Solid electrolyte air/fuel ratio sensor with voltage control
US5047137A · kind A · utility
2Cited by
4References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 6, 1986 |
| Grant date | Sep 10, 1991 |
| Priority date | — |
| Expiry date | Oct 6, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/4065
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An air/fuel ratio sensor with a solid electrolyte oxygen pump and oxygen sensor defining a closed space therebetween. At least in the oxygen pump, porous electrodes sandwich an ionic oxygen conductive solid electrolyte. The voltage impressed on the electrodes of the pump is limited to a predetermined level, e.g., 6 V, in order to prevent blackening and cracking.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.