| 摘要 |
A spark plug (20) for igniting a mixture of fuel and air of an internal combustion engine comprises a center electrode (22) and a ground electrode (24) . At least one of the electrodes (22, 24) includes a body portion (28, 30) formed of thermally conductive material and a firing tip (32, 34) disposed on the body portion (28, 30) . The firing tip (32, 34) includes a ceramic material, providing an exposed firing surface (36, 38) . The ceramic material is an electrically conductive, monolithic ceramic material. The ceramic material of the firing tip (32, 34) includes at least one perovskite structure and/or at least one a spinel structure. |
