Torque from the tor que con verter is increased via
the input shaft (25) and the cen ter pla neta ry gear set
and tra nsferr ed to t he output sha ft (26). (Fig. 6) (Fig.
7)
Front Planetary Gear Set
The pla neta ry ca rrier (13) and sun gear (21) are
connect ed via the engaged m ultiple-disc clutch K1
(7). The planetary gea rset is therefor e locked and
turns a s a closed u nit at the in pu t speed due to the
mecha nica l connection of th e a nnulus gear (8) and
input sh aft (25).
Rear Planetary Gear Set
The m ult iple-disc clu tch K2 (9) is engaged and
transfers the input speed of the inpu t shaft (25) t o
the planetar y carrier (15) via the annulus gear (10).
The annulus gear (11) turns in the same way as th e
planet ary ca rrier (15) due t o t he mechanica l connec-
tion wit h the locked front pla neta ry gearset . This
planet ary gearset is therefor e locked an d tu rns as a
closed unit.
Center Planetary Gear Set
The a nnulus gear (10) turn s at the input speed as
a result of the en gaged multiple-disc clut ch K2 (9).
The su n gear (22) is held again st the housing by the
multiple-disc holding clu tch B2 (6). Th e planet ary
pinion gea rs (18) t urn on t he fixed su n gear (22) and
increase the torqu e from th e ann ulus gear (10) to the
planet ary carrier (14). The out pu t shaft (26) con-
nected to th e pla neta ry carrier (14) tu rns at a
reduced speed in t he running direct ion of the en gine.
Fig. 7 Third Gear Powerflow
1 - TORQUE CONVERTER LOCK-UP CLUTCH 14 - CENTER PLANETARY CARRIER
2 - TORQUE CONVERTER TURBINE 15 - REAR PLANETARY CARRIER
3 - TORQUE CONVERTER IMPELLER 16 - TORQUE CONVERTER STATOR
4 - HOLDING CLUTCH B1 17 - FRONT PLANETARY PINION GEARS
5 - HOLDING CLUTCH B3 18 - CENTER PLANETARY PINION GEARS
6 - HOLDING CLUTCH B2 19 - REAR PLANETARY PINION GEARS
7 - DRIVING CLUTCH K1 20 - FREEWHEELING CLUTCH F1
8 - FRONT PLANETARY ANNULUS GEAR 21 - FRONT PLANETARY SUN GEAR
9 - DRIVING CLUTCH K2 22 - CENTER PLANETARY SUN GEAR
10 - CENTER PLANETARY ANNULUS GEAR 23 - REAR PLANETARY SUN GEAR
11 - REAR PLANETARY ANNULUS GEAR 24 - FREEWHEELING CLUTCH F2
12 - DRIVING CLUTCH K3 25 - INPUT SHAFT
13 - FRONT PLANETARY CARRIER 26 - OUTPUT SHAFT
A - ENGINE SPEED C - FIRST GEAR RATIO
B - TRANSMISSION INPUT SPEED D - FIXED PARTS
VA AUTOMATIC TRANSMISSION NAG1 - SERVICE INFORMATION 21 - 13
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