| 摘要 |
PURPOSE: An electrode exchange type spark plug is provided to reduce an exchange cost of a spark plug by exchanging only a tip of the spark plug. CONSTITUTION: An electrode exchange type spark plug includes a center electrode, a ceramic insulator(130), a metal cell(140), and a bundle of ground electrodes(150). The center electrode is formed with a main body(120) and a center electrode tip. A male screw of an insulator is formed on a front end of the ceramic insulator(130). A male screw is formed on an outer circumference of a front end of the metal cell(140). A ground electrode is installed at each ground electrode(150). A male screw is formed on an outer circumference of each ground electrode(150). A female screw is formed on an inner circumference of each ground electrode(150).
|
