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:
Jun. 17, 2014
Filed:
Sep. 30, 2010
Linsong Guo, Columbus, IN (US);
Ryan Edgecomb, Columbus, IN (US);
Robert Kern, Indianapolis, IN (US);
LK Hwang, Columbus, IN (US);
Timothy R. Frazier, Columbus, IN (US);
Neal W. Currier, Columbus, IN (US);
Linsong Guo, Columbus, IN (US);
Ryan Edgecomb, Columbus, IN (US);
Robert Kern, Indianapolis, IN (US);
Lk Hwang, Columbus, IN (US);
Timothy R. Frazier, Columbus, IN (US);
Neal W. Currier, Columbus, IN (US);
Cummins Inc., Columbus, IN (US);
Abstract
A system is described for producing an elevated exhaust temperature and reduced NOoutput for an engine. The system includes an internal combustion engine having a common rail fuel system, an exhaust pressure modulation device for the internal combustion engine, and a controller structured to functionally execute operations for elevating the exhaust temperature and reducing the NOoutput. The controller determines a desired engine outlet exhaust temperature, an engine speed, and an engine load. In response to the desired engine outlet exhaust gas temperature, the engine speed, and the engine load, the controller determines an exhaust pressure increase command and a fuel injection command including at least one post-injection event. The common rail fuel system is responsive to the fuel injection command, and the exhaust pressure modulation device is responsive to the exhaust pressure increase command.