Ignition Interference Suppressor

Ignition interference suppressors, also known as ignition noise suppressors or spark plug suppressors, are devices used to reduce or eliminate electromagnetic interference (EMI) caused by the ignition system in a vehicle or other internal combustion engine.

When an engine is running, the ignition system generates high voltage electrical pulses to ignite the fuel-air mixture in the combustion chamber. These electrical pulses can create electromagnetic interference that can interfere with the proper functioning of other electronic devices in the vehicle, such as the radio, GPS, or engine control unit.

Ignition interference suppressors are typically installed in the ignition system to suppress or filter out this interference. They work by reducing the amplitude and frequency of the electrical pulses generated by the ignition system, thereby reducing the EMI produced.

There are different types of ignition interference suppressors available, including spark plug wires with built-in suppressors, capacitors, and ferrite beads. These devices are designed to absorb or redirect the electrical noise generated by the ignition system, preventing it from interfering with other electronic components.

By installing ignition interference suppressors, the overall electromagnetic compatibility (EMC) of the vehicle's electrical system can be improved, reducing the potential for interference and ensuring the proper functioning of electronic devices.