Perkins 2206-E13 Operation And Maintenance Manual page 16

16
Product Information Section
Model Views
Very high injection pressures are produced by
electronically controlled, mechanically actuated unit
injectors. The injectors combine the pumping and the
electronic fuel metering (duration and timing) during
injection. The unit injectors accurately control smoke
limiting, white smoke, and engine acceleration rates.
There is one unit injector per cylinder. Individual unit
injectors meter the fuel. The individual unit injectors
also pump the fuel. The metering and the pumping is
done under high pressure. High injection pressures
help to reduce fuel consumption and emissions.
The use of this type of unit injector provides total
electronic control of injection timing. The injection
timing varies with engine operating conditions. The
engine performance is optimized in the following
areas:
•
Starting
•
Emissions
•
Noise
•
Fuel consumption
The timing advance is achieved through precise
control of the injector firing. Engine speed is
controlled by adjusting the firing duration. The
information is provided to the Electronic Control
Module (ECM) by the crankshaft position sensor and
the camshaft position sensor. The information is for
detection of cylinder position and engine speed.
The engines have built-in diagnostics in order to
ensure that all of the components are functioning
and operating properly. In the event of a system
component deviation from the programmed limits,
the operator will be alerted to the condition by a
DIAGNOSTIC lamp that is mounted on the control
panel. An electronic service tool that is provided by
Perkins may be used to read the diagnostic codes.
These codes are logged and stored in the ECM.
Refer to Operation and Maintenance Manual, "Engine
Diagnostics" for additional information.
The cooling system consists of the following items:
a centrifugal pump that is driven by a gear, water
temperature regulator, an oil cooler, and a radiator
that incorporates a shunt system.
The engine lubricating oil is supplied by a gear
type pump. The engine lubricating oil is cooled and
filtered. Bypass valves provide unrestricted flow
of lubrication oil to the engine parts when the oil
viscosity is high or if either the oil cooler or the oil
filter elements (paper cartridge) become plugged.
Engine efficiency, efficiency of emission controls, and
engine performance depend on adherence to proper
operation and maintenance recommendations. This
includes the use of recommended fuels, coolants
and lubrication oils.
Aftermarket Products and Perkins
Engines
When auxiliary devices, accessories, or consumables
(filters, additives, catalysts, etc) which are made by
other manufacturers are used on Perkins products,
the Perkins warranty is not affected simply because
of such use.
However, failures that result from the installation
or use of other manufacturers' devices,
accessories, or consumables are NOT Perkins
defects. Therefore, the defects are NOT covered
under the Perkins warranty.
SEBU8337