Exhaust gas sensor controls adaptation for asymmetric degradation responses
US9249751B2 · kind B2 · utility
1Cited by
1References
20Claims
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Key dates
| Filing date | May 23, 2013 |
| Grant date | Feb 2, 2016 |
| Priority date | — |
| Expiry date | Apr 2, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D2041/228
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Methods and systems are provided for converting an asymmetric degradation response of an exhaust gas sensor to a more symmetric degradation response. In one example, a method includes adjusting fuel injection responsive to a modified exhaust oxygen feedback signal from an exhaust gas sensor, the modified exhaust oxygen feedback signal modified by transforming an asymmetric response of the exhaust gas sensor to a more symmetric response. Further, the method may include adjusting one or more parameters of an anticipatory controller of the exhaust gas sensor based on the modified symmetric response.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.