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. 16, 2021
Filed:
May. 07, 2019
Applicant:
Ford Global Technologies, Llc, Dearborn, MI (US);
Inventors:
Stephen Magner, Farmington Hills, MI (US);
Mario Santillo, Canton, MI (US);
Mrdjan Jankovic, Birmingham, MI (US);
Assignee:
Ford Global Technologies, LLC, Dearborn, MI (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F02D 35/00 (2006.01); F01N 3/20 (2006.01); F01N 13/00 (2010.01); F02D 41/14 (2006.01); F02D 41/02 (2006.01);
U.S. Cl.
CPC ...
F02D 35/0015 (2013.01); F01N 3/20 (2013.01); F01N 13/009 (2014.06); F02D 35/0092 (2013.01); F02D 41/0235 (2013.01); F02D 41/1445 (2013.01); F02D 41/1454 (2013.01); F02D 2041/141 (2013.01); F02D 2041/1409 (2013.01);
Abstract
Methods and systems are provided for catalyst control. In one example, a method may modulate a downstream catalyst by applying a square waveform to an outer feedback control loop. A fuel adjustment is performed in accordance with the square waveform to create an air-fuel ratio oscillation at an upstream catalyst brick and at a downstream catalyst brick.