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. 09, 2016
Filed:
Mar. 09, 2009
Charles E. Solbrig, Ypsilanti, MI (US);
Ognyan N. Yanakiev, Canton, MI (US);
Charles E. Solbrig, Ypsilanti, MI (US);
Ognyan N. Yanakiev, Canton, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A control system includes an upstream nitrogen oxide (NO) control module that increases an upstream NOlevel based on an initial upstream NOlevel in an exhaust system, and an ammonia (NH) storage condition detection module that detects a NHstorage condition based on a difference in a downstream NOlevel before and after the upstream NOlevel is increased. A method includes increasing an upstream NOlevel based on an initial upstream NOlevel in an exhaust system, and detecting an NHstorage condition based on a difference in a downstream NOlevel before and after the upstream NOlevel is increased.