Kia Carnival (2009+). Instruction — part 146

Automatic Transaxle System

Automatic Transaxle System

Automatic Transaxle System

2009 > G 3.8 DOHC >

DESCRIPTION

1. Structure & Technical highlights

2. Variable Line Pressure Control

A. Description

- Form the most suitable line pressure according to the vehicle driving condition

B. Special Features

- VFS (Variable Force Solenoid) valve (For varying line pressure)
- Reducing valve added(Stabilize control pressure in shiftings)

C. Effects

- Improved power transmission efficiency and fuel consumption

3. Gear durability improvement and less-noisy gear development

A. Description

- Optimal gear transmission ratio design from analyzing gears

B. Special Features

- Apply High-strength gear material
- Gear teeth width increased
- Planetary gear (3 pinions ! 4 pinions)
- Less-noisy gear development

C. Effects

- Durability improvement
- Reduction of noise level

4. Case/Housing intensity reinforced

A. Description

- Case/Housing intensity reinforced

B. Special Features

- Converter housing intensity reinforced(Ribs added and thickness increased)
- Most suitable stiff reinforcement through analyzing

C. Effects

- Intensity increased and banding vibration decreased
- NVH Performance improvement

5. New frictional material

A. Description

- Apply new frictional material for capacity and durability improvement

B. Special Features

- SSP (Single Sided Plate) applied only on overdrive clutch and 2nd brake
- Apply the next generation frictional material(BWA 6100/D 0880-88)

C. Effects

- Thermal absorption capacity improvement
- Energy capacity and durability improvement

MECHANICAL SYSTEM

CLUTCHES AND BRAKES FOR EACH RANGE

UD

Clutch

OD

Clutch

2ND

Brake

LR Brake

REV

Clutch

RED

Brake

DIR

Clutch

OWC 1

OWC 2

P

-

-

-

O

-

O

-

-

-

R

-

-

-

O

O

O

-

-

-

N

-

-

-

O

-

O

-

-

-

D

1st

O

-

-

O

-

O

-

"

"

2nd

O

-

O

-

-

O

-

-

"

3rd

O

O

-

-

-

O

-

-

"

4th

-

O

O

-

-

O

-

-

"

5th

-

O

O

-

-

-

O

-

-

(" : Locked when driving)
FUNCTIONS OF CLUTCHES AND BRAKES

Element

Sign

Function

Underdrive clutch

UD

Connect the input shaft with the underdrive sun gear

Reverse clutch

REV

Connect the input shaft with the reverse sun gear

Overdrive clutch

OD

Connect the input shaft with the overdrive carrier

Direct clutch

DIR

Connect the direct sun gear with the direct carrier

Low& Reverse brake

LR

Fix the planetary gear and the overdrive carrier

2nd brake

2ND

Fix the reverse sun gear

Reduction brake

RED

Fix the direct sun gear

One way clutch 1

OWC 1

Control the rotational driection of the low&reverse ring gear

One way clutch 2

OWC 2

Control the rotational driection of the direct sun gear

AUTOMATIC TRANSAXLE HYDRAULIC CIRCUIT

P/N