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:
Sep. 23, 2003
Filed:
Dec. 14, 2001
Applicant:
Inventors:
Gopichandra Surnilla, West Bloomfield, MI (US);
Grant Alan Ingram, West Lafayette, IN (US);
Assignee:
Ford Global Technologies, LLC, Dearborn, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01N 3/00 ;
U.S. Cl.
CPC ...
F01N 3/00 ;
Abstract
A method for estimating the amount of NO stored in a lean NO trap. The method includes determining a change in the oxygen concentration between an exhaust air/fuel ratio entering the lean NO trap and exiting the lean NO trap to determine the amount of NO absorbed in the trap and correcting such determination for water gas shift reaction effects in such change in oxygen concentration determination.