Ignition System Distributor

The ignition system distributor is a component of the ignition system in an internal combustion engine. Its main function is to distribute high voltage electrical current from the ignition coil to the spark plugs in the correct firing order.

The distributor consists of a rotating shaft with a rotor attached to it. The rotor spins inside the distributor cap, which contains a series of contacts, known as the distributor cap terminals. Each terminal is connected to a spark plug wire, which delivers the electrical current to the spark plug.

As the rotor spins, it passes by each distributor cap terminal, sending a high voltage electrical pulse to the corresponding spark plug wire. This creates a spark at the spark plug, igniting the air-fuel mixture in the engine's cylinders.

In older vehicles, the distributor also houses a mechanical device called the ignition points, which open and close to control the timing of the spark. However, modern vehicles typically use electronic ignition systems, which eliminate the need for ignition points.

Overall, the ignition system distributor plays a crucial role in ensuring the proper ignition timing and firing order of the engine, which is essential for efficient combustion and engine performance.