SPARK IGNITION DEVICE FOR AN INTERNAL COMBUSTION ENGINE AND SPARKING TIP THEREFOR

摘要

A spark ignition device is provided having an electrode sparking tip constructed from an AuPd alloy with the addition of at least 3 wt.% of a precious metal element selected from at least one of platinum, iridium, rhodium and ruthenium. The gold counteracts oxidation of the palladium and the additional elements provide the sparking tip with high temperature and high strength mechanical properties and resistance to alloying with the combustion constituents during use.