Ignition Coil: Description and Operation

Ignition Coli:

The Ignition Coils (6), located above each spark plug, uses the principle of mutual induction to step up battery (low) voltage to ignition (high) voltage. The Ignition Coil contains two sets of copper wire windings around a soft iron core. The primary winding is made of a hundred or so turns of a heavy gage wire. It is connected to the battery (through the ignition coil relay) so that current flows through it, thus creating a magnetic field. When current flow in the primary winding is stopped (by the power transistor), the collapse of the magnetic field causes a voltage to be induced in the secondary windings. The ratio of turns in the primary windings to the number of turns in the secondary windings determines the voltage multiplication. This engine uses six ignition coils.