Federal-Mogul World Wide, Inc.

Cooper Automotive Products, Inc.

Robert Scott Ingham

Daniel Lee Tribble

James D Lykowski

Randy Owen Knapp

Michael E Garrett

Timothy George Timko

Thomas R Schuster

A spark plug is installed in an internal combustion engine to monitor engine performance. The spark plug includes an outer shell having a central longitudinal axis and defining a first bore extending along the central longitudinal axis. The outer shell also includes a second bore that is offset from the central longitudinal axis. An insulative core is positioned in the first bore and defines a third bore concentric with the first bore. A first electrode is positioned in and has a firing end extending beyond the third bore. A second electrode including a firing surface is located adjacent to the firing end of the first electrode. A sensor is located within the third bore.

Spark plug with pressure sensor

A spark plug (100) includes a ground electrode (125), a firing electrode (115), an insulator core (105) having an insulator core nose (120), and an outer shell (110) surrounding the insulator core (105). The improvement includes the insulator core nose (120) including a high temperature glaze applied to an outer surface of the insulator core nose (120) and the high temperature glaze composition. The composition includes, by weight:

Anti-carbon fouling spark plug

A method of affixing a precious metal to an electrode includes placing a length edge of a generally cylindrical, precious metal wire on an electrode surface and resistance welding the wire to the electrode surface. The precious metal may include platinum.

Application of precious metal to spark plug electrode

A spark plug is installed in an internal combustion engine to monitor engine performance. The spark plug includes a core having a central longitudinal axis and defining a first bore extending along the central longitudinal axis. A layer of insulation surrounds the bore. A sensor is located within the bore. A first electrode is embedded in the core remote from the bore. The electrode includes a firing portion at a firing end of the spark plug. A ground electrode is arranged adjacent to the firing portion of the first electrode.

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Toledo, OH, United States of America

Robert Scott Ingham