How does a stator work in a torque converter?

How does a stator work in a torque converter? The stator sends the fluid returning from the turbine to the pump. The stator resides in the very center of the torque converter. Its job is to redirect the fluid returning from the turbine before it hits the pump again. This dramatically increases the efficiency of the torque converter.

What is the purpose of a stator in a torque converter? The stator keeps the transmission fluid, which is turning in the opposite direction of the engine, from hitting the converter housing and slowing it down. A torque converter also has a housing that is attached to the engine along with the impeller.

How does a stator multiply torque? The stator redirects oil from the turbine into the faster-rotating impellor blades to multiply torque. During deceleration, the direction of oil flow in the converter reverses because the turbine becomes the driving component. The stator must then freewheel to allow the oil to reverse its direction of flow.

What is the function of the stator in transmission? Located at the very heart of the torque converter, the Stator main function is to redirect the fluid from the turbine back to the pump, thereby enhancing the efficiency of the torque converter. The torque converter assembly is a fluid coupling which transfers engine torque to the automatic transmission gear box.

How does a stator work in a torque converter? – Related Questions

What happens when the stator is unlocked?

The stator’s overrunning clutch enables the stator to spin freely in one direction but keeps it from rotating in the other. If the stator’s one-way clutch spins freely while at low speeds, there will be a loss of torque multiplication, resulting in poor low-speed performance.

What does the impeller do in a torque converter?

The torque converter casing connects to the flywheel, spinning at the same rate as the crankshaft, within the housing of the turbine. The impeller or centrifugal pump effectively flings the transmission fluid into the fins of the turbine that in turn spins or transmits the torque into the transmission.

How does a stator in a torque converter work?

The stator sends the fluid returning from the turbine to the pump. The stator resides in the very center of the torque converter. Its job is to redirect the fluid returning from the turbine before it hits the pump again. This dramatically increases the efficiency of the torque converter.

Does the stator turn?

As the magnetic field of the stator rotates, due to the effect of the three-phase AC power supply, the induced magnetic field of the rotor is attracted and will follow the rotation. The rotor is connected to the motor shaft, so the shaft rotates and drives the connection load.

Does the torque converter multiply torque?

In a vehicle with an automatic transmission, the torque converter connects the power source to the load. This is a feature beyond that of the simple fluid coupling, which can match rotational speed but does not multiply torque, thus reduces power.

What is the torque multiplication factor in the torque converter with a stator?

The stator (in the middle, between the impeller and the turbine) plays a role in directing the fluid so that it efficiently interacts with the impeller and the turbine. A characteristic of a TC is that it multiples torque, by a factor as much as 2-2.5 times or even more, depending on the design.

What is torque multiplication in automatic transmission?

The torque multiplier effect means that a vehicle equipped with an automatic transmission and torque converter will output more torque to the drive wheels than the engine is actually producing.

What happens when transmission pump fails?

When your transmission pump has gone bad, the fluid will not be able to circulate in the transmission properly. Consequently, the system will start to overheat, burning the fluid. As part of your car maintenance routine, you should always check your transmission fluid.

What causes transmission pump failure?

Low Fluid. Low fluid is one of the most common causes of problems for transmission oil pumps. Without a sufficient amount of transmission fluid, the transmission oil pump will not have anything to pump and can overheat or burn up.

Why does the stator only turn in one direction?

The stator sends the fluid returning from the turbine to the pump. This improves the efficiency of the torque converter. Because of this arrangement, the stator cannot spin with the fluid — it can spin only in the opposite direction, forcing the fluid to change direction as it hits the stator blades.

What is the purpose and function of a lock-up part of the torque converter?

Slipping reduces fuel economy and heat can damage the converter and the transmission. The solution is to lock the converter. Lock-up eliminates the slippage, which reduces heat and improves fuel economy.

How does lockup mechanism work?

Torque converter lock-up is engaged through a solenoid mounted inside the transmission. When the solenoid is energized it redirects the fluid flow back through the input shaft to put pressure against the clutch assembly allowing it to engage with the front of the torque converter.

What does an impeller do?

WHAT DO IMPELLERS DO? Impellers pump cold water into your boat’s engine to cool it down while in use. If you have a bad impeller it can cause big problems.

What is an impeller in a transmission?

Impeller. The impeller, also called the pump, is responsible for transferring the energy from the engine into the transmission oil, which the torque converter is completely full of. As shown in the image to the left, as the impeller spins, fluid is taken in at its center and is pushed outwards through the fins.

What is the main function of stator core?

The primary functions of a stator core are: (1) to hold the stator windings in place, and (2) to transmit flux. A stator core in a large AC machine is constructed from thin laminated sheets of electrical grade steel such as ASTM A 345.

What is the difference between stator and armature?

The armature is the winding to which the load is connected. In small generators, the field windings are often on the stator, and the armature windings are on the rotor. In DC machines, both motors and generators, the armature is the rotor, and the field is the stator.

What is the function of stator winding?

A synchronous generator consists of a stator with stator winding, and rotor with rotor field winding. When the current passes through the rotor winding, this generates a rotating magnetic field. This rotating field energizes the stator winding and generates an electromotive force (emf).

What does a Sprag do in a torque converter?

Simply put, a sprag is a one way clutch, functioning just as a ratchet does in your toolbox. It is locking in one direction and freewheeling in the other direction. Every torque converter manufactured by OEMs has a sprag. A functioning sprag is very important for a street car making 100-200 HP and 500-3000 rpms.

How stator winding is done?

Stator winding refers to the winding installed on the stator, that is, copper wire wound around the stator. Winding is a general term for a single phase or entire electromagnetic circuit composed of multiple coils or coils. At present, most of the stators of AC motors are distributed windings.

Why do we need torque multiplication from the torque convertor?

The multiplication factor is based on the speed difference between the turbine and impeller. At stall speed, the impeller is spinning at engine rpm and the turbine is stopped. This creates the greatest speed difference between the turbine and the impeller and therefore the maximum torque multiplication.

Which is better torque converter or CVT?

Torque converter transmissions offer big torque at low revs, but are generally less efficient than single and dual-clutch transmissions. CVTs offer nearly an infinite number of gear ratios, meaning your engine is always working at peak efficiency, regardless of speed.