What is a fluid coupling torque converter?

A torque converter is a type of fluid coupling that transfers rotating power from a prime mover, like an internal combustion engine, to a rotating driven load. It is usually located between the engine’s flexplate and the transmission.

What is a difference between a fluid coupling and fluid torque converter?

Fluid coupling transmit torque from engine to gear box through fluid while torque convertor transmits torque from engine to automatic transmission through fluid.

What is the function of fluid coupling?

A fluid coupling or hydraulic coupling is a device used for transmitting power from one shaft to another shaft by means of acceleration and deceleration of a hydraulic fluid. Fluid coupling is based on hydro-kinetic principles and requires that the output speed be less than the input.

What is the main advantage of a torque converter over a fluid coupling?

As a type of fluid coupling, a torque converter transfers rotating power from a prime mover to a rotating driven load. The latter helps to connect the power source to the load in an automatic transmission.

How does fluid coupling work in a torque converter?

After sometime the speed of both impeller and turbine becomes equal. In this way power is transmitted from one shaft to another by the use of fluid coupling. In same way torque converter works but the difference is that it has stator placed in between impeller and turbine for torque multiplication.

How is the efficiency of a torque converter improved?

However, torque converter efficiency is improved whenever the torque reaction on the fluid is zero by allowing the reactor to rotate freely. The torque converter is filled with transmission fluid that is caused to circulate through the pump-turbine-reactor by rotation of the pump by the engine crankshaft rotation.

How does a pressure pump work in a torque converter?

The fluid pressure supplied by a pressure pump then automatically directs fluid to the various operating pistons causing their respective clutch, clutches or band brakes to be applied.

How are the members of a torque converter connected?

Thus, a torque converter consists of three principle member, instead of two, these are: Driving member or impeller or pump, which is connected to the engine. Driving member or rotor or turbine, which is connected to the propeller shaft.