Mitsubishi 380. Manual — part 366

GENERAL DESCRIPTION

AUTOMATIC TRANSMISSION

23A-4

TRANSMISSION

The transmission is made up of the torque converter and gear train. A 3-element, 1-stage, 2-phase torque
converter with built-in torque converter clutch is used. The gear train is made up of four sets of multi-disc
clutches, two sets of multi-plate brakes, one band type brake, two set of one-way clutches and three sets of
planetary gears. The planetary gears are made up of sun gears, carriers, pinion gears and annulus gears.

.

TRANSMISSION CONFIGURATION DRAWING

.

COMPONENTS AND FUNCTIONS

10DB146A

OD

REV 2ND

LR

OWC

UD

OWC RED

DIR

COMPONENT

FUNCTION

Underdrive clutch

UD

connects the input shaft to the underdrive sun gear.

Reverse clutch

REV

connects the input shaft to the reverse sun gear.

Overdrive clutch

OD

connects the input shaft to the overdrive planetary carrier.

Direct clutch

DIR

connects the direct sun gear and direct planetary carrier.

Low-reverse brake

LR

holds the low-reverse annulus gear and the overdrive planetary
carrier.

Second brake

2ND

holds the reverse sun gear.

Reduction brake

RED

locks the direct sun gear.

One-way clutch(DIR)

OWC-D

restricts the rotation direction of the direct sun gear.

One-way clutch(LR)

OWC-LR

restricts the rotation direction of the low-reverse annulus gear.

GENERAL DESCRIPTION

AUTOMATIC TRANSMISSION

23A-5

FUNCTION ELEMENT TABLE

×: Function element −: Not applicable
NOTE: * operates only when the vehicle is stationary [at approximately 10 km/h (6.2 mph) or less].

OPERATING
ELEMENT

START

PARKING
MECHANI
SM

UNDER
DRIVE
CLUTCH
(UD)

REVERSE
CLUTCH
(REV)

OVER-
DRIVE
CLUTCH
(OD)

DIRECT
CLUTCH
(DIR)

LOW-
REVERSE
BRAKE
(LR)

SECOND
BRAKE
(2ND)

REDUCTI-
ON
BRAKE
(RB)

TRANSMISSION
RANGE

P

OK

×

−

−

−

×

−

×

R

−

−

−

×

−

×

−

×

N

OK

−

−

−

−

×

−

×

Sport
mode

1st

−

−

×

−

−

×*

−

×

2nd

−

−

×

−

−

−

×

×

3rd

−

−

×

−

×

−

−

×

4th

−

−

×

−

×

×

−

−

5th

−

−

×

×

×

GENERAL DESCRIPTION

AUTOMATIC TRANSMISSION

23A-6

SECTIONAL VIEW <F5A5A>

AC305544

1

4

3

2

5 6

7 8 9

19

11

12

13

14

15

16

17

18

10

20 21 22 23

24

10DB147A

1. OVERDRIVE

CLUTCH

2. REVERSE

CLUTCH

3. OVERDRIVE PLANETARY CARRIER
4. OUTPUT

PLANETARY

CARRIER

5. SECOND

BRAKE

6. LOW-REVERSE

BRAKE

7. ONE-WAY

CLUTCH

8. TRANSFER DRIVE GEAR
9. TRANSMISSION

CASE

10. UNDERDRIVE CLUTCH
11. OIL PUMP
12. TORQUE CONVERTER HOUSING

13. TORQUE CONVERTER CLUTCH
14. TORQUE CONVERTER
15. INPUT SHAFT
16. DIFFERENTIAL
17. REAR COVER
18. OUTPUT SHAFT
19. DIRECT CLUTCH
20. REDUCTION BRAKE BAND
21. DIRECT PLANETARY CARRIER
22. TRANSFER DRIVEN GEAR
23. OUTPUT GEAR
24. DIFFERENTIAL DRIVE GEAR

GENERAL DESCRIPTION

AUTOMATIC TRANSMISSION

23A-7

ELECTRONICALLY-CONTROLLED SYSTEM

.

INVECS-II

• When in drive ("D" range), the new automatic transmission

employs an innovative shift schedule to provide a high level
of comfort and "easy driving style" that matches all driving
conditions as well as the driver's driving style.

• INVECS-II features "Optimum Shift Control," which provides

shift timing the average driver perceives to be the optimum
timing under any road conditions. "Adaptive Shift Control"
adjusts shift timing to match the driving habits and prefer-
ences of individual drivers.

.

INVECS-II Sports Mode Automatic Transmission

A further development of the INVECS-II automatic transmis-
sion, incorporating a sports mode that enables quasi-manual
gear shifts. When the gear shift lever is pushed sideways fronm
the "D" position to the sports mode position, the driver can use
it to make gear selections manually. The sports mode has the
following features.

• In contrast to the automatic "D" range, the sports mode

does not perform automatic upshifts. Thus, the engine can
be driven fully into its red zone.

• For more rapid gear shifting, it is possible to shift directly

from 4th gear to 2nd gear, therby skipping a gear.

• When the vehicle decelerates and stops, the system auto-

maticaly shifts down to 1st gear for conveinience when the
vehicle starts moving again. Further, 2nd gear can be
selected with the vehicle stationary, so standing starts can
be made in 2nd gear on slippery surfaces.

.

AC000841AB

WITH INVECS-II

WITHOUT
INVECS-II

OPTIMUM SELECTION OF GEARS

LEVEL ROAD

ALL DRIVING CONDITIONS

DRIVER'S HABITS AND
PREFERENCE

10DB155A