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

GF27.10-P-3011N Power Flow in 1st Gear, Function
TRANSMISSION 722.9 in MODEL 171.4, 203, 230 up to Model Year 2008
TRANSMISSION 722.9 in MODEL 209, 211, 215, 219, 220
TRANSMISSION 722.9 in MODEL 463.303 /340 /341 up to 31.5.12





2 Turbine wheel
3 Stator
4 Impeller
5 Small internal-geared wheel
6 Dual planet carrier
7 Sun gear
8 Large internal-geared wheel
9 Internal gear
10 Planet carrier
11 Sun gear
12 Internal gear
13 Planet carrier
14 Sun gear
16 Torque converter lockup clutch

A Input
B Output
BR Multi-disk brake BR
B1 Multiple-disc brake B1
B2 Multiple-disc brake B2
B3 Multiple-disk brake B3
K1 Multi-disk clutch K1
K2 Multi-disk clutch K2
K3 Multi-disk clutch K3
PL2k Short planet gears
PL2l Long planet gears
PL6 Planet gears
PL9 Planet gears

The Ravigneaux gear set consists of the following components:
^ Short planet gears (PL2k)
^ Long planet gears (PL2l)
^ Small internal-geared wheel (5)
^ Dual planet carrier (6)
^ Sun gear (7)
^ Large internal-geared wheel (8)

The single front planetary gear system consists of the following components:
^ Planet gears (PL9)
^ Internal-geared wheel (12)
^ Planet carrier (13)
^ Sun gear (14)

The single rear planetary gear system consists of the following components:
^ Planet gears (PL6)
^ Internal-geared wheel (9)
^ Planet carrier (10)
^ Sun gear (11)

Power flow in 1st gear function
The following multi-disk brakes and multi-disk clutches are engaged:
^ Multi-disk brake B2 (B2)
^ Multi-disk brake B3 (B3)
^ Multi-disk clutch K3 (K3)

Ravigneaux gear set
The small internal-geared wheel (5) is driven via the transmission input shaft. The long planet gears (PL2l) drive the short planet gears (PL2k) which roll in the stalled large internal-geared wheel (8). As a result an increased torque and a reduced rpm arise which are transferred to the dual planet carrier (6).

Single rear planetary gear system
The internal-geared wheel (9) rotates at the same speed due to the mechanical connection to the dual planet carrier (6). The planet gears (PL6) roll over the stalled sun gear (11) and transmit the rotary motion to the planet carrier (10).

Single front planetary gear system
The internal-geared wheel (12) has a mechanical connection to the planet carrier (10) and rotates at the same speed. The planet gears (PL9) roll on the stalled sun gear (14) and transfer the increased torque and reduced rotational speed as a result to the transmission output shaft via the planet carrier (13).

The transmission output shaft therefore rotates in the direction of rotation of the engine at reduced rpm relative to the transmission input shaft.