Abstract: A catalytic converter or diesel particulate trap having a monolithic ceramic element or diesel particulate filter mounted within a metallic casing by a resilient, flexible, erosion resistant mounting composite. The erosion resistant mounting composite is comprised of an intumescent mounting mat protected on at least one lateral edge by a strip of metal fabric.

Abstract: A gas cleaning system includes a combustion equipment, a heat exchanger for cooling a flue gas discharged from the combustion equipment, an exhaust fan sucking the gas from the heat exchanger and directing the gas into a bubbling dust separator submerged in a water tank so that the dust laden in the gas will be rubbed off when the gas is bubbled through the separator to discharge a clean gas from a stack mounted in the water tank for preventing air pollution.

Abstract: NO.sub.x and SO.sub.x molecules are separated from a combustion exhaust gas stream by directing the exhaust gases through an elongated passageway, establishing a logarithmic potential across that passageway which will cause separation of the NO.sub.x and SO.sub.x molecules from the exhaust gases based on their permanent dipole moments, the potential being established between spaced conductors and at a relatively low voltage level sufficient to generate a capacitance between the conductors sufficient to cause separation of the molecules from the exhaust gas stream for recovery in a separate chamber.

Abstract: Exhaust gases from a process fired boiler are diverted from a stack prior to emission to the atmosphere through a duct system to a plurality of series connected heat exchangers. The exhaust gases are progressively reduced from an elevated temperature, for example in the range between about 350.degree.-525.degree. F., in stages to an ambient temperature of about 50.degree. F. At each stage heat from the exhaust gases is transferred from the gases to another medium, such as water, which is fed back to the boiler to reduce the energy cost of operating the boiler. At ambient temperature the exhaust gases are subjected to an atomized spray of a reagent solution that absorbs the contaminants in the exhaust gases. Absorption of the contaminants into solution with the atomized reagent spray is promoted by contact of the spray and exhaust gases on the surface of a fibrous batting.

Abstract: A device for removing solid particles, in particular soot particles, from the exhaust gas of internal combustion engines includes a centrifugal separator or cyclone 11 to separate the untreated gas flow 10 into coaxially removed pure gas flow 23 and a particle-enriched carrier gas flow 24 and includes a combustion device 12 for burning the solid particles carried in the carrier gas flow.

Abstract: Soot particles are separated from diesel exhaust gases and burned by passing them in a direction of flow through a cellular filter open at both ends and comprised of honeycomb-shaped cells, and subjecting the soot particles to an electric or magnetic field before the soot particles are burned. The honeycomb-shaped cells are very wide transversely to the direction of flow and very flat in the direction of flow, and the webs of the honeycomb-shaped cells extending in the direction of flow are very thin.

Abstract: A filtering element for use in trapping particulates from a diesel exhaust gas, made up of a porous refractory ceramic body of predominant open-cell porosity prepared by firing an aluminosilicate hydrogel-bonded porous ceramic composition, and preferably further containing on the filter inlet and/or outlet surface thereof an integral thin porous ceramic membrane layer having pores whose average diameter is less than that of the pores in the body and at the other surfaces.

Abstract: The particle filter for waste gases includes a porous filter body traversed by honeycomb-form channels and resistance heating elements for burning-off of soot particles. The resistance heating elements are in a zone adjacent an entry end of the filter body and include perforated strips of sheet metal including longitudinal strips which are bent into U-shaped heat conductors. Cross strips create, on destruction of individual heat conductors, an electrical current detour path. The resistance heating elements are inexpensive to produce and easy to install.

Abstract: A modular manifold arrangement for distributing a flow of a gas in a reactor. The manifold arrangement includes a tank or a container, within the walls of which a bed for a granulated catalyst or substance, with which the gas is to react, is arranged. The bed is at least partially surrounded by gas-permeable gratings. In order to provide elements that may pass through a narrow manhole and from which it is possible to construct passages for providing a uniform flow through the reactor bed, the manifold arrangement includes an elongate tube. The tube is closed at one end and open for inlet of gas at the other end. The tube further has a gas-impermeable rear sidewall with a shape corresponding to the walls of the tank and a front side which is a gas-permeable grating having a sheet or plate provided therein with a large number of nozzles.

