Turbocharger — Description (Peugeot 305)

1. The turbocharger is installed on XUD7T and XUD9T engines. It increases the efficiency of the engine by increasing the pressure in the intake manifold so that it is above atmospheric pressure. Instead of being sucked into the cylinders, air is forced into them.

2. The turbocharger receives the energy it needs to run from the exhaust gases, which, when passing through a specially shaped chamber, (turbine chamber) rotate the turbine wheel. The turbine wheel rests on a shaft, at the end of which there is another paddle wheel, known as the compressor wheel. The compressor wheel rotates in its own chamber and compresses the intake air on its way to the intake manifold.

3. Boost pressure (intake manifold pressure) limited by a bypass valve that diverts exhaust gases away from the turbine wheel in response to a command given by a pressure-sensitive actuator (see photo).

4. The turbine shaft is lubricated under pressure through a tube extending from the lubrication line. shaft practically "floats" on an oil pad. Naelo returns to the pan through the drain tube.