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:
Jun. 20, 2006
Filed:
Feb. 16, 2005
Haoran HU, Novi, MI (US);
Subbaraya Radhamohan, Novi, MI (US);
Karen Evelyn Bevan, Northville, MI (US);
James Edward Mccarthy, Jr., Canton, MI (US);
Johannes W. Reuter, Ypsilanti, MI (US);
Vishal Singh, Farmington Hills, MI (US);
Haoran Hu, Novi, MI (US);
Subbaraya Radhamohan, Novi, MI (US);
Karen Evelyn Bevan, Northville, MI (US);
James Edward McCarthy, Jr., Canton, MI (US);
Johannes W. Reuter, Ypsilanti, MI (US);
Vishal Singh, Farmington Hills, MI (US);
Eaton Corporation, Cleveland, OH (US);
Abstract
One aspect of the invention relates to a particulate filter useful in treating exhaust from a diesel-power vehicle. The particulate filter comprises filter elements for removing particulate matter and an ammonia SCR catalyst. Ammonia can be produced during regeneration of an NOx adsorbant. The adsorbant can be contained in a separate device upstream of the particulate filter or be incorporated within the particulate filter. Another aspect of the invention relates to a method of cleaning exhaust comprising passing the exhaust over an NOx adsorber to adsorb a portion of NOx from the exhaust; passing the exhaust through a particulate filter to remove particulate matter from the exhaust; and removing a further portion of NOx from the exhaust by reducing it with ammonia over an ammonia SCR catalyst. Preferably, a catalyst contained within the adsorbant provides NOfor continuously regenerating the particulate filter.