Abstract

An electric exhaust-gas heating device which can be installed transversely to an exhaust gas flow in an exhaust gas line and through which the exhaust gas to be treated can flow axially is provided with a discoid, gas-permeable, electrically conductive, porous heating element (12) through which exhaust gas can flow axially and which forms a serpentine resistance heating conductor whose adjacent, parallel, elongate conductor segments (26, 28) are spaced apart and laterally delimited by gaps axially extending through the heating element (12). Electrode connections (18, 20) are also provided, which form between them a current path in which the conductor segments (26, 28) are located. The heating element (12) has a circumferential edge (14) having an increased density. Proceeding from each of the two electrode connections (18, 20), a first conductor portion (26) is defined in the current path since the circumferential edge portions (46, 48) into which the first conductor portion (26) transitions at its opposite ends are separated from one another. At least one of the two first conductor portions (26) has a larger cross-section transversely to its longitudinal extent and a lower electrical resistance than additional conductor portions (28) located between the first conductor portions (26).

IPC Classes  ?

• F01N 3/00 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust

Abstract

An electric heating device for heating an exhaust gas stream may have a housing, an electric heating element and at least one support rod connected to the heating element and having two opposite ends arranged on the housing. The electric heating element and support rod may be accommodated in the housing. The support rod may be movably arranged on at least one of its ends in a sliding bearing to compensate for a thermally induced change in shape of the support rod. The sliding bearing may be fixedly connected to the housing. The heating device may be provided for use in an exhaust system such as in a motor vehicle, which in particular can handle mass flow rates of more than 600 kg/h.

IPC Classes  ?

• F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
• B01D 53/94 - Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes

Abstract

The invention relates to a pressure vessel unit (10) for storing a fluid, in particular hydrogen, which unit is provided with a pressure vessel (12) and an injector (14), which is designed for filling the pressure vessel (12) with the fluid, wherein the injector (14) comprises a one-piece main line (16), which runs from outside into the interior of the pressure vessel (12) and has a main outflow opening (18) at its outflow end via which the fluid can flow from the main line (16) into the interior of the pressure vessel (12), and wherein the main line (16) comprises at least one auxiliary opening (24) inside the portion of the main line (16) that projects into the pressure vessel (12), via which auxiliary opening the fluid can flow from the interior of the pressure vessel (12) into the main line (16), and vice versa.

IPC Classes  ?

• F17C 5/06 - Methods or apparatus for filling pressure vessels with liquefied, solidified, or compressed gases for filling with compressed gases

Abstract

A pressure compensation device for a component having a sealed interior, in particular for a battery housing, having a housing, a movable element arranged therein and adapted to be exposed on one side to a pressure prevailing in the interior and on the opposite side to an external pressure outside the component, wherein the movable element is displaceable over a distance specified by design, in order to prevent an overpressure from building up inside the interior, wherein the movable element includes a predetermined breaking point which exposes an outflow opening when a predefined pressure difference between the pressure in the interior and the external pressure is exceeded. A battery housing having a relief opening and such a pressure compensation device.

IPC Classes  ?

• H01M 50/342 - Non-re-sealable arrangements

Abstract

A heating device, and a method of manufacturing the device, comprises an electrically conductive heating foam, a current conducting foam and two electrodes. The heating foam is divided by interruptions into sections, providing a predefined current path extending from a current lead-in point to a current lead-out point. The electrodes are electrically connected to the current lead-in and lead-out points, respectively, wherein the heating foam is provided on an outside at least in sections with the current conducting foam forming current conducting sections that electrically connect sections of the heating foam to one another. The current lead-in or lead-out point is provided as a connection section of the current conducting foam and extends in a circumferential direction along at least one current conducting section, but is electrically insulated therefrom. The two electrodes are spaced apart from one another in the circumferential direction by less than 180 degrees.

IPC Classes  ?

