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Ignition Systems

Ignition Systems. Mr. Lombardi, Lombardo, Setter. DI and DIS. DI. DIS. Distributor Ignition. Distributorless Ignition. Distributor. Mechanical device which controls spark timing to the different cylinders through plug wires. DI Components. Distributor Body Distributor Shaft

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Ignition Systems

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  1. Ignition Systems Mr. Lombardi, Lombardo, Setter

  2. DI and DIS DI DIS • Distributor Ignition • Distributorless Ignition

  3. Distributor • Mechanical device which controls spark timing to the different cylinders through plug wires.

  4. DI Components • Distributor Body • Distributor Shaft • Distributor Cap • Rotor • Pick-up • Module • Coil • Distributor Gear • Advance Mech

  5. Distributor Body • Hollow aluminum housing that contains all the necessary parts like the shaft, pick-up, advance, rotor, etc…..

  6. Distributor Shaft • The actual spinning part of the distributor • Connected to cam • Spins pick-up • Spins rotor

  7. Distributor Cap • Molded plastic cap that covers the distributor and distributes electricity to the spark plugs via spark plug wires Underside of Cap

  8. Rotor • Mounts to shaft • Conducts spark from coil terminal to individual cap terminals

  9. Pick-up Coil • The pick up coil's purpose is to create the pulses of the distributor • The pulses tell the ignition module when to fire the secondary coil.

  10. Ignition Module • Amplifies and reshapes the pick-up coil wave

  11. Coil • The Coil multiplies voltage from the battery • 12V in 30,000V to 100,000V out

  12. Distributor Gear • Usually driven off Camshaft

  13. Advance Mechanisms • As RPM increases the combustion process must begin sooner • Two types of advance • Mechanical/Centrifugal • Vacuum

  14. Mechanical/Centrifugal Advance • As RPM increases Centrifugal Force pushes weights outward advancing the timing

  15. Vacuum Advance • In Ported Vacuum as vacuum increases so does timing. Increase RPM – Increase Vacuum • In Manifold Vacuum as vacuum decreases so does timing. Increase RPM – Decrease Vacuum

  16. Spark plug wires • There are several different Wire types and Manufactures depending on the application

  17. High Tension Ignition Wires • There are three basic wire types • CARBON SUPPRESSION CONDUCTORS • SOLID CORE CONDUCTOR WIRES • "LOW-RESISTANCE" SPIRAL WIRES

  18. Spark Plugs • Spark plugs come in different .. • heat ranges • Shapes • Sizes

  19. Chevy Runs deep

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