Patent ID: 6603245
Filing Date: 2003-08-05
Classification: H01T

Abstract:
A spark plug for producing a plurality of sparks which define a three-dimension volume in a combustion chamber of an internal combustion engine, the spark plug comprising:an insulative body having support end; a central positive electrode extending through the insulative body and having a spark ignition end; a conductive outer shell disposed about the insulative body; a plurality of neutral electrodes formed on a continuous and curved surface of the support end of the insulative body, wherein a first one of the neutral eLectrode being adjacent the spark ignition end of the central positive electrode and spaced apart therefrom to form a spark gap therebetween, a last one of the neutral electrode being directly adjacent the conductive outer conductive shell and spaced apart therefrom to form a spark gap therebetween, and the neutral electrodes are adjacent and spaced apart from each other to form a series of spark gaps extending three-dimensionally from the spark ignition end to the conductive outer shell.