Abstract: A frictional shift element for a motor vehicle transmission includes a first frictional element allocated to a first carrier; and a second frictional element allocated to a second carrier. One of the first frictional element or the second frictional element has an annular frictional surface, and the other of the first frictional element or the second frictional element has a corresponding frictional surface with at least one frictional surface that protrudes along a radial direction in an overlapping area.

Abstract: A multi-speed planetary transmission includes a housing, a drive shaft connectable to a drive train for transferring a drive torque from the drive train to the multi-speed planetary transmission, and four single planetary transmissions arranged along a housing longitudinal axis. The planetary gears feature a sun gear, ring gear, and planetary carrier. Six shift elements are arranged within the housing and are designed as four clutch elements and two brakes. Connecting shafts form connections between the single planetary transmissions, the drive shaft, the output shaft, the clutch elements and/or the brakes. The single planetary transmissions are shiftable such that nine forward gears and one reverse gear are provided, and the shift elements are arranged in a manner easily accessible from outside the housing.

Abstract: A multi-speed transmission for a motor vehicle includes a housing, a drive shaft, an output shaft, and at least four planetary gear sets, whereas each of the planetary gear sets comprises one sun gear, at least one planet, one planetary carrier and one ring gear. Several shift elements are provided in the form of at least four clutches and at least two brakes. The drive shaft is connectable through the third clutch to the first brake and to the sun gear of the first planetary gear set and to the sun gear of the second planetary gear set. The ring gear of the first planetary gear set is connected to the planetary carrier of the fourth planetary gear set. The planetary carrier of the fourth planetary gear set is connectable through the fourth clutch to the drive shaft. The sun gear of the fourth planetary gear set is connected to the housing. The second brake is connected to the planetary carrier of the first planetary gear set.

Abstract: A multi-speed transmission in planetary design for a vehicle includes a housing, a first shaft (1) as a drive (An), and a second shaft (2) provided as an output (Ab) that is arranged in a manner axially parallel to the drive. Three planetary gear sets, additional shafts, along with six shifting elements are also provided, through which the actuation of several gears are realized. Machine elements are provided for the transfer of torque between the drive and the output. The first shaft is connectable to the planetary gear carrier of the second planetary gear set, to the sun gear of the first planetary gear set, to the ring gear of the second planetary gear set, to the planetary gear carrier of the first planetary gear set, and to the first spur gear stage. The second shaft is connected or connectable to the first machine element and to the second machine element.

Abstract: A multi-speed transmission in planetary design for a vehicle includes a housing, a first shaft is provided as a drive (An), and a second shaft provided as an output arranged axially parallel to the drive. Three planetary gear sets and additional shafts along with six shifting elements are provided. Machine elements (ST1, ST2) are provided for transfer of torque between the drive (An) and the output (Ab). The first shaft (1) is connectable to the ring gear of the third planetary gear set, to the sun gear of the first planetary gear set, to the sun gear of the third planetary gear set, to the planetary gear carrier of the first planetary gear set and to the first machine element. The second shaft is connected or connectable to the first machine element and to the second machine element.

Abstract: A transmission (G) is provided with four planetary gear sets (P1, P2, P3, P4), several shafts (W1-W8) and a first, second, third, fourth and fifth shift element (B1, B2, K1, K2, K3), the selective meshing of which brings about different transmission ratio relationships between a transmission input shaft (GW1) and a transmission output shaft (GW2). The second shift element (B2) and/or the fifth shift element (K3) is arranged, in a series at a sixth shift element (K4), in the power flow between the fifth shaft (W5) and a sun gear (So-P4) of the fourth planetary gear set (P4).

Abstract: An automatic transmission has eight rotatable shafts, four planetary gear sets and seven shift elements for shifting several forward gears and one reverse gear. A first element of the second planetary gear set forms the first shaft designed as the drive shaft of the transmission. A second element of the third planetary gear set forms the second shaft designed as the output shaft of the transmission. A second element of the first planetary gear set forms the third shaft. A first element of the first planetary gear set forms the fourth shaft. A third element of third planetary gear set forms the fifth shaft. As the sixth shaft, a third element of the first planetary gear set, a second element of the second planetary gear set and a first element of the third planetary gear set are constantly connected. A third element of the second planetary gear set forms the seventh shaft. A first brake is arranged in the power flow between the third shaft and the housing.

