Patent ID: 8614541
Filing Date: 2013-12-24
Classification: H01T

Abstract:
1. A spark plug for igniting a mixture of fuel and air of an internal combustion engine, comprising: a center electrode having a center body portion extending longitudinally from a center electrode top end to a center firing end; a ground electrode having a ground body portion extending from a ground electrode top end toward said center firing end and presenting a ground firing end facing said center firing end; said body portion of at least one of said electrodes consisting of metal; a firing tip disposed on said firing end of said body portion consisting of metal; said firing tip providing a firing surface spaced from the other one of said electrodes by a spark gap; said firing tip formed entirely of electrically conductive ceramic material, said ceramic material including at least one oxide selected from the group consisting of TiO, VO, NbO, TaO, MnO, FeO, CoO, NiO, CuO, ZnO, V