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. 19, 2021
Filed:
May. 09, 2018
Applicant:
Ford Global Technologies, Llc, Dearborn, MI (US);
Inventors:
John Rollinger, Troy, MI (US);
Douglas Martin, Canton, MI (US);
Vincent Martinez, Royal Oak, MI (US);
Assignee:
Ford Global Technologies, LLC, Dearborn, MI (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F01N 3/023 (2006.01); F02D 41/02 (2006.01); F01N 3/035 (2006.01); F01N 3/10 (2006.01); F01N 9/00 (2006.01); F01N 13/00 (2010.01);
U.S. Cl.
CPC ...
F01N 3/0234 (2013.01); F01N 3/035 (2013.01); F01N 3/101 (2013.01); F01N 9/002 (2013.01); F01N 13/009 (2014.06); F02D 41/029 (2013.01); F01N 2560/05 (2013.01);
Abstract
Methods and systems are provided for heating an exhaust particulate filter (PF) to enable filter generation. In one example, a method may include adjusting engine air fuel ratio and injecting secondary air flow upstream of the PF to increase PF temperature. The level of engine air fuel ratio adjustment and the amount of secondary air injection upstream of the PF may be adjusted to account for enrichment induced cooling at a three-way catalyst (TWC) positioned upstream of the PF.