Automatic Transmission/Transaxle: Description and Operation

AUTOMATIC TRANSAXLE SYSTEM

DESCRIPTION
1. Structure & Technical highlights





2. Variable Line Pressure Control
^ Description
- Form the most suitable line pressure according to the vehicle driving condition
^ Special Features
- VFS (Variable Force Solenoid) valve (For varying line pressure)
- Reducing valve added (Stabilize control pressure in shiftings)
^ Effects
- Improved power transmission efficiency and fuel consumption





3. Gear durability improvement and less-noisy gear development
^ Description
- Optimal gear transmission ratio design from analyzing gears
^ Special Features
- Apply High-strength gear material
- Gear teeth width increased
- Planetary gear (3 pinions - 4 pinions)
- Less-noisy gear development
^ Effects Durability improvement Reduction of noise level

4. Case/Housing intensity reinforced
^ Description
- Case/Housing intensity reinforced
^ Special Features
- Converter hosing intensity reinforced (Ribs added and thickness increased)
- Most suitable stiff reinforcement through analyzing
^ Effects
- Intensity increased and banding vibration decreased NVH Performance improvement

5. New frictional material
^ Description
- Apply new frictional material for capacity and durability improvement
- Special Features
- SSP (Single Sided Plate) applied only on overdrive clutch and 2nd brake
- Apply the next generation frictional material (BWA 61 00/D 0880-88)
^ Effects
- Thermal absorption capacity improvement
- Energy capacity and durability improvement