Farymann Diesel 15W Repair Manual page 62

The purpose of the governor is to maintain the
specified speed of the engine. Therefore, cen-
trifugal and resilient spring forces are used to
control the amount of fuel injected by the injec-
tion pump.
According to the application, there are several
types of governor available :
1. Fixed full speed governor
Only one speed is governed. For applica-
tions such as gernerating sets, pumps, ...
TEST RUN, ADJUSTMENTS
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9. Governor
1. Governor body
2. Governor spring, middle speed range in
case of variable speed governor
3. Spacer, instead of item 2, end speed gover-
nor
4. Governor pin
5. Spring bridge
6. Guide bush
7. Governor spring, max speed
8. Governor spring, idle speed
9. Cross slutted nut
2. Idle and full speed governor ( 2 stage )
Besides the full load speed the idling speed
is also governed. For applications with con-
stant speed operation and idle speed relief.
Such as compressors, freezer units, ...
3. All speed governor ( variable speed )
Governs the complete range of speed from
idle up to full speed. For applications such
as industrial engines, vehicles, propulsion, ...
10. Construction and function of governor
and control system
The governor consists mainly of two flywheights
and a set of springs which counteract the cen-
trifugal force exerted by the flywheights.
The governor is direct assembled to the crank-
shaft – governor speed synchron with the engine
speed. The rotation drives the expends the fly-
wheights => governor pin is pushed via lever
transmission till contacting the adjustable tappet
bolt of the control lever.
Through this lever the injection pump rack is
pushed towards idle / stop position. The control
lever pivots on the eccentric regulation shaft.
Due to the control lever pivoting on the eccentric
shaft the distance between tapped bolt and gov-
ernor pin increases when the acceleration lever
is moved towards full load position.