the housing. Shaft (5) couples the ring gear of gearset (P1) and, via brake (05), the housing. Shaft (6) couples the carrier of gearset (P3) and the ring gear of gearset (P4). The output shaft couples the carrier of gearset (P4).