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:
Jan. 10, 2012
Filed:
Jan. 28, 2009
Kevin L. Perry, Fraser, MI (US);
David J. Cleary, Shanghai, CN;
Kushal Narayanaswamy, Sterling Heights, MI (US);
Paul M. Najt, Bloomfield Hills, MI (US);
Wei LI, Troy, MI (US);
James Donald Smith, Ann Arbor, MI (US);
Chang H Kim, Rochester, MI (US);
Thompson M. Sloane, Oxford, MI (US);
Kevin L. Perry, Fraser, MI (US);
David J. Cleary, Shanghai, CN;
Kushal Narayanaswamy, Sterling Heights, MI (US);
Paul M. Najt, Bloomfield Hills, MI (US);
Wei Li, Troy, MI (US);
James Donald Smith, Ann Arbor, MI (US);
Chang H Kim, Rochester, MI (US);
Thompson M. Sloane, Oxford, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A method for controlling a powertrain includes selectively initiating an ammonia generation cycle, including injecting fuel into a combustion chamber of an engine before a primary combustion event to a calibrated air fuel ratio in a range lean of stoichiometry based upon generation of NOx within the combustion chamber, injecting fuel into the combustion chamber after the primary combustion event based upon an overall air fuel ratio in a range rich of stoichiometry and resulting generation of molecular hydrogen, and utilizing a catalyst device between the engine and a selective catalytic reduction device to produce ammonia.