Aurora AGI6500DE, Руководство по эксплуатации

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required for automatic engine starting and stopping. Removing the plunger inside will
defeat it and let you continue using your engine in the event of this component failure. If
this component fails immediate replacement is recommended in order for low oil
pressure auto safety shut down the engine and prevent further damage.
Engine Air Intake and Exhaust System
The Engine Air Intake and Exhaust System provides filtered air to the diesel engine and
an outlet for exhaust gas produced by air/diesel fuel combustion. The system consists
of an air intake filter, air intake manifold, exhaust manifold, and muffler system.
The air intake cleaner features a foam pre-filter and a disposable paper filter element.
Air is drawn through the pre-filter and the filter element. Airborne dirt is trapped in the
pre-filter and air intake filter element. Filtered air passes through the filter, air intake
manifold, and open intake valve into the engine combustion chamber where it mixes
with pressurized diesel fuel and is combusted.
Immediately following combustion, hot gases are forced out of the combustion chamber
(through the open exhaust valve), and into the exhaust manifold. The exhaust manifold
passes the gases into the muffler which deadens the sound created by the combustion
process. The gases then pass through diesel oxidation catalysts and the muffler system.
A muffler system can get very hot and personnel may occur if users inadvertently touch
the muffler while the diesel engine is running or before it has cooled down.
Engine Speed Control
Diesel engine speed is maintained by the speed control system which includes the
mechanical governor, governor lever, RUN lever, and STOP lever. The system is
designed to maintain engine speed under load at a constant rate of between 3570 and
3630 rpm (no load speed of 3750 rpm).
The governor is the flyweight-type, with the weights mounted on a gear driven by the
engine camshaft gear. The force of the flyweights is transferred through a thrust sleeve
and collar to the governor lever which is balanced against the tension of the governor
spring. The spring is stretched between the governor lever and the engine RUN lever.
When the engine speed drops below the governed speed, the resulting decrease in
governor flyweight / camshaft rotation places tension on the governor spring. The
tension repositions the fuel injection pump rack and increases the stroke of the plunger
in the fuel injection pump allowing more fuel to flow to the pump delivery valve. The
increase in fuel flow causes the diesel engine to speed up. As the diesel engine
recovers to the governed speed, the governor flyweight / camshaft rotation stabilizes
and the tension on the governor spring relaxes. This changes the position of the fuel
injection pump rack and shortens the stroke of the plunger allowing less fuel to flow to
the fuel injectors maintaining the engine speed at 3600.
AGI6500DE & AGI6500SDE Operator / Owners Manual Version 11.4.1
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