Abstract: A thin, convoluted wall member disposed upstream of the inlet of a diffuser generates large-scale vortices having axes in the downstream direction. The vortices enhance mixing within the diffuser and can also energize the boundary layer, thereby improving diffuser performance and delaying the onset of stall. Greater diffusion angles without stall are possible. The member itself creates low losses.

Abstract: A device for use in heating or incineration plants for use as a waste gas filter to eliminate and/or convert harmful elements in the waste gas is disclosed. The device of the subject invention can eliminate soot and soot-like products, or it can serve as a heat exchanger or as a mixing component for a furnace. The device of the subject invention comprises a sintered body made of one or more compression molded highly heat resistant sintered parts. The sintered body manifests high porosity and/or a multitude of intake and outlet channels.

Abstract: A device for collecting and removing particulate emissions from diesel engine exhaust before the exhaust is discharged into the atmosphere. The device comprises an enclosure having an inlet, an outlet, a main flow path, containing a medium for trapping and removing particulate material, a by-pass for diverting the exhaust flow around the main flow path, a heating unit to initiate forced regeneration of the medium and a control system for regulating the forced regeneration of the medium and the flow through the main and by-pass flow paths. In a first aspect of the invention the regeneration of the medium and the flow through the main and by-pass flow paths are regulated by a pair of valves, a thermocouple, engine sensors, and a back-pressure switch. In a second aspect of the invention, a single valve and microcomputer are used in place of the pair of valves and in conjunction with the thermocouple regulate the flow through the main and by-pass flow paths and the regeneration of medium.

Abstract: An exhaust processor is provided for filtering particulate matter from a combustion product. The exhaust processor includes a partition situated inside a housing to form a filtering region and a bypass region in an upstream portion of the housing. A substrate is mounted in the filtering region for solid particle filtration. A muffler is situated in a downstream portion of the housing spaced apart from the partition so that the entire spacial volume of the muffler can be utilized by combustion product passing through either the filtering region or the bypass region.

Abstract: A ceramic particulate trap is disclosed and manufactured from a plurality of ceramic support plates each having a plurality of grooves in an upper surface and a lower surface thereof extending in a direction of fluid flow. Each groove in the upper surface of the ceramic support plate having an open upstream end and a closed downstream end while each groove in the lower surface of the ceramic support plate includes a closed upstream end and an open downstream end. A ceramic foam layer is then placed on and supported by the ceramic support plates and spans the open surface of the plurality of grooves formed in the upper surface of the support plate. The support plate being manufactured by conventional relatively inexpensive extrusion processes provides structural support for the ceramic foam layer.

Abstract: An emission control unit is mounted in the exhaust line of a fossil fuel internal combustion engine and includes a tubular housing in which a lime sleeve is received. The sleeve has an axial opening through which a corona wire extends. Exhaust gasses pass through the sleeve along the wire. Placing a charge on the wire drives pollutants in the exhaust laterally outwardly into the sleeve at a direction which is 90.degree. to the direction of exhaust travel. The sleeve chemically interacts with the pollutants and neutralizes them with little hazard to the environment.

Abstract: This invention relates to a muffler having a purifying system for separating solid contents and eliminating poisonous gases such as carbon monoxide by means of an electrolysis apparatus which continuously provides oxygen separated from water to react with the carbon monoxide into carbon dioxide.

