System for detecting deterioration of catalyst in catalytic converter
US5060473A · kind A · utility
22Cited by
3References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 13, 1989 |
| Grant date | Oct 29, 1991 |
| Priority date | — |
| Expiry date | Jul 13, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A system for detecting deterioration of a catalyst monitors temperature of catalyst. The system sets a temperature criterion which represents possible lowest temperature when the catalyst is in a normal condition. Abnormality of the catalyst is detected by detecting the catalyst temperature lower than the temperature criterion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.