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Ignition systems

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How does a vehicles ignition system work?

Published in: Automotive
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Ignition systems

  1. 1. Ignition Systems
  2. 2. Ignition System Types  Points and Condenser  Electronic Ignition  DIS Distributorless Ignition System  Coil on plug (COP) All Systems have a primary and secondary circuits • Primary wires go to the coil (Low-Voltage) • Secondary wires are from the coil (High-Voltage)
  3. 3. Magnetic Induction
  4. 4. Ignition Coil
  5. 5. Points and Condenser
  6. 6. Points and Condenser
  7. 7. Distributor Cap and Wires
  8. 8. Points and Condenser System
  9. 9. Ignition System
  10. 10. Electronic Ignition
  11. 11. Electronic Ignition
  12. 12. DIS (Distributorless Ignition) Ground signal from PCM 12v Battery voltage
  13. 13. Waste Spark
  14. 14. Coil On Plug 12v battery power Ground signal from PCM.
  15. 15. Spark Plugs-Single Electrode
  16. 16. Spark Plugs-Dual Electrode
  17. 17. Spark Plugs-Four Electrode
  18. 18. ???????
  19. 19. Copper Spark Plug
  20. 20. Platinum Spark Plug Single Platinum Double Platinum
  21. 21. Iridium Spark Plug
  22. 22. Heat Range
  23. 23. Heat Range
  24. 24. Diagnosis
  25. 25. Which one is inside YOUR engine right now?
  26. 26. Ignition Timing  Timing light is hooked up to #1 spark plug wire  Timing is checked at crank shaft balancer  Adjusted by turning distributor (not adjustable on DIS or COP systems)
  27. 27. The Reason for Ignition Timing  As “Load” and RPM change so must timing  Low LOAD needs more timing  High LOAD needs less timing  Low RPM needs less timing  High RPM needs more timing
  28. 28. The Reason for Ignition Timing
  29. 29. The Reason for Ignition Timing
  30. 30. Timing Too Advanced  Hard starting (bite-back), starter damage  Engine “Ping”  Engine runs “Hot”  Increases HC emissions  Increases Nox emissions
  31. 31. Timing Too Retarded  Lowers HC  Poor gas mileage  Causes loss of power  Can make hard to start  Lowers engine vacuum
  32. 32. Inputs-Outputs (The Magic)
  33. 33. The End

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