Air injection system diagnostic
US5113651A · kind A · utility
17Cited by
1References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 1, 1991 |
| Grant date | May 19, 1992 |
| Priority date | — |
| Expiry date | Apr 1, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A comprehensive air injection system diagnostic uses hardware already available on many vehicle exhaust systems to monitor the oxygen content of the exhaust, so as to indicate steady state oxygen levels therein that are not in accord with the present state of the air injection system, and accordingly are assumed to be the result of a failure in the air injection system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.