Home » Ai Basics Digest » How Does a Distributor Ignition System Work?

How Does a Distributor Ignition System Work?

Robert Thorne • • 7 min read
How Does a Distributor Ignition System Work?

Distributor-based ignition systems

A 'rotor arm' inside the distributor is driven by the engine, and rotates inside the distributor cap. The coil is connected to the rotor arm, which spins past a series of contacts – one for each of the engine's cylinders.

How does an ignition distributor work?

The distributor is tasked with receiving high voltage from the ignition coil to spark the individual spark plugs in proper firing sequence. The distributor acts as a spinner, ensuring that spark is continuously distributed to each spark plug.

What are the 3 types of ignition systems?

There are three basic types of automotive ignition systems: distributor-based, distributor-less, and coil-on-plug (COP). Early ignition systems used fully mechanical distributors to deliver the spark at the right time. Next came more reliable distributors equipped with solid-state switches and ignition control modules.

Robert Thorne
Author

Robert Thorne

Robert Thorne covers electric vehicle innovations, autonomous driving systems, global mobility trends, and automotive engineering developments.