ENGINE
EA330-E4, WSM
1-M21
[4] GOVERNOR MECHANISM
The governor maintains the constant engine speed and at the same time controls the output. The centrifugal
mechanical governor used in this engine is an all-speed type which controls engine speed at any point between idling
and maximum speed positions.
At Starting
When the speed control lever (7) is moved in the direction "A", the governor lever (6) is pulled in the direction "C"
by the force the governor spring (1). At this time, the governor weight (4) has no active centrifugal force, since the
engine is not rotating. Thus, the control rack (10) moves to the maximum fuel injection position to facilitate starting of
the engine.
At Idling
When the speed control lever (7) is set in the idling position, the governor spring (1) is almost relaxed and the
idling spring (9) of small tension alone is at work. This idling spring works in the direction "C" (to increase fuel supply).
To the contrary, the governor weight (4) extends by the centrifugal force in the direction of "E" to push the governor
shaft (5) and in turn move the governor lever (6) in the direction of "D" (to decrease the fuel supply). The engine will
idle in a condition in which the two forces are balanced with each other.
9Y1211018ENM0037US0
(1) Governor Spring
(2) Stop Spring
(3) Crank Gear
(4) Governor Weight
(5) Governor Shaft
(6) Governor Lever
(7) Speed Control Lever
(8) Fuel Limiter
(9) Idling Spring
(10) Control Rack
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