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:
Feb. 03, 2015
Filed:
Oct. 12, 2012
Ford Global Technologies, Llc, Dearborn, MI (US);
Chris Riffle, Brighton, MI (US);
Frank M. Korpics, Belleville, MI (US);
Michiel J. Van Nieuwstadt, Ann Arbor, MI (US);
Devesh Upadhyay, Canton, MI (US);
John Paul Bogema, Flat Rock, MI (US);
Jeff Reich, Plymouth, MI (US);
Ford Global Technologies, LLC, Dearborn, MI (US);
Abstract
Various systems and methods are described for detecting ammonia slip. In one example method, an amount of exhaust gas recirculation is reduced when output from an exhaust gas sensor indicates an increase in nitrogen oxide above a threshold amount. When the sensor output increases above a second threshold while the exhaust gas recirculation is reduced, the sensor output is allocated to nitrogen oxide; and when the sensor output does not increase above a second threshold while the exhaust gas recirculation is reduced, the sensor output is allocated to ammonia.