Torque from the tor que con verter is increased via
the input sh aft (25) and a ll thr ee pla neta ry gear sets
and tra nsferr ed to t he output sha ft (26). (Fig. 2) (Fig.
3)
Front Planetary Gear Set
The ann ulu s gea r (8) is driven by t he input shaft
(25). The sun gear (21) is held again st th e housing by
the locked fr eewheel F1 (20) during accelerat ion and
via the engaged mu ltiple-disc holding clutch B1 (4)
du ring decelera tion . The pla neta ry pinion gears (17)
turn on t he fixed sun gear (21) and increa se the
torqu e from the ann ulus gear (8) t o the planetary
carrier (13). The plan etar y carrier (13) moves at a
reduced speed in t he running direct ion of the en gine.
Rear Planetary Gear Set
The annulus gea r (11) turns at a r edu ced speed
du e to the mechanical conn ection to t he front plane-
tary car rier (15). The sun gear (23) is held aga inst
the housing by the engaged m ultiple-disc holdin g
clutch B2 (6), by t he locked freewheel F2 (24) dur ing
accelerat ion and by th e engaged multiple-disc clu tch
K3 (12) dur ing decelerat ion. The pla neta ry gear s (19)
turn on t he fixed sun gear (23) and increa se the
torqu e from the a nnulus gear (11) to the planetary
carrier (15). The plan etar y carrier (15) moves at a
reduced speed in t he running direct ion of the en gine.
Center Planetary Gear Set
The ann ulus gea r (10) is driven at the same speed
as the rear planetary car rier (15) as a r esult of a
Fig. 3 First 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 D - SECOND GEAR RATIO
B - TRANSMISSION INPUT SPEED E - THIRD GEAR RATIO
C - FIRST GEAR RATIO F - FIXED PARTS
VA AUTOMATIC TRANSMISSION NAG1 - SERVICE INFORMATION 21 - 7
To Next Page
Loading...
