Composite ceramic electrode and ignition device therewith
AssigneeFederal-Mogul Ingnition Company
InventorsWilliam J. Walker, Jr., James D. Lykowski
Life of this patent
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Abstract
A spark plug, center electrode and method of construction is provided. The spark plug has a generally annular ceramic insulator and a conductive shell surrounding at least a portion of the ceramic insulator. A ground electrode is operatively attached to the shell, with the ground electrode having a ground electrode sparking surface. A center electrode has an elongate body with a center electrode sparking surface. The center electrode sparking surface and the ground electrode sparking surface provide a spark gap. The center electrode body is constructed of a composite material including at least one ceramic material.
Claims11
A center electrode for a spark ignition device, said center electrode comprising:
- an elongate body having a width and a length extending along a longitudinal axis, said body being constructed of a composite material including at least one ceramic material and a conductive material, wherein said body has a non-uniform concentration of said ceramic and conductive materials across the width of said body.
Dependencies are inferred from the claim text.