Abstract: A heating device comprises a heating element having a central area and a peripheral edge. The heating element has a series of slots delimiting a series of longitudinal branches connected to one another by elbows. The central area is made of a first electrically conductive material that is permeable to exhaust gases and has a first relative density. The elbows are located in the peripheral edge and are made of a second electrically conductive material and that has a second relative density greater than the first relative density.

Abstract: The invention relates to a heat exchanger comprising a first free space (7) for a first fluid (3), a thermally conductive wall (11) which, at least locally, delimits said first free space (7), in such a way that an exchange of heat can occur between the first fluid and the thermally conductive wall (11) which is hollow and encloses a material (13) for storing thermal energy by accumulation of latent heat, by heat exchange with at least the first fluid. The first free space (7) is divided into at least two separated channels (7a, 7b) in which two streams of the first fluid (3) can circulate at the same time but separately, the thermally conductive wall (11) which encloses the thermal energy storage material (13) being interposed between the two channels (7a, 7b).

Abstract: An electrical heater and method for heating a catalyst. The heater includes a honeycomb body having intersecting walls forming channels extending along a longitudinal axis. A plurality of electrically resistive paths are included, each including at least a portion of the plurality of intersecting walls and extending a length across the honeycomb body transverse to the longitudinal axis. A positive electrode and a negative electrode are in electrical communication with each other via the resistive paths. The positive electrode and the negative electrode are operatively positioned to generate a respective flow of current through each resistive path. The lengths of at least two of the resistive paths differ from each other. The resistive paths are configured with respect to the at least one positive electrode and the at least one negative electrode such that the current in each of the resistive paths is substantially equal.

Abstract: An exhaust after treatment system provided in an exhaust passage of an internal combustion engine, comprising an adsorption layer having the function of adsorbing hydrocarbons in the exhaust, a catalyst layer arranged at the same position as the adsorption layer in the direction of flow of exhaust or at the downstream side from the adsorption layer and having an oxidation function of oxidizing the hydrocarbons, and a thermal energy generator generating thermal energy, in the thermal energy generated by the thermal energy generator, the thermal energy supplied to the catalyst layer being made larger than the thermal energy supplied to the adsorption layer.

Abstract: An exhaust gas purification system includes, as an exhaust gas path of an engine to be mounted in a ship, a main path which is in communication with outside, a bypass path which branches off from a halfway portion of the main path, and a combined casing with which both the main path and the bypass path are in communication. A selective catalyst reduction device is accommodated in the combined casing at a location close to the main path. A path-switching member which switches exhaust gas moving direction is placed in a branched portion between the main path and the bypass path. A reducing agent injection body is placed in the main path between the path-switching member and the combined casing.

Abstract: A PCM device (1) is provided for an exhaust system of an internal combustion engine, especially of a motor vehicle. A simplified installation of the PCM device (1), with reduced heat stresses, is achieved through the provision of at least one storage plate (2), which has two plate bodies (3, 4), which follow each other, enclose a storage space (7) filled with heat storage material (18) and have a wave structure (5, 6) each. The wave structure (5) of one plate body (3) extends sloped in relation to the wave structure (6) of the other plate body (4).

Abstract: A device for the purification of polluted waste gas by means of regenerative thermal oxidation. The device has at least two heat-accumulator towers having a common combustion chamber and each containing a heat-accumulator material, the upper ends of which face the combustion chamber. The heat-accumulator towers are each connected via a control chamber to a channel for the supply of the raw gas to be purified and a channel for the discharge of clean gas. The two channels are each connectable to the at least two heat-accumulator towers via the control chambers for an alternating supply of raw gas and discharge of clean gas via shut-off devices actuable by actuators. The two channels are arranged laterally adjacent to the heat-accumulator towers and are located adjacent each other and above the respective control chambers and interconnected with the respective control chambers through openings therebetween, with the openings being closable via shut-off devices.

Abstract: A chemical heat accumulator includes a receptacle, a first reaction vessel, and a second reaction vessel. The first reaction vessel is hermetically connected to the receptacle and supplied with water from the receptacle. The first reaction vessel contains a chemical compound that causes a hydration reaction with the water from the receptacle to generate water vapor by a heat of reaction, and causes a dehydration reaction by receiving heat. The second reaction vessel is hermetically connected to the first reaction vessel and supplied with the water vapor from the first reaction vessel. The second reaction vessel contains a chemical heat storage material that generates heat by causing a hydration reaction with the water vapor from the first reaction vessel and stores heat through a dehydration reaction caused by receiving heat. The chemical heat storage material is thermally in contact with an object to be heated.

