HARNESS AS-PANEL 4959718 - Caterpillar

Illustration 1 g03823329
(1) Inlet Valves
(2) Exhaust Valves
(3) Water Cooled Exhaust Manifold
(4) Water Inlet for the Aftercooler
(5) Water Outlet for the aftercooler
(6) Aftercooler
(7) Air Inlet
(8) Exhaust Outlet
(9) Compressor
(10) Turbine
(11) Air Cleaner The components of the air inlet and exhaust system control the quality of air and the amount of air that is available for combustion. The components of the air inlet and exhaust system are the following components:
Air cleaner
Turbocharger
Aftercooler
Cylinder head
Valves and valve system components
Piston and cylinder
Water Cooled Exhaust manifold Inlet air is pulled through the air cleaner (11) into air inlet (7) by turbocharger compressor wheel (9). The air is compressed and heated to about 200° C (392° F) before the air is forced to the aftercooler (6). As the air flows through the aftercooler, the temperature of the compressed air lowers to about 43 °C (110 °F). Cooling of the inlet air increases combustion efficiency. Increased combustion efficiency helps achieve the following benefits:
Lower fuel consumption
Increased horsepower outputFrom the aftercooler, air is forced into the inlet manifold. Air flow from the inlet chambers into the cylinders is controlled by inlet valves (1). There are two inlet valves and two exhaust valves (2) for each cylinder. The inlet valves open when the piston moves down on the intake stroke. When the inlet valves open, cooled compressed air from the inlet port is pulled into the cylinder. The inlet valves close and the piston begins to move up on the compression stroke. The air in the cylinder is compressed. When the piston is near the top of the compression stroke, fuel is injected into the cylinder. The fuel mixes with the air and combustion starts. During the power stroke, the combustion force pushes the piston downward. The exhaust valves open and the exhaust gases are pushed through the exhaust port into water-cooled exhaust manifold (3) as the piston rises on the exhaust stroke. After the exhaust stroke, the exhaust valves close and the cycle starts again. The complete cycle consists of four strokes:
Inlet
Compression
Power
ExhaustExhaust gases from water-cooled exhaust manifold (3) enter the turbine side of the turbocharger in order to turn turbocharger turbine wheel (10). The turbine wheel is connected to the shaft that drives the compressor wheel. Exhaust gases from the turbocharger pass through exhaust outlet (8), a muffler, and an exhaust stack.Turbocharger
Illustration 2 g03823382
Water-cooled turbocharger
(1) Air inlet
(2) Exhaust outlet
(3) Exhaust inlet
(4) Compressor housing
(5) Compressor wheel
(6) Bearing
(7) Oil Inlet port
(8) Bearing
(9) Water-cooled turbine housing
(10) Turbine wheel
(11) Oil outlet port All of the air that enters the engine passes through the turbocharger. All of the exhaust gases from the engine pass through the turbocharger.The exhaust gases enter water-cooled turbine housing (9) through exhaust inlet (3). The housing of the turbochargers turbine is water cooled. This prevents the heat of the exhaust gases from radiating into the environment that surrounds the engine. The exhaust gas pushes the blades of the turbine wheel (10). The turbine wheel is connected by a shaft to the compressor wheel (5).Air that passes through the air filters enters the compressor