Development of Next-Generation High Ignitability Spark Plug

Along with the recent growing concern about global environmental pollution, there has been a movement in automotive engines toward lower fuel consumption, lower emissions, and high output. Accordingly, not only higher ignitability, but also improved performance under severe high temperature conditions are required for spark plugs to follow this trend. To meet these requirements, next-generation high ignitability spark plugs, equipped with an optimized firing end design, have been developed. This paper describes the development of these next-generation high ignitability spark plugs.