The component of the torque converter that redirects the flow of oil to impeller is, multiple choice question is given below:

Q. The component of the torque converter that redirects the flow of oil to impeller is

(a) turbine
(b) impeller
(c) stator
(d) freewheel

Ans:  (c) stator


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The torque converter is a critical component in automatic transmissions, responsible for transmitting power from the engine to the transmission. It is a hydrodynamic device that utilizes a complex system of fluid flow and pressure to smoothly transfer power. One essential part of the torque converter is the stator, which plays a important role in redirecting the flow of oil to the impeller.

To understand the function of the stator, let’s first explore the basic principles of a torque converter. Inside this ingenious device, there are three primary elements: the impeller, the turbine, and the stator. The impeller is connected to the engine and is responsible for driving the fluid within the torque converter. The turbine, on the other hand, is connected to the transmission and receives the power transmitted by the impeller. Finally, we have the stator, which is located between the impeller and the turbine.

The impeller and the turbine consist of a series of blades or vanes that are shaped in a curved manner. As the impeller rotates, it creates a swirling motion within the fluid. This motion, known as the “whirling” or “circulating” motion, causes the fluid to move towards the turbine. The fluid’s kinetic energy is then transferred to the turbine, resulting in the rotation of the transmission.

Now, here’s where the stator comes into play. The stator is a stationary component located in the center of the torque converter. It contains its own set of blades or vanes, similar to the impeller and turbine. However, unlike the impeller and turbine, the stator can change its angle of attack.

When the fluid flows from the impeller to the turbine, it creates a rotating motion, or torque, in the turbine. However, once the fluid leaves the turbine, it would typically create a significant amount of turbulence, resulting in power loss and inefficiency. This is where the stator plays a vital role.

The stator redirects the flow of oil as it leaves the turbine and re-directs it back towards the impeller. By adjusting its angle of attack, the stator can “reverse” the direction of the fluid flow, counteracting the turbulence and redirecting the fluid more efficiently. This redirection of the fluid’s energy back to the impeller allows for increased torque multiplication, improving the torque converter’s efficiency and power transmission.

In summary, the component of the torque converter that redirects the flow of oil to the impeller is known as the stator. It acts as a crucial intermediary between the impeller and the turbine, effectively reversing the fluid flow and improving the torque converter’s overall efficiency. By harnessing the principles of fluid dynamics, the stator ensures that power is transmitted smoothly and efficiently from the engine to the transmission, ultimately enhancing the performance and drivability of vehicles equipped with automatic transmissions.

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