Spark plug ignition tip, spark plug device, and method for producing a spark plug ignition tip
AssigneeFederal-Mogul Ignition Company
InventorWerner Niessner
Life of this patent
Estimating the term…
Abstract
A spark plug ignition tip for an electrode of a spark plug device, in particular a prechamber spark plug, having a base body that has a first axial end, a second axial end and a circumferential section situated between them; the base body contains a precious metal or precious metal alloy; the first axial end and/or the circumferential section is embodied for fastening the base body to an electrode; the second axial end has a dome-shaped section; and the base body is produced by powder metallurgy.
Claims15
A spark plug ignition tip for a central electrode of a spark plug device, in particular a prechamber spark plug, having:
- a base body that has a first axial end, a second axial end, and a cylindrical circumferential section situated between the first and second axial ends, wherein the base body contains a precious metal or precious metal alloy;
- the first axial end is embodied for fastening the base body of the ignition tip to the central electrode;
- the second axial end is embodied for orientation towards a prechamber cap of the prechamber spark plug and has a dome-shaped section;
- and
- the base body is produced by powder metallurgy.
A method for producing a spark plug ignition tip for a central electrode of a spark plug device, in particular a prechamber spark plug, with the following steps:
- preparing a powder or powder mix composed of a precious metal or precious metal alloy;
- powder metallurgical forming of the powder or powder mix in the shape of a base body that has a first axial end, a second axial end, and a cylindrical circumferential section situated between the first and second axial ends;
- the first axial end is formed so that it can fasten the base body of the ignition tip to the central electrode;
- and the second axial end is formed so that it can be oriented towards a prechamber cap of the prechamber spark plug and includes a dome-shaped section;
- and
- sintering of the base body.
Dependencies are inferred from the claim text.