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:
Aug. 16, 2011
Filed:
Oct. 29, 2007
Applicants:
Eva Thanasiu, Trenton, MI (US);
Christian Thomas Goralski, Jr., St. Paul, MN (US);
Robert Joseph Jerger, Dexter, MI (US);
Shane Elwart, Ypsilanti, MI (US);
Inventors:
Eva Thanasiu, Trenton, MI (US);
Christian Thomas Goralski, Jr., St. Paul, MN (US);
Robert Joseph Jerger, Dexter, MI (US);
Shane Elwart, Ypsilanti, MI (US);
Assignee:
Ford Global Technologies, LLC, Dearborn, MI (US);
Primary Examiner:
Int. Cl.
CPC ...
F01N 3/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method is described for identifying fuel composition from an index ratio of oxygen sensors upstream and downstream of a catalyst of the engine. Different index ratios are achieved for different fuel compositions, and thus it is possible to identify fuel composition, such as fuel alcohol content, based on changes in the index ratio.