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""Super Ignition Plug?? With Fine Center and Ground Electrodes
Published September 17, 2003 by Society of Automotive Engineers of Japan in Japan
Event: JSAE Autumn Conference
Spark plugs with higher ignitability are continuously in great demand to realize high fuel efficiency and low emissions. To meet this demand, we have been developing fine center electrodes with highly wear-resistant iridium alloy. However, the effort to miniaturize the center electrode has reached its limit. Therefore, we focused on miniaturization of the ground electrode in addition to the center electrode, and have succeeded in developing the ""Super Ignition Plug?? that features not only excellent ignitability but also long life.