| 摘要 |
<p>This honeycomb filter is provided with exhaust gas introduction cells having the end on the exhaust gas inlet side opened and the end on the exhaust gas outlet side sealed, and exhaust gas discharge cells having the end on the exhaust gas outlet side opened and the end on the exhaust gas inlet side sealed, and is characterized in that: exhaust gas introduction cells are adjacent, separated by a porous cell wall, around the entire perimeter of the exhaust gas discharge cells; there are two types of exhaust gas introduction cells, first exhaust gas introduction cells, and second exhaust gas introduction cells which have an area of the cross section perpendicular to the cell longitudinal direction greater than that of the first exhaust gas introduction cells; the cell cross sectional area of the exhaust gas discharge cells is greater than or equal to the cell cross sectional area of the second exhaust gas introduction cells; the exhaust gas discharge cells and exhaust gas introduction cells are all polygonal; and, of the edges configuring the cross sectional shape of the first exhaust gas introduction cells, the length of an edge that faces an exhaust gas discharge cell is greater than the length of an edge configuring the cross sectional shape of the second exhaust gas introduction cells that faces the exhaust gas discharge cell.</p> |
