Clutch, Input: Operation: Operation

WARNING: This page is about a different car, the 2016 Jeep Wrangler and 2015 Jeep Wrangler. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Identifying Input Clutches

Courtesy of CHRYSLER GROUP, LLC

1 - K1 CLUTCH

2 - K2 CLUTCH

3 - EXTERNALLY TOOTHED DISC

4 - INTERNALLY TOOTHED DISC

5 - K3 CLUTCH

6 - K3 CLUTCH EXTERNALLY TOOTHED DISC CARRIER

7 - K3 CLUTCH PISTON

8 - K3 CLUTCH INTERNALLY TOOTHED DISC CARRIER

9 - REAR PLANETARY GEARSET SUN GEAR

10 - CENTER PLANETARY GEARSET PLANETARY CARRIER

11 - CENTER PLANETARY GEARSET ANNULUS GEAR

12 - CENTER PLANETARY GEARSET SUN GEAR

13 - K2 CLUTCH EXTERNALLY TOOTHED DISC CARRIER

14 - K2 CLUTCH PISTON

15 - FRONT PLANETARY GEARSET PLANETARY CARRIER

16 - FRONT PLANETARY GEARSET ANNULUS GEAR

17 - FRONT PLANETARY GEARSET SUN GEAR

18 - K1 CLUTCH INTERNALLY TOOTHED DISC CARRIER

19 - K1 CLUTCH EXTERNALLY TOOTHED DISC CARRIER

20 - K1 CLUTCH PISTON

21 - INPUT SHAFT

The input clutches (Fig 1) 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.

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.