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. 15, 2013
Filed:
Feb. 24, 2011
Karin Gerlach, Eningen u. A., DE;
Stefan Tudyka, Neusaess, DE;
Jochen Linhart, Schwaikheim, DE;
Andreas Franz, Ludwigsburg, DE;
Karin Gerlach, Eningen u. A., DE;
Stefan Tudyka, Neusaess, DE;
Jochen Linhart, Schwaikheim, DE;
Andreas Franz, Ludwigsburg, DE;
Mann+Hummel GmbH, Ludwigsburg, DE;
Abstract
A method of manufacturing a ceramic diesel particle filter (DPF) and a DPF manufactured by the method, the DPF having a ceramic filter body () including gas channels () with planar and porous filter segments (), which are provided for the exhaust gas stream () to flow through them transversely to the face of the filter segments (). The filter body () is formed by sintering at least one ceramic-impregnated fiber web () in a firing step under heat such that fibers () of the fiber material are burned off and the ceramic material () is sintered together to form the porous filter segment () between its two surfaces (). At least one fiber web () is corrugated to form the gas channels () and rolled up to form the filter body (), and the cross section of at least a portion of the gas channels () changes from an inlet end () to a discharge end ().