Difference between Fluid Coupling and Torque Converter

Difference between Fluid Coupling and Torque Converter in Tabular From

Fluid Coupling and Torque Converter Difference



  • The Key Difference between Fluid Coupling and Torque Converter is that Fluid Coupling transmits power of engine to gearbox through the fluid whereas Torque Converter transmits power of engine to automatic transmission system through the fluid.
Fluid Coupling and Torque Converter
Fluid Coupling and Torque Converter

Fluid Coupling vs Torque Converter Comparison Chart

Fluid Coupling Torque Converter
Fluid Coupling transmits power of engine to gearbox through the fluid. Torque Converter transmits power of engine to automatic transmission system through the fluid.
Fluid Coupling consists Two components

  1. Impeller
  2. Runner
 Torque Converter consists Three components

  1. Impeller pump
  2. Stator
  3. Turbine
It provides a flexible connection between driving and driven members. It serves the purpose of an automatic gearbox to increase torque. Therefore, it is called the torque multiplication unit.
The fluid flywheel transmits the same toque as given to it by the engine shaft. The torque convertor increases the torque in a ratio of about 2:1 to 3:1.
Its blades are merely fins. The turbine blade is inclined to have pitch.
Fluid Coupling is more efficient at highway speeds. Torque Converter is not efficient at highway speeds.
It does not use any other type of clutch. It is used with an automatic clutch.



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