Electronic Ignition System Description

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The electronic ignition system on both single overhead cam (SOHC) and dual overhead cam (DOHC) engines provides spark energy to ignite the air/fuel mixture necessary for combustion. The powertrain control module (PCM) controls spark under all engine running conditions. The system components includ...

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Document Title: Electronic Ignition System Description

ignition

spark

fuel

combustion

control

module

engine

running

conditions

coil

plug

knock

sensor

degrees

present

coil

uses

signal

volts

fire

secondary

voltage

circuit

tower

spark

cylinder

determine

cylinder

compression

sense

detects

fired

polarity

amplitude

ground

resistance

retard

timing

level

noise

event

spark knock

knock present

control signal

spark plug

fired compression

cylinder secondary

noise level

combustion event

spark retard

spark plug wire

compression sense ignition

cylinder fired compression

fired compression stroke

signal circuit pulled

ground result decreased

result decreased cylinder

decreased cylinder secondary

resistance increased cylinder

increased cylinder secondary