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:
Jan. 10, 2012
Filed:
Mar. 02, 2009
Hiroshi Yamada, Hiroshima, JP;
Koichiro Harada, Higashihiroshima, JP;
Kenji Suzuki, Komaki, JP;
Kenji Okamoto, Hiroshima, JP;
Akihide Takami, Hiroshima, JP;
Hiroshi Yamada, Hiroshima, JP;
Koichiro Harada, Higashihiroshima, JP;
Kenji Suzuki, Komaki, JP;
Kenji Okamoto, Hiroshima, JP;
Akihide Takami, Hiroshima, JP;
Mazda Motor Corporation, , JP;
Abstract
Disclosed is a particulate filter, which comprises a filter bodyincluding a plurality of filter segments F, Fjoined to each other by a joining material, wherein each of the filter segments includes a plurality of inflow cells each having a closed end on a downstream side in an exhaust-gas flow direction, and a plurality of outflow cells each having a closed end on an upstream side in the exhaust-gas flow direction. The filter segments include a first filter segment located in a central region of the particulate filter and designed to form each of the inflow cells to have an opening area approximately equal to that of each of the outflow cells, and a second filer segment located in at least a part of an outer peripheral region of the particulate filter and designed to form each of the inflow cells to have an opening area greater than that of each of the outflow cells. The present invention can keep the central region of the particulate filter from becoming overheated during a particulate-filter regeneration process, while suppressing a pressure loss.