Abstract: For the purification of waste gas containing nitrogen oxides in combination with CO, VOCs or nitrous oxide, in particular waste gas resulting from the production of cement clinker, nitric acid, adipic acid, fertilizers and uranium trioxide, a regenerative thermal post-combustion system with at least two regenerators (A, B) is used by means of which the CO, VOCs and nitrous oxide are thermally purified in the combustion chamber (1) at a temperature of 800 to 1000° C. and the nitrogen oxides are thermally reduced with the SCR catalyst (6) by adding a nitrogen-hydrogen compound, wherein the waste gas already thermally purified is removed from the respective two-part regenerator (A or B) at a suitable place at a temperature of approx. 300° C., guided via the SCR catalyst (6) in a constant direction of flow and subsequently fed back to the remaining section (A?, B?) of the regenerator (A or B).

Abstract: The present techniques are directed to a system and methods for operating a gas turbine system. An exemplary gas turbine system includes an oxidant system, a fuel system, and a control system. A combustor is adapted to receive and combust an oxidant from the oxidant system and a fuel from the fuel system to produce an exhaust gas. A catalyst unit including an oxidation catalyst that includes an oxygen storage component is configured to reduce the concentration of oxygen in the exhaust gas to form a low oxygen content product gas.

Abstract: A valve lift mechanism for actuating a valve in the vertical direction, and a regenerative thermal oxidizer including the valve and lift mechanism is disclosed. The valve is allowed to move vertically and oscillating rotary motion is possible. Vertical movement is achieved using the valve lift mechanism without the use of compressed air. In certain embodiments, the valve lift mechanism includes a torque motor. Preferably, a non self-locking screw jack is used to adjust the vertical height of the valve. Vertical movement can reduce the torque needed to rotate the valve, and also facilitates servicing of the valve. For example, if the valve experiences high temperature, and consequently expands, rotating the valve against the mating seal plate can be difficult, if not impossible. By lowering the valve slightly, the frictional forces between the valve and the mating seal plate are reduced, allowing freer rotational movement of the valve.

Abstract: A fuel reformer is provided that is capable of improving endurance and performance. The fuel reformer includes a first burner having a first-burner first end, a first-burner second end, and a first opening formed in the first-burner first end; a second burner surrounding the first burner and having a second-burner second end, a second-burner second end, and a second opening in the second-burner first end, wherein the second-burner second end is coupled to the first-burner second end to communicate a fluid. The reforming reactor is configured to generate heat from the first and second burners, and has a fuel supply including a nozzle unit in the first burner and supplies a second oxidation fuel from the outside to the first burner. A first oxidation fuel is introduced into the first opening and flows through the first burner in a first direction and flows through the second burner in a third direction opposite to the first direction.

Abstract: An exhaust gas purification apparatus including a first exhaust gas treatment member carrying an oxidation catalyst, a three-way catalyst, or a NOx storage reduction catalyst which is used for purifying exhaust gas from an internal combustion engine, a second exhaust gas treatment member having a hydrocarbon (“HC”) storing function disposed on the downstream side of the first exhaust gas treatment member, and a heat dissipating unit disposed between the first exhaust gas treatment member and the second exhaust gas treatment member. An upstream side of the heat dissipating unit is formed into a heat insulating structure, and a further upstream side thereof is formed into a heat retaining structure. Even when an internal combustion engine is accelerating, the exhaust gas flowing into the HC adsorption material can be cooled efficiently and HC can be adsorbed before the temperature of the three-way catalyst or the NOx purification catalyst rises to an HC light-off temperature.

Abstract: The invention relates to a method for producing a ceramic filter element in an exhaust gas filter for an internal combustion engine, in particular a diesel particulate filter, wherein a base paper carrier web is soaked with a ceramic slip and then burnt out. The base paper carrier web uses a thickness and/or structure that varies over the width and/or length of the base paper carrier web.

Abstract: A PCM device (1) is provided for an exhaust system of an internal combustion engine, especially of a motor vehicle. A simplified installation of the PCM device (1), with reduced heat stresses, is achieved through the provision of at least one storage plate (2), which has two plate bodies (3, 4), which follow each other, enclose a storage space (7) filled with heat storage material (18) and have a wave structure (5, 6) each. The wave structure (5) of one plate body (3) extends sloped in relation to the wave structure (6) of the other plate body (4).