• F24H 3/00 - Air heaters
• H05B 3/12 - Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
• B01D 53/94 - Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes

Abstract

An exhaust gas treatment device for a motor vehicle has a housing, which defines an exhaust gas duct through which the exhaust gas flows, and an electric heating device which extends through the exhaust gas duct and through which exhaust gas flows. The electric heating device has a heating component attached to a carrier structure, the heating component being attached to the carrier structure, and first and second electrodes which are attached to the heating device and make electrical contact with the heating device. The first electrode extends as far as into a central region of the heating device, and the second electrode extends as far as into an edge region of the heating device, as viewed in the exhaust gas flow direction in the exhaust gas duct.

IPC Classes  ?

• F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion

Abstract

A heating device for an exhaust system has an electrically conductive heating component through which exhaust gas to be treated can flow and which is formed by one or more current-carrying lines forming a current path in the form of a resistance heating element. In addition, the heating device has at least one stabilization part which extends over at least a portion of the heating component, is arranged so as to be offset in the flow direction in relation to the heating component, and is mechanically coupled to the heating component in order to stabilize the latter in the flow direction.

IPC Classes  ?

• H05B 3/06 - Heater elements structurally combined with coupling elements or with holders

Abstract

The invention relates to an exhaust system (16) for an internal combustion engine, having an exhaust line (20) from which a bypass line (22) branches at a branch point (26), wherein the bypass line (22) discharges into the exhaust line (20) again downstream of the branch point (26). The exhaust system (16) has an exhaust pipe (28) which forms the exhaust line (20) upstream and downstream of the branch point (26) and comprises at least one lateral opening (34) at the branch point (26), and has a gas-conducting inlet unit (50) in the bypass line (22), wherein the inlet unit (50) fully surrounds the exhaust line (20) in the region of the opening (34). The inlet unit (50) is in fluid connection with the exhaust line (20) such that exhaust can be guided from the exhaust line (20) into the inlet unit (50) and thus into the bypass line (22). The invention furthermore relates to a vehicle.

IPC Classes  ?

• F01N 3/02 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
• F01N 5/02 - Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy the devices using heat
• F01N 13/08 - Other arrangements or adaptations of exhaust conduits
• F01N 13/14 - Exhaust or silencing apparatus characterised by constructional features having thermal insulation
• F01N 13/18 - Construction facilitating manufacture, assembly or disassembly

Abstract

The invention relates to an electric gas flow heater (20) having a latticed heating element (24) through which exhaust gas can flow axially, which forms an electric resistance heater, and which has radially successive layers (S1-S6) of tape-like material (B1; B1-B6), wherein the layers (S1-S6), when the heating element (24) is viewed axially, are bent in an undulating manner and have valleys (30) and peaks (32), wherein the peaks (32) and valleys (30) of the layers (S1-S6) lying between the radially outermost and the radially innermost layer (S6, S1) are fixed to each radially adjacent layer (S) so that throughflow openings (34) are formed between the layers (S1-S6), wherein the wavelengths of the layers (S1-S6) increase radially outwards.

IPC Classes  ?

• F01N 13/00 - Exhaust or silencing apparatus characterised by constructional features
• F01N 3/027 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using electric or magnetic heating
• F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
• F01N 3/28 - Construction of catalytic reactors

Abstract

An exhaust gas treatment device for a motor vehicle has a housing (14) which delimits an exhaust gas duct (13) through which the exhaust gas flows, an electric heating unit (12), which extends through the exhaust gas duct (13) and through which exhaust gas flows and which comprises a heating component (20) and a carrier structure, wherein the heating component (20) is attached to the carrier structure, and a first and a second electrode (16, 18), which are attached to the heating device (12) and make electric contact with the heating device (12). The exhaust gas treatment device is characterized in that the first electrode (16) extends as far as into a central region (28) of the heating device (12), and the second electrode (18) extends as far as into an edge region (29) of the heating device (12), as seen in the exhaust gas flow direction (11) in the exhaust gas duct (13).

IPC Classes  ?

