CAP GP-TRACK IDLER 6I9890 - Caterpillar

TYPE="LEVEL" DEPTH="1" @@@-->Engine
The Cat C18 Marine Generator Set provides the following features:
Four-cycle
Direct fuel injection
Electronic unit injection
Turbocharged
Keel cooling
Separate circuit aftercooler (SCAC)
Jacket water cooledThe electronic engine control system provides the following features:
Engine monitoring
Electronic governing
Automatic air/fuel ratio control
Torque rise shaping
Injection timing control
System diagnosticsElectronic unit injectors combine the metering of fuel (duration and timing) and the injection of fuel. Electronic unit injectors produce high injection pressures.The Electronic Control Module (ECM) controls the amount of fuel that is injected by varying the signals to the electronic unit injectors. High injection pressures help to reduce fuel consumption and emissions. The use of this type of electronic unit injector helps to provide precise control of injection timing. The injection timing varies with engine operating conditions thus optimizing performance for starting, emissions, noise, and fuel consumption.The timing advance is achieved through the precise control of the firing of the electronic unit injector. Engine rpm is controlled by adjusting the firing duration. A speed/timing sensor provides information to the ECM for detection of cylinder position and engine rpm.The engine has built-in diagnostics that are used in order to ensure that all of the components function properly.The cooling system consists of the following components:
Gear-driven centrifugal pump
One water temperature regulator which regulates the engine coolant temperature
Oil cooler
Separate circuit aftercooler (SCAC)
Jacket water cooledThe engine lubricating oil, that is supplied by a gear pump, is cooled. The engine lubricating oil is also filtered. Bypass valves provide unrestricted flow of lubrication oil to the engine components during the following conditions:
High oil viscosity
Plugged oil cooler or plugged oil filter elements (paper cartridge)Engine Specifications
Illustration 1 g00904617
Cylinder and valve locations
(A) Exhaust valve
(B) Inlet valve
Table 1
C18 Marine Generator Set Specifications
Cylinders and Arrangement 6 In-Line
Bore 145 mm (5.7 inch)
Stroke 183 mm (7.2 inch)
Compression Ratio 16.5:1
Aspiration Turbocharged Aftercooled
Displacement 18 L (1098 cubic inch)
Firing Order 1-5-3-6-2-4
Rotation (viewed from flywheel) Counterclockwise Description of the Generator
These brushless generators are used with the following loads: mixed loads of motors and lights, SCR-controlled equipment, computer centers, installations of communications and petroleum drilling applications. The elimination of the brushes in the field circuit reduces maintenance. The elimination of the brushes in the field circuit increases reliability. The elimination of brushes provides a higher degree of protection in potentially hazardous atmospheres.The generator set packages can be utilized for prime power generation or standby power generation. The generator set packages can be used in land-based applications or marine applications.The generators have four poles. The generators have six lead configurations. The generators can produce electrical power in either 50 Hz or 60 Hz applications.