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:
Mar. 29, 2016
Filed:
Mar. 26, 2013
Applicant:
Ford Global Technologies, Llc, Dearborn, MI (US);
Inventors:
Helmut Hans Ruhland, Eschweiler, DE;
Albert Breuer, Cologne, DE;
Thomas Lorenz, Cologne, DE;
Moritz Klaus Springer, Hagen, DE;
Assignee:
Ford Global Technologies, LLC, Dearborn, MI (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F02D 41/14 (2006.01); F01N 11/00 (2006.01); F02D 41/30 (2006.01); F02D 13/02 (2006.01); F02D 41/00 (2006.01);
U.S. Cl.
CPC ...
F02D 41/30 (2013.01); F01N 11/007 (2013.01); F02D 13/0203 (2013.01); F02D 13/0261 (2013.01); F02D 41/1441 (2013.01); F02D 41/1454 (2013.01); F02D 41/1463 (2013.01); F02D 13/0276 (2013.01); F02D 41/0002 (2013.01); F02D 41/0007 (2013.01); F02D 2041/001 (2013.01);
Abstract
Methods and systems are provided for accurately measuring an air-fuel-ratio of an engine. During a first condition of decreased scavenging, adjusting fuel injection based on a more-upstream air-fuel ratio, and during a second condition of increased scavenging, adjusting fuel injection based on one or more more-downstream air-fuel ratios and not based on the more-upstream air-fuel ratio. During the first condition, adjusting fuel injection may be further based on the one or more more-downstream air-fuel ratios.