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How Turbochargers Work ?

by Karim Nice http://s.hswstatic.com/gif/turbo-getty-2.jpg

Image Gallery: Turbochargers The turbocharger system of the Mitsubishi Lancer Evolution IX. See more turbocharger pictures.
YOSHIKAZU TSUNO/AFP/Getty Images

When people talk about race cars or high-performance sports cars, the topic of turbochargers usually comes up. Turbochargers also appear on large diesel engines. A turbo can significantly boost an engine's horsepower without significantly increasing its weight, which is the huge benefit that makes turbos so popular!
In this article, we'll learn how a turbocharger increases the power output of an engine while surviving extreme operating conditions. We'll also learn how wastegates, ceramic turbine blades and ball bearings help turbochargers do their job even better. Turbochargers are a type of forced induction system. They compress the air flowing into the engine (see How Car Engines Work for a description of airflow in a normal engine). The advantage of compressing the air is that it lets the engine squeeze more air into a cylinder, and more air means that more fuel can be added. Therefore, you get more power from each explosion in each cylinder. A turbocharged engine produces more power overall than the same engine without the charging. This can significantly improve the power-to-weight ratio for the engine (see How Horsepower Works for details).
by Karim Nice Auto | Engine Performance
Turbochargers and Engines - How Turbochargers Work | HowStuffWorks
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