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:
Dec. 08, 2015
Filed:
Mar. 31, 2014
Cummins Inc., Columbus, IN (US);
Yongjie Zhu, Troy, MI (US);
Vivek A. Sujan, Columbus, IN (US);
Timothy R. Frazier, Columbus, IN (US);
Cummins Inc., Columbus, IN (US);
Abstract
A method and related apparatuses and systems for operating an engine that provides a high level of NOto regenerate particulate matter deposited on a particulate filter. The method includes producing NOin response to a NOexcess capacity value of a NOreduction device. The method optionally includes determining that particulate matter exceeds an enhanced passive regeneration threshold amount before providing a high level of NO. The method optionally includes producing a higher particulate emissions output value to warm the engine exhaust to bring an aftertreatment catalyst to an optimal operating temperature. The method can be implemented with a closed loop feedback controller, which may be configured to reduce particulate matter variation.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile