Perkins 1204EA-E44TA Operation And Maintenance Manual page 28

28
Product Information Section
Product Description
(Table 1, contd)
(1) The operating rpm depends on the engine rating, the applica-
tion, and the configuration of the throttle.
Electronic Engine Features
The engine operating conditions are monitored. The
Electronic Control Module (ECM) controls the
response of the engine to these conditions and to the
demands of the operator. These conditions and
operator demands determine the precise control of
fuel injection by the ECM. The electronic engine
control system provides the following features:
• Engine monitoring
• Engine speed governing
• Control of the injection pressure
• Cold start strategy
• Automatic air/fuel ratio control
• Torque rise shaping
• Injection timing control
• System diagnostics
• Low temperature regeneration
For more information on electronic engine features,
refer to the Operation and Maintenance Manual,
"Features and Controls" topic (Operation Section).
Engine Diagnostics
The engine has built-in diagnostics to ensure that the
engine systems are functioning correctly. The
operator will be alerted to the condition by a "Stop or
Warning" lamp. Under certain conditions, the engine
horsepower and the vehicle speed may be limited.
The electronic service tool may be used to display
the diagnostic codes.
There are three types of diagnostic codes: active,
logged, and event.
Most of the diagnostic codes are logged and stored in
the ECM. For additional information, refer to the
Operation and Maintenance Manual, "Engine
Diagnostics" topic (Operation Section).
The ECM provides an electronic governor that
controls the injector output to maintain the desired
engine rpm.
Engine Cooling and Lubrication
The cooling system and lubrication system consists
of the following components:
• Gear-driven centrifugal water pump
• Water temperature regulator which regulates the
engine coolant temperature
• Gear-driven rotor type oil pump
• Oil cooler
The engine lubricating oil is supplied by a rotor type
oil pump. The engine lubricating oil is cooled and the
engine lubricating oil is filtered. The bypass valve can
provide unrestricted flow of lubrication oil to the
engine if the oil filter element should become
plugged.
Engine efficiency, efficiency of emission controls, and
engine performance depend on adherence to proper
operation and maintenance recommendations.
Engine performance and efficiency also depend on
the use of recommended fuels, lubrication oils, and
coolants. Refer to this Operation and Maintenance
Manual, "Maintenance Interval Schedule" for more
information on maintenance items.
Aftertreatment System
The aftertreatment system is approved for use by
Perkins. To be emission-compliant, only the
approved Perkins aftertreatment system or approved
components must be used on a Perkins engine.
Clean Emission Module (CEM)
The function of the CEM is to ensure that the engine
exhaust meets the required emissions regulation for
the country of operation.
The Clean Emissions Module (CEM) is constructed
of two main items, the Diesel Oxidation Catalyst
(DOC), and the Diesel Particulate Filter (DPF).
The engine is connected by a flexible pipe to the
CEM.
Combined DOC and DPF, where the exhaust gases
pass through the DOC and then enters the DPF
where the particulate matter is filtered out.
Service Life
Engine efficiency and maximum utilization of engine
performance depend on the adherence to proper
operation and maintenance recommendations. In
addition, use recommended fuels, coolants, and
lubricants. Use the Operation and Maintenance
Manual as a guide for required engine maintenance.
Expected engine life is generally predicted by the
average power that is demanded. The average
power that is demanded is based on fuel
consumption of the engine over a period of time.
Reduced hours of operation at full throttle and/or
operating at reduced throttle settings result in a lower
average power demand. Reduced hours of operation
will increase the length of operating time before an
engine overhaul is required.
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