BOLT 2173753 - Caterpillar

The Caterpillar C-15 Petroleum Engine provides the following features:
Four cycle
Direct fuel injection
Mechanically actuated electronic unit injection
Turbocharged
Air-to-air aftercooledElectronic Engine Features
The Caterpillar C-15 Petroleum Engine is designed for electronic controls. The integral on board computer controls the operation of the engine. Current 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 and auxiliary monitoring
Engine speed governing
Automatic air/fuel ratio control
Torque rise shaping
Injection timing control
System diagnosticsAn electronic governor controls the output of the unit injection pump. This maintains the desired engine speed.Electronically controlled, mechanically actuated unit injectors combine the pumping, the electronic fuel metering (duration and timing) and injecting elements. This produces very high injection pressures.Each cylinder has one individual unit injection pump. Each unit injection pump meters the fuel. The unit injection pump also pumps the fuel under very high pressure to each cylinder. High injection pressures will help to reduce fuel consumption. The high injection pressures also help to reduce emissions. The use of this type of unit fuel injector provides total electronic control of injection timing. The injection timing varies with engine operating conditions. This optimizes the engine's performance for the following items: starting, emissions, noise and fuel consumption.Engine Cooling and Lubrication
The cooling system consists of the following components:
Centrifugal pump that is driven by gears
Water temperature regulators which regulate the engine coolant temperature
Oil coolerThe engine lubricating oil, that is supplied by a gear type 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
Note: The front end of the engine is opposite the flywheel end of the engine. The left and the right sides of the engine are determined from the flywheel end. The number 1 cylinder is the front cylinder. C-15 Petroleum Engine
Illustration 1 g00284836
Cylinder and valve locations (A) Inlet valves (B) Exhaust valves
Table 1
C-15 Petroleum Engine Specifications    
Cylinders and Arrangement     6 cylinder in-line block    
Bore    
137 mm (5.4 inch)    
Stroke    
165 mm (6.5 inch)    
Compression Ratio     16:25:1    
Aspiration     T (1), ATAAC (2)    
Displacement    
14.6 L (893 in3)    
Firing Order     1-5-3-6-2-4    
Rotation (flywheel end)     Counterclockwise    
( 1 ) Turbocharged
( 2 ) Air-to-air aftercooled