Yasutake Ishino

Spark plug for internal combustion engine having better self-cleaning function

Spark plug for an internal combustion engine

Structure of spark plug designed to provide higher wear resistance to center electrode and production method thereof

Spark plug designed to minimize drop in insulation resistance

I.c. engine spark plug with plural spark gaps and better self-cleaning function

Development of New Concept Iridium Plug

Zum Minimieren eines Isolationswiderstandsabfalls gestaltete Zündkerze To minimize an insulation resistance drop shaped spark plug

A spark plug with provision for self cleaning and a wear resisting member on the centre electrode

Aufbau einer Zündkerze, der für einen höheren Verschleißwiderstand einer Mittelelektrode sorgt, und Verfahren zum Herstellen von selbiger Structure of a spark plug that provides a higher resistance to wear of a center electrode, and method for producing Selbiger

Structure of a spark plug that provides a higher resistance to wear of a center electrode, and method for producing Selbiger