Fiber optic misfire, knock and LPP detector for internal combustion engines
US5763769A · kind A · utility
32Cited by
9References
3Claims
0Family size
Inventor
Key dates
| Filing date | Oct 16, 1995 |
| Grant date | Jun 9, 1998 |
| Priority date | — |
| Expiry date | Oct 16, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L9/0077
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A fiber optic spark plug integrated combustion pressure detector comprises the sensitive sensor head with "snap" action diaphragm to provide the temperature insensitivity to combustion temperature variations. The optical module is integrated into the electrical connector to eliminate open optical interfaces. The "snap" action and special diaphragm shape selectively increase detector knock and misfire discrimination. The pressure sensor can be made spark plug integrated or injected in block cylinder for combustion pressure sensing in engine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.