Abstract: A multi-stage transmission (1) comprising a housing (9), a drive shaft (AN), an output shaft (AB), four planetary gear sets (RS1, RS2, RS3, RS4) which each have first, second and third elements, at least eight rotatable shafts (1, 2, 3, 4, 5, 6, 7, 8), six shift elements which comprise three clutches (K1, K2, K3) and three brakes (B1, B2, B3). Selective engagement of the clutches and brakes results in different transmission ratios between the drive shaft (AN) and output shaft (AB) so that up to nine forward gears can be implemented. In the multi-stage transmission, the connections of the individual elements to each other are such that exactly three of the six shift elements transmit torque during each gear step.

Abstract: A multi-stage transmission (1) having a housing (9), a drive shaft (AN), an output shaft (AB), four planetary gear sets (RS1, RS2, RS3, RS4) each having first, second and third elements, at least eight rotatable shafts (1, 2, 3, 4, 5, 6, 7, 8), six shift elements, comprising four clutches (K1, K2, K3) and two brakes (B1, B2, B3). Selective engagement of the clutches and brakes results in different transmission ratios between the drive shaft (AN) and the output shaft (AB) so that up to nine forward gears can be implemented. The multi-stage transmission is delimited by the connections of the individual elements to each other and in that exactly three of the six shift elements are engage for gear step of the transmission.

Abstract: A multi-stage transmission (1) having a housing (9), a drive shaft (AN), an output shaft (AB), four planetary gear sets (RS1, RS2, RS3, RS4) each having first, second and third elements, at least eight rotatable shafts (1, 2, 3, 4, 5, 6, 7, 8) and six shift elements comprising four clutches (K1, K2, K3, K4) and two brakes (B1, B2). Selective engagement of the clutches and brakes results in different transmission ratios between the drive shaft (AN) and the output shaft (AB) so that up to nine forward gears can be implemented. The multi-stage transmission is delimited by the connections of the individual elements to each other and exactly three of the six shift elements are engaged for each of the up to nine forward gears.

Abstract: A multi-stage transmission (1) comprising a housing (9), a drive shaft (AN), an output shaft (AB), four planetary gear sets (RS1, RS2, RS3, RS4) which each have first, second and third elements, at least eight rotatable shafts (1, 2, 3, 4, 5, 6, 7, 8), six shift elements which comprise three clutches (K1, K2, K3) and three brakes (B1, B2, B3). Selective engagement of the clutches and brakes results in different transmission ratios between the drive shaft (AN) and output shaft (AB) so that up to nine forward gears can be implemented. In the multi-stage transmission, the connections of the individual elements to each other are such that exactly three of the six shift elements transmit torque during each gear step.

Abstract: A multi-stage transmission (1) having a housing (9), a drive shaft (AN), an output shaft (AB), four planetary gear sets (RS1, RS2, RS3, RS4) each having first, second and third elements, at least eight rotatable shafts (1, 2, 3, 4, 5, 6, 7, 8), six shift elements, comprising four clutches (K1, K2, K3) and two brakes (B1, B2, B3). Selective engagement of the clutches and brakes results in different transmission ratios between the drive shaft (AN) and the output shaft (AB) so that up to nine forward gears can be implemented. The multi-stage transmission is delimited by the connections of the individual elements to each other and in that exactly three of the six shift elements are engage for gear step of the transmission.

Abstract: A multi-stage transmission (1) having a housing (9), a drive shaft (AN), an output shaft (AB), four planetary gear sets (RS1, RS2, RS3, RS4) each having first, second and third elements, at least eight rotatable shafts (1, 2, 3, 4, 5, 6, 7, 8) and six shift elements comprising four clutches (K1, K2, K3, K4) and two brakes (B1, B2). Selective engagement of the clutches and brakes results in different transmission ratios between the drive shaft (AN) and the output shaft (AB) so that up to nine forward gears can be implemented. The multi-stage transmission is delimited by the connections of the individual elements to each other and exactly three of the six shift elements are engaged for each of the up to nine forward gears.

Abstract: A transmission having gearsets (P1-P4), shafts (1-8) and shifting elements (03, 04, 05, 48, 67, 78). Shaft (1) couples an input and carrier of gearset (P1), shaft (2) couples the output and carriers of gearsets (P3, P4), shaft (3) couples the ring gear of gearset (P2) and the sun gear of gearset (P1), shaft (4) couples the ring gear of gearset (P3) and the sun gear of gearset (P4), shaft (5) couples the ring gear of gearset (P4), shaft (6) couples the sun gear of gearset (P2) and the ring gear of gearset (P1), shaft (7) is connected to the sun gear of gearset (P3), and shaft (8) is connected to the carrier of gearset (P2). Shafts (3, 4 and 5) can each engage housing (G) by way of respective brakes (03, 04, 05), clutches (48; 67; 78) can couple, respectively, shafts (4, 8; 6, 7; 7, 8).

