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:
Oct. 09, 2012
Filed:
Apr. 30, 2009
John N. Chi, Columbus, IN (US);
Joe V. Hill, Middlesbrough, GB;
Joan M. Wills, Nashville, IN (US);
Lisa A. Farrell, Columbus, IN (US);
Timothy R. Frazier, Columbus, IN (US);
Hasan Mohammed, Bloomington, IN (US);
John N. Chi, Columbus, IN (US);
Joe V. Hill, Middlesbrough, GB;
Joan M. Wills, Nashville, IN (US);
Lisa A. Farrell, Columbus, IN (US);
Timothy R. Frazier, Columbus, IN (US);
Hasan Mohammed, Bloomington, IN (US);
Cummins IP, Inc., Minneapolis, MN (US);
Abstract
Various embodiments of an apparatus, system, and method are disclosed for controlling NOconversion in a selective catalytic reduction (SCR) system. According to one representative embodiment, an apparatus includes a duty cycle factor module and a NOconversion mode selection module. The duty cycle factor module is configured to determine a duty cycle factor of an internal combustion engine where the duty cycle factor represents predicted driving conditions of a vehicle in which the internal combustion engine is housed. The NOconversion mode selection module is configured to command NOconversion in the SCR system according to a first NOconversion mode if the duty cycle factor is within a duty cycle factor range and according to a second NOconversion mode if the duty cycle factor is not within the duty cycle factor range.