Centrifugal automatic transmission pressure regulator
A centrifugal pressure regulator is a mechanical device used in automatic transmissions (AT) to regulate transmission fluid pressure based on transmission speed.
Operating principle
The regulator consists of a rotating weight attached to the automatic transmission input shaft. As the rotation speed of the input shaft increases, the load overcomes the centrifugal force and moves outward from the center. This movement causes the valve to open, allowing pressurized transmission fluid to enter the transmission piston rods and change shift pressure.
When the rotation speed of the input shaft decreases, the centrifugal force decreases and the load returns to the center. This closes the valve and reduces transmission fluid pressure, resulting in smoother gear shifts.
Target
The purpose of a centrifugal pressure regulator is to:
* Adjustment of transmission fluid pressure depending on transmission speed
* Preventing premature wear and damage to internal automatic transmission components
* Ensuring smooth gear shifting by reducing transmission fluid pressure at low speeds and increasing it at high speeds
Advantages
* Simplicity of design
* Reliability and durability
* Does not require manual operation or electronic control
Restrictions
*May not provide accurate pressure control under extreme conditions
*May require periodic maintenance or adjustment