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:
Aug. 30, 2016
Filed:
Apr. 09, 2013
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);
David Robert Nader, Farmington Hills, 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 exhaust system with two NOx sensors uses transient responses of the NOx sensors to allocate tailpipe NOx sensor output to NOx and NHlevels therein. An ammonia slip detection counter with gains is included that determines a probability of NOx and NHbased on the measured sensor activities that are further processed by a controller to adjust one or more parameters based on the allocation and changes of sensor output.