The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 14, 2016
Filed:
Dec. 15, 2015
Methods and systems for determining a fuel concentration in engine oil using an intake oxygen sensor
Applicant:
Ford Global Technologies, Llc, Dearborn, MI (US);
Inventors:
Mohannad Hakeem, Dearborn, MI (US);
Gopichandra Surnilla, West Bloomfield, MI (US);
James Eric Anderson, Dearborn, MI (US);
Assignee:
Ford Global Technologies, LLC, Dearborn, MI (US);
Primary Examiner:
Int. Cl.
CPC ...
F01M 13/00 (2006.01); F02D 41/00 (2006.01); F02D 41/14 (2006.01);
U.S. Cl.
CPC ...
F02D 41/0052 (2013.01); F02D 41/0055 (2013.01); F02D 41/144 (2013.01); F02D 41/1454 (2013.01); F02D 41/1459 (2013.01); F02D 41/1486 (2013.01); F02M 26/46 (2016.02); F02D 2250/08 (2013.01); F02D 2250/11 (2013.01); F02M 2026/004 (2016.02);
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.