Abstract: The invention relates to a filtering media having a photocatalytic action which has a thickness of at least 2 mm, which is homogeneous and which is devoid of orifice apparent to the naked eye, comprising a felt of inorganic fibers, the fibers of which are coated with a coating comprising a catalyst having a photocatalytic action, said felt exhibiting a weight per unit area of between 30 and 80 g/m2, said coating representing 5 to 80% of the weight of said media, said media exhibiting a gas pressure drop of less than 150 Pa at 1 m/s in unpleated condition. This media is intended to be incorporated in a purifier of gas, such as air, furthermore comprising a system for illuminating said media with UV radiation. The media exhibits an excellent purification efficiency and a very low pressure drop.

Abstract: Some embodiments discussed relate to an apparatus comprising a power amplifier module. The power amplifier module includes a plurality of sensors, and a first digital communication port configured to provide a monitor signal from at least one of the plurality of sensors. The apparatus includes a transceiver module coupled to provide an signal to an input of the power amplifier the transceiver module including a second digital communication port configured to receive the monitor signal from the first digital communication port, a processing unit configured to generate at least one of a bias control signal and a back-off signal dependent upon the monitor signal, and a power controller to receive the at least one of bias control signal and the back-off signal and provide at least one further input signal to the power amplifier based on at least one of the bias control signal and the back-off signal.

Abstract: A method and system remove contaminants from a vapor. In one embodiment, the system includes a contaminant removal system having a vacuum box. A contaminated vapor from process equipment is introduced to the vacuum box. The contaminated vapor includes steam and hydrocarbons. The vacuum box includes a water removal device. The water removal device removes water from the contaminated vapor to provide water and a reduced water vapor. The water and the reduced water vapor are removed from the vacuum box.

Abstract: An exhaust gas purification system for an internal combustion engine of a motor vehicle is provided. The system includes a first particulate filter element and a second particulate filter element, which is connected downstream of the first particulate filter element and through which flows the exhaust gas that emanates from the first particulate filter element. The first particulate filter element operates as a system filter and the second particulate filter element operates as a diagnostic filter. A charge of the diagnostic filter can be determined, and the functional capability of the system filter can be deduced based thereon.

Abstract: A filter for filtering particulate matter (PM) from exhaust gas emitted from a compression ignition engine, which filter comprising a porous substrate having inlet surfaces and outlet surfaces, wherein the inlet surfaces are separated from the outlet surfaces by a porous structure containing pores of a first mean pore size, wherein the porous substrate is coated with a wash coat comprising a plurality of solid particles comprising a molecular sieve promoted with at least one metal wherein the porous structure of the wash coated porous substrate contains pores of a second mean pore size, and wherein the second mean pore size is less than the first mean pore size.

Abstract: A filter device for filtering gaseous fluids has a spiral-shaped wound filter path having parallel flow channels for the fluid. The flow channels end in a wound state at an axial face of the filter element at axially different positions. At the second, opposite axial face, the filter element has a geometry deviating from that of the first face.

Abstract: A method of manufacturing an exhaust gas purifying apparatus includes providing an exhaust gas-treating body. A holding sealing material is provided. The holding sealing material includes inorganic fibers. The holding sealing material has a first end face and a second end face each provided approximately in parallel with a width direction. The holding sealing material is wound around a periphery of the exhaust gas-treating body to form a gap between the first end face and the second end face. The exhaust gas-treating body with the holding sealing material is housed in a casing. At least one of a first electrode member and a first sensor is disposed at the gap of the holding sealing material so that at least one of the first electrode member and the first sensor is connected to the exhaust gas-treating body, passes through the holding sealing material, and penetrates the casing.

Abstract: A method of manufacturing a honeycomb body is disclosed having the steps of mixing inorganic source materials, a nut shell pore former, and forming aids to form a plasticized batch, wherein the nut shell pore former has a particle size distribution with 20 ?m?dp50?70 ?m, and forming the plasticized batch into the honeycomb body having a plurality of channels formed by intersecting walls. Green honeycombs and porous ceramic honeycombs produced by the method are also disclosed.

