Intake and exhaust systems Design and function Starting heater
TWD-engines
The pre-heating and post-heating times are a factor of engine temperature. The purpose of the starting heater is to warm up the air in the intake manifold when the engine is started. The heated air makes for easier starting and also reduces the generation of exhaust smoke during cold starts.
TAD-engines
Turbocharger The turbocharger is powered by the exhaust gases which pass through the turbine housing to reach the exhaust system. The passage of the exhaust gases causes the turbine wheel to spin. On the same shaft as the turbine wheel is a compressor wheel. The compressor wheel spins in a compressor housing which is connected between the air cleaner and the engine's inlet manifold. As the compressor wheel rotates, air is sucked in from the air cleaner. The air is compressed by the compressor wheel and is forced into the cylinders of the engine.
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