How ignition coil works on your car

How ignition coil works on your car

Revealed by: Lily

On: 15 Jan, 2020

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Category: Circuit

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Ignition system in modern era didn't need a distribution or commonly known as distributorless ignition system (DIS), using ignition more than one or each cylinder served with one ignition coil said Henry Hutabarat as Technical Trainer from automot...

Ignition system in modern era didn't need a distribution or commonly known as distributorless ignition system (DIS), using ignition more than one or each cylinder served with one ignition coil said Henry Hutabarat as Technical Trainer from automotive company consultant Sewells.

car ignition schemes that still use cdi

car ignition schemes that still use cdi


There is another system called waste spark system, which a ignition coil can be used for double cylinder. But today most used by car’s company is a DIS system as told at previous, which shape of ignition coil compiled with spark plug’s headline, or can be mentioned as Coil On Plug (COP). DIS system claimed more efficiency and easy way to diagnosis the damage in coil.

modern car coil now without using a distributor or distributorless

modern car coil now without using a distributor or distributorless


The feather question followed why a car needs a coil to support ignition coil? the function of coil is to transform electrical voltage which normally only 12V became thousand volt for creating sparks jump on the spark plug gap. The biggest or smallest voltage needed depend on how much is parameter needed. Highest voltage produced by coil not only stuck on one voltage its can be 5000 volt until 25.000 volt, even on few car's ignition system highest performance can reach 40.000 volt.


How ignition coil is works?


In ignition coil can be found a double rolls with core iron. That rolls available double. Primary roll connected with a key system as main voltage's supplier and secondary roll functioned as a ground. And there is a one roll inside ignition coil consists of thousand cooper coil. One coil to positive terminal and another one is highest voltage output.

the picture above shows the inside of the car coil

the picture above shows the inside of the car coil


the important things to know is the distinguish between amount of winding, the reel between main and secondary can be 80:1. In comparison biggest can produced highest voltage by ignition coil. Car with best performance commonly used highest coil comparison for daily car used. We hope the theory above make you easy to understand than the feather question are how it's works? Since ignition module compiled through main circuit to the mass, automatically electric current will flow through that coil. Collected electrical toward iron core can be magnetic field.


Then, ignition module suddenly cut off primary coil current to the mass. In this case can make magnetic fields that have already formed also fell suddenly and produce high voltage induction in the secondary coil. This process can raise multiple electric’s voltage. This super highest voltage then flowed to the spark plug to be able to spit fireworks.

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