Abstract: An air filter insert with a folded filter medium is provided along a side edge with a sealing element which is composed of a first contact section which extends in axial direction and a second contact section which extends in radial direction, the two contact sections being applied directly to the side edge of the filter medium.

Abstract: In accordance with the invention there are devices and processes for making ceramic nanofiber mats and ceramic filters for use in high temperature and in corrosive environments. The process for forming a ceramic filter can include electrospinning a preceramic polymer solution into a preceramic polymer fiber having a diameter from about 10 nm to about 1 micron and forming a preceramic polymer fiber web from the preceramic polymer fiber onto a collector. The process can also include pyrolyzing the preceramic polymer fiber web to form a ceramic nanofiber mat having a diameter less than the diameter of the preceramic polymer fiber, the ceramic nanofiber mat comprising one or more of an oxide ceramic and a non-oxide ceramic such that the ceramic fiber mat can withstand temperature greater than about 1000 ° C.

Abstract: There is provide a honeycomb filter which can suppress generation of cracks in plugged portions due to heat generated by burning of a PM during regeneration and comprises a honeycomb basal body including porous partition walls arranged to form a plurality of cells disposed in parallel with one another and including inflow cells and outflow cells which are formed adjacent to the inflow cells; first plugged portions with which one end of each of the inflow cells is plugged; second plugged portions with which another end of each of the outflow cells is plugged; porous collecting layers formed on the inflow-cells side surfaces of the partition walls; and end aggregate layers made of a particulate aggregate material and formed on the inflow-cells-side surfaces of the first plugged portions, and a thickness of the end aggregate layers is from 0.5 to 5 mm.

Abstract: A mat includes inorganic fibrous substances, first and second main faces, first and second side faces and intertwined portions. The intertwined portions respectively extend from needle piercing points of the first main face to needle piercing points of the second main face. A first virtual straight line and each of second virtual straight lines intersect with each other at a first angle of less than about 90° when viewed from the first side face to the second side face. The first virtual straight line and each of third virtual straight lines intersect with each other at a second angle of more than about 90° when viewed from the first side face to the second side face. The second virtual straight lines and the third virtual straight lines intersect with each other at a third angle when viewed from the first side face to the second side face.

Abstract: A holding sealing material includes inorganic fibers, a mat shape, a first end face and a second end face and a penetration portion. The mat shape has a width direction, a length direction and a thickness direction. The first end face and the second end face are each provided approximately in parallel with the width direction. The penetration portion penetrates the holding sealing material in the thickness direction.

Abstract: A filter assembly is described herein for controlling the air passing therethrough. The filter assembly can include a housing comprising a cavity formed therein. The filter assembly can also include a filter positioned within the cavity and coupled to the housing. Further, the filter assembly can include a reinforcement structure coupled to an end of the housing and adjacent to a top end of the filter.

Abstract: The invention relates to a honeycomb structure including a set of adjacent channels, each channel being in communication with upstream and downstream surfaces, respectively, via upstream and downstream openings, such that said set of channels forms cross-sectional upstream and downstream patterns on said upstream and downstream surfaces, respectively. According to the invention, at least one of the upstream and downstream surfaces has an error-proofing mark extending over fewer than 50 channels and making it impossible to completely stack any one of the upstream and downstream patterns onto the other, the outer perimeter of the upstream and/or downstream pattern being symmetrical or having an asymmetry that extends over fewer than 10 channels. The invention can be used in the filtration of particles contained it the exhaust gases of internal combustion engines, in particular diesel engines.

Abstract: Fused particles having the following chemical composition, as a percentage by weight on the basis of the oxides: more than 15% but less than 55% of Al2O3; more than 25% but less than 60% of TiO2; less than 20%, in total, of at least one oxide of an element M1, chosen from MgO and CoO; more than 0.7% but less than 20%, in total, of at least one oxide of an element M2, chosen from the group formed by Fe2O3, Cr2O3, MnO2, La2O3, Y2O3 and Ga2O3; less than 20%, in total, of at least one oxide of an element M3, chosen from the group formed by ZrO2, Ce2O3 and HfO2; and less than 30% of SiO2. Ceramic product or material obtained by sintering said particles.