• F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
• F01N 13/08 - Other arrangements or adaptations of exhaust conduits

Abstract

The invention relates to a method for producing a segmented muffler (10) for the exhaust section of a motor vehicle, having the steps of: forming a first end segment (12) and a second end segment (16) of the muffler (10); connecting the first end segment (12) and the second end segment (16) by means of a connecting segment (20); and inserting a first exhaust pipe (46) into the first end segment (12) and a second exhaust pipe (48) into the second end segment (16). The invention additionally relates to a muffler (10) which has been produced according to such a method and to a vehicle comprising such a muffler.

IPC Classes  ?

• F01N 1/02 - Silencing apparatus characterised by method of silencing by using resonance

Abstract

The invention relates to a method for producing a segmented muffler (10) for the exhaust section of a motor vehicle, having the steps of: forming a first end segment (12) and a second end segment (16) of the muffler (10); and connecting the first end segment (12) and the second end segment (16) by means of a connecting segment (20). Additionally, a muffler (10) is provided which has been produced according to such a method.

IPC Classes  ?

• F01N 1/02 - Silencing apparatus characterised by method of silencing by using resonance

Abstract

An electrically heated catalyst has a catalyst body and a housing at least circumferentially surrounding the catalyst body. An electrical contacting assembly is arranged on a shell surface of the catalyst body, the electrical contacting assembly comprising a surface electrode arranged directly on the catalyst body and a contacting element connected to the surface electrode. The contacting element is rigid and has a screw thread.

IPC Classes  ?

• F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
• F01N 3/28 - Construction of catalytic reactors

Abstract

The invention relates to a thermal energy storage system (12), comprising an internal combustion engine (14), a heat reservoir (16), an exhaust gas heat recovery system (18) and a coolant circuit (22), wherein a coolant circulating in the coolant circuit (22) is heated by means of the exhaust gas recovery system (18) and the heat reservoir (16) can be charged optionally by means of heat from the coolant and/or by means of electrical energy via a mains connection (23), the heat reservoir (16) being a thermochemical heat reservoir, and/or the heat reservoir (16) comprising a phase-change material. The invention also relates to a motor vehicle having a thermal energy storage system.

IPC Classes  ?

• F01N 5/02 - Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy the devices using heat
• F01N 3/02 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
• F28D 20/00 - Heat storage plants or apparatus in generalRegenerative heat-exchange apparatus not covered by groups or
• F28D 20/02 - Heat storage plants or apparatus in generalRegenerative heat-exchange apparatus not covered by groups or using latent heat
• F01P 11/20 - Indicating devicesOther safety devices concerning atmospheric freezing conditions, e.g. automatically draining or heating during frosty weather
• F01P 3/20 - Cooling circuits not specific to a single part of engine or machine
• C09K 5/16 - Materials undergoing chemical reactions when used

Abstract

The invention relates to a component of an exhaust system for an internal combustion engine, which component has a wall in which at least one opening is provided. A perforated cover (16) closes the opening at least partially, the cover (16) being attached to the wall by means of a retainer (18), and a portion (23, 34) of the cover (16) engaging in an opening (28, 30) provided in the retainer (18). Furthermore, an exhaust system having a component of this type and a method for producing a component of this type are presented, the cover (16) being mounted on the retainer (18) by at least one portion (32, 34) of the cover (16) being inserted into an opening (28, 30) provided in the retainer (18).

IPC Classes  ?

• F01N 13/08 - Other arrangements or adaptations of exhaust conduits
• F01N 13/18 - Construction facilitating manufacture, assembly or disassembly

Abstract

The invention relates to a device (10) for producing a cylinder-surface-shaped or cone-surface-shaped, circumferentially closed tubular body (12), in particular an exhaust pipe, of an exhaust silencer housing casing and/or an exhaust cleaning device housing casing. The device (10) comprises a receiving space (14) for a cylinder-surface-shaped or cone-surface-shaped tubular body pre-form (18) having a circumferential gap (16). The device also comprises a closing mechanism for closing the circumferential gap (16) of the tubular body pre-form (18), which has at least two separate closing segments (24), wherein each of the closing segments (24) is assigned an individual drive unit (26) such that the closing segments (24) can be driven independently of one another.

