HONEYCOMB STRUCTURE - NGK INSULATORS LTD

Title:

HONEYCOMB STRUCTURE

Document Type and Number:

WIPO Patent Application WO/2007/083711

Kind Code:

A1

Abstract:

A honeycomb structure which is useful as a capturing filter for exhaust gas, especially as a DPF for capturing particulate substances in exhaust gas from a diesel engine, and which can prevent effectively occurrence of such defects as cracking due to thermal stress during use and regeneration. The honeycomb structure comprises a honeycomb segment bonded body where a plurality of honeycomb segments are bonded integrally at the mutual bonding faces through a bonding material layers, and an outer circumferential coat layer covering the outer circumferential surface of the honeycomb segment bonded body, and has such a structure that a plurality of cells becoming the channels of fluid are arranged in parallel to each other in the direction of central axis. The honeycomb structure is characterized in that a bonded cross portion where two or more bonding material layers intersect has a thermal capacity relatively lower than that at other bonded portions, i.e. the bonding material layers other than the bonded cross portion.

Inventors:

MIZUTANI TAKASHI (JP)

Application Number:

PCT/JP2007/050717

Publication Date:

July 26, 2007

Filing Date:

January 18, 2007

Export Citation:

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Assignee:

NGK INSULATORS LTD (JP)
MIZUTANI TAKASHI (JP)

International Classes:

B01D39/20; B01D46/00; B01D53/86; B01J32/00; B01J35/04; F01N3/02

Domestic Patent References:

WO2003084640A1

2003-10-16

Foreign References:

JPH02117033U	1990-09-19
JP2001170426A	2001-06-26
JP2004262669A	2004-09-24

Other References: