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N2Performance.com - The Automotive Performance Professor, Jim McFarland
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Induction Systems

Summary

By one simplified definition, a typical automotive "induction system" is a network of passages connecting an engine's cylinders with a source of inlet air, attached to which is a metering device that regulates air or air/fuel mixtures. Such systems may include fuel injectors located downstream of the air inlet point or accommodate either carburetors or throttle body injection (TBI) units at a point servicing all passages to the engine's cylinders. That's a functional definition.

In a dynamic sense, an induction system includes a range of pressure conditions that can help an engine achieve torque (or volumetric efficiency) increases beyond that obtainable without the benefit of induction system "tuning". Several of these possibilities will be presented in this Performance Professor Lecture.

Interview:
Kenneth Sperry
Since 1975 Mr. Sperry has been responsible for air flow development of all engines released from General Motors Powertrain Technology facility.

(PDF: 957KB)
Lectures now available at Martel Brothers Performance

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