Planetary gear type multi-stage transmission

A multi-stage transmission of a planetary design for a motor vehicle, the transmission comprising:

• a housing (1) accommodating first, second, third and fourth planetary gear sets (P1, P2, P3, P4) and a plurality of shafts (2 to 9),
• first, second and third clutches (K1, K2, K3) and first, second and third brakes (B1, B2, B3) whose selective actuation implements various transmission ratios between a drive shaft (2) and an output shaft (3), extending coaxially with the drive shaft (2),
• a carrier of the first planetary gear set (P1) being connected, via a third shaft (4), to a carrier of the second planetary gear set (P2),
• a ring gear of the second planetary gear set (P2) being connected to a fourth shaft (5) and being connectable to the housing (1) via actuation of the first brake (B1),
• a fifth shaft (6) coupling a ring gear of the first planetary gear set (P1) with a sun gear of the second planetary gear set (P2), and the fifth shaft (6) being connectable, via the first clutch (K1), to the drive shaft (2),
• a sun gear of the first planetary gear set (P1) being fixable, via a sixth shaft (7) and the second brake (B2), to the housing (1) and being connectable, via the second clutch (K2), to the drive shaft (2), and
• the first clutch (K1) and the second clutch (K2) being force-locking startup elements which implement a startup procedure of the transmission, and the first clutch (K1) and the second clutch (K2) are disposed within the housing (1) and located directly adjacent one another.

A multi-stage transmission of a planetary design for a motor vehicle, the transmission comprising:

• a housing (1) accommodating first, second, third and fourth planetary gear sets (P1, P2, P3, P4) and a plurality of shafts (2 to 9),
• first, second and third clutches (K1, K2, K3) and first, second and third brakes (B1, B2, B3) whose selective actuation implements various transmission ratios between a drive shaft (2) and an output shaft (3), extending coaxially with the drive shaft (2),
• a carrier of the first planetary gear set (P1) being connected, via a third shaft (4), to a carrier of the second planetary gear set (P2),
• a ring gear of the second planetary gear set (P2) being connected to a fourth shaft (5) and being connectable to the housing (1) via actuation of the first brake (B1),
• a fifth shaft (6) coupling a ring gear of the first planetary gear set (P1) with a sun gear of the second planetary gear set (P2), and the fifth shaft (6) being connectable, via the first clutch (K1), to the drive shaft (2),
• a sun gear of the first planetary gear set (P1) being fixable, via a sixth shaft (7) and the second brake (B2), to the housing (1) and being connectable, via the second clutch (K2), to the drive shaft (2), and
• the first clutch (K1) and the second clutch (K2) being force-locking startup elements which implement a startup procedure of the transmission, and
• a plurality of axial supply channels (11 to 14) start from a drive-side end region and extend inside and along the drive shaft (2) to an end region located opposite of the drive-side end region.