Abstract: A filter system for removing particulates from exhaust gases of an internal combustion engine, in particular a diesel engine, having at least one filter member formed by filter channels in the configuration of a honeycomb, and made of porous filter material, in which the region of the inlet openings of the filter channels open on the gas intake side, electrical resistance looped heating elements being arranged that are connected via a lead-in and a lead-out to a power supply. A positive positioning of the heating elements and their connections is assured and false contacts, such as short-circuits, are avoided. The resistance heating elements are connectd to a support element connected to the power supply, and the position of the support element can be adjusted three-dimensionally while maintaining a maximum distance of about 30 mm. from the surface of the filter member at its gas intake side.

Abstract: A soot filtering unit in the exhaust gas system of a diesel internal combustion engine that includes at least two parallel soot filters. For regeneration, a regeneration device, having at least one burner and control flap, is provided upstream from the soot filters of the soot filtering unit. The burner(s) provided in the soot filtering unit supplies high temperature gases for the regeneration of the soot filters, and exhaust gas from the exhaust gas pipe is fed thereto as an oxygen carrier for the combustion process. According to a first embodiment, a single burner is provided for all soot filters to be regenerated and the burner does not lie directly in the pipes of the exhaust gas pipe that conveys exhaust gas to the soot filters. Preferably, exhaust gas is supplied to the burner(s) through separate exhaust gas feed pipes but, alternatively, a separate burner can be located directly in each branch of the exhaust pipe upstream of the respective soot filter provided therein.

Abstract: A soot filter for Diesel engines has a housing (2), in which filter material (11) of mineral fibers or yarns is arranged on a support (7). To prevent the filter material from losing its three-dimensional structure necessary for the filtration in the event of yarn breakage, it is formed at least partly or completely of knitted fabric (12), which maintains its internal coherence in the vicinity of individual loops even in the event of yarn breakage because of the interlacing of the yarns in the adjacent loops.

Abstract: A soot-filtering unit for an exhaust section of a diesel internal combustion engine with a supercharging device. The soot-filtering unit has at least on soot filter in an exhaust line and a regeneration device for the soot filter which includes at least one burner. The configuration of the unit connects an air intake of the burner of the regeneration device to the supercharging device so that the burner is supplied with a portion of the air charge from the supercharging device of the diesel internal combustion engine. In this connection, the configuration can be done in such a way that the burner is supplied exclusively with air from the air charge produced by the supercharging device, or so that the burner is supplied with a mixture of air from the air charge and exhaust gas from the exhaust gas line.

Abstract: An exhaust emission gas control device having a first filter trapping particulates contained in an exhaust gas, and a second filter removing offensive odor components in the exhaust gas. The first filter is a honeycomb type having a cordierite substrate on which .tau.-alumina is coated. The second filter is provided downstream of the first filter, and is formed by an ion-exchange of copper on a synthetic zeolite rich in silica to form copper ions thereon.

Abstract: A plate-like filter element includes a plate-like body made of a gas-permeable porous material having a pair of opposing end faces, a plurality of through holes formed in the plate-like body from one of the end faces to the other, wherein the plurality of through holes have inner wall surfaces which extend out toward both side surfaces of the plate-like body, the side surfaces being closer to the through holes. A filter unit is formed by a plurality of the plate-like filter elements stacked up in parallel to each other so that the end faces of the stacked filter elements are aligned, and passages separated from the through holes by the porous walls of plate-like bodies are formed between the adjacent filter elements. A filter device includes a metallic casing with an inlet for a dust-containing gas, an outlet for clean gas and an outlet for dust, which firmly support the filter unit therein.

Abstract: Cross flow diesel particulate traps are disclosed in which a cylindrical canister contains a plurality of individual ceramic trap elements. The canister is provided with inlet openings along one side and outlet openings along another side which respectively communicate with inlet and outlet spaces formed between individual ceramic trap elements. The traps are provided with inlet and outlet plenums which communicate with the respective canister openings for directing exhaust gases through the canister and for collecting the exhaust gases. In one embodiment, the inlet plenum is divided by partitions into zones and a diverter valve directs regeneration gases to selected zones canister regeneration. Ceramic trap elements are disclosed adapted for use in a diesel exhaust gas particulate trap formed with a disc-shaped body of open cell ceramic material with opposite faces terminated by partially surrounding peripheral walls which define inlet and outlet gaps at the respective sides of the element.

