They contain the pendulum-based mostly Constantinesco torque converter, the Lambert friction gearing disk generate transmission and the Variomatic with increasing pulleys plus a belt drive. The engine may rotate relatively independently in the gearbox thanks to this hydraulic connection, which replaces the job from the clutch present in guide transmissions. https://torqueconverterclutch06272.full-design.com/considerations-to-know-about-torque-converter-clutch-76627250