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Induction

Induction. Mr. Lombardi. Induction . The term “induction” applies to the pathway for fuel and air to enter the combustion chamber. Including: Carburetion Fuel Injection Manifolds. Carburetors. Rely on the Venturi Vacuum principle Rated in CFM 3 Common Styles 1 Barrel 2 Barrel

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Induction

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  1. Induction Mr. Lombardi

  2. Induction • The term “induction” applies to the pathway for fuel and air to enter the combustion chamber. • Including: • Carburetion • Fuel Injection • Manifolds

  3. Carburetors • Rely on the Venturi Vacuum principle • Rated in CFM • 3 Common Styles • 1 Barrel • 2 Barrel • 4 Barrel (square bore/spread bore)

  4. Venturi Vacuum

  5. 1 Barrel (200 – 400 CFM)

  6. 2 Barrel (350 – 500 CFM)

  7. 4 Barrel (400 – 1150 CFM)

  8. Square Bore Vs. Spread Bore

  9. First Fuel Injection In 1910, Adams Farwell pioneered a non-carbureted fuel system called fuel injection, refined and adopted for diesel engines. But it wasn't until after World War II that thought was given to putting it on spark-ignited gasoline engines.

  10. Typical Injector

  11. Fuel Injection • Fuel injection atomizes the fuel by forcibly pumping it through a small nozzle under high pressure (15-90 psi). • Throttle Body Injection • Port Fuel Injection

  12. Throttle Body Injection • 1 or 2 Injectors for engine

  13. Port Fuel Injection • An injector per cylinder aimed at the port opening.

  14. Direct Injection • An injector per cylinder spraying inside the cylinder.

  15. Intake Manifold • “Wet” for Carbureted applications • “Dry” for Injected applications • Older manifolds were made from Cast Iron • Modern manifolds are made from Aluminum • Future manifolds will almost always be made of plastic (vinyl, phenolic resin, etc.)

  16. Carbureted Intake Manifold

  17. Injected Intake Manifold

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