Engine Operation
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Engine Operation
Correct operation and maintenance are key factors in
obtaining the maximum life of the engine. If the
directions in the Operation and Maintenance Manual
are followed, costs can be minimized and engine
service life can be maximized.
Low load engine operation is defined as less than
42kWe/cyl. The operation of the engine at no load or
low load should be reduced to a minimum period.
Any weekly or monthly operation at no load or low
load should be kept down to minutes, or until the
battery charging rate returns to normal.
After failed start / stop events, the exhaust system
should be inspected for unburned fuel and drained
accordingly. The engine should be operated on full
load.
Every year or after 20 hours of low load running
(whichever is sooner) engines or generator sets
should be operated at full load for a minimum of one
hour. The one hour operation will help to burn off the
build-up of carbon in the engine and exhaust system.
The use of a “test” load may be required. The load
should be increased gradually, from zero full load
over the first hour. Start the engine and over 5
minutes, increase the load to 25 percent. Between 5
and 15 minutes, increase the load to 50 percent.
Then, between 15 and 30 minutes, increase the load
to 75 percent. Finally, between 30 and 45 minutes,
increase the load to the full rated load for the engine.
On engines with low load profiles, Perkins
recommends that a regular oil sample analysis is
carried out and if required the oil and oil filters are
changed.
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Fuel Conservation Practices
The efficiency of the engine can affect the fuel
economy. Perkins design and technology in
manufacturing provides maximum fuel efficiency in
all applications. Follow the recommended procedures
in order to attain optimum performance for the life of
the engine.
• Avoid spilling fuel. Fuel expands when the fuel is
warmed up. The fuel may overflow from the fuel
tank. Inspect fuel lines for leaks. Repair the fuel
lines, as needed.
• Be aware of the properties of the different fuels.
Use only the recommended fuels.
• Avoid unnecessary running at a low load. If the
engine is not under load, the engine should be
shut down.
• Observe the air cleaner service indicator
frequently. The air cleaner elements should be
replaced when the air cleaner elements are dirty.
• Maintain the electrical systems. One damaged
battery cell will overwork the alternator. This will
consume excess power and excess fuel.
• Ensure that the drive belts are correctly adjusted.
The drive belts should be in good condition.
• Ensure that all of the connections of the hoses are
tight. The connections should not leak.
• Ensure that the driven equipment is in good
working order.
• Cold engines consume excess fuel. Utilize heat
from the jacket water system and the exhaust
system, when possible. Keep cooling system
components clean and keep cooling system
components in good repair. Never operate the
engine without water temperature regulators. All of
these items will help maintain operating
temperatures.
46 M0163009
Operation Section
Engine Operation
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