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:
Feb. 08, 2022
Filed:
Apr. 19, 2021
Applicant:
Transportation Ip Holdings, Llc, Norwalk, CT (US);
Inventors:
David Zielinski, Erie, PA (US);
Shishir Tiwari, Buffalo Grove, IL (US);
James Robert Mischler, Erie, PA (US);
Michael Mangus, Raleigh, NC (US);
Matthew Hart, Erie, PA (US);
Assignee:
TRANSPORTATION IP HOLDINGS, LLC, Norwalk, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01N 3/00 (2006.01); F01N 3/08 (2006.01); F02D 41/02 (2006.01); F02D 41/14 (2006.01); F02D 41/22 (2006.01);
U.S. Cl.
CPC ...
F01N 3/0842 (2013.01); F02D 41/0275 (2013.01); F02D 41/148 (2013.01); F02D 41/1441 (2013.01); F02D 41/1456 (2013.01); F02D 41/1474 (2013.01); F02D 41/221 (2013.01);
Abstract
Various methods and systems are provided for controlling emissions. In one example, a controller is configured to respond to a sensed exhaust oxygen concentration by changing a fuel injection timing to maintain particulate matter (PM) within a range, and then adjusting an exhaust gas recirculation (EGR) amount based on NOx sensor output and based on the change in fuel injection timing.