Ignition system
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Ignition system

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Automobile Engineering

Automobile Engineering

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Ignition system Ignition system Presentation Transcript

  • Presented byAsheem Kumar PaloCenturion University, INDIA
  • INTRODUCTIONIgnition systems are mainly of two types;I. Spark ignition systemII. Compression ignition systemAn ignition system obeys laws of conservation of energy.Hence it can be treated as a balance of energy between;i. That provided by an external sourceii. That released by chemical reactioniii. That dissipated to the surroundings as thermal energy
  • REQUIREMENTS OF AN IGNITION SYSTEMIt should provide a good spark between theelectrodes of the plugs at the correct timingIt should function efficiently over the entire range ofengine speed.It should be light, effective & reliable in service.It should be compact and easy to maintain.It should be cheap and convenient to handle.
  • TYPES OF IGNITION SYSTEMSThe ignition systems are classified dependingupon how the primary energy for operating thecircuit is made available as:I. Battery Ignition SystemII. Magneto ignition system
  • Battery Ignition SystemComponents of Battery Ignition Systemo Batteryo Ignition switcho Ballast resistoro Contact breakero Capacitoro Distributor
  • o Ignition Coil
  • o Spark Plug
  • Operation of Battery Ignition Systemcamswitchballast IgnitiondistributorSparkplugcylinderprimary
  • Magneto Ignition SystemdistributorcoilcamcondenserSpark plugSecondary windingPrimary windingRotating magnetTwo poles shownContact breakerIgnition switch1234
  • Modern Ignition SystemsI. Capacitive discharge ignition system(CDI system)II. Transistorized coil ignition system(TCI system)
  • Capacitive discharge ignition system(CDI system)
  • Transistorized coil ignition system(TCI system)
  • AdvantagesReduced ignition system maintenanceReduced wear of the componentsIncreased reliabilityExtended spark plug lifeImproved ignition of lean mixture