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. 05, 2008
Filed:
Apr. 27, 2006
Applicants:
Paul Laing, Canton, MI (US);
Yisun Chang, Ann Arbor, MI (US);
Robert Hammerle, Franklin, MI (US);
Inventors:
Assignee:
Ford Global Technologies LLC, Dearborn, MI (US);
Primary Examiner:
Int. Cl.
CPC ...
F01N 3/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
In an apparatus having an internal combustion engine and a catalytic device for treating NOemissions from the internal combustion engine, a method of operating the engine comprising operating the engine for a first interval in such a manner as to store and reduce NOemissions in the catalytic device thereby accumulating stored sulfur in the catalytic device, and operating the engine for a second interval in such a manner as to remove a portion of the stored sulfur from the catalytic device and to leave a substantial portion of stored sulfur in the catalytic device.