| 摘要 |
Provided is a spark plug that enables electromagnetic wave power loss to be reduced and in which there is no erosion of a central electrode tip portion even if the spark plug is configured so as to supply power for electromagnetic waves and a high voltage for discharge from the terminal side of the spark plug. Thus, an electrode part (2) is composed of a central electrode (2A) provided with an electrode tip for producing a discharge spark between the central electrode and a ground electrode (5), and a cylindrical insulation tube (2B) that covers the central electrode (2A). A conductive member (21) is provided to the outer peripheral surface of the insulation tube (2B), and the central electrode (2A) is electrically connected to a terminal (20) that receives a supply of power from outside. |
