Model-based diagnostics of NOx sensor malfunction for selective catalyst reduction system
US8555613B2 · kind B2 · utility
35Cited by
2References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 2, 2009 |
| Grant date | Oct 15, 2013 |
| Priority date | — |
| Expiry date | Apr 13, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Methods and systems for detecting faults with nitrogen oxides sensors used to detect the presence of nitrogen oxides in an exhaust effluent gas stream emitted from a combustion engine during its operation include providing a virtual nitrogen oxides sensor measurement compared with actual nitrogen oxides content measured by nitrogen oxides sensors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.