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:
Jan. 16, 2018
Filed:
Apr. 27, 2015
Applicant:
Ford Global Technologies, Llc, Dearborn, MI (US);
Inventors:
Thomas G. Leone, Ypsilanti, MI (US);
Joseph Norman Ulrey, Dearborn, MI (US);
Mark Allen Dearth, Dearborn, MI (US);
Assignee:
Ford Global Technologies, LLC, Dearborn, MI (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B60T 7/12 (2006.01); G06F 19/00 (2011.01); F02P 5/00 (2006.01); F02M 21/02 (2006.01); F02B 47/02 (2006.01); F01N 3/04 (2006.01); F01N 3/20 (2006.01); F01N 9/00 (2006.01); F02D 41/00 (2006.01); F02D 41/02 (2006.01); F02D 41/06 (2006.01); F02N 11/08 (2006.01); F02D 17/02 (2006.01); F02D 41/04 (2006.01);
U.S. Cl.
CPC ...
F02B 47/02 (2013.01); F01N 3/04 (2013.01); F01N 3/20 (2013.01); F01N 3/2066 (2013.01); F01N 9/00 (2013.01); F02D 17/02 (2013.01); F02D 41/0025 (2013.01); F02D 41/0087 (2013.01); F02D 41/0235 (2013.01); F02D 41/04 (2013.01); F02D 41/065 (2013.01); F02N 11/0814 (2013.01); F01N 2430/02 (2013.01); F01N 2610/00 (2013.01); F01N 2900/08 (2013.01); F02D 2200/021 (2013.01); F02D 2200/0406 (2013.01); F02D 2200/08 (2013.01); F02D 2200/101 (2013.01); Y02T 10/24 (2013.01); Y02T 10/47 (2013.01);
Abstract
Methods and systems are provided for injecting water during an engine cylinder deactivation event so as to reduce an exhaust catalyst regeneration requirement following the cylinder deactivation. In one example, water is injected at one or more deactivated engine cylinders to reduce oxidation of the exhaust catalyst. Then, during engine cylinder reactivation, a degree of richness of a combustion air-to-fuel ratio may be reduced to decrease fuel penalty to the engine while reducing NOx emission.