ADAPTER-COOLANT TEMPERATURE SENSOR TO 8T3285 - Caterpillar

The air inlet and the exhaust system includes the following components:
air cleaner
turbocharger
aftercooler
inlet manifold (passages inside the cylinder block)
cylinder head
valves
valve system components
exhaust manifold
Illustration 1 g00327243
Air inlet and exhaust system
(1) Exhaust manifold. (2) Inlet manifold and aftercooler. (3) Engine cylinder. (4) Turbocharger compressor wheel. (5) Turbocharger turbine wheel. (6) Air inlet. (7) Exhaust outlet.
Clean 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 (if equipped), 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). This causes the turbine wheel and compressor wheel to turn. The exhaust gases then flow out of exhaust outlet (7) of the turbocharger.
Illustration 2 g01037061
Air inlet and exhaust system
(2) Inlet manifold and aftercooler. (4) Air inlet. (7) Exhaust outlet. (8) Turbocharger.
Illustration 3 g00332864
Airflow schematic (typical example)
(1) Exhaust manifold. (2) Inlet manifold and aftercooler. (4) Air inlet. (7) Exhaust outlet. (8) Turbochargers.
Aftercooler
The C32 has an aftercooler (2). The aftercooler is installed above the inlet manifold.
Illustration 4 g00542273
Air inlet system (typical example)
(1) Turbocharger. (2) Aftercooler. (3) Elbow on the front bonnet of the oil cooler.
The inlet air from the compressor side of the turbocharger flows into the aftercooler. The air passes through the core assembly which lowers the temperature as much as 38°C to 93°C (100°F to 200°F). The cooler air flows out of the bottom of the aftercooler and into the air chamber. The cooler air then flows through the inlet ports (passages) in the cylinder heads. Cooler air is denser air. Dense air will help the engine burn the fuel more efficiently. This gives the engine more power.Turbocharger
Illustration 5 g01037341
Twin turbochargers (typical example)
(1) Air outlet (one on each side). (2) Exhaust manifolds (one on each side). (3) Exhaust outlet (one on each side). (4) Oil drain line (one on each side).
Two turbochargers are mounted on the rear of the engine. All of the exhaust gases from the left exhaust manifold goes through the left turbocharger, and the right turbocharger uses the exhaust from the right exhaust manifold.
Illustration 6 g00332960
Turbocharger (typical example)
(4) Air inlet. (5) Compressor wheel. (6) Turbine wheel. (7) Exhaust outlet. (8) Compressor housing. (9) Thrust bearing. (10) Sleeve. (11) Lubrication inlet port. (12) Turbine housing. (13) Sleeve. (14) Sleeve. (15) Oil deflector. (16) Bearing. (17) Oil outlet port. (18) Bearing. (19) Exhaust inlet. (20) Air outlet.
The exhaust gases go into the turbine housing (12) and the exhaust gases push the blades of the turbine wheel (6). This causes the turbine wheel and the compressor wheel to turn at a rate up to 70,000 rpm.Clean air from the air cleaners is pulled through the compressor housing air