Depending on the number of passages (ports) for controlling the oil flow throughout the torque converter clutch, there are numerous varieties of torque converters: Hydraulic Circuit: The technique of channels and passages that direct transmission fluid to engage the TCC, allowing with the seamless transition amongst locked and unlocked states. https://torque-converter-clutch75296.ampedpages.com/the-smart-trick-of-torque-converter-clutch-that-nobody-is-discussing-60952889