Patent ID: 8092565
Filing Date: 2012-01-10
Classification: B01D,F01N,Y02T,Y10S,Y10T

Abstract:
1. A particulate filter comprising: a filter body including a plurality of filter segments joined to each other by a joining material, each of the filter segments including a plurality of inflow cells each having a closed end on a downstream side in an exhaust-gas flow direction, a plurality of outflow cells each having a closed end on an upstream side in the exhaust-gas flow direction, and a cell wall having communication pores for passage of exhaust gas and defining the inflow cells and the outflow cells; and an outer peripheral coating covering an outer peripheral surface of the filter body, wherein the filter segments include: a first filter segment located in a central region of the particulate filter and designed to form each of the inflow cells to have an opening area approximately equal to that of each of the outflow cells; and a second filer segment located in at least a part of an outer peripheral region of the particulate filter and designed to form each of the inflow cells to have an opening area greater than that of each of the outflow cells.