Abstract: Fine particles including volatile components and combustible non-volatile components are removed from exhaust gas by a method comprising providing at least two paths for the gas each with a filter capable of trapping the particles and conducting a process of trapping the particles and a process of burning the trapped particles separately and alternately in different filters with an apparatus including at least two fine particle trapping apparatus each constituted as a pipe-like structure having its one end connected with a pipe for untreated exhaust gas, its other end connected with a pipe for treated exhaust gas and a filter made of incombustible material and capable of trapping the particles disposed between the two ends, switchover valves for selectively opening and closing the two ends, and heaters for heating the filters to a prescribed temperature.

Abstract: An exhaust gas purifying apparatus comprising a first and a second casings having expansion chambers, respectively, a third casing arranged between the first and second casings to form a passage therebetween, an inlet pipe introducing the exhaust gas into the first expansion chamber, and an outlet pipe discharging the exhaust gas from the second expansion chamber, whereby a muffler is constituted. The apparatus also comprises a filter arranged in the third casing to trap particulates in the exhaust gas, and a heater arranged adjacent to the filter on the side of the second expansion chamber to burn the particulates deposited on the filter, to regenerate the filter. A flow control unit, comprising a bypass and a valve therein, is arranged such that the exhaust gas normally flows through the filter and the heater, and when the filter is regenerated, at least a part of the exhaust gas flows in reverse through the heater and the filter. This exhaust gas purifying apparatus is built-in to the muffler.

Abstract: In a filter consisting of hollow cylindrical open-pore ceramic foam and an end plate made of gas-impermeable material, as an insert in a filter cup for cleaning exhaust gases of diesel engines, in which the exhaust gases flow through the active filter section essentially perpendicularly to the cylinder axis, a larger ceramic foam portion such as is used e.g. as an exhaust filter for a diesel engine for a truck or passenger service bus can be made from one piece only with increased requirements, because the necessary dimensional accuracy necessitates increased requirements, and hence the economy of using the ceramic foam is greatly impaired. Also, the back pressure increases considerably.

Abstract: The invention is a catalytic air cleaner made from a double spiral formed by winding together two strips of metal. The strips are coated with a combustion catalyst. One spiral passage leads into the core of the spiral and the other passage leads out of the core. An electric resistance heater supplies heat at the core of the spiral. The outflowing air transfers this heat to the inflowing air, through the walls of the spiral. Because of this heat exchange, the difference between the temperature of the air at the core and the air entering the spiral can be many times the difference between the temperature of the air entering and leaving the spiral. Contaminants in the air are burned on the catalytic surface with a minimum input of heat. The invention also includes a method of designing a spiral having optimum characteristics.

Abstract: A method and apparatus for removing soot from an exhaust gas stream wherein the exhaust gas stream is contacted with water to produce a substantially water saturated exhaust gas stream, particles and droplets in the water saturated gas stream then are electrically charged to produce a gas stream containing electrically charged particles and droplets, and an electric field is established for electrostatically attracting and de-entraining soot and soot containing water droplets from the gas stream containing electrically charged particles and droplets to produce a substantially soot free exhaust gas stream. The present invention includes a precipitator wherein the insulators are positioned in low dew point relatively clean locations and, in one embodiment, includes the use of the exhaust gas stream to maintain the temperature level of the insulators above dew point.

Abstract: In the case of an electrostatic diesel exhaust filter the corona electrode and the collecting electrode are supplied with direct voltage with an AC component so as to obtain and even discharge. A catalyst, preferably in a noble metal catalyst, may placed upstream from the electrostatic filter in the exhaust gas pipe so that the hydrocarbons also contained in the exhaust gas may be oxidized.