Abstract: A system to control the emissions of a fluid stream in a cyclical fashion utilizing an up-flow cycle and a down-flow cycle. The system may include a first inlet and a first outlet at a first end of the system and a second inlet and a second outlet at a second end of the system, a catalyst zone between the first end and second end, two heat transfer zones, at least one heat transfer zone positioned between the catalyst zone and the first end of the system and between the catalyst zone and the second end of the system, and two heating zones, at least one heating zone positioned between the catalyst zone and each of the at least one heat transfer zones. The symmetrical arrangement permits a bi-directional fluid cycle to recover a portion of the energy supplied to the system during each cycle.

Abstract: An object of the present invention is to provide an exhaust gas treatment system that effectively use heat recovered from an exhaust gas without any limitation in a CO2 chemical absorption equipment that requires enormous heat energy, and thus enabling reduction in running cost of the CO2 chemical absorption equipment.

Abstract: The invention provides a system for regenerative selective catalytic reduction including a catalyst chamber that contains a catalyst for reducing NOX in a gas stream passing therethrough. The system also includes a reactant injector, first and second heat exchangers, and a valve manifold adapted to direct a substantially continuous gas stream through the heat exchangers and catalyst chamber in such a manner as to flow through the catalyst chamber in the same flow direction during each cycle of the system. The invention also provides a process of regenerative selective catalytic reduction wherein the gas stream through the catalyst chamber flows in the same flow direction during each cycle of the process.

Abstract: The present invention relates to systems and processes for reducing the amount of carbon dioxide in a carbon dioxide-containing gas. In particular, the carbon dioxide-containing gas is contacted with a carbonate-containing solution. At least a portion of carbon dioxide in the carbon dioxide-containing gas is absorbed in the carbonate-containing solution to produce a carbon dioxide-, carbonate-containing solution. A heat recovery mechanism is employed to recover heat from the carbon dioxide-, bicarbonate-, carbonate-containing solution exiting the chamber to maintain the temperature of the chamber within a range of from about 50° C. to about 90° C.

Abstract: A system to control the emissions of a fluid stream in a cyclical fashion utilizing an up-flow cycle and a down-flow cycle. The system may include a first inlet and a first outlet at a first end of the system and a second inlet and a second outlet at a second end of the system, a catalyst zone between the first end and second end, two heat transfer zones, at least one heat transfer zone positioned between the catalyst zone and the first end of the system and between the catalyst zone and the second end of the system, and two heating zones, at least one heating zone positioned between the catalyst zone and each of the at least one heat transfer zones. The symmetrical arrangement permits a bi-directional fluid cycle to recover a portion of the energy supplied to the system during each cycle.

Abstract: The invention provides a system for regenerative selective catalytic reduction including a catalyst chamber that contains a catalyst for reducing NOX in a gas stream passing therethrough. The system also includes a reactant injector, first and second heat exchangers, and a valve manifold adapted to direct a substantially continuous gas stream through the heat exchangers and catalyst chamber in such a manner as to flow through the catalyst chamber in the same flow direction during each cycle of the system. The invention also provides a process of regenerative selective catalytic reduction wherein the gas stream through the catalyst chamber flows in the same flow direction during each cycle of the process.

Abstract: A resistively heated diesel particulate filter (DPF). The resistively heated DPF includes a DPF having an inlet surface and at least one resistive coating on the inlet surface. The at least one resistive coating is configured to substantially maintain its resistance in an operating range of the DPF. The at least one resistive coating has a first terminal and a second terminal for applying electrical power to resistively heat up the at least one resistive coating in order to increase the temperature of the DPF to a regeneration temperature. The at least one resistive coating includes metal and semiconductor constituents.

Abstract: An exhaust filter system includes a particulate filter (PF) that is disposed downstream from an engine. The PF filters particulates within an exhaust from the engine. A heating element heats particulate matter in the PF. A fastener limits expansion movement of the heating element relative to the PF.

Abstract: An exhaust heat recovery heat exchanger assembly for use along a main exhaust flow path of an exhaust system for an engine, and a method of operation, is disclosed. The exhaust heat recovery heat exchanger includes a sealed vacuum chamber, including a hydride pellet mounted in the chamber, and electrical leads extending from the hydride pellet. An exhaust chamber along the main exhaust flow path is located along an inner wall of the vacuum chamber. A housing surrounds the vacuum chamber and defines a heat receiving medium chamber. A heat receiving medium flows through the heat receiving medium chamber and absorbs heat from the exhaust flowing through the exhaust chamber when an electric current is applied to the hydride pellet.