IPC Classes  ?

• B23K 31/02 - Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by any single one of main groups relating to soldering or welding
• B21C 37/08 - Making tubes with welded or soldered seams
• B21D 49/00 - Sheathing or stiffening objects
• B21D 53/88 - Making other particular articles other parts for vehicles, e.g. cowlings, mudguards
• B23K 37/04 - Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass for holding or positioning work
• B23K 37/053 - Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass for holding or positioning work aligning cylindrical workClamping devices therefor
• F01N 3/28 - Construction of catalytic reactors
• B23K 101/06 - Tubes
• B23K 101/18 - Sheet panels

Abstract

The invention relates to a joining device (10) for integrally joining two joining sections (12a, 12b), said joining device comprising a receiving space (18) for receiving the joining sections (12a, 12b). The joining device (10) also has a positioning mechanism (22) comprising at least one positioning segment (24) on which at least one of the joining sections (12a, 12b) can be placed. A joining unit (26) is also provided, by means of which the joining sections (12a, 12b) can be integrally joined. The joining unit (26) is arranged on a side of one of the positioning segments (24), which faces away from the receiving region (18), and can act on a joining region (30) formed by the joining sections (12a, 12b) through an opening (28) provided in said positioning segment (24). The invention also relates to a method for integrally joining two joining sections (12a, 12b).

IPC Classes  ?

• B23K 37/04 - Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass for holding or positioning work
• B23K 37/053 - Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass for holding or positioning work aligning cylindrical workClamping devices therefor
• B23K 3/08 - Auxiliary devices therefor
• B23K 26/70 - Auxiliary operations or equipment

Abstract

The invention relates to an exhaust as system component (10), in particular a catalytic converter or a particle filter, for an exhaust gas system of an internal combustion engine of a motor vehicle. The exhaust gas system component (10) comprises at least two substrate blocks (14, 16) which are arranged one behind the other in an exhaust gas direction of flow (12) and are held in separate, essentially cylindrical substrate housings (22, 24). The substrate housings (22, 24) are interconnected in a gas-tight manner via a thermal joining process (26). The invention also relates to a method for the production of said exhaust gas system component (10).

IPC Classes  ?

• F01N 3/28 - Construction of catalytic reactors
• F01N 13/18 - Construction facilitating manufacture, assembly or disassembly
• F01N 13/00 - Exhaust or silencing apparatus characterised by constructional features

Abstract

An exhaust system component for an exhaust system of an internal combustion engine of a motor vehicle comprises a substrate which is held in a substantially cylindrical housing. The cylindrical housing has a housing jacket which comprises a metal sheet bent about a cylinder axis. The ends of the metal sheet oriented in the circumferential direction relative to the cylinder axis form a joint connected with a weld seam. The weld seam is spaced apart from an inner surface of the housing jacket and the ends each have a bevel at least in sections.

IPC Classes  ?

• F01N 3/022 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous
• B23K 26/262 - Seam welding of rectilinear seams of longitudinal seams of tubes
• B01D 46/00 - Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
• B01D 53/94 - Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
• F01N 3/28 - Construction of catalytic reactors
• F01N 13/18 - Construction facilitating manufacture, assembly or disassembly
• B23K 33/00 - Specially-profiled edge portions of workpieces for making soldering or welding connectionsFilling the seams formed thereby
• B23K 26/242 - Fillet welding, i.e. involving a weld of substantially triangular cross section joining two parts
• B21C 37/08 - Making tubes with welded or soldered seams
• B23K 26/32 - Bonding taking account of the properties of the material involved
• B23K 101/06 - Tubes
• B23K 103/04 - Steel alloys
• B23K 101/12 - Vessels
• B23K 101/00 - Articles made by soldering, welding or cutting

Abstract

The invention relates to a noise generating device (20) for a vehicle exhaust system in a motor vehicle having a housing (22) and a noise generator arranged inside the housing (22). The housing (22) has an upper part (26), a lower part (28) and a plug connection (46) for at least one control cable for the noise generator, wherein the plug connection (46) is disposed between the upper part (26) and the lower part (28). The invention further describes a vehicle exhaust system and a method for producing a noise generating device.

