Damper Clutch Control

The Lock-up clutch is designed in a torque converter for the fuel economy. The lock-up clutch works in low speed range as minor slip. And it operates in high speed range as Full lock-up. Low fuel consumption and silence can be obtained with combination of Partial lock-up and Full lock-up control. The damper clutch is operated in 3rd and 4th gear in 4-speed ATA, 4th and 5th gear in 5ATA. In addition, Lock-up control is adapted in order to improve the fuel economy, when reducing vehicle speed too.