Planetary Gear Differential - Mercedes-Benz GLK-Class Service Manual

1 Sun gear
2 Planet carrier
3 Dual planetary gear set
The planetary gear differential distributes the engine
torque from the automatic transmission to the output
for the front and rear axle.
The ring gear is connected to the output shaft of the
automatic transmission. It transmits the engine torque
output by the automatic transmission to the dual plan-
etary gear set.
The planet carrier provides the output to the rear axle
and the sun gear transmits the engine torque to the
front axle via the side output.
Introduction of the New GLK-Class (USA), Introduction into Service Manual for Model Series 204

Planetary gear differential

4 Ring gear
5 Planetary gear guide
i
The ratio by which the engine torque is distributed
results from the gear ratio of the ring gear relative
to the sun gear.
v 55