| 摘要 |
PCT No. PCT/AT91/00075 Sec. 371 Date Dec. 24, 1992 Sec. 102(e) Date Dec. 24, 1992 PCT Filed Jun. 28, 1991 PCT Pub. No. WO92/00620 PCT Pub. Date Jan. 9, 1992.A spark plug with a central electrode insulated against the plug thread having ground electrodes electrically connected to the plug thread, in which a prism-shaped cap is arranged at the end of the central electrode in the combustion chamber and the ground electrodes are parallel to the sides of the prism of the cap. The ground electrodes consist of at least one holder of a base or semi-precious metal on which a thin electrode layer of platinum or a platinum alloy is arranged facing the cap of the central electrode. The ground electrodes are configured in the form of a V-shape or a Y-shape. |