Abstract: An automatic transmission has a first clutch shaft that constantly connects first and fourth planetary gear sets, a second clutch shaft that constantly connects second and third planetary gear sets, and a third clutch shaft that constantly connects the third and first planetary gear sets. A drive shaft is constantly connected to the fourth planetary gear set; an output shaft is constantly connected to the third planetary gear set. The first planetary gear set is directly connected to two shift elements, the second planetary gear set is directly connected to four shift elements, the third planetary gear set is directly connected to two shift elements, the fourth planetary gear set is directly connected to four shift elements. The drive shaft is directly connected to only one shift element. The output shaft is directly connected to only one shift element.

Abstract: A transmission includes a main gear set, an auxiliary gear set and an electric motor with a rotor and a stator. A third shaft of the main gear set is connected to a transmission output shaft. A first shaft of the auxiliary gear set is constantly connected to the rotor. A second shaft of the auxiliary gear set is connectable through a first auxiliary shift element to a first shaft of the main gear set or a second shaft of the main gear set and through a second auxiliary shift element to a fourth shaft of the main gear set. A third shaft of the auxiliary gear set is constantly connected to the third shaft of the main gear set.

Abstract: A system for locking and releasing a shifting position of a shifting element that is hydraulically actuatable by an actuating pressure is provided. The shifting element is arranged coaxially with a transmission shaft. The system includes a stop valve. The stop valve is subjectable to a control pressure that is separate from the actuating pressure of the shifting element. The stop valve is arranged radially inside the shifting element in the transmission housing.

Abstract: An automatic transmission for a motor vehicle includes eight rotatable shafts, including a drive shaft and an output shaft. Four planetary gear sets are included, with each planetary gear set further including a first element, a second element, and a third element. Seven shift elements are included, wherein selective engagement of the seven shift elements leads to different transmission ratio relationships between the drive shaft and output shaft for shifting of several forward gears and one reverse gear. Three of the shift elements are designed as brakes, and four of the shift elements are designed as clutches.

Abstract: A transmission (G) is provided having four planetary gear sets (P1, P2, P3, P4), several shafts (W1-W8) and a first, second, third, fourth and fifth shift element (B1, B2, K1, K2, K3), the selective meshing of which brings about different transmission ratio relationships between a transmission input shaft (GW1) and a transmission output shaft (GW2). The transmission (G) includes a sixth shift element (K4), through which the fifth shaft (W5) is connectable to the sun gear (So-P4) of the fourth planetary gear set (P4).

Abstract: A vehicle transmission having a housing and a main transmission which includes input and output shafts and four planetary gearsets. Each of the gearsets has sun and ring gears, a carrier which supports a planetary gearwheel. The sun gear and the carrier of the second gearset are coupled permanently to the input and output shafts, respectively. The carrier of the second gearset is permanently coupled to the carrier of the fourth gearset. The ring gear of the second gearset is permanently coupled to the ring gear of the third gearset. The carrier of the fourth gearset can be coupled, via a first shifting element, to the sun gear of the second gearset. The carrier of the third gearset can be coupled, via a second shifting element, to the housing. The sun gear of the third gearset can be coupled, via third and fourth shifting elements, to the input shaft.

Abstract: A multi-speed transmission in planetary design is proposed for a vehicle. A first shaft is provided as a drive (An) and a second shaft is provided as an output (Ab) arranged axially parallel to the drive. Three planetary gear sets (RS1, RS2, RS3) and additional shafts along with six shifting elements (K1, K2, K3, K4, B1, B2) are provided, through which actuation of several gears is realized. Machine elements (ST1, ST2) are provided for transfer of torque between the drive (An) and the output (Ab). The first shaft is connected or connectable, as a drive, the ring gear (HR3) of the third planetary gear set (RS3) and to the planetary gear carrier (PT2) of the second planetary gear set (RS2). The second shaft (2), as an output shaft (Ab), is connectable or connected to the first machine element (ST1) and to the second machine element (ST2).

