Spark Plug is a device which generate the spark within the
engine cylinder for ignition of the fuel.
For ignition of the fuel we want approximately 20,000 Volts.
But as we know that in Two Wheelers only 6V or 12 V batteries are placed. Then from
where we get 20,000 Volts.
We get 20,000 Volts by using ignition Coil. Spark plug
consists Ignition coil.
Ignition Coil: The
ignition coil is a pulse transformer that transforms or steps up the low
battery or generator voltage to the high voltage, necessary to jump the gaps at
the spark plugs.
By using this coil voltage can be stepped up from 6V to 20,000
volts. This coil has a laminated core, around which is wrapped the primary
winding, consisting of hundred turn of relatively heavy wire and the secondary
winding which several thousand fine wire. The windings are properly insulated
from each other. The ignition coil is sealed to prevent entry of moisture which
would cause short circuiting within the coil.
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