Input Clutches
| 1 - K1 CLUTCH | 12 - CENTER PLANETARY GEAR SET SUN GEAR |
| 2 - K2 CLUTCH | 13 - K2 CLUTCH EXTERNALLY TOOTHED DISC CARRIER |
| 3 - EXTERNALLY TOOTHED DISC | 14 - K2 CLUTCH PISTON |
| 4 - INTERNALLY TOOTHED DISC | 15 - FRONT PLANETARY GEAR SET PLANETARY CARRIER |
| 5 - K3 CLUTCH | 16 - FRONT PLANETARY GEAR SET ANNULUS GEAR |
| 6 - K3 CLUTCH EXTERNALLY TOOTHED DISC CARRIER | 17 - FRONT PLANETARY GEAR SET SUN GEAR |
| 7 - K3 CLUTCH PISTON | 18 - K1 CLUTCH INTERNALLY TOOTHED DISC CARRIER |
| 8 - K3 CLUTCH INTERNALLY TOOTHED DISC CARRIER | 19 - K1 CLUTCH EXTERNALLY TOOTHED DISC CARRIER |
| 9 - REAR PLANETARY GEAR SET SUN GEAR | 20 - K1 CLUTCH PISTON |
| 10 - CENTER PLANETARY GEAR SET PLANETARY CARRIER | 21 - INPUT SHAFT |
| 11 - CENTER PLANETARY GEAR SET ANNULUS GEAR |
The input clutches produce a non-positive locking connection between two elements of a planetary gear set or between one element from each of two planetary gear sets in order to transmit the drive torque. See Fig 1.
If the piston (20) on multi-plate clutch K1 (1) is subjected to oil pressure, it presses the internal and external discs of the disc set together. The sun gear (17) is locked with the planetary carrier (15) via the externally toothed disc carrier (19) and the internally toothed disc carrier (18). The front planetary gear set is thus locked and turns as a closed unit.
If the multi-plate clutch K2 (2) is actuated via the piston (14), the piston compresses the disc set. The annulus gear (16) of the front planetary gear set is locked with the annulus gear (11) of the center planetary gear set via the externally toothed disc carrier (13) and the center planetary carrier (10) on which the internally toothed discs are seated. Annulus gear (16) and annulus gear (11) turn at the same speed as the input shaft (21)
If the multi-plate clutch K3 (5) is actuated via the piston (7), the piston compresses the disc set. The sun gear (12) of the center planetary gear set is locked with the sun gear (9) of the rear planetary gear set via the externally toothed disc carrier (6) and the internally toothed disc carrier (8). Sun gear (12) and sun gear (9) turn at the same speed.