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:
Apr. 19, 2016
Filed:
Apr. 05, 2013
Applicant:
Ford Global Technologies, Llc, Dearborn, MI (US);
Inventors:
Thomas G. Leone, Ypsilanti, MI (US);
William Charles Ruona, Farmington Hills, MI (US);
Todd Anthony Rumpsa, Saline, MI (US);
Assignee:
Ford Global Technologies, LLC, Dearborn, MI (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F02D 43/00 (2006.01); F02D 41/18 (2006.01); F02D 37/00 (2006.01); F02D 41/00 (2006.01); F02B 37/18 (2006.01);
U.S. Cl.
CPC ...
F02D 43/00 (2013.01); F02B 37/18 (2013.01); F02D 37/00 (2013.01); F02D 41/0002 (2013.01); F02D 41/182 (2013.01); F02D 2041/001 (2013.01); F02D 2200/0602 (2013.01); F02D 2250/18 (2013.01); F02D 2700/02 (2013.01); Y02T 10/144 (2013.01); Y02T 10/42 (2013.01);
Abstract
Methods and systems are provided for maintaining stoichiometry of an exhaust gas during operation of a fuel injector at a threshold pulse width. In response to operation of a fuel injector at the threshold pulse width and a rich exhaust gas air-fuel ratio, airflow is increased to the intake manifold. Engine actuators may also be adjusted to maintain torque during the increased airflow while operating the fuel injectors at the threshold pulse width.