Power Flow In 2ND Gear

Component Illustration:

Principle Of Power Transmission In 2nd Gear:
Torque from the torque converter is increased via the propeller shaft (1) and the center and rear planetary gearset and transferred to the output shaft (5).

Front Planetary Gearset:
The planet carrier (V3) and sun gear (V1) are connected via the engaged multiple-disc clutch K1. The planetary gearset is therefore blocked and turns as a closed unit at the input speed due to the mechanical connection of the ring gear (V4) and propeller shaft.

Rear Planetary Gearset:
The ring gear (H4) turns at the input speed as a result of the mechanical connection to the front planet carrier (V3).

The sun gear (H1) is held against the housing by the engaged multiple-disc brake B2, by the locked freewheel F2 during acceleration and by the engaged multiple-disc clutch K3 during deceleration. The planet gears (H2) turn on the fixed sun gear (H1) and increase the torque from the ring gear (H4) to the planet carrier (H3). The planet carrier (H3) moves at a reduced speed in the running direction of the engine.

Center Planetary Gearset:
The ring gear (M4) is driven at the same speed as the rear planet carrier (H3) as a result of a mechanical connection. The sun gear (M1) is held against the housing by the multiple-disc brake B2. The planet gears (M2) turn on the fixed sun gear (M1) and increase the torque from the ring gear (M4) to the planet carrier (M3). The output shaft (5) connected to the planet carrier (M3) turns at a reduced speed in the running direction of the engine.

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