IPC Classes  ?

• G10K 11/178 - Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effectsMasking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
• F01N 1/06 - Silencing apparatus characterised by method of silencing by using interference effect

Abstract

The invention relates to a method for operating a workstation in which at least one machining robot (14) and a rotatable frame (12) are provided, wherein mountings (24) for at least one workpiece (22) are provided on different sides (16A, 16B). The frame can be rotated between the workstations. The workpiece (22) is secured to the frame by means of a mounting (24) on one side (16A) of the frame (12) in the loading station (18A) and is machined by means of a machining robot (14) while still in the loading station (18A) before the frame is rotated and the workpiece is removed from the mounting (24) in the unloading station (18B).

IPC Classes  ?

• B25J 9/00 - Programme-controlled manipulators

Abstract

An assembly has a clamp (12) and a mounting aid for fixing the clamp (12) to a pipe (18), wherein the clamp (12) has a fixing ring (20) which surrounds the pipe (18). The mounting aid (14) has at least two clamping arms (16) which are directed radially inwards with respect to the fixing ring (20) and which project radially inwards in relation to the fixing ring (20), said clamping arms being fastened to the fixing ring (20). Each clamping arm (16) has a clamping portion (28) which is arranged next to the fixing ring (20) in an axial direction (A).

IPC Classes  ?

• F16L 23/08 - Flanged joints the flanges being connected by members tensioned in the radial plane connection by tangentially arranged pin and nut
• F01N 13/18 - Construction facilitating manufacture, assembly or disassembly

Abstract

The invention relates to an exhaust gas system (12) for an internal combustion engine of a motor vehicle. Said exhaust gas system comprises a singular exhaust gas inlet line (16), two exhaust gas outlet lines (18) connected in an exhaust gas conducting manner to the exhaust gas inlet line (16), and an active sound damping device which is connected in a sound-conducting manner to both exhaust gas outlet lines (18). The invention also relates to a motor vehicle having an exhaust gas system (12) of this type.

IPC Classes  ?

• F01N 13/00 - Exhaust or silencing apparatus characterised by constructional features
• F01N 13/02 - Exhaust or silencing apparatus characterised by constructional features having two or more separate silencers in series
• F01N 1/02 - Silencing apparatus characterised by method of silencing by using resonance
• F01N 1/06 - Silencing apparatus characterised by method of silencing by using interference effect

Abstract

A joining device for producing an exhaust gas system for an internal combustion engine comprises a device base, a frame, and at least two joining units that can be operated simultaneously are fastened to the frame. The frame extends essentially vertically starting from the device base. In a method for producing the exhaust gas system, at least one joining unit of a joining device is oriented to a geometry of the exhaust gas system that is to be produced, at least three components or assemblies of the exhaust gas system are positioned in the joining device, and the components or assemblies are simultaneously connected.

IPC Classes  ?

• B23K 1/002 - Soldering by means of induction heating
• B23K 1/14 - Soldering, e.g. brazing, or unsoldering specially adapted for soldering seams
• B23K 37/02 - Carriages for supporting the welding or cutting element
• B23K 37/04 - Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass for holding or positioning work
• B23K 37/053 - Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass for holding or positioning work aligning cylindrical workClamping devices therefor
• B23K 1/19 - Soldering, e.g. brazing, or unsoldering taking account of the properties of the materials to be soldered
• B23K 3/047 - Heating appliances electric
• F01N 13/18 - Construction facilitating manufacture, assembly or disassembly
• B23K 3/08 - Auxiliary devices therefor
• B23K 1/00 - Soldering, e.g. brazing, or unsoldering
• B23K 101/06 - Tubes
• B23K 101/00 - Articles made by soldering, welding or cutting

