Spark plug
US4639635A · kind A · utility
2Cited by
6References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 7, 1984 |
| Grant date | Jan 27, 1987 |
| Priority date | — |
| Expiry date | Jun 7, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01T13/462
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention relates to a spark plug (1) comprising at least two insulated electrodes (5) and (6), an earthed electrode (7) and a chamber (4) so arranged with respect to one another that when a voltage is applied arcs are struck in series between electrodes (7) and (6) and (6) and (5) to provide a continuous plasma jet expelled from the chamber (4) at low energies (<100 mJ) and which can be used for combustion of a lean air/fuel mixture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.