Abstract: A multi-speed transmission for a motor vehicle includes a housing, a drive shaft, an output shaft, at least four planetary gear sets, whereas each of the planetary gear sets comprises one sun gear, at least one planet, one planetary carrier and one ring gear, along with several shift elements in the form of at least four clutches and at least two brakes. The sun gear of the fourth planetary gear set is connected to the housing. The planetary carrier of the fourth planetary gear set is connectable through the fourth clutch to the drive shaft. The second brake is connected to the sun gear of the second planetary gear set. The first brake is connected to the ring gear of the second planetary gear set. The ring gear of the fourth planetary gear set is connected to the planetary carrier of the second planetary gear set.

Abstract: A transmission (G) is provided with four planetary gear sets (P1, P2, P3, P4), several shafts (W1-W7) and a first, second, third, fourth and fifth shift element (B1, B2, K1, K2, K3), the selective meshing of which brings about different transmission ratio relationships between a transmission input shaft (GW1) and a transmission output shaft (GW2). The transmission (G) includes a sixth shift element (K4), through which the fifth shaft (W5) is connectable to the sun gear (So-P4) of the fourth planetary gear set (P4), either directly or through the second shift element (B2), and whereas the fourth shaft (W4) is connectable through the fourth shift element (K2) with the sun gear (So-P4) of the fourth planetary gear set (P4), either directly or through the second shift element (B2).

Abstract: A multi-speed transmission in planetary design with a housing is proposed. A first shaft (1) is provided as a drive (AN) and a second shaft (2) is provided as an output (Ab) arranged axially parallel to the drive. Three planetary gear sets (RS1, RS2, RS3) and additional shafts (3-9) along with six shifting elements (K1, K2, K3, K4, B1, B2) are provided for the actuation of several gears. Machine elements (ST1, ST2) are provided for the transfer of torque between the drive (AN) and the output (Ab). The first shaft (1) is connectable or connected, as a drive, to a sun gear (SR1) of the first planetary gear set (RS1), to the sun gear (SR3) of the third planetary gear set (RS3), and to the planetary gear carrier (PT2) of the second planetary gear set (RS2). The second shaft (2), as an output shaft (Ab), is connectable or connected to the first machine element (ST1) and to the second machine element (ST2).

Abstract: A multi-speed transmission has four planetary gear sets, eight rotatable shafts and six shifting elements. The sun gear of the first planetary gear set is connected to the third shaft. The input shaft is detachably connectable to the fourth shaft. The input shaft is connected to the sun gear of the fourth planetary gear set. The eighth shaft is connected to the ring gear of the first planetary gear set, the sun gear of the second planetary gear set, and the sun gear of the third planetary gear set. The fifth shaft is connected to the bar of the second planetary gear set and the ring gear of the third planetary gear set and is detachably connectable to the seventh shaft. The sixth shaft is connected to the ring gear of the second planetary gear set and is detachably connectable to the output shaft of the transmission.

Abstract: A multi-speed transmission in planetary design for a vehicle with a housing includes a first shaft provided as a drive and a second shaft provided as an output that is arranged axially parallel to the drive. Three planetary gear sets and additional shafts along with six shifting elements are provided, through which the actuation of several gears are realized. Machine elements are provided for the transfer of torque between the drive and the output. The first shaft is connectable, as a drive, to the sun gear of the third planetary gear set, to the planetary gear carrier of the second planetary gear set, to the planetary gear carrier of the third planetary gear set, and is connectable or connected to the sun gear of the first planetary gear set. The second shaft is connected or connectable, as a drive, to the first machine element and to the second machine element.

Abstract: An automatic transmission includes nine rotatable shafts and four planetary gear sets, each with a first, second and third element. For the shifting of multiple forward gears and one reverse gear, seven shift elements are provided. The second element of the fourth planetary gear set forms the first shaft designed as a drive shaft, the second element of the third planetary gear set forms the second shaft designed as an output shaft, the first element of the fourth planetary gear set forms the third shaft, one element of the planetary gear set forms the fourth shaft, the third element of the third planetary gear set forms the sixth shaft, the second element of the second planetary gear set forms the eighth shaft. The third element of the second planetary gear set and the first element of the third planetary gear set are connected to each other as the fifth shaft.