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. 10, 2014
Filed:
Sep. 08, 2010
Thompson M. Sloane, Kewadin, MI (US);
Wei LI, Troy, MI (US);
David J. Cleary, Shanghai, CN;
Kevin L. Perry, Fraser, MI (US);
Michael B. Viola, Macomb Township, MI (US);
David R. Monroe, Telluride, CO (US);
Thompson M. Sloane, Kewadin, MI (US);
Wei Li, Troy, MI (US);
David J. Cleary, Shanghai, CN;
Kevin L. Perry, Fraser, MI (US);
Michael B. Viola, Macomb Township, MI (US);
David R. Monroe, Telluride, CO (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A powertrain includes an internal combustion engine having a combustion chamber and an aftertreatment system. A method for reducing NOx emissions in the powertrain includes monitoring an actual exhaust gas feedstream ratio of NOto NO, monitoring a desired exhaust gas feedstream ratio of NOto NO, comparing the actual and the desired exhaust gas feedstream ratios of NOto NO, and selectively initiating a NOgeneration cycle based upon the comparison of the actual and the desired exhaust gas feedstream ratios of NOto NO comprising injecting fuel mass into the combustion chamber after a primary combustion event.