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:
Nov. 30, 2010
Filed:
Sep. 11, 2007
Applicants:
Qi MA, Farmington Hills, MI (US);
Julian R. Verdejo, Farmington, MI (US);
Nicholas John Kalweit, Calumet City, IL (US);
Inventors:
Qi Ma, Farmington Hills, MI (US);
Julian R. Verdejo, Farmington, MI (US);
Nicholas John Kalweit, Calumet City, IL (US);
Assignee:
GM Global Technology Operations, Inc., Detroit, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01K 7/16 (2006.01); G01K 13/02 (2006.01); G06F 17/00 (2006.01); G06F 13/00 (2006.01); F01N 3/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
An internal combustion engine includes an exhaust gas feedstream flowing past a gas sensing device disposed therein. The gas sensor includes an integrated electrical heating element which provides a resistance indicative of its temperature. An unknown input observer is used to determine the exhaust gas feedstream temperature based on the heating element temperature.