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. 25, 2007
Filed:
Jul. 26, 2005
John M. Bailey, Dunlap, IL (US);
Marianne F. Waldman, Legal Representative, Brimfield, IL (US);
John M. Bailey, Dunlap, IL (US);
Marianne F. Waldman, legal representative, Brimfield, IL (US);
Illinois Valley Holding Company, Dunlap, IL (US);
Abstract
An apparatus and method for filtering particulate from an internal combustion engine by use of monolithic particulate trap systems having porous walls (). The porous walls () filter the particulate. The filtered particulate on inner surfaces of the porous walls is periodically removed or regenerated via back flow of previously filtered exhaust gas. The back flow is caused by creating a pressure difference across the porous walls. The back flow of the previously filtered exhaust gas is simultaneously or sequentially coupled with high velocity through flow of exhaust gas in the channels. In addition, the particulate trap system can be an adsorber-catalyst particulate trap system for filtering particulate and reducing NOx via an adsorber-catalyst trap systems to achieve the EPA 2007 standards.