Abstract: A heat exchanger for a regenerative thermal oxidiser is described. The heat exchanger has a heat exchange bed that is disposed within a housing. The heat exchange bed is disposed parallel to the longest axis of the housing. A cavity is formed at either side of the heat exchange bed. Channels in the heat exchange bed link the two cavities. Because the heat exchange bed is disposed parallel to the longest axis of the housing, the area of the heat exchange bed facing the cavities is maximised, and the length of the channels is minimised, this reduces the pressure required to drive gas through the heat exchanger.

Abstract: An air pollution control system includes an emission treatment system configured to receive flue gas, to reduce at least one pollutant therefrom, and to output emission treated flue gas. A first air heater in fluid communication with the emission treatment system includes a heat exchanger for heating forced air introduced thereto above a base temperature and thereby cooling emission treated flue gas from the emission treatment system to a stack discharge temperature. A second air heater in fluid communication with the first air heater to receive heated forced air therefrom includes a heat exchanger for heating forced air introduced thereto to a preheat temperature for combustion in a boiler and thereby cooling flue gas introduced from a boiler to the second air heater to an emission treatment temperature. The second air heater is in fluid communication with the emission treatment system to introduce cooled flue gas thereto.

Abstract: A composite honeycomb structure in which the honeycomb structure is highly functionalized and adapted to have catalytic function, considering pressure loss is provided. A honeycomb structure having average pore diameter of 5 to 200 ?m and specific surface area of 100 to 1500 m2/g is provided. Further, a translucent honeycomb structure and a photocatalyst-carrying translucent honeycomb structure having a photocatalyst carried on a surface of the translucent honeycomb structure and/or contained in the translucent honeycomb structure are provided. Further, an air cleaner and a water purifier using the honeycomb structure and the photocatalyst-carrying translucent honeycomb structure are provided.

Abstract: A honeycomb structure includes a ceramic block formed by a plurality of pillar-shaped honeycomb fired bodies each having a large number of cells longitudinally disposed in parallel with one another with a cell wall between the cells. The plurality of honeycomb fired bodies are combined with one another by interposing an adhesive layer with a sealing material layer formed on a peripheral face of the ceramic block and include a plurality of different shapes of the honeycomb fired bodies. A thickness of a peripheral wall forming the peripheral face of the ceramic block is virtually even. A shape of a cell located at an outermost periphery of the ceramic block is virtually identical with a shape of a cell located at a place other than the outermost periphery of the ceramic block. On the peripheral wall of the honeycomb fired body, a step is provided.

Abstract: In order to clean the waste gases from a processing system (1), in which a process using non-metal halide is carried out, the waste gas (3) is mixed with a gas (7) that prevents recombination of ionized particles formed from the non-metal fluoride. In a gas discharge chamber (25), the waste gas (3, 7) is then converted into a plasma in which the non-metal halide, present in the waste gas (3, 7), is ionized. The ionized particles, that have been saturated with the gas, prevent the recombination thereof and can then be removed from the waste gas.

Abstract: The holding sealer comprises inorganic fibers, and the holding sealer has a first surface and a second surface, wherein the first surface has ditch-shaped structures.

Abstract: The present invention provides a plate-shaped preferential oxidation (PROX) reactor. The plate-shaped PROX reactor of the present invention includes a plate-shaped chamber having an inlet to supply gas and an outlet to discharge fluid, a distributor for distributing gas supplied into the inlet, a main reactor having a catalyst for converting carbon monoxide contained in the gas into another material, and a radiator disposed on an outer surface of the chamber to dissipate heat.

Abstract: The inventive system for evaluating the charged state of depollution means integrated into the exhaust line of a motor vehicle engine is characterised in that it comprises means (7) for determining a pressure in the depollution means, means (8) for determining the volume gas flowrate upstream said depollution means (10) and means for comparing the depollution means state defined by the thus determined pressure and the volume flowrate with a predetermined diagram (11) of the absent, overcharged and clogged states of the depollution means in order to evaluate the state thereof.

Abstract: Modified exhaust aftertreatment filters for filtering engine exhaust are provided as are methods of design and manufacturing modified exhaust aftertreatment filters. The modified filters are subject to reduced back pressure and reduced thermal gradients experienced during regeneration as compared to unmodified filters. The modified filters include flow-through channels obtained by unplugging channels which normally are plugged in an unmodified filter.

