With the three-passage torque converter, two passages are utilized for transmission oil (ATF) stream from the torque converter and for clutch cooling, when the 3rd passage is made use of independently to regulate the lock and unlock with the clutch. The a lot quicker it spins, the higher the force. https://torque-converter-clutch64185.blogoxo.com/34144519/torque-converter-clutch-fundamentals-explained