Methods and systems for determining a fuel concentration in engine oil using an intake oxygen sensor
US9366197B2 · kind B2 · utility
3Cited by
27References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 15, 2015 |
| Grant date | Jun 14, 2016 |
| Priority date | — |
| Expiry date | Dec 15, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Methods and systems are provided for estimating a fuel concentration in engine oil in an engine crankcase. In one example, an engine controller may adjust engine operation such as EGR flow and engine fueling based on the estimated fuel concentration in engine oil. The fuel concentration may be based on an output of an intake oxygen sensor when purge and EGR flow are disabled, engine oil temperature, and fuel composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.