Multi-electrode candles

Conventional spark plugs consist of two electrodes isolated from each other, between which an electric spark jumps.

Conventional spark plugs consist of two insulated electrodes between which an electrical spark jumps, igniting the mixture in the combustion chamber of the engine.

 

One of the most important maintenance measures for such candles was maintaining the correct distance between the electrodes, the so-called gap. The spark plug electrodes wear out during operation, and the gap increases. To eliminate this shortcoming, candles were designed with two or three side electrodes located at a constant distance from the central electrode. These spark plugs do not require gap adjustment, and the electrical spark that ignites the mixture passes through the base tip of the center electrode insulator and jumps to one of the side electrodes. The advantage of this type of spark, called air-gliding, is the certainty of its occurrence, since it can jump to one of several electrodes. When a spark slides over the surface of the ceramic, the soot particles burn out, which prevents a short circuit.

The proposed electrode system provides optimal ignition reliability, improves engine cold start, helping to protect the catalyst and increase its durability.

Multi-electrode spark plugs are not recommended for LPG engines.