Centrifugal automatic transmission regulator
A centrifugal governor is a mechanical device in an automatic transmission (AT) that is used to regulate transmission fluid pressure.
Operating principle
The regulator consists of weights that rotate on an axis attached to the automatic transmission shaft. As the rotation speed of the shaft increases, centrifugal force causes the weights to move outward. This movement is associated with a lever that operates a valve that regulates transmission fluid pressure.
Functions
*Transmission Fluid Pressure Regulation: The centrifugal regulator regulates the transmission fluid pressure depending on the rotational speed of the shaft. High pressure is required at high speeds to ensure sufficient lubrication and power transmission. Low pressure is required at low speeds where there is less friction and less power required.
*Preventing gearshifts at too high a speed: If the vehicle accelerates too quickly, the centrifugal regulator increases transmission fluid pressure, preventing the gears from shifting to a higher gear. This protects the transmission from damage.
* Smooth Downshifts: When decelerating or braking, the centrifugal regulator reduces transmission fluid pressure, allowing you to shift to lower gears. This ensures smooth and efficient downshifting.
Design
A centrifugal regulator usually consists of:
* Weights rotating on an axle
* Lever connected to weights
* Valve controlled by lever
* Springs that counteract centrifugal force
Meaning
The centrifugal governor plays a critical role in the smooth and efficient operation of the automatic transmission. It maintains optimal transmission fluid pressure under a variety of driving conditions, resulting in longer service life and reduced wear.