Abstract: Fused particles containing, by weight percent: more than 15% but less than 55% of Al2O3; more than 20% but less than 45% of TiO2; more than 3% but less than 30% of SiO2; less than 20%, in total, of at least one oxide selected from the group consisting of ZrO2, Ce2O3, and HfO2; less than 1% of MgO; and more than 1% but less than 15%, in total, of at least one selected from the group consisting of CaO, Na2O, K2O, SrO, B2O3, and BaO. Also, a ceramic product or material obtained by sintering the fused particles.

Abstract: A method of manufacturing a ceramic diesel particle filter (DPF) and a DPF manufactured by the method, the DPF having a ceramic filter body (1) including gas channels (18, 18?) with planar and porous filter segments (3), which are provided for the exhaust gas stream (2) to flow through them transversely to the face of the filter segments (3). The filter body (1) is formed by sintering at least one ceramic-impregnated fiber web (4) in a firing step under heat such that fibers (5) of the fiber material are burned off and the ceramic material (6) is sintered together to form the porous filter segment (3) between its two surfaces (7, 8). At least one fiber web (4) is corrugated to form the gas channels (18, 18?) and rolled up to form the filter body (1), and the cross section of at least a portion of the gas channels (18, 18?) changes from an inlet end (33) to a discharge end (34).

Abstract: Filter media is treated with a composition comprising cationic fluorinated ether silanes to provide durable water- and/or oil-repellency properties.

Abstract: The invention relates to a gas filter insert (1), particularly an air filter insert for a fresh air system of an internal combustion engine, having a filter body (2) which extends in its longitudinal direction (4) in a U-shape around an inner chamber (5), and having a connector (3) which communicates with the inner chamber (5) and is arranged on the filter body on the open end-face side (7) thereof. In order to simplify the construction of the filter insert (1), the filter body (2) is sealed transversally to its longitudinal direction (4), with an end plate (9) on at least one end side (8).

Abstract: A pleatable, high efficiency composite gas filtration media is provided. The media includes an essentially boron free chopped strand glass backer layer and media layer comprising a synthetic material. The composite media exhibits excellent pleatability, low boron out gassing, and low organic out gassing, with filtration performance comparable to existing commercial membrane composites.

Abstract: An exhaust processing device includes a main body tube portion and a closing tube portion. The main body tube portion includes an opening in an axial end thereof, houses a main body exhaust path in an inside thereof, which allows an exhaust gas to pass therethrough. The closing tube portion includes a plate portion and a tubular portion. The plate portion covers the opening of the axial end of the main body tube portion. The tubular portion radially outwardly protrudes from an outer peripheral surface of the main body tube portion, and is integrated with the plate portion. The tubular portion houses an exhaust path in an inside thereof, which communicates with the main body exhaust path. The tubular portion of the closing tube portion includes a first split half portion integrally molded with the plate portion, and a second split half portion joined to the first split half portion.

Abstract: A soot particle filter according to the invention can be particularly used in motor vehicles or heating systems using liquid and solid fuels. The device is particularly characterized by a time controlled variable regeneration of the soot particle storage (10) and soot particle burn-off. The device is in particular catalytic. The device comprises at least one filter housing (2) having an input (3), an output (4) and a filter element (6). A soot particle storage chamber (10) is further provided in the filter housing (2) and comprises an access (19) that is particularly angled and tapered toward the inside. The inner chamber of the soot particle storage (10) is lined with precious metal discs (11). Said discs have holes, are angled and/or corrugated. The precious metal discs and/or a precious metal mesh (11) are at least partially catalytically coated. An ignition device (12) is arranged in the filter housing (12), for example a glow plug and/or a glow filament.

Abstract: A honeycomb structure includes aluminum titanate, cell walls, and pore portions. The cell walls extend along a longitudinal direction of the honeycomb structure to define cells between the cell walls. The pore portions have an average pore diameter of about 10 ?m to about 20 ?m. A length of a longest pore portion among the pore portions in a binary image including substrate portions and the pore portions is about 8 times or less of the average pore diameter. The binary image is converted from a microscopic image of a cross section of the cell walls in parallel with the longitudinal direction. The length is measured along a line drawn in a direction perpendicular to a thickness direction of the cell walls.

