A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
HONEYCOMB STRUCTURE AND MANUFACTURING METHOD OF HONEYCOMB STRUCTURE
To provide a honeycomb structure capable of enhancing a catalytic activity at an early stage when an internal combustion engine is started, and capable of further reducing pressure loss.SOLUTION: A honeycomb structure comprises: a porous cell partition for partitioning and forming a plurality of cells to be flow channels of exhaust gas; an exhaust gas introduction cell whose edge face at an exhaust gas inlet side is opened, and whose edge face at an exhaust gas outlet side is closed; and an exhaust gas discharge cell whose end face at the exhaust gas outlet side is opened, and whose end face at the exhaust gas inlet side is closed. The honeycomb structure is such that: the exhaust gas introduction cell and the exhaust gas discharge cell each comprise an inner region in which a vertical cross-sectional shape in the longitudinal direction of the exhaust gas introduction cell and the exhaust gas discharge cell is fixed, and an end region in which a vertical cross-sectional shape in the longitudinal direction of the exhaust gas introduction cell and the exhaust gas discharge cell is expanded or reduced as coming closer to the end face; and the cell partition comprises ceria-zirconia composite oxide particles and alumina particles.SELECTED DRAWING: Figure 1
【課題】 内燃機関を始動した際に早期に触媒活性を高くすることができ、より圧力損失を低減させることが可能なハニカム構造体を提供する。【解決手段】 排ガスの流路となる複数のセルを区画形成する多孔質のセル隔壁と、排ガス入口側の端面が開口され且つ排ガス出口側の端面が封じられている排ガス導入セルと、排ガス出口側の端面が開口され且つ排ガス入口側の端面が封じられている排ガス排出セルとを備えたハニカム構造体であって、前記排ガス導入セル及び前記排ガス排出セルは、前記排ガス導入セル及び前記排ガス排出セルの長手方向に垂直な断面形状が一定である内部領域と、前記排ガス導入セル及び前記排ガス排出セルの長手方向に垂直な断面形状が端面に近づくに従って拡大又は縮小されている端部領域とからなり、前記セル隔壁は、セリア−ジルコニア複合酸化物粒子及びアルミナ粒子からなることを特徴とするハニカム構造体。【選択図】 図１
HONEYCOMB STRUCTURE AND MANUFACTURING METHOD OF HONEYCOMB STRUCTURE
To provide a honeycomb structure capable of enhancing a catalytic activity at an early stage when an internal combustion engine is started, and capable of further reducing pressure loss.SOLUTION: A honeycomb structure comprises: a porous cell partition for partitioning and forming a plurality of cells to be flow channels of exhaust gas; an exhaust gas introduction cell whose edge face at an exhaust gas inlet side is opened, and whose edge face at an exhaust gas outlet side is closed; and an exhaust gas discharge cell whose end face at the exhaust gas outlet side is opened, and whose end face at the exhaust gas inlet side is closed. The honeycomb structure is such that: the exhaust gas introduction cell and the exhaust gas discharge cell each comprise an inner region in which a vertical cross-sectional shape in the longitudinal direction of the exhaust gas introduction cell and the exhaust gas discharge cell is fixed, and an end region in which a vertical cross-sectional shape in the longitudinal direction of the exhaust gas introduction cell and the exhaust gas discharge cell is expanded or reduced as coming closer to the end face; and the cell partition comprises ceria-zirconia composite oxide particles and alumina particles.SELECTED DRAWING: Figure 1
【課題】 内燃機関を始動した際に早期に触媒活性を高くすることができ、より圧力損失を低減させることが可能なハニカム構造体を提供する。【解決手段】 排ガスの流路となる複数のセルを区画形成する多孔質のセル隔壁と、排ガス入口側の端面が開口され且つ排ガス出口側の端面が封じられている排ガス導入セルと、排ガス出口側の端面が開口され且つ排ガス入口側の端面が封じられている排ガス排出セルとを備えたハニカム構造体であって、前記排ガス導入セル及び前記排ガス排出セルは、前記排ガス導入セル及び前記排ガス排出セルの長手方向に垂直な断面形状が一定である内部領域と、前記排ガス導入セル及び前記排ガス排出セルの長手方向に垂直な断面形状が端面に近づくに従って拡大又は縮小されている端部領域とからなり、前記セル隔壁は、セリア−ジルコニア複合酸化物粒子及びアルミナ粒子からなることを特徴とするハニカム構造体。【選択図】 図１
HONEYCOMB STRUCTURE AND MANUFACTURING METHOD OF HONEYCOMB STRUCTURE
ハニカム構造体及びハニカム構造体の製造方法
GOTO SHINNOSUKE (author) / ONAYA NAOKI (author) / IGARASHI HIROKAZU (author)
2021-03-11
Patent
Electronic Resource
Japanese
IPC:
B01J
Chemische oder physikalische Verfahren, z.B. Katalyse oder Kolloidchemie
,
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY
/
B01D
SEPARATION
,
Trennen
/
C04B
Kalk
,
LIME
/
F01N
GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL
,
Schalldämpfer oder Auspuffvorrichtungen für Gase von Kraft- und Arbeitsmaschinen oder von Kraftmaschinen allgemein
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