PLATE AS 1358658 - Caterpillar

Illustration 1 g02851416
Air inlet and exhaust system (1) Exhaust manifold (2) Inlet manifold and aftercooler (3) Engine cylinder (4) Air inlet (5) Turbocharger compressor wheel (6) Turbocharger turbine wheel (7) Exhaust outletClean inlet air from the air cleaner is pulled through air inlet (4) of the turbocharger by the turning of compressor wheel (5). The compressor wheel causes a compression of the air. The air then flows to the aftercooler, and then to inlet manifold (2) of the engine. When the inlet valves open, the air flows into engine cylinders (3). The air is mixed with the fuel for combustion. When the exhaust valves open, the exhaust gases go out of the engine cylinders and into exhaust manifold (1). From the exhaust manifold, the exhaust gases flow through the blades of turbine wheel (6) causing the turbine wheel and compressor wheel to turn. The exhaust gases then flow out of exhaust outlet (7) of the turbocharger.Aftercooler
Illustration 2 g00678359
Aftercooler (typical example) (1) Air inlet pipe (2) Aftercooler (3) Water inlet pipe (4) Water outlet pipeThe aftercooler (2) cools the air that comes from the turbocharger before the air goes into the inlet manifold. The aftercooler is located toward the rear of the engine between the cylinder heads. Coolant from the water pump flows through water inlet pipe (3) into the aftercooler. The water then flows through the aftercooler core assembly through a different water outlet pipe (4) into the rear of the cylinder block. Inlet air from the compressor side of the turbocharger flows into the aftercooler through air inlet pipe (1). The air passes through the core assembly and lowers the temperature of the air to approximately 93 °C (200 °F). The cooler air goes out of the bottom of the aftercooler and into the inlet manifold. Cooler air is denser air. Dense air will help the engine burn the fuel more efficiently. This denser air gives the engine more power.Turbocharger
Illustration 3 g00678403
Turbocharger (typical example) (1) Air inlet pipe (2) Turbocharger (3) Turbocharger support manifoldThe turbocharger (2) is mounted to the turbocharger support manifold (3). All of the exhaust gases go from the turbocharger support manifold through the turbocharger.
Illustration 4 g00678415
Turbocharger (typical example) (4) Air inlet (5) Compressor wheel (6) Turbine wheel (7) Exhaust outlet (8) Compressor housing (9) Oil inlet port (10) Thrust collar (11) Thrust bearing (12) Turbine housing (13) Spacer (14) Air outlet (15) Oil outlet port (16) Bearing (17) Lubrication passage (18) Bearing (19) Exhaust inletThe exhaust gases enter the turbocharger and the blades of the turbocharger turbine wheel (6) are turned. Because the turbocharger turbine wheel is connected by a shaft to the turbocharger compressor wheel (5), the turbine wheel and the compressor wheel turn at high speeds. The rotation of the compressor wheel pulls clean air through the compressor housing air inlet (4). The action of the compressor wheel blades causes a compression of the inlet air. This compression allows a larger amount of air to enter the engine. With more air in the engine, the