Methods and systems for determining a fuel concentration in engine oil using an intake oxygen sensor
US9234476B2 · kind B2 · utility
10Cited by
19References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 14, 2014 |
| Grant date | Jan 12, 2016 |
| Priority date | — |
| Expiry date | Jul 29, 2034 |
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.