Abstract: Apparatus and process for removing particulates from a flow of exhaust gas exhausted from a diesel engine and trapped in a filter including a compressor which produces dry compressed air and transports it into at least one oxygen saturation container provided with an oxygen adsorber adapted to receive the compressed air and adsorb oxygen from it. The oxygen enriched air thus generated is directed through a valve and conduit into a section of the particulate filter wherein the high partial pressure of oxygen causes particulate combustion. Each section of the trap is exposed in turn to the oxygen enriched air thus effecting a complete regeneration of the filter. Oxygen depleted compressed air is directed through the valve and separate conduit to a reservior where it can be used for actuating the air brakes of a vehicle or other compressed air uses.

Abstract: An apparatus for cleaning the exhaust gases of diesel engines, and especially for removal of soot particulates, utilizing series connected filter elements installed in the cross section of a housing traversed by the exhaust gas, wherein at least one filter element carrying a catalyst that lowers the ignition temperature of the soot and assists in soot burn off alternates several times with at least one filter element carrying a catalyst that assists the combustion of gaseous pollutants.

Abstract: Muffler-filter apparatus for reducing both sound and particulates from exhaust gases from an engine. The apparatus includes resonating chambers, flow distribution means and a cellular ceramic core filter module. Filter regeneration mechanism includes a heating element for heating the carbon on the inlet end of the ceramic core to combustion temperature. Particulate ignition resulting in regeneration occurs when combustion air is provided. In alternate embodiments, combustion air first flows through a preheater system. A processor unit with particular logic controls the apparatus. The particular method of regeneration depends on the application in which the muffler-filter is used.

Abstract: A system for the regeneration, by oxidation, of the particulates deposited in a particulate filter trap of an internal cumbustion engine provided for purifying the engine exhaust gas, in which the thickness of the particulates deposited in a given area in the trap is determined relative to a predetermined thickness in excess of which the filter trap will operate inefficiently, and the excess thickness being reduced by regeneration.

Abstract: A muffler purifying device for combustion gases of general application including an expanded external casing having anterior and posterior end intakes equipped with nozzles, one connected to the exhaust pipe and the other for discharging gases, between which is included a unit of elements for retaining impurities and purifying the gases in the form of a cartridge which is removable from the external casing through an aperture located at the posterior end, equipped with a removable cover. The removable cartridge has a tubular wall with its own anterior end intake having an aperture defining an internal nozzle into which the exhaust pipe extends.

Abstract: Meander-shaped exhaust gas ducts pass through a soot burn-off filter made of porous ceramic filter material. Catalytically coated blind ducts branch from each of the outer bends to receive and combust solid combustion residues from the exhaust gases. The residual gases produced in the blind ducts by the oxidation of the combustion residues pass through the filter material into adjacent discharge ducts and are transported from there to the outside of the filter. In this way the exhaust gas ducts remain largely free of solid combustion residues, display no clogging phenomena and therefore keep the exhaust gas backpressure low. This improves the starting behavior of an engine, achieves more favorable warm-up behavior and has a positive influence upon the response behavior of an exhaust gas turbocharger.

Abstract: In a filter consisting of hollow cylindrical open-pore ceramic foam cylinder elements and an end plate made of gas-impermeable material, as an insert in a filter cup for cleaning exhaust gases of diesel engines, in which the exhaust gases flow through the active filter section essentially perpendicularly to the cylinder axis, bending moments which lead to breakage of the ceramic foam cylinder elements occur during fitting of the elements due to lack of surface evenness and plane-parallelism of the end faces. A filter of the aforementioned kind, in which the end faces of the ceramic foam cylinder elements are provided with temperature-resistant and thermal shock-resistant layers of material which are plastic at room temperature, avoids the bending moments.

