Torque Converter and how its working

                             Torque Converter

Need for Torque Converter:

•Automatic transmission selects gear ratios according to engine

  speed, powertrain load, vehicle speed, and other operating

  factors

•Little effort is needed on the part of the driver, because both

  upshifts and downshifts occur automatically

•Driver-operated clutch is not needed to change gears, and the

  vehicle can be brought to a stop without shifting to neutral

•Great convenience, particularly in stop-and-go traffic

•Automatic transmissions use a fluid clutch known as a torque

  converter to transfer engine torque from the engine to the

  transmission.

Basic Operation of Torque Converter:

Fluid travel inside the torque converter:

 (A) Fluid at rest in the impeller/pump;

(B) fluid thrown up and outward by the spinning pump; and

(C) fluid flow harnessed by the turbine and redirected back into the pump