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Turbochargers

Turbochargers . http://www.youtube.com/watch?v=vGhlgphrBxA&feature=related. Turbocharger. Is an engine component that improves engine performance through the introduction of additional air into the intake system

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Turbochargers

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  1. Turbochargers http://www.youtube.com/watch?v=vGhlgphrBxA&feature=related

  2. Turbocharger • Is an engine component that improves engine performance through the introduction of additional air into the intake system • Turbochargers utilize volume, intensity, and speed of existing exhaust gases from a running engine to drive a compressor. • http://www.thesaabsite.com/About%20Saab%20turbos.htm

  3. Diesel Engine Turbocharging • Uses a compressor to raise the pressure and the density of the air entering an engine. • An exhaust-driven turbine drives a small compressor on the same shaft to pressurize the intake air. This increases the total mass of air introduced per cycle.

  4. The increased air mass • Increases the power output. • Improves fuel economy. • Can reduce overall emissions.

  5. Turbochargers • Must operate at high temperatures and high rotational speeds for maximum benefit. • Turbo Lag occurs!! • Period of time between when the operator demands more power and the time when the intake air reaches maximum pressure for the desired power.

  6. Parts of a Turbocharger • Turbine • Turbine housing • Central rotating shaft • Turbocharger compressor wheel • Turbocharger compressor housing • Wastegate

  7. Turbine • Provides a turbocharger with the needed rotational force to compress ambient air to a positive pressure.

  8. Turbine Housing • Component that channels exhaust gases existing the engine to the turbine for maximum rotational effect.

  9. Central Rotating Shaft • Supports the two main parts of a turbocharger. • The turbine is connected to and rotates with the central rotating shaft.

  10. Turbocharger Compressor Wheel • Component that takes in ambient air and pressurizes it to a value above 14.7 psi. • When the turbine rotates, so does the turbocharger compressor wheel.

  11. Turbocharger Compressor Housing • Used to compress ambient air and direct it into an intake stream of an engine above ambient pressure.

  12. Questions • Define Turbo Boost. • Is there a limit on how much turbo boost an engine can safely & efficiently utilize? • Define the concept of Knocking associated with too much Boost pressure. • Define Turbo Lag. • How does Internal & External Wastegates work?

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