Abstract: Multi-stage transmission having six or seven forward gears and three reverse gears comprises three planetary gear sets (P1, P2, P3), six rotatable shafts (1, 2, 3, 4, 5, 6), as well as six shifting elements (03, 04, 13, 14, 15, 35, 36, 46), whereby the shaft (1) is permanently connected to input element (An) and to the sun gear of the second planetary gear set (P2), the shaft (2) is permanently connected to the output element (Ab) and the ring gear of the third planetary gear set (P3), the shaft (3) is permanently connected to the ring gear of the second planetary gear set (P2), the shaft (4) is permanently connected to the web of the third planetary gear set (P3), the shaft (5) is permanently connected to the ring gear of the first planetary gear set (P1), to the web of the second planetary gear set (P2), and to the sun gear of the third planetary gear set (P3), the shaft (6) is permanently connected to the web of the first planetary gear set (P1), whereby the sun gear of the first planetary gear set (P1) is

Abstract: A drive system for individually driving two driven wheels of a vehicle. The system includes two continuously variable drive motors which are drivingly connected, via a transmission arrangement, with respective driven wheels. Each transmission arrangement includes a shift transmission and a bevel gear transmission, which has a fixed transmission ratio and includes a spur gearset and a bevel gearset. Shift transmissions vary the transmission ratio and the bevel gear transmission enables arranging drive shafts of the drive motors transversely to the rotational axis of the driven wheels. The spur gearsets enable vertical repositioning of the transmissions drive output shafts. Furthermore, with different arrangements of the bevel gears, inclination of respective drive motors and shift transmissions relative to the vehicles longitudinal axis and the angle of the output shafts can be adjusted, such that the drive system can be installed in different vehicle types using largely identical components.

Abstract: A transmission having gearsets (P1-P4), shafts (1-8) and shifting elements (03, 04, 05, 48, 67, 78). Shaft (1) couples an input and carrier of gearset (P1), shaft (2) couples the output and carriers of gearsets (P3, P4), shaft (3) couples the ring gear of gearset (P2) and the sun gear of gearset (P1), shaft (4) couples the ring gear of gearset (P3) and the sun gear of gearset (P4), shaft (5) couples the ring gear of gearset (P4), shaft (6) couples the sun gear of gearset (P2) and the ring gear of gearset (P1), shaft (7) is connected to the sun gear of gearset (P3), and shaft (8) is connected to the carrier of gearset (P2). Shafts (3, 4 and 5) can each engage housing (G) by way of respective brakes (03, 04, 05), clutches (48; 67; 78) can couple, respectively, shafts (4, 8; 6, 7; 7, 8).

Abstract: A transmission having forward and reverse gears includes gearsets (P1, P2, P3), shafts (1-6), and six shifting elements (03, 04, 13, 14, 15, 35, 36, 46). Shaft (1) forms the input and sun gear of gearset (P2). Shaft (2) forms the output and ring gear of gearset (P3). Shaft (3) forms the ring gear of gearset (P2), and shaft (4) forms the carrier of gearset (P3). Shaft (5) forms the ring gear of gearset (P1), carrier of gearset (P2), and sun gear of gearset (P3). Shaft (6) forms the carrier of gear set (P1). The sun gear of gearset (P1) is fixed to a housing. Shafts (3, 4) are connected by brakes (03, 04) to the housing. Clutches (14, 36, 46) respectively couple shafts (1, 4), shafts (3, 6), and shafts (4, 6), and clutch (35, 13, 15) couples shafts (3, 5), shafts (1, 3), or shafts (1, 5).

Abstract: An electric drive system for a vehicle features two similar drive units, an electric energy source, an electronic control unit and a left and a right summation gear, which are configured as planetary gears. A drive unit drives the ring gear of the left summation gear, while the other drive unit drives the ring gear of the right summation gear. The ring gear of the left summation gear has a direct drive connection with the sun gear of the right summation gear, while the ring gear of the right summation gear has a direct drive connection with the sun gear of the left summation gear by way of a second mechanical gearset. A left sun gear shaft is proposed running through a left hollow shaft toward the center of the vehicle and a right sun gear shaft running through a right hollow shaft toward the center of the vehicle.

Abstract: The present invention concerns a drive system for the individual driving of the two driven wheels of a driven wheel pair or suchlike for a vehicle, which comprises two continuously variable drive motors (2, 6) each of which are in driving connection via a transmission arrangement with an associated driven wheel (4, 8) or suchlike. The transmission arrangement comprises in each case two transmission units, one of the two transmission units being a shift transmission (10, 40) while the other transmission unit is a bevel gear transmission (54, 64; 70, 72) with a fixed transmission ratio, the bevel gear transmission (54, 64; 70, 72) comprising a spur gearset and a bevel gearset. By virtue of the shift transmission (10, 40) the drive transmission ratio can be varied, whereas the bevel gear transmission (54, 64; 70, 72) enables the drive shafts (14) of the drive motors (2, 6) to be arranged transversely to the rotation axis of the driven wheels (4, 8).