Abstract: For generating an electrostatic field, a coagulator for an exhaust gas scrubbing system for internal combustion engines has an electrode, which extends in an insulated manner within a housing. The electrode is braced on the housing via at least one insulator. To prevent the formation of a short-circuiting bridge between the electrode and the housing as a consequence of the deposition of so-called agglomerates on the insulator surface, the insulator is heated to a surface temperature of over 400.degree. C. In order to attain an extremely compact insulator and so that heating it will require little energy, the insulator is embodied in disk-like fashion and has a spiral heating conduit, through which hot gases flow, disposed in its interior. The hot gases are diverted from a partial flow of the engine exhaust gas, or are drawn from the exhaust gas of a soot burner.

Abstract: An exhaust emission purifier for a diesel engine has a particulate trap disposed in the exhaust emission passage of the diesel engine for entrapping particulates contained in exhaust gases emitted from the diesel engine, the particulate trap being housed in a canning container. An electric heater is disposed in the canning container upstream of the particulate trap for heating the exhaust gases to a temperature which is high enough to burn particulates entrapped by the particulate trap. A heat conductor/converter device disposed in the canning container upstream of the electric heater for absorbing heat radiated from the electric heater and discharging the absorbed heat into air flowing from a position upstream of the canning container into the particulate trap. The heat generated by the electric heater is efficiently utilized to heat the air introduced into the particulate trap for reliably and quickly igniting and burning the entrapped particulates.

Abstract: A filter device for trapping particulates for diesel engine exhaust gases includes an electrical heating element to heat the face of the ceramic filter. A porous ceramic disc is place on the side of the heating element opposite the filter. It has been found that the disc keeps the temperature of the heating element more uniform and reduces the time to particulate ignition on the front face of the filter.

Abstract: A diesel internal combustion engine in the exhaust gas line system of which is arranged a device for the ionization of soot particles contained in the exhaust gas and a device for the separation thereof from the exhaust gas stream. In order to be able to realize a low structural expenditure, the device for the ionization of the soot particles is constructed as a light source emitting ultraviolet light.

Abstract: In an apparatus for treating an exhaust gas from a diesel engine, including a filter unit in an exhaust gas passage for the diesel engine, the filter unit having a honeycomb structure wherein a plurality of cells are divided by cell walls having a filtration function and extend in the same direction as one another, predetermined cells being closed at one end, and the remaining cells being closed at the other end; the improvement comprises: back washing gas flow generating means for generating a gas flow at appropriate intervals so as to pass through the cell walls in the direction opposite to the flow of the exhaust gas flow, and a recollecting unit for particulates, which is provided in the exhaust gas passage at a position upstream to the filter unit.

Abstract: An exhaust gas emission control device comprising a filter provided in the exhaust passage, a heater provided near the filter, first and second passage bypassing the filter and the heater, a single first valve upstream of the filter a single second valve downstream of the filter, and a controller controlling the first and the second valve. When trapping particles, one of or both of the first and second valves closes the first and second passages, and the first and second valves open the exhaust passage, whereby exhaust gas flows through the filter and the heater. On the other hand, when regenerating the filter, the heater is switched ON, the first valve shuts the exhaust passage and the second valve is open to a predetermined degree, so that exhaust gas flows into the first passage, and a part of the exhaust gas flowing via the first passage flows through the heater, the filter, and the second passage.

Abstract: A regenerable filter for use with exhaust gas streams containing combustible particles, the filter including a filter medium upon which the particles build up as the filter medium removes the particles from the gas stream, a scraper to remove the particles, except for a precoat, from the filter medium, and a burner to burn the removed particles outside the main exhaust gas exit.

Abstract: A regenerable particulate trap for continuously separating particulates from, for example, the exhaust gas from a diesel engine, is characterized by a rotatable trap member mounted for rotation in the exhaust gas stream. Disposed over the face of the rotatable trap member on the upstream side is an enclosed, stationary chamber which isolates a portion of the rotatable trap member from the exhaust gas stream and directs a regenerating fluid through the rotating trap member, co-currently to the exhaust gas stream, to continuously remove the trapped particles by, e.g. burning in an oxygen-containing gas.

