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:
Apr. 05, 2016
Filed:
Sep. 27, 2012
Continental Controls Corporation, San Diego, CA (US);
David Gordon Fisher, Carlsbad, CA (US);
Richard Ross Fisher, San Marcos, CA (US);
Galina Laur, San Diego, CA (US);
Hillary H. Grimes, III, San Diego, CA (US);
Kristian W. Yates, Valley Center, CA (US);
John A. Zahir, San Diego, CA (US);
John C. Vronay, La Jolla, CA (US);
CONTINENTAL CONTROLS CORPORATION, San Diego, CA (US);
Abstract
Systems and methods for continuous automatic adjustment of a control set point of an air-fuel ratio controller of a rich burn engine so as to maintain emissions within a desired range. In an embodiment, a NOx sensor is placed in the exhaust outlet from an exhaust catalyst and the NOx exhaust sensor output is continuously monitored while adjusting the control set point between rich and lean in order to minimize the output from the NOx sensor. Corrections may be continuously made to the set point during operation of the engine to compensate for changes in environmental conditions, engine loads, and other factors.