| 摘要 |
PROBLEM TO BE SOLVED: To provide an ignition device which represents satisfactory ignitability and durability even in an internal combustion engine where a strong cylinder inside airflow occurs within a combustion chamber.SOLUTION: A discharging space basis part 112 is formed by using a portion of a center dielectric body 11, a grounding electrode distal end portion 120 protrudes towards the inside of a combustion chamber 52 of an engine 5 with a predetermined grounding electrode protruding height H, and a center dielectric body distal end portion 110 protrudes with a center dielectric body protruding height Hequal to or higher than the grounding electrode protruding height H. |
