GF27.10-P-3011SXA Power Flow In 1st Gear, Function

GF27.10-P-3011SXA Power flow in 1st gear, function
- Transmission 722.6









Principle of power transmission in 1st gear:
Via the drive shaft (1) and involving all 3 planetary gear sets the torque coming from the torque converter is increased and transmitted to the output shaft (5). The following are not engaged:
^ Multi-disk clutch K1 (24)
^ Multi-disk clutch K2 (25)
^ Multi-disk brake B3 (23)

Front planetary gear set
The input shaft (1) drives the internal gear (29/4). In drive mode the sun gear (29/1) is supported via the locked freewheel F1 (27) and in overrun mode via the engaged multi-disk brake B1 (21) on the housing. The planetary gears (29/2) revolve around the stationary sun gear (29/1) and ensure that torque is increased when power is transmitted from the ring gear (29/4) to the planet carrier (29/3). The planet carrier (29/3) moves at reduced speed in the direction of rotation of the engine.

Rear planetary gear set
The ring gear (31/4) rotates at reduced speed due to the mechanical connection to the planet carrier (29/3). 31/1 The sun gear is supported by the engaged multi-disk brake B2 (22) and in drive mode via the locked freewheel F2 (28), in overrun mode via the engaged multi-disk clutch K3 (26) on the housing. The planetary gears (31/2) revolve around the stationary sun gear (31/1) and ensure that torque is increased when power is transmitted from the ring gear (31/4) to the planet carrier (31/3). The planet carrier (31/3) moves at reduced speed in the direction of rotation of the engine.

Center planetary gear set
Due to a mechanical connection the hollow gear (30/4) is driven at the same rotational speed as the planet carrier (31/3). The sun gear is supported at the housing via the multi-disk brake B2 (22) 30/1.

The planetary gears (30/2) revolve around the stationary sun gear (30/1) and ensure that torque is increased when power is transmitted from the ring gear (30/4) to the planet carrier (30/3). The output shaft (5) connected to the planet carrier (30/3) turns at a reduced speed in the direction of rotation of the engine.