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:
Apr. 03, 2007
Filed:
Jan. 24, 2006
Amy Berris, Royal Oak, MI (US);
Jun LI, Canton, MI (US);
Mohinder Singh Chattha, Northville, MI (US);
William Lewis Henderson Watkins, Toledo, OH (US);
Amy Berris, Royal Oak, MI (US);
Jun Li, Canton, MI (US);
Mohinder Singh Chattha, Northville, MI (US);
William Lewis Henderson Watkins, Toledo, OH (US);
Ford Global Technologies, LLC, Dearborn, MI (US);
Abstract
An automobile exhaust system includes a catalytic converter and a modified NOx trap wit improved sulfur tolerance. Sulfur oxide has a deleterious effect on the performance of nitrogen oxide traps. In the modified NOx trap, a sulfur oxide trap is integrated with a nitrogen oxide trap by coating the catalyst contained within a nitrogen oxide trap with a mixed oxide layer of calcium oxide and magnesium oxide. The NOx trap is regenerated by heating at elevated temperature for a short time period.