Open-chamber multi-spark plug
US7928642B2 · kind B2 · utility
4Cited by
4References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 5, 2006 |
| Grant date | Apr 19, 2011 |
| Priority date | — |
| Expiry date | Oct 27, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01T13/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An internal combustion engine radio frequency spark plug including two plasma-generating electrodes, separated by an insulator, that constitute respectively an outer shell enclosing the insulator and a central electrode housed in a central bore of the insulator. The spark plug includes a deep opening over the entire circumference of the shell, forming a heat-exchanger chamber inside the spark plug shell, opening outwards.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.