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:
Oct. 06, 2015
Filed:
Oct. 25, 2012
Applicant:
GM Global Technology Operations Llc, Detroit, MI (US);
Inventors:
Chad E. Marlett, Plymouth, MI (US);
Michele Bastianelli, Ancona, IT;
Assignee:
GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02D 41/00 (2006.01); F01N 9/00 (2006.01); G01N 33/00 (2006.01);
U.S. Cl.
CPC ...
F01N 9/00 (2013.01); F01N 2560/025 (2013.01); F01N 2900/1628 (2013.01); Y02T 10/47 (2013.01);
Abstract
A method for adjusting an oxygen sensor measurement within an exhaust gas feedstream output from an internal combustion engine based on humidity includes monitoring relative humidity of ambient air obtained from a humidity sensor. Specific humidity at the oxygen sensor is modeled based on the relative humidity. The oxygen sensor measurement is adjusted based on the modeled specific humidity at the oxygen sensor.