| 摘要 |
A pneumatic motor governor including a valve port located in the motor supply passage and axially aligned with the motor. The end of the motor carries a spindle and a closed end valve sleeve is slidably mounted on the spindle to reciprocate toward and away from the valve port to throttle air flowing through the port and between the port and the closed end of the valve sleeve. The closed end of the sleeve includes a small hole to allow the air pressure beneath the closed end to balance itself with the pressure on the top or outer face of the closed end, thereby preventing the air pressure in the inlet air from creating forces interfering with the free operation of the valve sleeve. The valve sleeve is moved back and forth by a system of conventional flyweights mounted on the motor spindle.
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