A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
To provide a honeycomb filter that is high in performance in capturing a PM and therefore can suppress pressure loss.SOLUTION: A honeycomb filter 10 is configured to comprise an exhaust gas introduction cell 12 whose end part at an inlet side is opened and whose end part at an outlet side is plugged, and an exhaust gas exhaust cell 11 whose end part at an outlet side is opened and whose end part at an inlet side is plugged, where a thickness of a cell bulkhead 14 is 0.1-0.25 mm. On a cross section which is perpendicular to a longitudinal direction of the honeycomb filter, when an average pitch width of a closed cell in a first direction D1 is defined as X1(mm) and an average value of a pitch width of the exhaust gas introduction cell 12 and an average value of pitch width of the exhaust gas exhaust cell 11 in the first direction D1 is defined as X2(mm), the average pitch width X1 of the closed cell is 0.5 mm or more and the following formula (1) is satisfied: -2X1+3≤X2/X1≤-20X1+18 (1).SELECTED DRAWING: Figure 2B
【課題】ＰＭの捕集性能が高く、圧力損失を低く抑えることができるハニカムフィルタを提供する。【解決手段】入口側の端部が開口され、出口側の端部が目封止された排ガス導入セル１２と、出口側の端部が開口され、入口側の端部が目封止された排ガス排出セル１１とを備えてなるハニカムフィルタ１０であって、セル隔壁１４の厚さは、０．１～０．２５ｍｍであり、ハニカムフィルタの長手方向に垂直な断面において、第１方向Ｄ１における閉鎖セルの平均ピッチ幅をＸ１（ｍｍ）とし、第１方向Ｄ１における排ガス導入セル１２のピッチ幅及び排ガス排出セル１１のピッチ幅の平均値をＸ２（ｍｍ）とすると、上記閉鎖セルの平均ピッチ幅Ｘ１が０．５ｍｍ以上であり、下記（１）式を満たすことを特徴とするハニカムフィルタ。－２Ｘ１＋３≦Ｘ２／Ｘ１≦－２０Ｘ１＋１８・・・（１）【選択図】図２Ｂ
To provide a honeycomb filter that is high in performance in capturing a PM and therefore can suppress pressure loss.SOLUTION: A honeycomb filter 10 is configured to comprise an exhaust gas introduction cell 12 whose end part at an inlet side is opened and whose end part at an outlet side is plugged, and an exhaust gas exhaust cell 11 whose end part at an outlet side is opened and whose end part at an inlet side is plugged, where a thickness of a cell bulkhead 14 is 0.1-0.25 mm. On a cross section which is perpendicular to a longitudinal direction of the honeycomb filter, when an average pitch width of a closed cell in a first direction D1 is defined as X1(mm) and an average value of a pitch width of the exhaust gas introduction cell 12 and an average value of pitch width of the exhaust gas exhaust cell 11 in the first direction D1 is defined as X2(mm), the average pitch width X1 of the closed cell is 0.5 mm or more and the following formula (1) is satisfied: -2X1+3≤X2/X1≤-20X1+18 (1).SELECTED DRAWING: Figure 2B
【課題】ＰＭの捕集性能が高く、圧力損失を低く抑えることができるハニカムフィルタを提供する。【解決手段】入口側の端部が開口され、出口側の端部が目封止された排ガス導入セル１２と、出口側の端部が開口され、入口側の端部が目封止された排ガス排出セル１１とを備えてなるハニカムフィルタ１０であって、セル隔壁１４の厚さは、０．１～０．２５ｍｍであり、ハニカムフィルタの長手方向に垂直な断面において、第１方向Ｄ１における閉鎖セルの平均ピッチ幅をＸ１（ｍｍ）とし、第１方向Ｄ１における排ガス導入セル１２のピッチ幅及び排ガス排出セル１１のピッチ幅の平均値をＸ２（ｍｍ）とすると、上記閉鎖セルの平均ピッチ幅Ｘ１が０．５ｍｍ以上であり、下記（１）式を満たすことを特徴とするハニカムフィルタ。－２Ｘ１＋３≦Ｘ２／Ｘ１≦－２０Ｘ１＋１８・・・（１）【選択図】図２Ｂ
HONEYCOMB FILTER
ハニカムフィルタ
MATSUKAWA YOSUKE (author)
2024-10-04
Patent
Electronic Resource
Japanese