Solid closed ended tubular oxygen sensor
US4152234A · kind A · utility
13Cited by
3References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 11, 1978 |
| Grant date | May 1, 1979 |
| Priority date | — |
| Expiry date | Jan 11, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/50
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A solid closed ended tubular oxygen sensor element, particularly useful for sensing the oxygen content of exhaust gases from internal combustion engines. The closed end of the tubular element which is adapted to be exposed to the hot exhaust gases is made of zirconium oxide stabilized with yttrium oxide and/or ytterbium dioxide. The remaining main portion of the tubular element is made of zirconium dioxide stabilized with calcium oxide. The invention also provides methods of manufacturing these tubular elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.