| Patent application number | Description | Published |
|---|
| 20080274324 | HONEYCOMB STRUCTURE - There is provided a honeycomb structure which is useful as a trapping filter for exhaust gas, especially as a DPF for a diesel engine and capable of effectively inhibiting defects such as a crack due to thermal stress from being generated upon use and regeneration. The honeycomb structure is provided with a honeycomb segment bonded body obtained by unitarily bonding a plurality of honeycomb segments at bonded faces via a bonding material layer and the outer periphery coat layer and has a structure having a plurality of cells functioning as fluid passages disposed in parallel with one another in a direction of a central axis. The honeycomb structure is characterized in that a bonding cross portion where two or more bonding material layers cross has a smaller thermal capacity than those of bonding portions other than the bonding cross portion. | 11-06-2008 |
| 20090205303 | PLUGGED HONEYCOMB STRUCTURE - There is disclosed a plugged honeycomb structure having a PM collection capability which is not easily deteriorated even when used as a DPF in an exhaust system where broken metal pieces, sputter depositions and the like flow as loads. The plugged honeycomb structure includes plugging portions having depths of 2.0 mm or more and 12 mm or less, plug punch out strengths per unit length in a range of 3 MPa/mm or more and 50 MPa/mm or less, hydraulic diameters of 0.95 mm or more and less than 2.20 mm and porosities of 40% or more and 80% or less. | 08-20-2009 |
| 20090246455 | HONEYCOMB STRUCTURE - The honeycomb structure comprising a plurality of columnar honeycomb segments in which two kinds of plural through-holes different in end face area are formed side by side by being surrounded by partition walls, each honeycomb segment having, at one end face, an inlet side of high opening ratio, wherein through-holes of smaller end face area are plugged and, at other end face, an outlet side of low opening ratio and wherein through-holes of larger end face area are plugged, the plurality of honeycomb segments being bonded to each other via a bonding material in the longitudinal direction of each honeycomb segment. The bonded width of the bonding material is larger at the inlet side end face of the honeycomb structure than at the outlet side end face is presented. | 10-01-2009 |
| 20090246457 | HONEYCOMB STRUCTURE - A honeycomb structure in which the inlet cells have a larger opening ratio than the outlet cells and the generation of cracks is suppressed effectively. | 10-01-2009 |
| 20090247396 | CATALYST-CARRYING FILTER - A catalyst-carrying filter has a partition wall that includes a gas-inflow-side layer and a gas-outflow-side layer. One open end and the other open end of a plurality of cells are alternately plugged by plugging sections. The gas-inflow-side layer of the partition wall includes a PM removal catalyst layer that supports or is coated with an oxidizing catalyst for promoting oxidation of particulate matter contained in exhaust gas. The gas-outflow-side layer of the partition wall includes a PM collection layer that has a small average pore size so as to collect particulate matter, and a gas purification catalyst layer that supports or is coated with a gas purification catalyst that promotes oxidation of unburnt gas. | 10-01-2009 |
| 20090247399 | CATALYTIC DIESEL PARTICULATE FILTER AND MANUFACTURING METHOD THEREOF - There are provided a catalytic diesel particulate filter that is arranged in an exhaust system of a diesel engine and includes a catalyst that burns a particulate matter contained in an exhaust gas from the diesel engine, wherein the catalyst is configured in such a manner that a ceria based catalyst coat layer | 10-01-2009 |
| 20090269548 | HONEYCOMB SEGMENT AND HONEYCOMB STRUCTURE - Formation is performed so that an opening percentage of the first cells | 10-29-2009 |
| 20090280292 | PLUGGED HONEYCOMB STRUCTURE - A plugged honeycomb structure includes: a honeycomb structure having porous partition walls separating and forming a plurality of cells communicating between an inlet end face on an inlet side of a fluid and an outlet end face on an outlet side of the fluid, and plugging portions for plugging an opening portion of each of predetermined cells on the inlet end face and an opening portion of each of the other cells on the outlet end face. There, 1.5% or more of the plugging portions plugging the opening portions of the predetermined cells on the inlet end face have a depressed pit on the end face on the inlet end face side. | 11-12-2009 |
| 20090324455 | HONEYCOMB FILTER AND METHOD FOR MANUFACTURING THE SAME - A honeycomb filter including a catalyst-carrying article, and an outer peripheral coat layer disposed on an outer peripheral face of the catalyst carrying article, wherein an amount of the catalyst loaded in the outer peripheral coat layer at a position 50 μm or more apart from a boundary face between the catalyst-carrying article and the outer peripheral coat layer is 5 mass % or less when a measurement piece having a cross section where a boundary portion between the catalyst-carrying article and the outer peripheral coat layer can be observed and being obtained by embedding a resin in the boundary portion in the cross section is measured by an energy dispersive fluorescent X-ray analysis using a scanning electron microscope. | 12-31-2009 |
| 20100151187 | Honeycomb structure - A honeycomb structure includes a honeycomb segment joined body comprising a plurality of honeycomb segments unitarily joined at joint faces thereof by means of a bonding material layer, and an outer peripheral coat layer, the honeycomb structure having a plurality of cells functioning as fluid passages disposed in parallel with one another in a central axis direction. A thickness of the outer peripheral coat layer at least at one portion of the portions (portions on end faces) located on end faces in longitudinal direction of the bonding material layer in a cross-section in a direction perpendicular to the central axis direction is larger than an average thickness of the portions other than the portions on end faces. | 06-17-2010 |
| 20100184589 | HONEYCOMB CATALYTIC ARTICLE - There is provided a honeycomb structure where a catalyst is loaded on surfaces of inner pores of the surface layer and on a surface of the surface layer; a relation between a catalyst area proportion A of the catalyst to a gap area proportion B of a gap in a cross-section of the surface layer on the inlet side is 1% | 07-22-2010 |
| 20100257830 | PARTIALLY PLUG-LESS DPF - There is provided a ceramic filter capable of controlling extraordinary rise of the internal temperature upon regeneration by reducing an amount of deposited soot (particulates) by increasing a passage flow rate in the through-cells and realizing improvement of the regeneration limit and correspondence of PM emission and a method for manufacturing a ceramic filter. A plurality of circulation holes | 10-14-2010 |
