CORE ASSEM. 3N4451 - Caterpillar

This Generator Set consists of an engine, generator, a control system, and a gearbox.Generator Set
The purpose of the Generator Set is to generate electrical power.Gearbox
To increase rotational speed from the engine at 1500 RPM to the required generator speed of 1800 RPM.Engine Description
Fuel System (Air/Fuel Ratio Control)
The fuel system includes these components:
Fuel metering valve
Engine control module (ECM)
Inlet Manifold Pressure Sensor
Knock sensor
Load Signal
Inlet manifold temperature sensorThe fuel metering valve controls the flow of fuel to the engine. The ECM determines the requirement for the mixture of air and fuel. The ECM sends a signal to the fuel metering valve. The fuel metering valve controls the volume of the gas flow to the engine.The fuel flows through the fuel metering valve into the air inlet elbow. The mixture of air and fuel flows through the turbocharger compressor. The mixture enters the aftercooler through a throttle which is electronically controlled. The air/fuel mixture is cooled in the aftercooler. The mixture then enters the inlet manifold.The ECM sends an electronic throttle signal to the electronic actuator. The throttle is controlled by the actuator.Ignition System
The engine is equipped with an electronic ignition system. The system provides dependable firing and low maintenance. The system provides precise control of the spark and the ignition timing for each cylinder.The system also provides diagnostic capability that enhances troubleshooting.The engines are equipped with protection from detonation. A detonation sensor is located between every two cylinders. The ignition timing is delayed for a cylinder when excessive detonation is sensed in that cylinder. If the maximum delayed position is attained and detonation continues to occur, the ECM shuts down the engine.The engines are equipped with flame arresters. The flame arresters are at the entrance of each inlet port. If the engine backfires, the flame arresters prevent the fire from entering the intake manifold.Lubrication System
The engine lubrication oil is circulated by a gear-driven pump. The oil is cooled and filtered. A bypass valve provides unrestricted flow of lubrication oil to the engine parts if the oil filter elements become plugged.The prelube pump, if equipped, is controlled by the engine Electronic Control Module (ECM). Settings can be modified in ET. The gearbox prelube pump controls are configured to activate the pump daily by utilizing Programmable Cycle Timer 1. The process ensures that the bearings are lubricated. The settings can be modified in ET to adjust time of daily lube cycle.Gearbox Lubrication
The gearbox oil is circulated by a shaft driven oil pump. The oil is cooled and filtered. A bypass valve provides unrestricted flow of lubrication oil to the gearbox parts if the oil filter element becomes clogged.The gearbox prelube pump is controlled by the EMCP 4. The gearbox prelube pump controls are configured to activate the pump daily by utilizing "Programmable Cycle Timer 1" of the EMCP 4 to ensure that the bearings are lubricated. The settings can be modified in ET to adjust the time of the daily lubrication cycle.Cooling System
The cooling system uses a water pump. The cooling system has