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:
Dec. 30, 2014
Filed:
Feb. 23, 2012
Kevin Andrew Gady, Ypsilanti, MI (US);
Joshua Clifford Bedford, Farmington Hills, MI (US);
Kevin Andrew Gady, Ypsilanti, MI (US);
Joshua Clifford Bedford, Farmington Hills, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
An exhaust system is provided. The exhaust system includes a first sensor that senses a level of nitrous oxide (NOx) in exhaust gas and generates a first sensor signal. A second sensor senses a level of ammonia (NH3) in the exhaust gas and generates a second sensor signal. A control module receives the first sensor signal and the second sensor signal, determines a desired reductant dosage based on the first sensor signal and the second sensor signal, and generates an injector control signal based on the desired reductant dosage.