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: The present invention provides a hot-trap device (1) comprising an enclosure (2) with at least one inlet (3), at least one outlet (5) at least one heating means (7) and at least one collector means (10) for the conversion of reaction by-products into products, wherein the collector means is arranged within the enclosure between the inlet and the outlet has a diameter that substantially matches the diameter of the enclosure and has at least one opening (18).

Abstract: Disclosed are ceramic honeycomb articles which possess a unique microstructure characterized by porosity between 40% and 70%, and the presence of coarse pores exhibiting a depth equivalent to the thickness of the cell wall and a dimensional width, in the plane of the cell wall, exhibiting a diameter that is at least as large as the thickness of the cell wall. The articles exhibits reduced filtration efficiency coupled with low pressure drop across the filter, and a reduced regeneration need. Such ceramic articles are particularly well suited for filtration applications, such as off-road and retro-fit diesel exhaust filters or DPFs. Also disclosed is a method for manufacturing the ceramic article wherein the pore former is capable of forming coarse pores.

Abstract: A cordierite-based ceramic honeycomb filter comprising a honeycomb structure having a large number of flow paths partitioned by porous cell walls, and plugs alternately formed in said flow paths on the exhaust-gas-inlet side or the exhaust-gas-outlet side for permitting an exhaust gas to pass through said porous cell walls to remove particulate matter from the exhaust gas, said porous cell walls having porosity of 45-58%, an average pore size of 15-30 ?m, the volume of pores having pore sizes exceeding 50 ?m being more than 10% and 25% or less of the total pore volume, the volume of pores having pore sizes of 100 ?m or more being 1-8% of the total pore volume, the volume of pores having pore sizes of less than 10 ?m being 3-10% of the total pore volume, and said pores having a pore size distribution deviation ? [=log(D20)?log(D80)] of 0.

Abstract: A filter media for use in an inlet air filtration system includes a woven glass material and an amount of carbon impregnated within the woven glass material.

Abstract: A plugged honeycomb structure including particulate matter (PM) trapping layers disposed on the surfaces of the partition walls extending up to inflow side end faces of the plugging portions that plug outflow cells so that adjacent PM-trapping layers with the partition walls and the plugging portion therebetween are disposed so as to continue on the inflow side end faces of the plugging portions. The PM-trapping layers are extended up to the inflow side end faces of the plugging portions to form protruding portions having a protrusion height corresponding with 0.1 to 2 times the length of a side of the outflow cells from the inflow side end faces of the plugging portions toward the outside of the cell extension direction.

Abstract: Z-filters capable of cleaning particulate matter from airflow streams in dust collectors, including reverse flow, reverse air, and reverse pulse systems.

Abstract: A collapsible underhood container for mounting under a vehicle hood with a portion of the collapsible underhood container extending into an area between the hood and an underhood safety plane when in an extended position, the container comprising: a lower housing, an upper container portion and a locking feature. The lower housing is fixed relative to the vehicle and has a bottom and side walls. The upper container portion has walls adjacent to and telescopically slidable on the side walls of the lower housing and a top, with the top located in the area between the hood and the safety plane. The locking feature maintains the upper container relative to the lower housing when in the extended position and releases the upper container portion to slide downward relative to the lower housing to a collapsed position when the hood contacts the upper container.

Abstract: A honeycomb structure includes aluminum titanate and cell walls. The cell walls extend along a longitudinal direction of the honeycomb structure to form a plurality of cells between the cell walls. A porosity of the honeycomb structure is from about 40% to about 60%. In a binary image of substrate portions and pore portions of each of the cell walls, an area ratio (%) of the pore portions to a whole area in a rectangularly-divided image is in a range from (the porosity?about 25%) to (the porosity+about 25%). The binary image is converted from a microscopic image of a cross section of each of the cell walls in parallel with the longitudinal direction. The rectangularly-divided image is formed by dividing the binary image in a direction parallel to a thickness direction of each of the cell walls at a predetermined width.

