Suppression Of Quenching Effect
SUPPRESSION OF THE SPARK PLUG QUENCHING EFFECT
At cold starts it is very important to prevent conducting of the heat from the combustion core by the cold electrodes.
Convenient designs can fundamentally decrease the surfaces which cool the flame core in the first phases after the cold start.
Large parallel surfaces take a larg amount of heat to thecold electrodes at cold starts and they can cause the core to die in the phases of burning.
Small surfaces of the electrodes in the flame core zone can substantially limit the amount of heat conducted to the cold electrodes in the initial phase of combustion.
At the same time, they do notinhibit spreading of the flame front to the combustion chamber during usual operation.