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:
Oct. 27, 2015
Filed:
Jul. 14, 2009
Campbell R. Mcconnell, Vancouver, CA;
Paul Sebright Towgood, Vancouver, CA;
Campbell R. McConnell, Vancouver, CA;
Paul Sebright Towgood, Vancouver, CA;
WESTPORT POWER INC., Vancouver, CA;
Abstract
A method of regenerating a diesel particulate filter involves directing an exhaust stream from a combustion engine through the diesel particulate filter and selectively introducing a syngas stream at least periodically into the diesel particulate filter to regenerate it. The syngas stream is introduced at a first average flow rate during an initial regeneration stage and at a second average flow rate during a subsequent regeneration stage. In preferred embodiments the flow rate is varied in order to reduce temperature spikes and/or the rate at which CO slips through the filter during regeneration. In certain embodiments the first average flow rate is lower than the second average flow rate.