AIRCRAFT ENGINE SPEED REGULATOR MECHANISM

Upon an increase in engine speed, weights 1 of the centrifugal governor move outward and, turning about axes O, compress conical spring 2. This raises valve spool 3 and hydraulic fluid from sleeve 4 is discharged through channel 5 to the engine crankcase. As a result, the propeller pitch increases, increasing the power required to drive the propeller and, consequently, reducing the engine speed. A…