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. 17, 2009
Filed:
Jun. 29, 2006
Thomas W. Silvis, Flushing, MI (US);
Thomas W. Silvis, Flushing, MI (US);
Delphi Technologies, Inc., Troy, MI (US);
Abstract
A motor vehicle exhaust aftertreatment system includes an exhaust conduit that includes a NOadsorber, a particulate filter, a reformer for generating reformate containing hydrogen and carbon monoxide from a fuel source, a reformate conduit, and an oxygen sensor. In response to a pressure drop through the particulate filter attaining a threshold value, reformate is introduced under selected controlled flow conditions into the exhaust conduit and caused to undergo combustion. The resulting exotherm maintains the temperature within the particulate filter within a selected range that is effective to cause oxidation and removal of soot from the particulate filter. Introduction of reformate into the exhaust conduit is discontinued when the pressure drop through the particulate filter is decreased to a selected value.