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:
Dec. 13, 2016
Filed:
Oct. 11, 2013
Applicant:
Ford Global Technologies, Llc, Dearborn, MI (US);
Inventors:
Gopichandra Surnilla, West Bloomfield, MI (US);
Timothy Joseph Clark, Livonia, MI (US);
James Alfred Hilditch, Canton, MI (US);
Matthew John Gerhart, Dearborn Heights, MI (US);
Assignee:
Ford Global Technologies, LLC, Dearborn, MI (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F02D 43/00 (2006.01); F02D 41/00 (2006.01); F02D 41/14 (2006.01); F02D 41/30 (2006.01);
U.S. Cl.
CPC ...
F02D 43/00 (2013.01); F02D 41/005 (2013.01); F02D 41/0072 (2013.01); F02D 41/1401 (2013.01); F02D 41/144 (2013.01); F02D 41/1441 (2013.01); F02D 41/1456 (2013.01); F02D 41/30 (2013.01); F02D 2041/141 (2013.01); F02D 2041/1431 (2013.01); Y02T 10/47 (2013.01);
Abstract
Methods and systems are provided for correcting an EGR rate determined based on an intake manifold oxygen sensor based on an air-fuel ratio of EGR. The output of the sensor is corrected to compensate for extra fuel in rich EGR or extra air in lean EGR and used to reliably estimate the EGR rate. One or more engine operating parameters are adjusted based on an uncorrected output of the sensor.