Design Description
1. All 2.0L engines are equipped with a turbocharger. It increases engine efficiency by raising the pressure in the intake manifold above atmospheric pressure. Instead of simply being sucked into the cylinders, air is forced here.
2. Energy for the operation of the turbocharger is provided by the exhaust gases. The gases pass through the specially shaped turbine housing and in doing so rapidly rotate the turbine wheel. The turbine impeller is mounted on a shaft, at the other end of which there is a second impeller, called the compressor wheel. The compressor wheel rotates in its own housing and compresses the intake air on its way to the intake manifold.
3. Boost pressure (intake manifold pressure) is limited by the turbine bypass valve, which, in response to commands from a pressure-sensitive actuator, diverts exhaust gases away from the turbine wheel.
4. The turbocharger shaft is pressurized with its own oil supply line. Shaft «floats» on oil «pillow». The oil is returned to the sump through the drain pipe.
Precautionary measures
5. The turbocharger operates at extremely high speed and temperature. To avoid premature turbocharger failure or personal injury, certain precautions must be observed.
6. Do not allow the turbocharger to operate when any of its elements are open or any of its hoses are removed. Foreign objects falling on the rotating blades can cause serious damage to the unit and personal injury (at «departure» these items).
7. Do not rev the engine immediately after starting, especially if it is cold. Wait a few seconds for the oil to fill all lines and channels.
8. Be sure to return the engine speed to idle before turning off the engine. Do not open the throttle abruptly and then shut off the engine, as this will leave the spinning turbocharger without lubrication.
9. Before turning off the engine after running at high speeds, let it run for several minutes at idle.
10. Follow the recommended oil and filter change intervals and use an approved brand of oil. Neglecting to change the oil or using poor quality oil can cause carbon deposits on the turbocharger shaft and subsequent failure.