Abstract: A honeycomb filter includes a ceramic laminated body including columnar porous ceramic members and an adhesive layer combining the columnar porous ceramic members with one another. The columnar porous ceramic members each have a partition wall and through holes, the through holes extend in parallel with one another in a length direction of the columnar porous ceramic members, the partition wall separates the through holes and filters particulates in an exhaust gas, and the adhesive layer includes an inorganic binder, an inorganic fiber, inorganic particles and an inorganic balloon.

Abstract: A ceramic honeycomb structure comprised of at least two separate smaller ceramic honeycombs that have been adhered together by a cement comprised of inorganic fibers and a binding phase wherein the smaller honey-combs and fibers are bonded together by the binding phase which is comprised of an silicate, aluminate or alumino-silicate. The fibers have a multi-modal size distribution in which some fibers have lengths of up to 1000 micons and other fibers have lengths in excess of 1 mm. The cement composition may be made in the absence of other inorganic and organic additives while achieving a shear thinning cement, for example, by mixing oppositely charged inorganic binders in water together so as to make a useful cement composition for applying to the smaller honeycombs to be cemented.

Abstract: An exhaust treatment system comprises a particulate matter filter, a first heater element, and a second heater element. The particulate matter (PM) filter filters PM from exhaust gas and includes N zones. Each of the N zones includes an inlet area that receives a portion of the exhaust gas. N is an integer greater than one. The first heater element includes a contact area that heats exhaust gas input to an inlet area of a first one of the N zones. The second heater element includes a second contact area that heats exhaust gas input to an inlet area of a second one of the N zones. A ratio of the contact area of the first heater element to the inlet area of the first zone is greater than a ratio of the contact area of the second heater element to the inlet area of the second zone.

Abstract: The present invention relates generally to the field of emission control equipment for boilers, heaters, kilns, or other flue gas-, or combustion gas-, generating devices (e.g., those located at power plants, processing plants, etc.) and, in particular to a new and useful method and apparatus for preventing the plugging, blockage and/or contamination of an SCR catalyst. In another embodiment, the method and apparatus of the present invention is designed to protect an SCR catalyst from plugging and/or blockage from large particle ash that may be generated during combustion.

Abstract: Cellular ceramic articles are manufactured from a green cellular ceramic body that includes a binder material and a plurality of channels. At least one of the channels is coated with a slurry that includes a green coating composition and a solvent to form a coating layer. The binder material is insoluble in the solvent.

Abstract: Disclosed is an apparatus and method whereby small particle nano materials may be contained in a highly functional package for fluid separation and/or purification applications. The package consists of an aerogel material which uniformly surrounds the nano-particles. The aerogel may be composed of carbon, silicon, or silicon oxide or other suitable materials. The morphological features of the aerogel may be tailored specifically towards fine particle and ultrafine particle containment while maintaining uniform fluid flow in separation and purification processes. The aerogel may be bonded to a suitable rigid housing by chemical or mechanical means.

Abstract: Detecting ash in a diesel particulate filter includes receiving data indicative of signal attenuation for ash-responsive and ash-insensitive RF signals transmitted through a diesel particulate filter containing trapped soot and ash. A difference between the RF signals, such as a difference in signal attenuation, may be leveraged to detect a relative ash loading state or a change in relative ash loading state of the diesel particulate filter, and responsively indicate that filter cleaning is needed.

Abstract: A honeycomb body includes at least one housing and metal foils forming a channel structure. The channel structure is fastened to the housing by a multiplicity of linear brazed connections. A production method for providing the linear brazed connections between the channel structure and the housing and an exhaust gas treatment component having the honeycomb body in an exhaust system of a motor vehicle, are also provided.

Abstract: The invention relates to a porous membrane having a particle filtration value of at least 10 under U.S. Military Standard MIL-STD-282 (1956), where the porous membrane is a polyethylene membrane. The membranes according to the invention are particularly useful for filters such as ASHRAE filters, HEPA filters and ULPA filters for example in heating, ventilating, respirators and air conditioning applications.

