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How Ignition Of Car Engine Works

How Ignition Of Your Engine Moves Your Car

Understanding How Ignition Of Car Engine Works

Have you ever wondered about how the turning of your key and ignition of your engine causes the movement of your car?

It has always kept me wondering the mechanics behind this glorious invention.

In this article, we examine the step by step processes involved in the ignition of automobiles to their movement

When a driver turns a key in the ignition,
The car battery powers up, sending power to the starter motor.

This power then turns the crankshaft.

How Ignition Of Car Engine Works
How Ignition Of Car Engine Works

When the crankshaft starts moving, it gets the pistons moving, and with the pistons moving the motor fires up and ticks over a fan.

A fan brings air into the motor utilizing an air channel and the air channel eliminates earth and grit from the air.

The cleaned air is brought into a chamber where fuel petroleum or diesel is added.

This produces a  fuel-air blend.

A vaporized gas is put away in the chamber and the driver presses the gas pedal when the choke valve is opened.

The fuel-air blend goes through an admission complex and is appropriated through throttle valves into the chambers.

The camshaft controls the opening and shutting of the valves.

The subsequent explosion powers a cylinder to drop down which then makes the crankshaft turn.

How Ignition Of Car Engine Works
How Ignition Of Car Engine Works

When the crankshaft starts to rotate the movement of the car occurs.

Special Terms Used In Understanding How Ignition Of Car Engine Works

Starter Motor

A starter motor is a device used to rotate an internal combustion engine.

It is used to initiate the engine’s operation under its power.

It is one of the key agents of ignition.

Starters can be electric, pneumatic, or hydraulic.


The crankshaft is a moving part of the internal combustion engine (ICE).

Its main function is to transform the linear motion of the piston into rotational motion.

The pistons are connected to the crankshaft through the connecting rods.

The secondary function of the crankshaft is to transmit power to other engine systems.


How Ignition Of Car Engine Works

In an engine, its purpose is to transfer force from expanding gas in the cylinder to the crankshaft via a piston rod and/or connecting rod.

Air Filter

A particulate air filter is a device composed of fibrous, or porous materials that removes solid particulates such as dust, pollen, mold, and bacteria from the air.

Throttle valve

The valve, in internal combustion, is incorporated in or just outside the carburetor.

It controls the volume of the vaporized fuel charge in an engine.


The camshaft is a mechanical component of an internal combustion engine.

It opens and closes the inlet and exhaust valves of the engine.

How Ignition Of Car Engine Works

This is the same principle that all automobiles follow for their movement.

Trains and other means of transportation do not follow this principle.

They have their mechanisms for movement.


Well, you might not be a mechanical engineer with a degree but now you understand how turning your key translates to the movement of your car.

This is the end of this article, I hope it was helpful.

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