Abstract: An apparatus which is disposed in an exhaust system of a diesel engine for treating particulate emissions contained in exhaust gas is disclosed. The apparatus comprises a splittable casing body including an inlet-side casing portion and an outlet-side casing portion, an inlet pipe secured to the inlet-side casing portion, an outlet pipe secured to the outlet-side casing portion, a partition plate detachably retained between the inlet- and outlet-side casing portions such as to divide the inside of the casing body into two compartments, and at least one filter assembly detachably mounted in an opening provided in the partition plate. The filter assembly is defined by a honeycomb-type ceramic filter which is accommodated in a metallic casing and surrounding by a cushioning material, and which has a catalyst carried on its internal passage wall. The catalyst enables a lowering in the combustion temperature of the particulate emissions.

Abstract: The invention relates to an exhaust gas muffler for a two-stroke engine of a portable handheld tool such as a chain saw. The exhaust gas muffler includes a catalyzer wherein high exhaust gas temperatures are developed because of the exothermal reaction which takes place therein. The catalyzer is located in the forward portion of a gas-tight hollow body mounted in the housing of the muffler. The hollow body has a tapered portion which extends out of the housing in the direction of the exhaust gas flow. In this way, the surface temperature of the muffler housing is reduced.

Abstract: Muffler apparatus for reducing both sound and particulates from exhaust gases from an engine. The apparatus includes resonating chambers, flow distribution structure and a cellular ceramic core filter module. Filter regeneration mechanism includes a heating element for heating the carbon on the inlet end of the ceramic core to combustion temperature. Particulate ignition resulting in regeneration occurs when combustion air is provided; in alternate embodiments, combustion air first flows through a preheater system. A processor unit with particular logic controls the apparatus.

Abstract: An apparatus for treating the exhausted smoked from a chimney by precipitation has a smoke collecting device placed at the exhaust of the chimney and a vapour injecting nozzle to spray high speed vapour over the smoke from the chimney into the collecting device. A water tank for receiving the mixture of the vapour and the smoke and precipitating the same with the water contained therein is connected to the collecting device by a conduit. The conduit is provided with suction means to accelerate the flow of the mixture of the vapour and the smoke to the tank. The water tank may also be equipped with set of vapour spraying devices and a smoke filtering web for preventing the possible leakage of smoke from the water tank. A preferred embodiment has two opposing collecting devices, each provided with its own conduit, suction means, and tank.

Abstract: An apparatus for removing solid particles, especially soot particles, from the exhaust gases of an internal combustion engine includes a separator that divides the flow of exhaust gases into a largely particle-free primary flow and a particle-enriched secondary flow. The secondary flow is delivered to a disposal device, which has a combustion chamber and a pilot burner for producing a flame that burns off the solid particles. To improve the efficiency of the apparatus by reducing the heating output required, a filter is provided in the combustion chamber, which divides the combustion chamber into a filter pre-chamber and after-chamber. The burnoff flame of the pilot burner burns into the filter pre-chamber, and the burnoff gases are removed via an outlet opening disposed in the filter after-chamber. The secondary exhaust gas flow is delivered to the filter pre-chamber with a tangential inflow direction.

Abstract: A ceramic honeycomb filter for purifying exhaust gases from combustion engines includes a ceramic honeycomb structure formed by extruding and having a number of through-passages alternately closed at their ends by ceramic closure members. The through-passages formed by partition walls for capturing fine particles in the exhaust gases accumulated on the partition walls. The ceramic honeycomb filter comprises porous ceramic layers provided on the partition walls over a distance of 1/10-8/10 of an effective length of the filter from outlet ends of said through-passages for the exhaust gases.