HONEYCOMB STRUCTURAL BODY, METHOD OF MANUFACTURING THE STRUCTURAL BODY, AND EXHAUST EMISSION CONTROL SYSTEM

Title:

HONEYCOMB STRUCTURAL BODY, METHOD OF MANUFACTURING THE STRUCTURAL BODY, AND EXHAUST EMISSION CONTROL SYSTEM

Document Type and Number:

WIPO Patent Application WO/2003/076047

Kind Code:

A1

Abstract:

A honeycomb structural body (1), a method of manufacturing the structural body, and an exhaust emission control system having the honeycomb structural body, the honeycomb structural body (1) comprising an outer peripheral wall (7), partition walls (2) disposed on the inside of the outer peripheral wall, and a plurality of flow holes (3) partitioned by the partition walls (2), passed through in axial direction, and having a generally rectangular cross section to the axial direction, characterized in that reinforcement parts (72) are installed at parts of the outer peripheral wall (7) of the honeycomb structural body (1), the area of the reinforcement parts (72) in the cross section of the honeycomb structural body (1) involves at least an area of the reinforcement parts in the cross section between a point on the outer peripheral wall in the direction of 40°from the cross sectional center (9) of the structural body (1) relative to the longitudinal direction of the partition wall (2a) or (2b) and a point on the outer peripheral wall in the direction of 50° and comes within an area between a point on the outer peripheral wall in the direction of 30°to a point on the peripheral wall in the direction of 60°, and the averaged thickness of the reinforcement parts (72) in the direction of the cross sectional center (9) is 1 to 10 mm, whereby the honey comb structural body having an excellent mechanical strength and less pressure loss, the method of manufacturing the structural body, and the exhaust emission control system having the honeycomb structural body can be provided.

Inventors:

KASAI YOSHIYUKI (JP)
MATSUBARA REIJI (JP)

Application Number:

PCT/JP2003/002738

Publication Date:

September 18, 2003

Filing Date:

March 07, 2003

Export Citation:

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Assignee:

NGK INSULATORS LTD (JP)
KASAI YOSHIYUKI (JP)
MATSUBARA REIJI (JP)

International Classes:

B01D39/20; B01D46/00; B01D46/24; F01N3/02; B01D46/42; B01D53/86; B01J33/00; B01J35/04; B28B3/26; C04B38/00; F01N3/021; F01N3/022; F01N3/035; (IPC1-7): B01D39/20; B01D46/00; F01N3/02

Foreign References:

US5514446A	1996-05-07
US5629067A	1997-05-13
US5853459A	1998-12-29
JPH0243955A	1990-02-14
JP2003026488A	2003-01-29

Other References: