Engine Operation
i04653132
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.
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). Excess idling can be
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.
System Check
During normal engine operation the Electronic
Control Module (ECM) will elevate the fuel pressure
to the injectors. This check will be at scheduled
intervals of approximately 100 hours depending on
the duty cycle of the engine. The check will be carried
out automatically without the need of any input from
the operator.
During the time of elevated fuel pressure, the
operator may notice a change in the tone of the
engine. The ECM will operate the check at low idle for
approximately 5 minutes.
i04690175
Diesel Particulate Filter
Regeneration
Regeneration
Regeneration is the removal of soot from the Diesel
Particulate Filter (DPF). There are two different types
of DPF that can be installed The through flow DPF
and the wall flow DPF. Engines with a power output of
56kW and above will have the wall flow DPF installed.
Engines with a power output below 56kW have the
option to use both types of DPF.
In table 4 titled Indicator Operation the operator will
find information on the regeneration indicators. The
table informs the operator why an indicator is
illuminated and what action should be taken.
Through Flow DPF
The through flow DPF uses passive regeneration in
order to remove the soot from the DPF. Passive
regeneration is a chemical reaction within the system.
Normal operation of the engine creates enough heat
for a chemical reaction in order to regenerate the
DPF. The regeneration occurs automatically during
normal engine operation.
This system uses an amount of active regeneration in
order to ensure that soot cannot exit the DPF. The
through flow DPF will not require manual cleaning.
For a typical view of the through flow DPF, refer to
this Operation and Maintenance Manual, “Sensors
and Electrical Components (Aftertreatment)”
Wall Flow DPF
The wall flow DPF uses passive regeneration and
active regeneration in order to remove the soot from
the DPF. The ash is trapped within the DPF and must
be removed by a manual cleaning process. Refer to
Operation and Maintenance Manual, “Diesel
Particulate Filter- Clean”.
For a typical view of the wall flow DPF, refer to this
Operation and Maintenance Manual, “Sensors and
Electrical Components (Aftertreatment)”
Regeneration Indicators
Five indicators can be affected by the DPF
regeneration. these indicators are, Regeneration
Active, DPF, Disable Regeneration, Amber, or Yellow
Warning Indicator and Red Stop Indicator.
56 SEBU8726
Engine Operation
Engine Operation
To Next Page
Loading...
