Power Flow In Reverse Gear, Program Selection "W", Function (Up To 4/23/04)
Principle Of Power Flow In Reverse Gear
Program section "W".
Torque from the torque converter is increased via the drive shaft (1) and the center planetary gearset and transferred with reversed direction of rotation to the output shaft (5). See Fig 1.
The following components are not engaged:
- Front Multi-Disc Brake (B1)
- Rear Multi-Disc Brake (B2)
- Freewheel (F1)
- Freewheel (F2)
- Center multi-disc clutch.
Front Planetary Gear Set
The planet carrier (V3) and sun gear (V1) are rigidly connected via the engaged front multi-disc clutch (K1). The planetary gearset is therefore locked and turns as a closed unit at the input speed due to the mechanical connection of the internal-geared wheel (V4) and drive shaft (1).
Rear Planetary Gear Set
The engaged center multi-disc brake (B3) holds the planet carrier (H3) against the housing. The internal geared wheel (H4) turns at the input speed because of its mechanical connection with the locked planet carrier (V3). The planet gears (H2) turn between the internal-geared wheel (H4) and the sun gear (H1). The direction is reversed by the fixed planet carrier (H3) so that the sun gear (H1) turns in the opposite direction to the running direction of the engine.
Center Planetary Gear Set
The internal geared wheel (M4) is held against the housing by the center multi-disc brake (B3) via the mechanical connection with the planet carrier (H3). The sun gear (M1) turns backwards due to the engaged rear multi-disc clutch K3. The planet gears (M2) turn on the fixed internal-geared wheel (M4) and increase the torque from the sun gear (M1) to the planet carrier (M3). The output shaft (5) connected to the planet carrier (M3) turns at a reduced speed in the opposite direction to the running direction of the engine.
- Torque Converter, Location/Task/Design/Function
See TORQUE CONVERTER, LOCATION/TASK/DESIGN/FUNCTION (UP TO 4/24/04) . - Planetary Gear Set, Location/Task/Design/Function
See PLANETARY GEAR SET, LOCATION/TASK/DESIGN/FUNCTION (UP TO 4/24/04) . - Multi-Disc Brake, Location/Task/Design/Function
See MULTIPLE-DISC BRAKE, LOCATION/TASK/DESIGN/FUNCTION (UP TO 4/24/04) . - Multi-Plate Clutch, Location/Task/Design/Function
See MULTI-PLATE CLUTCH, LOCATION/TASK/DESIGN/FUNCTION (UP TO 4/24/04) . - Freewheel, Location/Task/Design/Function
See LOCATION/TASK/DESIGN/FUNCTION OF FREEWHEEL (UP TO 4/24/04) .