Mitsubishi Eclipse Technical Information Manual page 162

First Gear
Underdrive clutch applied
(turns rear sun)
In first gear range, torque input is through the under-
drive clutch to the underdrive hub assembly. The
underdrive hub is splined to the rear sun gear. When
the underdrive clutch is applied, it rotates the under-
drive hub and rear sun gear. The UR clutch is applied
to hold the front carrier/rear annulus (ring gear)
assembly.
The rear sun gear drives the rear planetary pinion
gears. The rear planetary pinion gears are forced
Second Gear
Second gear is achieved by having both planetary
gear sets contribute to torque multiplication. As in
first gear, torque input is through the underdrive
clutch to the rear sun gear. The 2-4 clutch is applied
to hold the front sun gear stationary. The rotating
rear sun gear turns the rear planetary pinions. The
POWER TRAIN
Underdrive clutch applied
(turns rear sun)
Low-reverse clutch applied
(holds rear annulus/front carrier)
to "walk around" the inside of the stationary rear
carrier and cause the rear carrier assembly to rotate
as they "walk around" the annulus gear. This pro-
vides the torque output for first gear. The other plane-
tary gearset components are freewheeling. The first
gear ratio is 2.84:1.
2-4 clutch applied
(holds front sun)
rear pinions rotate the rear annulus/front carrier as-
sembly. The pinions of the front carrier will "walk
around" the stationary front sun gear. This transmits
torque to the front annulus/rear carrier assembly
which provides output torque and a gear ratio of
2-49