Engine Operation; Engaging The Driven Equipment - Perkins 1206F-E70TA Operation And Maintenance Manual

66

Engine Operation

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). These issues are
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.
Engine Operation and the
Aftertreatment System
The exhaust gases and hydrocarbon particles from
the engine first pass through Diesel Oxidation
Catalyst (DOC). Some of the gasses and matter are
oxidized as they pass through the DOC. The gasses
then pass through the Diesel Particulate Filter (DPF).
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 and the
ash remains in the DPF. The gasses finally pass
through the Selective Catalytic Reduction (SCR).
Before the gasses pass through the SCR, Diesel
Exhaust Fluid (DEF) is injected into the gas stream.
The DEF is stored and controlled by the Pump
Electronic Tank Unit (PETU). The mixtures of DEF
and the exhaust gas pass through the SCR reducing
the NOx in the exhaust emissions.
The DPF may require the exhaust gas temperature to
rise in order to remove the soot. If necessary, the
back pressure valve operates in order to create the
rise in temperature. In some applications, the
i04907268
operation of the back pressure valve will make the
engine tone different.
The engine software will control the amount of DEF
that will be required in order to keep the exhaust
emission compliant.
This design of DPF will not require a service
maintenance interval. The DPF can be expected to
function properly for the useful life of the engine
(emissions durability period), as defined by
regulation, subject to prescribed maintenance
requirements being followed.
Engaging the Driven
Equipment
1. Operate the engine at one-half of the rated rpm,
when possible.
2. Engage the driven equipment without a load on the
equipment, when possible.
Interrupted starts put excessive stress on the drive
train. Interrupted starts also waste fuel. To get the
driven equipment in motion, engage the clutch
smoothly with no load on the equipment. This
method should produce a start that is smooth and
easy. The engine rpm should not increase and the
clutch should not slip.
3. Ensure that the ranges of the gauges are normal
when the engine is operating at one-half of the
rated rpm. Ensure that all gauges operate properly.
4. Increase the engine rpm to the rated rpm. Always
increase the engine rpm to the rated rpm before
the load is applied.
5. Apply the load. Begin operating the engine at low
load. Check the gauges and equipment for proper
operation. After normal oil pressure is reached and
the temperature gauge begins to move, the engine
may be operated at full load. Check the gauges
and equipment frequently when the engine is
operated under load.
Extended operation at low idle or at reduced load
may cause increased oil consumption and carbon
buildup in the cylinders. This carbon buildup
results in a loss of power and/or poor performance.
SEBU8732
i01646335