PRINCIPLES GASOLINE/DIESEL FUEL SYSTEMS - OD1620 - LESSON 2/TASK 2
c. Mechanical (Centrifugal) Governors (figure 58).
(1) The operation of the mechanical governor is based on the
centrifugal force of rotating weights counterbalanced by springs. When the
speed of the engine increases, the weights fly outward, pulling with them
suitable linkage to change the setting of the pump control rod. The
governor linkage is connected to the injection pump in such a manner that
the spring moves the control mechanism toward the fullfuel position. The
outward movement of the governor flyweights, through the sliding governor
sleeve, will move the pump control rod toward the nofuel position against
the force of the governor spring.
FIGURE 58. MECHANICAL (CENTRIFUGAL) GOVERNOR.