Torch jet spark plug electrode
US6611083B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 15, 2000 |
| Grant date | Aug 26, 2003 |
| Priority date | — |
| Expiry date | Jan 20, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01T13/54
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The torch jet spark plug comprises a shell with an insulator body concentrically disposed within at least a portion of the shell. A pre-chamber is concentrically disposed within at least a portion of the shell and at least a portion of the insulator body, the pre-chamber having an orifice disposed at a first end of the pre-chamber and at an insulator body first end. On at least a portion of a pre-chamber internal surface is an inner electrode comprising up to about 75 vol. % of a bonding agent, about 20 vol. % or greater of a catalytically active material, and about 5 vol. % or greater of a transition metal material. At least partially disposed within a second end of the insulator body, opposite the insulator body first end is an upper terminal. Finally, an upper electrode is disposed within the insulator body, between the inner electrode and the upper terminal, and in a spaced relation to the inner electrode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.