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. 28, 2016
Filed:
Jun. 05, 2014
Applicant:
Ford Global Technologies, Llc, Dearborn, MI (US);
Inventors:
Gopichandra Surnilla, West Bloomfield, MI (US);
Daniel A. Makled, Dearborn, MI (US);
Richard E. Soltis, Saline, MI (US);
Jacobus Hendrik Visser, Farmington Hills, MI (US);
Assignee:
Ford Global Technologies, LLC, Dearborn, MI (US);
Primary Examiner:
Int. Cl.
CPC ...
F02D 19/08 (2006.01); F02D 19/06 (2006.01); G01M 15/10 (2006.01); F02D 41/12 (2006.01); F02D 41/24 (2006.01); F02D 41/00 (2006.01); F02D 41/14 (2006.01);
U.S. Cl.
CPC ...
F02D 19/087 (2013.01); F02D 19/0634 (2013.01); F02D 41/0025 (2013.01); F02D 41/123 (2013.01); F02D 41/1454 (2013.01); F02D 41/2438 (2013.01); F02D 41/2474 (2013.01); G01M 15/104 (2013.01); F02D 41/144 (2013.01); F02D 41/1439 (2013.01); F02D 41/1456 (2013.01); F02D 41/2441 (2013.01); F02D 2200/0418 (2013.01); F02D 2200/0612 (2013.01);
Abstract
Methods are provided for accurately learning part-to-part variability of an intake or exhaust oxygen sensor. A correction factor is learned based on sensor readings at voltages above and below a voltage corresponding to dry air conditions. An ethanol transfer function is then adjusted based on the learned correction factor so as to improve the accuracy of combusted fuel ethanol content estimation.