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DISTRIBUTORLESS IGNITION SYSTEMS Chapter 13

CBC. DISTRIBUTORLESS IGNITION SYSTEMS Chapter 13. ENGINE PERFORMANCE SPRING QUARTER. OPERATION of “EI” systems. WASTE SPARK METHOD BOTH CYLINDERS GET SPARK SIMULTANEOUSLY ONE PLUG IS POSITIVE POLARITY AND THE OTHER IS NEGATIVE ALL THE TIME (requires 30% more voltage)

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DISTRIBUTORLESS IGNITION SYSTEMS Chapter 13

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  1. CBC DISTRIBUTORLESS IGNITION SYSTEMSChapter 13 ENGINE PERFORMANCE SPRING QUARTER

  2. OPERATION of “EI” systems • WASTE SPARK METHOD • BOTH CYLINDERS GET SPARK SIMULTANEOUSLY • ONE PLUG IS POSITIVE POLARITY AND THE OTHER IS NEGATIVE ALL THE TIME (requires 30% more voltage) • COIL OUTPUT IS VERY HIGH

  3. TYPICAL DIS SYSTEM • CONTROL MODULE • CONTROLS TIMING AND SEQUENCING OF IGNITON COIL ACTION • LIMITS DWELL TIME • DIFFERENT SYSTEMS USE DIFFERENT REFERENCE SENSORS TO OBTAIN TIMING CONTROL

  4. SECONDARY CURRENT FLOW - SERIES CIRCUIT 405C

  5. TYPICAL COIL PACK 404C

  6. CYLINDER PAIRS

  7. IGNITION MODULE 406C • SIMILAR TO TFI STYLE MODULE • CONTROLS MORE THAN ONE COIL • DEPENDS ON CID SIGNAL TO DETERMINE WHICH CYLINDER TO FIRE

  8. CRANKSHAFT SENSOR 409C (CKP) Measures crankshaft RPM

  9. 410C CID signal Turns one half speed of crankshaft One signal per camshaft revolution Determines #1 cylinder Synchronizes Fuel Injectors CAMSHAFT SENSOR

  10. CYLINDER I.D. AND SPOUT

  11. GM “EI” COIL OPERATION PAGE 412 CLASS, FIG 13-12

  12. SPOUT SIGNAL (6 CYL ENG.)

  13. Look Mister, This ain’t Burger King, you get it my way or you don’t get it at all!

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