Abstract: A filter apparatus having an element configured as a tubular filter, which is mounted in a carrier tube such that an annular space for fluid flow is formed between the outer surface of the tubular filter element and the inner surface of the carrier tube. The tubular filter is releasably mounted inside the carrier tube such that it can be pulled by one end out of the carrier tube and a second tubular filter element connected to the opposite end of the filter element being pulled out can simultaneously be pulled into the carrier tube.

Abstract: A honeycomb body includes a housing and a plurality of layers with a curved profile and a predetermined length. Each layer includes at least one at least partially structured metal foil forming a multiplicity of passages with a passage cross section. A majority of the layers have different lengths than one another. A process for producing a honeycomb body, a process for treating exhaust gas, and an exhaust gas assembly, are also provided.

Abstract: The present invention provides honeycomb ceramic articles and methods of manufacturing such articles having few or no defects in the outer skin. Methods for minimizing and/or eliminating cracks in thin-wall and ultra-thin-wall cordierite honeycomb articles are disclosed. Advantageously, the present invention prevents skin cracks from forming during the production of thin-wall and ultra-thin-wall cordierite honeycomb articles by optimizing skin properties such as porosity, thickness and pore size distribution.

Abstract: In automotive exhaust gas catalysts with a metallic honeycomb composed of corrugated and smooth sheet layers, it is known that the heat capacity and thermal conductivity of the honeycomb can be reduced by perforations in the sheet layers. As a result, the honeycomb heats up more rapidly and the catalytic coating applied on the honeycomb reaches its operating temperature more rapidly. A disadvantage here is the reduction in the support surface area by the perforations in the sheet layers. According to the invention, suitable adjustment of the properties of the coating suspension used for the catalytic coating and of the dimensions of the holes relative to one another allows the holes to be filled permanently with catalyst material. The resulting catalyst has, at the same coating concentration as a catalyst with unperforated sheet layers, a significantly reduced heat capacity and thermal conductivity.

Abstract: Regenerative selective catalytic reduction (RSCR) systems and processes are provided whereby NOx and CO levels in gases are reduced by mixing the gas with a reactant and then introducing the gas into an RSCR apparatus for treatment that entails heating the gas, causing the gas to undergo one or more catalytic reactions, and then directing the gas through a heat transfer area, to which the gas provides heat for use in connection with successive cycles of the RSCR process.

Abstract: A porous ceramic honeycomb filter manufactured from an oxide-based ceramic material having a pore size distribution with d1?7.0 microns. Preferably, the oxide-based material is cordierite or aluminum titanate. Alternatively, the filter contains a cordierite-containing ceramic body with a narrow pore size distribution with db?1.00, wherein db=(d90?d10)/d50. Also disclosed is a batch mixture, method and honeycomb green body made from mixture of inorganic source materials selected from the group of magnesia sources, alumina sources, and silica sources, and a pore former having a narrow particle size distribution with dps?0.90, wherein dps={(dp90?dp10)/dp50}. The pore former is preferably selected from a group consisting of canna starch, sago palm starch, green mung bean starch, and single-mode potato starch.

Abstract: An automatic VOC concentration control apparatus is capable of adjusting the concentration of VOC in a catalytic device under a predetermined value. The automatic VOC concentration control apparatus includes a housing having an inlet port and an outlet port for introducing and discharging VOC vapor, respectively, one or more cooling tubes for cooling the VOC vapor introduced through the inlet port, and one or more porous members for holding droplets of VOC liquid thereon as the VOC vapor is condensed into liquid.

Abstract: A filter composed of a filter medium (10) formed from a corrugated filter layer (11) and a flat filter sheet (12) which are interconnected by embossing points (15). This eliminates the need for an additional joining agent. Production of the filter is simplified because no additional materials are required to be supplied or cured.

Abstract: For treating waste gas flows, a regenerative thermal afterburning system is used, comprising at least four regenerators, filled with ceramic heat accumulator bodies, and connected via a common combustion chamber. The waste gas is alternately admitted in cycles to one regenerator, whose heat accumulation bodies have been preheated, and then burned in the combustion chamber to yield clean gas, the said gas being extracted by a further regenerator, with simultaneous heating of the latter's heat accumulator bodies, while a third regenerator is flushed with flush gas. During the cyclical operation of the three regenerators, the remaining fourth regenerator extracts combustion chamber air from the combustion chamber, for the removal of deposits on the heat accumulator bodies in this regenerator by means of pyrolysis. In turn, a fan then feeds this extracted air to the crude gas.

