A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
SEALED HONEYCOMB STRUCTURE
PROBLEM TO BE SOLVED: To provide a sealed honeycomb structure with excellent regeneration efficiency at the regeneration time for burning and removing soot.SOLUTION: The structure comprises: a columnar honeycomb structure part 9 having porous partition walls 1 arranged to surround plural cells 2; and a sealing part 3 for sealing openings of the cells 2. The honeycomb structure part 9 is constituted by an outer peripheral part 7b including an outermost periphery on a cross section orthogonal to a direction in which the cell 2 of the honeycomb structure part 9 extends, and a center part 7a except for the outer peripheral part 7b. The outer peripheral part 7b includes a specific outer peripheral part 7ba, in which a soot pressure loss when a soot accumulation amount is 4 g/L is higher by 15% or more to a soot pressure loss of the center part 7a, and an opening ratio of the outer peripheral part 7b is identical to or not less than that of the center part 7a. On a cross section orthogonal to a direction in which the cell 2 of the honeycomb structure part 9 extends, a ratio of an area occupied by the specific outer peripheral part 7ba to a total area occupied by the outer peripheral part 7b and the center part 7a is 5% or more.SELECTED DRAWING: Figure 2
【課題】ススを燃焼して除去する再生時の再生効率に優れた目封止ハニカム構造体を提供する。【解決手段】複数のセル２を取り囲むように配置された多孔質の隔壁１を有する柱状のハニカム構造部９と、セル２の開口部を目封止する目封止部３と、を備える。ハニカム構造部９は、ハニカム構造部９のセル２の延びる方向に直交する断面における最外周を含む外周部７ｂと、この外周部７ｂを除く中央部７ａとによって構成される。外周部７ｂは、ススの堆積量が４ｇ／Ｌでのスス付き圧損が、中央部７ａのスス付き圧損に対して１５％以上高く、且つ、当該外周部７ｂの開口率が、中央部７ａの開口率と同一又はそれ以上である特定外周部７ｂａを含む。ハニカム構造部９のセル２の延びる方向に直交する断面において、外周部７ｂ及び中央部７ａが占める総面積に対して、特定外周部７ｂａが占める面積の比率が、５％以上である。【選択図】図２
SEALED HONEYCOMB STRUCTURE
PROBLEM TO BE SOLVED: To provide a sealed honeycomb structure with excellent regeneration efficiency at the regeneration time for burning and removing soot.SOLUTION: The structure comprises: a columnar honeycomb structure part 9 having porous partition walls 1 arranged to surround plural cells 2; and a sealing part 3 for sealing openings of the cells 2. The honeycomb structure part 9 is constituted by an outer peripheral part 7b including an outermost periphery on a cross section orthogonal to a direction in which the cell 2 of the honeycomb structure part 9 extends, and a center part 7a except for the outer peripheral part 7b. The outer peripheral part 7b includes a specific outer peripheral part 7ba, in which a soot pressure loss when a soot accumulation amount is 4 g/L is higher by 15% or more to a soot pressure loss of the center part 7a, and an opening ratio of the outer peripheral part 7b is identical to or not less than that of the center part 7a. On a cross section orthogonal to a direction in which the cell 2 of the honeycomb structure part 9 extends, a ratio of an area occupied by the specific outer peripheral part 7ba to a total area occupied by the outer peripheral part 7b and the center part 7a is 5% or more.SELECTED DRAWING: Figure 2
【課題】ススを燃焼して除去する再生時の再生効率に優れた目封止ハニカム構造体を提供する。【解決手段】複数のセル２を取り囲むように配置された多孔質の隔壁１を有する柱状のハニカム構造部９と、セル２の開口部を目封止する目封止部３と、を備える。ハニカム構造部９は、ハニカム構造部９のセル２の延びる方向に直交する断面における最外周を含む外周部７ｂと、この外周部７ｂを除く中央部７ａとによって構成される。外周部７ｂは、ススの堆積量が４ｇ／Ｌでのスス付き圧損が、中央部７ａのスス付き圧損に対して１５％以上高く、且つ、当該外周部７ｂの開口率が、中央部７ａの開口率と同一又はそれ以上である特定外周部７ｂａを含む。ハニカム構造部９のセル２の延びる方向に直交する断面において、外周部７ｂ及び中央部７ａが占める総面積に対して、特定外周部７ｂａが占める面積の比率が、５％以上である。【選択図】図２
SEALED HONEYCOMB STRUCTURE
目封止ハニカム構造体
MIYAIRI YUKIO (author) / MIURA KAZUTO (author) / IIDA TOMOHIRO (author) / AOKI TAKASHI (author) / YASUI OSAMU (author)
2018-04-26
Patent
Electronic Resource
Japanese