What is Ignition Coil

Here is the complete guide about Ignition Coil. Here you can get Ignition Coil working principle, Main Parts and Applications ect.

An ignition coil (also called a spark coil) is an induction coil in an automobile’s ignition system that transforms the battery’s voltage to the thousands of volts needed to create an electric spark in the spark plugs to ignite the fuel.

Ignition Coil

An ignition coil (also called a spark coil) is an induction coil in an automobile’s ignition system that transforms the battery’s voltage to the thousands of volts needed to create an electric spark in the spark plugs to ignite the fuel. Some coils have an internal resistor, while others rely on a resistor wire or an external resistor to limit the current flowing into the coil from the car’s 12-volt supply. T

he wire that goes from the ignition coil to the distributor and the high voltage wires that go from the distributor to each of the spark plugs are called spark plug wires or high tension leads. Originally, every ignition coil system required mechanical contact breaker points and a capacitor (condenser). More recent electronic ignition systems use a power transistor to provide pulses to the ignition coil. A modern passenger automobile may use one ignition coil for each engine cylinder (or pair of cylinders), eliminating fault-prone spark plug cables and a distributor to route the high voltage pulses.

Ignition systems are not required for diesel engines which rely on compression to ignite the fuel/air mixture.

Working Principle

Ignition coil mainly consists of primary winding, secondary winding and an iron core. When the modern-day thru the primary winding makes and breaks again and again through contact breaker, it induces a completely excessive voltage in the secondary winding (approximately 50000 V). This high voltage from the secondary winding is transferred to the spark plug through ignition distributor to produce spark in the cylinder.

Principle Parts

The different principle parts of start curl are

  1. Primary Winding
  2. Secondary Winding
  3. Iron core
  • Primary Winding

It is comprised of thick copper wire having 200 to 300 diverts protected from one another

  • Secondary Winding

It is comprised of thin copper wire having huge number of turns around 21000 turns. The wires in the auxiliary winding are protected from one another by enameled on the wire.

  • Iron Core

It comprises of a covered iron center. It is utilized to store vitality as attractive field.

Construction

In ignition coil, the iron center is present at the center, and the primary and secondary windings surround it. The number one winding consists of thick wire of copper having 200 to 300 flip insulated from every other. On the opposite hand secondary winding is made up of skinny copper wire having 2100 turns and insulated form every different through teeth on the wires and layers of oiled paper insulation.

Working of Ignition Coil

  1. When the ignition switch is ON, the current through the primary winding starts to flow, this creates magnetic field in the iron core and around it.
  2. As contact breaks in the contact breaker, the primary current collapses. This also collapses the magnetic field in the core. This sudden breaking of the magnetic field induces a very high voltage across the secondary winding. The magnitude of the voltage induced is about 50000 Volt.
  3. This high voltage then is transferred to the spark plug through the ignition distributor to produce spark for the ignition.

Applications

It is generally utilized in car start framework and in those vehicles which is controlled by oil motors, for example, bike, cruisers, autos and so on.

It isn’t utilized in the vehicles running structure diesel motor.

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