BUSHING 2185429 - Caterpillar

Illustration 1 g00451885
Air inlet and exhaust system schematic (1) Inlet manifold (2) Aftercooler core (3) Inlet air line (4) Exhaust outlet from turbocharger (5) Turbine side of turbocharger (6) Compressor side of turbocharger (7) Air cleanerThe engine 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
Exhaust manifoldNote: This summary assumes that the engine is developing boost.The turbocharger compressor wheel pulls inlet air through the air cleaner and into the air inlet. The air is compressed and heated to about 150°C (300°F) before the air is forced to the aftercooler. The air flows through aftercooler core (2) and the temperature of the compressed air lowers to about 43°C (110°F). The combustion efficiency increases because of the cooler inlet air. This helps to provide increased horsepower output. Aftercooler core (2) is a separate cooler core that is mounted in front of the engine radiator. The engine fan and the ram effect of the forward motion of the vehicle causes ambient air to move across both cores. This cools the turbocharged inlet air and the engine coolant.Air is forced from the aftercooler into inlet manifold (1). The airflow from the inlet port into the cylinders is controlled by inlet valves.
Illustration 2 g00615497
Air inlet and exhaust system (2) Aftercooler core (4) Exhaust outlet (5) Turbine side of turbocharger (6) Compressor side of turbocharger (8) Exhaust manifold (9) Exhaust valve (10) Inlet valve (11) Air inletEach cylinder has two inlet valves (10) and two exhaust valves (9) in the cylinder head. The inlet valves open when the piston moves toward the bottom center on the inlet stroke. When the inlet valves open, cooled compressed air from the inlet port within the inlet manifold is forced into the cylinder. The inlet valves close when the piston moves toward top center on the compression stroke. The air in the cylinder is compressed and the fuel is injected into the cylinder when the piston is near the top of the compression stroke. Combustion begins when the fuel mixes with the super heated air. The force of combustion pushes the piston toward the bottom center on the power stroke. The exhaust valves open and the exhaust gases are pushed through the exhaust port into exhaust manifold (8). After the piston moves toward top center on the exhaust stroke, the exhaust valves close and the cycle begins again.The hot exhaust gases from the exhaust manifold flow into the turbine side of turbocharger (5). The hot exhaust gases cause the turbocharger turbine wheel to turn. The turbine wheel is connected to the shaft that drives the compressor wheel. Exhaust gases from the turbocharger pass through exhaust outlet (4), through the catalytic converter into a muffler, and through an exhaust stack.Turbocharger
Illustration 3 g00291064
Turbocharger (typical example) (1) Pipe (2) Exhaust manifold (3) TurbochargerTurbocharger (3) is mounted to exhaust manifold