Engine Operation - Perkins 1206E-E70TTA Operation And Maintenance Manual

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Operation Section

Engine Operation

Engine Operation
Engine Operation
Proper operation and maintenance are key factors in
obtaining the maximum life and economy 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.
The time that is needed for the engine to reach
normal operating temperature can be less than the
time taken for a walk-around inspection of the
engine.
The engine can be operated at the rated rpm after
the engine is started and after the engine reaches
operating temperature. The engine will reach normal
operating temperature sooner during a low engine
speed (rpm) and during a low-power demand. This
procedure is more effective than idling the engine at
no load. The engine should reach operating
temperature in a few minutes.
Avoid excess idling. Excessive idling causes carbon
buildup, engine slobber and soot loading of the
Diesel Particulate Filter (DPF). This is harmful to the
engine.
Gauge readings should be observed and the data
should be recorded frequently while the engine is
operating. Comparing the data over time will help to
determine normal readings for each gauge.
Comparing data over time will also help detect
abnormal operating developments. Significant
changes in the readings should be investigated.
Reduction of Particulate Emissions
The Diesel Particulate Filter (DPF) and the
Aftertreatment Regeneration Device (ARD) work
together in order to reduce particulate emissions. The
DPF collects the soot and any ash that is produced
by the combustion in the engine. During
regeneration, the soot is converted into a gas which
is released into the atmosphere. The Ash remains in
the DPF until the ash is cleaned out of the DPF.
The temperature of the DPF must be above a
particular value in order for regeneration to occur.
The exhaust gas provides heat for the regeneration
process. There are two types of regeneration:
Passive Regeneration – Is a chemical reaction
within the system and the engine provides sufficient
exhaust gas temperature for regeneration.
Active Regeneration – The engines duty cycle does
not provide sufficient exhaust temperature for
passive regeneration. The ARD operates in order to
raise the temperature of the exhaust gas. When the
regeneration process is complete, the ARD turns off.
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The operator will receive information on the status of
the ARD from dash lamps and the driver will be able
to request a regeneration by using a switch. Refer to
this Operation and Maintenance Manual, "Monitoring
System" for more information.
Engine Operation and Active
Regeneration
Your ARD may perform an active regeneration while
your engine is at idle. During this active regeneration
of the DPF, the engine may operate at idle for periods
longer than 5 minutes.
Diesel Particulate Filter
Regeneration
The temperature of the exhaust gas and the tem-
perature of the exhaust system components can
reach up to 650 °C (1202 °F) during regeneration.
An unexpected failure of the engine or an unex-
pected failure of the aftertreatment system may
increase temperature at the diesel particulate fil-
ter to as high as 900 ° C (1652 ° F) gas tempera-
ture. This may result in fire, burn, or explosion
hazards, which may result in personal injury or
death. Do not expose flammable material or ex-
plosive atmospheres to exhaust gas or to ex-
haust system components during regeneration.
Regeneration
Regeneration is the removal of soot from the Diesel
Particulate Filter (DPF). The Aftertreatment
Regeneration Device (ARD) is used to regenerate
the DPF. The DPF traps both soot and ash. The ash
is removed through a manual cleaning process.
Refer to Operation and Maintenance Manual, "Diesel
Particulate Filter - Clean" for more information on the
service of the DPF.
Types of Regeneration
Passive Regeneration – Is a chemical reaction
within the system and the engine will create enough
heat in order to regenerate the DPF.
Active Regeneration – The engine does not create
enough heat in order to regenerate the DPF. The
ARD must be used to create the heat necessary to
regenerate the DPF.
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