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:
May. 30, 2017
Filed:
Sep. 26, 2013
Applicant:
General Electric Company, Schenectady, NY (US);
Inventor:
Maruthi Devarakonda, Waukesha, WI (US);
Assignee:
General Electric Company, Schenectady, NY (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01N 3/00 (2006.01); F01N 11/00 (2006.01); F01N 3/10 (2006.01); F02D 41/14 (2006.01); F01N 9/00 (2006.01);
U.S. Cl.
CPC ...
F01N 11/007 (2013.01); F01N 3/101 (2013.01); F01N 3/106 (2013.01); F01N 9/005 (2013.01); F02D 41/1441 (2013.01); F02D 41/1453 (2013.01); F02D 41/1454 (2013.01); F01N 2550/02 (2013.01); F01N 2560/021 (2013.01); F01N 2560/025 (2013.01); F01N 2900/1402 (2013.01); F02D 2041/1419 (2013.01); F02D 2041/1468 (2013.01); Y02T 10/22 (2013.01); Y02T 10/47 (2013.01);
Abstract
A system for controlling an air/fuel ratio in an engine based on catalyst deactivation includes an NHdetector disposed downstream from the three way catalyst, and a subsystem that compares measured values of NHconcentration with a nominal value of NHconcentration at rich operating conditions. A subsystem adjusts the air/fuel ratio based on the measured value of NHconcentration and estimated CO concentration.