Exhaust gas sensor diagnosis and controls adaptation
US9677491B2 · kind B2 · utility
11Cited by
0References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 7, 2013 |
| Grant date | Jun 13, 2017 |
| Priority date | — |
| Expiry date | Apr 14, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D2041/1431
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Methods and systems are provided reusing processed sensor data to identify multiple types of sensor degradation. In one example, a central peak of a distribution, such as a generalized extreme value distribution, of sensor readings is re-used to identify asymmetric sensor degradation and stuck in-range sensor degradation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.