System and method for reducing engine oil dilution
US9470173B2 · kind B2 · utility
4Cited by
2References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 18, 2014 |
| Grant date | Oct 18, 2016 |
| Priority date | — |
| Expiry date | Jan 10, 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 modeling an oil dilution qualitative indicator based on an integrated difference between a commanded air-to-fuel ratio and an engine air-to-fuel ratio as determined via an oxygen sensor, cumulative cold engine temperature operating duration, and fuel injection characteristics (timing, duration, number of injections) allowing fuel injection timing modifications that minimize oil dilution when the oil dilution qualitative indicator is greater than a threshold level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.