Abstract: A filter medium (100) having an inflow side (110) and an outflow side (120) defining a flow direction (190). The filter medium comprises at least n consecutive layers Lx of fiber media, x varying from 1 to n, n being more than or equal to 2. L1 (101) is the layer of the n consecutive layers closest to the inflow side of the filter medium and Ln (103) is the layer of the n consecutive layers closest to the -outflow side of the filter medium. For all layers Lx of the at least n consecutive layers, the ratio Hx/(kx*Ax) is substantially identical, wherein Hx is the average thickness of the layer Lx in flow direction, Ax is the average surface area of cross sections according to planes perpendicular to the flow direction, and kx is the permeability coefficient of this layer Lx. The fiber media of at least part of the layers of the filter medium comprises metal fibers.

Abstract: There is provided a silicon carbide porous article containing silicon carbide particles as an aggregate and an oxide as a bonding material. The silicon carbide particles are bonded together in a state that pores are held among the silicon carbide particles, and an additive amount of the oxide is 0.5 g/m2 or more and below 3.0 g/m2 with respect to a surface area of the silicon carbide particles.

Abstract: A method and system remove contaminants from a vapor. In one embodiment, the system includes a contaminant removal system having a vacuum box. A contaminated vapor from process equipment is introduced to the vacuum box. The contaminated vapor includes steam and hydrocarbons. The vacuum box includes a water removal device. The water removal device removes water from the contaminated vapor to provide water and a reduced water vapor. The water and the reduced water vapor are removed from the vacuum box.

Abstract: A motor-vehicle engine system comprises an envelope configured to transmit exhaust. The envelope encloses a first array of filtration cells downstream of a second array of filtration cells. The system further comprises a fuel injector configured to increase a temperature in the envelope when soot is evenly distributed between the first and second arrays in order to address thermal gradients.

Abstract: An exhaust gas purifying system includes an exhaust gas purifying apparatus provided with a gas inlet side connected to an inlet pipe and a gas outlet side connected to an exhaust pipe. A holding sealing material of the exhaust gas purifying apparatus has a first side face and a second side face. The first side face is positioned on the gas outlet side and has a first slanting face formed on the first side face. The first slanting face has a first inside end point and a first outside end point. The first inside end point is positioned between the gas inlet side and the first outside end point. The first slanting face extends from the first inside end point to the first outside end point and is tilted relative to an end face of an exhaust gas treating body of the exhaust gas purifying apparatus.

Abstract: An exhaust particulate filter for an engine system includes an array of filter cartridges positioned within a shell, each of the cartridges having an electrically powered heating element coupled therewith. Exhaust gases may be distributed among the cartridges according to a single distribution pattern, and the filter can be regenerated without diverting, dividing or bypassing exhaust gases from the filter. The filter cartridges may be cylindrical or wedge-shaped, or of a variety of other configurations. Regeneration may take place according to a non-axial regeneration propagation profile. Other aspects include feedback control and feedforward control of regeneration based on sensing an electrical resistance property of each of the electrically powered heating elements.

Abstract: A method of firing a green structure to produce a ceramic structure may comprise heating a firing environment during a first stage of firing of a green structure over a first timed temperature cycle having an average ramp rate sufficient to substantially complete burnout of organic material prior to initiation of clay dehydration proximate a core of the ceramic structure. The method may further comprise heating the firing environment during a second stage of the firing over a second timed temperature cycle having an average ramp rate that is faster than the average ramp rate of the first timed temperature cycle.

Abstract: A method for producing a metallic honeycomb body from metallic layers with channels through which an exhaust gas stream can flow, includes providing the honeycomb body with a coating. Such honeycomb bodies are used in exhaust gas systems of preferably mobile internal combustion engines as catalyst carrier bodies, filters, mixers and/or adsorbers. The coating is provided in a two-stage application and enables the production of exceptionally advantageous coated metallic honeycomb bodies, which are distinguished by a large coating surface and a low flow resistance. At the same time, an exceptionally large surface enlargement is provided in the honeycomb body while using a smaller amount of coating. A honeycomb body is also provided.