Spark plug with optical sensor
US7696679B2 · kind B2 · utility
1Cited by
11References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 5, 2005 |
| Grant date | Apr 13, 2010 |
| Priority date | — |
| Expiry date | Mar 20, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01T13/48
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A spark plug has an optical window for sensing combustion processes in an Otto engine. The optical window is located in the central electrode of the spark plug and has at least one lens exposed to the combustion chamber, as well as at least one flexible optical fiber which can conduct light through the spark plug from the lens to an analysis system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.