6R80 torque converter

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May 21, 2025
The torque converter in an automatic transmission serves several key functions:

Torque Multiplication – At low speeds (e.g., during acceleration), it multiplies engine torque to improve vehicle launch performance.

Smooth Power Transfer – Allows the engine to keep running while the vehicle is stationary (no need for a clutch like in manual transmissions).

Fluid Coupling – Uses transmission fluid to transfer power from the engine to the transmission, reducing shock and vibration.

Automatic Disengagement – When the vehicle stops, the torque converter prevents stalling by allowing slippage between the engine and transmission.