Ignition System

How The Ignition System Of A Car Works? Read More


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Ignition System in Petrol Engines:

An electrical system that facilitates delivering an extremely strong electric pulse to each spark-plug is called the ignition system. It supplies the high voltage current all the way from the ignition coil to the spark plug.

Manufacturers employ the ignition systems specifically in the spark-ignition (SI) engines. Its because they use the spark-plug to ignite the air-fuel mixture. It works on the petrol engine for igniting the air-fuel mixture. However, a diesel engine DOES NOT need an ignition coil.



Types of Ignition Systems:

Manufacturers employ different types of ignition systems in vehicles. The first type comes with the 'contact-breaker' mechanism that triggers the spark. Earlier generation vehicles used this type of ignition system.

Ignition System Circuit
Ignition System Circuit

The second type is ‘breaker-less’ or 'contactless' ignition. In this, the manufacturers use an optical pickup or electronic transistor as a switching device. This is the most common type of ignition system that you can find in modern cars.



The third type is the capacitor discharge ignition. In this technology, the capacitor all of a sudden releases the energy stored in it through a coil. It also has the ability to produce the spark in low conditions where the conventional ignition may not work. CDI also helps in conforming to the emission control regulations. Due to the several benefits it offers, it has become a standard feature in modern cars and motorcycles.

Components of the Ignition System:

The conventional Ignition System consists of the following parts.

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