Integrated molding and inking process for forming a torch jet spark plug
US5405280A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 28, 1994 |
| Grant date | Apr 11, 1995 |
| Priority date | — |
| Expiry date | Feb 28, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01T13/54
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method is provided for forming a torch jet spark plug suitable for use in a torch jet-assisted spark ignition system for an internal combustion engine. The torch jet spark plug is configured to ignite a fuel mixture within a combustion prechamber formed integrally within the insulator body of the spark plug, such that a jet emanates from the prechamber and projects into the main combustion chamber of the engine, so as to increase the burning rate within the main chamber. More particularly, the method involves forming a tubular inner electrode on the internal surface of the combustion prechamber by integrating the molding process for the spark plug's insulator body with an inking process by which the inner electrode is formed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.