Patent ID: 8269405

Claim:
A neutral electrode spark plug for an internal combustion engine comprising: a) a cylindrical metallic shell having a tubular ceramic insulator with an insulator tip enclosed therein, wherein said tubular ceramic insulator has a cylindrical shaped bottom portion that converges into said insulator tip having a rectangular shape with radial ends that extends from said metallic shell from 0.10 inches (2.54 mm) to 0.20 inches (5.08 mm), b) a central electrode surrounded by the ceramic insulator within the metallic shell with the central electrode having a firing tip extending from the insulator tip of the ceramic insulator, c) a neutral electrode extending from the insulator tip of the ceramic insulator, the neutral, electrode having a first spark gap separated from the central electrode, and d) a side ground electrode attached to the metallic shell, laterally aligned with the central electrode and the neutral electrode, with the ground electrode having a second spark gap separated from the neutral electrode, and a third spark gap separated away from the insulator tip.