![]() ![]() That is the voltage spike that will create thousands of volts which will in turn cause the spark plug to fire and ignite the fuel. The voltage spike on the secondary coil becomes greater since it has more turns of the coil. So, when the switch is turned on, a change in the magnetic field occurs. The induced voltage is not enough to create a spark. The 12 volts battery powers up the primary coil on the spark plug, and then the primary coil induces a voltage on the secondary coil (still on the spark plug). When the current supply is cut off (switched off), the magnetic fields collapse into the wire. The magnetic field increases progressively as the current flows rapidly through the coil until it reaches a stable state. The magnetic flux stores charge which can be converted back to electricity. The electrical current flows through a conductor such as a coil and creates magnetic flux (or magnetic field) around it (the coil). The ignition coils use the relationship between electricity and magnetism to produce very high voltages. The primary goal of the ignition coil is to generate sufficient voltage required to create a spark. We will now learn how an ignition works in the ignition system of automobiles. Types of Ignitions and Their Wiring DiagramsĬonventional Breaker-points Ignition Systems
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