Construction of Spark Plug Its Working and Its types

All of us are at least familiar with the name of the spark plug. Most commonly we observe it in our bikes. But how does it works, what is its internal construction and what are its types? Today Electrical Engineering Videos shares the construction, working, and types of the spark plug. Let’s start learning. You can read the text or can scroll down to directly watch the video.

A spark plug generates a spark to ignite the combustible mixture. It consists of a steel covering shell which covers the components.

The major electric parts involve a resistor and two electrodes. Resistor controls the passage of current flowing through it, whereas two nickel alloy electrodes are namely the central electrode and the ground electrodes. The central electrode carries the high current and is insulated from steel shell by using porcelain. On the other hand, the ground electrode is welded to steel shell of the spark plug and is grounded (as the name indicates).

During its working, the High value of current flow through the central electrode and ionizes the current present between the electrode and produces a spark.

Spark plugs are of divided in two:

  1. Hot type spark plug
  2. Cold type spark plug
Hot type spark plugs have a long insulated tip and a long heat rejection path. They are mostly used in bikes and cars.
On the other hand, cold type spark plugs have short insulation tip and a short rejection path. They are used in racing cars, trucks and other engines where the temperature is very high.
Let’s watch this video on the construction, working, and types of the spark plug. In case of trouble please use the buttons below.

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