GF27.10-P-3015SXA Power Flow In 5th Gear, Function

GF27.10-P-3015SXA Power flow in 5th gear, function
- Transmission 722.6









Principle of power transmission in 5th gear
Via the drive shaft (1) and involving all 3 planetary gear sets, the torque coming from the torque converter is reduced and transmitted to the output shaft (5).

The following are not engaged:
^ Multi-disk brake B2 (22)
^ Multi-disk brake B3 (23)
^ Freewheel F2 (28)
^ Multi-disk clutch K1 (24)

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 planet gears (29/2) revolve around the fixed sun gear (29/1) and provide an increase in torque between the internal gear (29/4) and 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 multi-disk clutch K2 (25) is engaged and transmits the input speed of the drive shaft (1) via the ring gear (31/4) to the planet carrier (31/3). The ring gear (31/4) rotates at reduced speed due to the mechanical connection to the planet carrier (29/3). The planet gears (31/2) turn between the ring gear (31/4) and the sun gear (31/1). The sun gear (31/1) moves at an increased speed in the running direction of the engine.

Center planetary gear set
Due to the engaged multi-disk clutch K2 (25) the ring gear rotates at input speed. Due to the connection to the sun gear the multidisk clutch K3 (26) transmits (31/1) an increased rotational speed to the sun gear (30/1). The planet gears (30/2) revolve between the ring gear (30/4) and the sun gear (30/1). The speed of the planet carrier (30/2) and output shaft (5) connected to it is between the ring gear (30/4) and sun gear (30/1). This provides a step-up ratio.