Abstract: This structure (11) comprises first and second filtering elements (15A, 15B) extending essentially parallel to a longitudinal axis (X-X?) of the structure (11) between an admission region (21) of the gases into the structure (11) and an evacuation region (23) of the gases from the structure, and comprises a seal (17) for joining these elements (15A, 15B). The seal (17) comprises at least one downstream pat (43) which has a thermal mass per unit length greater than the thermal mass per unit length of an upstream part (41) of the seal (17). The invention is for use in particulate filters for the exhaust gases of a motor vehicle diesel engine.

Abstract: A honeycomb filter includes a plurality of honeycomb fired bodies each having a longitudinal direction and a plurality of cells which are divided by cell walls and which extend in the longitudinal direction in substantially parallel with each other, each of the cells having one end sealed; and an adhesive material binding the plurality of honeycomb fired bodies. The plurality of honeycomb fired bodies includes outer peripheral honeycomb fired bodies each having a first outer wall and positioned at an outermost periphery of the honeycomb filter; and inner honeycomb fired bodies surrounded by the outer peripheral honeycomb fired bodies. Each of the inner honeycomb fired bodies has a second outer wall thinner than the first outer wall.

Abstract: A method and a device for the regeneration of a particle filter, especially a diesel particle filter, arranged in the exhaust gas train of an internal combustion engine, wherein an exhaust gas stream to be cleaned is supplied to the at least one particle filter. The exhaust gas stream supplied to the at least one particle filter is a raw exhaust gas stream of the internal combustion engine, into which, during regeneration mode, a heated exhaust gas stream at a higher temperature than the raw exhaust gas stream is mixed at a point upstream of the particle filter under the control of at least one open-loop and/or closed-loop control device, which actuates a throttle device and/or shut-off device in accordance with predetermined regeneration parameters.

Abstract: A vehicle exhaust gas purification device has a multipart outer housing (10) including a tube (12) and end walls (14) that have been reshaped into funnels. The tube (12) and the end walls (14) are fitted into each other and brazed, soldered or welded to each other.

Abstract: The invention relates to a honeycomb monolithic element for the filtration of particles, characterized in that the peripheral channels forming part of the outer wall of said element are configured to help in the formation of an outer wall whose inner face is substantially flat over the whole length of the element and in that said flat wall also has an increased thickness at the corners, so that, on a cross section, the ratio R of the thickness Ec of the wall, measured along the bisecting line of the angle at a corner of the element, over the minimal thickness Emin of said wall is greater than 1.5.

Abstract: Disclosed are ceramic honeycomb articles, which are composed predominately of a crystalline phase cordierite composition. The ceramic honeycomb articles possess a microstructure characterized by a unique combination of relatively high total porosity of less than 54%, and relatively narrow pore size distribution having a d10 pore diameter of not less than 8 ?m, a d90 pore diameter of not greater than 35 ?m, and a value of df=(d50?d10)/d50 of less than 0.50. The articles exhibit high thermal durability and high filtration efficiency coupled with low pressure drop across the filter. Such ceramic articles are particularly well suited for filtration applications, such as diesel exhaust filters or DPFs. Also disclosed are methods for manufacturing the ceramic articles of the present invention.

Abstract: A honeycomb filter for purifying exhaust gases that is free from occurrence of cracks and coming-off of plugs and is superior in durability upon its use. The honeycomb filter includes a columnar body made of porous ceramics, which has a number of through holes placed in parallel with one another in the length direction with wall portion interposed therebetween, designed so that predetermined of the through holes are filled with plugs at one end of the columnar body, while the through holes not filled with the plugs at the one end are filled with plugs at the other end of the columnar body, and part of or the entire wall portion functions as a plug for collecting particles. A bending strength F? (MPa) of the honeycomb filter and a length L (mm) of the plug in the length direction of the through hole satisfy the relationship of F?×L?30.

Abstract: A diesel exhaust filter construction includes a rectangular filter block, an elongated non-rectangular jacket with oval cross section, and support structure supporting the filter block in a center of the jacket. The support structure includes shielding components forming an insulating air gap with the jacket around the filter block (including a double-layered air gap in “hot” areas), and further includes support structure slidably supporting one end of the filter block to accommodate dissimilar thermal expansion. The structure further includes baffling components with angled surfaces directing input exhaust gases along efficient flow paths from an inlet cone into front, rear, and opposite sides of the filter block and further directing output exhaust gases from top and bottom sides of the filter block toward a longitudinally-centered outlet cone. Some components are identical is shape and size for use in different locations on the construction, thus simplifying tooling.