GF27.10-P-3012AHW Power Flow In 2nd Gear, Function

GF27.10-P-3012AHW Power Flow in 2nd Gear, Function
TRANSMISSION 722.9 (except 722.930) in MODEL 204.0 as of model year 2009 /YoM 08
TRANSMISSION 722.9 (except 722.930) in MODEL 204.2 as of model year 2009 /YoM 08
TRANSMISSION 722.9 (except 722.930) in MODEL 204.3
TRANSMISSION 722.9 in MODEL 204.9





2 Turbine wheel
3 Stator
4 Impeller
5 Small ring gear
6 Dual planet carrier
7 Sun gear
8 Large ring gear
9 Ring gear
10 Planet carrier
11 Sun gear
12 Ring gear
13 Planet carrier
14 Sun gear
16 Torque converter lockup clutch
41 Multidisk brake BR
42 Multidisk brake B1
43 Multidisk brake B2
45 Multidisk brake B3
46 Multidisk clutch K1
47 Multidisk clutch K2
48 Multidisk clutch K3
49 Short planetary gears
50 Long planetary gears
51 Planetary gears
52 Planetary gears

A Input
B Output

Function requirements for power flow in 2nd gear, general
^ Circuit 87 (connected circuit 15) ON
^ Engine running

Power flow in 2nd gear, general
The following multidisk brakes and multidisk clutches are engaged:
- Multidisk brake B1 (42)
- Multidisk brake B2 (43)
- Multidisk clutch K3 (48)

Power flow in 2nd gear takes place via the following gear sets:
^ Ravigneaux gear set
^ Rear single planetary gear set
^ Front single planetary gear set

Ravigneaux gear set
The small ring gear (5) is driven via the transmission input shaft. The long planetary gears (50) roll over the stalled sun gear (7) and transmit the increased torque and reduced rotational speed as a result to the dual planet carrier (6).

Rear single planetary gear set
The ring gear (9) rotates at the same speed due to the mechanical connection to the dual planet carrier (6). The planetary gears (51) roll over the stalled sun gear (11) and transmit the rotary motion to the planet carrier (10).

Front single planetary gear set
The ring gear (12) has a mechanical connection to the planet carrier (10) and rotates at the same speed. The planetary gears (52) roll on the stalled sun gear (14) and transfer the increased torque and reduced rotational speed to the transmission output shaft via the planet carrier (13). The transmission output shaft thus rotates with reduced transmission input speed in the direction of rotation of the engine.