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GOVERNOR SYSTEM
General
The governor functions to keep the engine running at a constant speed
by balancing the centrifugal force acting on the governor weights and
the
governor
spring
tension.
As
the
engine
speed
increases,
the
governor weights (8)
open to move the sliding shaft (6)
forward and
the
control
rack
of
the
injection
pump
is
moved
by
the
governor
lever (5)
in the direction of reducing the fuel injection rate.
At
the
same
time
the
governor
spring (3)
is
pulled
by
the
governor
lever (5)
until
the
spring
force
is
balanced with
the centrifugal
force of the governor weights,
thus maintaining the constant engine
speed.
If
the
speed
control
lever (1)
is
pulled
toward
HIGH
SPEED,
the
governor spr ing (3)
is pulled and the governor control rack is moved
by
the governor
lever (5)
toward
increasing fuel
injection rate to
increase the engine speed which is kept constant when the centrifugal
force
of
the governor
weight
is
balanced wi th
the governor
spr ing
force.
1
3
4
5
6
1. Speed control lever
2. Camshaft
3. Governor spring
4. Cam gear
5. Governor lever
6. Sliding shaft
7. Idle gear
9
10
8. Governor weight breather
9. Injection pump
10. Gear case
11. Air breather pump
12. Crankshaft gear
13. Crankshaft
77
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