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. 21, 2014
Filed:
May. 10, 2012
Janean E. Kowalkowski, Northville, MI (US);
Robert J. Sutschek, South Lyon, MI (US);
John Coppola, Highland, MI (US);
Janean E. Kowalkowski, Northville, MI (US);
Robert J. Sutschek, South Lyon, MI (US);
John Coppola, Highland, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
An exhaust gas treatment system for an internal combustion engine is provided having an exhaust gas conduit, a diesel exhaust fluid ('DEF') source, a selective catalytic reduction ('SCR') device, a NOsensor, and a control module. The DEF source supplies a DEF having a quality factor. The NOsensor is in fluid communication with the exhaust gas conduit. The NOsensor is located downstream of the SCR device and is configured for detecting a NOconcentration value. The control module is in communication with the DEF source and the NOsensor. The control module stores a diagnostic adaptation factor and an expected NOvalue. The control module includes a dosing module for determining a controls adaptation factor that is based on a deviation between the NOconcentration value and the expected NOvalue. The diagnostic adaptation factor is selectively updated with the controls adaptation factor.