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:
May. 23, 2017
Filed:
Mar. 06, 2015
Applicant:
Ford Global Technologies, Llc, Dearborn, MI (US);
Inventors:
Hassene Jammoussi, Canton, MI (US);
Imad Hassan Makki, Dearborn Heights, MI (US);
Michael I. Kluzner, Oak Park, MI (US);
Robert Roy Jentz, Westland, MI (US);
Assignee:
Ford Global Technologies, LLC, Dearborn, MI (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F02D 41/12 (2006.01); F02D 41/00 (2006.01); F02D 41/14 (2006.01); F02D 41/02 (2006.01); F02D 41/22 (2006.01);
U.S. Cl.
CPC ...
F02D 41/1475 (2013.01); F02D 41/008 (2013.01); F02D 41/0085 (2013.01); F02D 41/0087 (2013.01); F02D 41/0225 (2013.01); F02D 41/123 (2013.01); F02D 41/126 (2013.01); F02D 41/1454 (2013.01); F02D 41/222 (2013.01);
Abstract
Methods and systems are presented for assessing the presence or absence of cylinder air-fuel ratio deviation that may result in air-fuel ratio imbalance between engine cylinders. In one example, the method may include assessing the presence or absence of air-fuel ratio errors based on deviation from an expected air-fuel ratio during a deceleration fuel shut-off event.