Abstract

A method of manufacturing a cylindrical housing of an exhaust-gas treatment unit for vehicles includes providing a flat sheet metal part having at least one embossing, and round bending the sheet-metal part in a round bending tool by displacing the sheet metal part between rolls such that the sheet metal part obtains a cylindrical shape having a longitudinal direction parallel to roll axes of the rolls. At least one elastic roll is used such that the embossing of the sheet metal part is maintained during round bending. The longitudinal edges of the cylindrical sheet metal part are then connected to form a tube. A method of manufacturing an exhaust-gas treatment unit is furthermore shown.

IPC Classes  ?

• F01N 13/18 - Construction facilitating manufacture, assembly or disassembly
• B21D 51/10 - Making hollow objects characterised by the structure of the objects conically or cylindrically shaped objects
• B21D 5/14 - Bending sheet metal along straight lines, e.g. to form simple curves by passing between rollers
• B21D 53/00 - Making other particular articles

Abstract

A valve actuating device, in particular for an exhaust system, comprises a disk assembly, an actuating arm, and a valve actuator wherein the disk assembly is arranged between the actuating arm and the valve actuator. The disk assembly, at least in part, thermally decouples the actuating arm from the valve actuator and includes at least two identically constructed disks with axial protrusions, which in an axial direction are directly arranged one behind the other and contact each other at the protrusions.

IPC Classes  ?

• F16K 31/04 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a motor
• F16K 1/22 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
• F02M 26/70 - Flap valvesRotary valvesSliding valvesResilient valves
• F02M 26/54 - Rotary actuators, e.g. step motors
• F02D 9/04 - Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning exhaust conduits

Abstract

The invention relates to an assembly comprising at least two components of an exhaust system of an internal combustion engine, wherein the at least two components consist of a metal or a metal composite material, made from a group comprising corrosion- and heat-resistant steels, steels which have a corrosion protection layer, titanium, titanium alloys and aluminium alloys, and joined together by a cold-welded joint (60, 62). The cold-welded joint (60, 62) comprises at least one additional element. The invention also relates to a method for joining at least two components of an exhaust system by means of a cold-welded joint (60, 62), wherein the components consist of a metal or a metal composite material, which is made from the group comprising corrosion- and heat-resistant steels, steels which have a corrosion protection layer, titanium, titanium alloys and aluminium alloys. An intermediate element (30) is arranged between the at least two components and the at least two components are each joined to the intermediate element by means of a cold-welded joint (60, 62).

IPC Classes  ?

• F01N 13/18 - Construction facilitating manufacture, assembly or disassembly
• B23K 20/06 - Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating by means of high energy impulses, e.g. magnetic energy

Abstract

A method of generating a drive signal for a loudspeaker in an exhaust system of an engine of a vehicle or inside or outside a passenger cell includes providing a predetermined source signal for a desired additional sound in a time domain comprising a plurality of signal components of different frequencies; analyzing the source signal based on a phase of the source signal and/or a phase of at least one oscillation in the source signal; identifying a phase of engine noise and/or a phase of at least one oscillation existing in engine noise; shifting the phases of the source signal and/or the oscillation existing in the source signal based on phases identified in engine noise and/or in oscillation existing in engine noise, the relationship of phases of individual oscillations of the source signal among each other being preserved; and generating the drive signal based on the phase-shifted source signal.

IPC Classes  ?

• G10K 11/178 - Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effectsMasking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
• F01N 1/06 - Silencing apparatus characterised by method of silencing by using interference effect

Abstract

A component of an exhaust system for a combustion engine has a wall in which at least one opening is provided, and a perforated cover which is associated with the opening. A support is provided by which the perforated cover is mounted to the wall of the component. Further, a clearance is provided between the support and the cover such that the cover can shift parallel to the wall of the component.

IPC Classes  ?

• F01N 13/18 - Construction facilitating manufacture, assembly or disassembly
• F01N 13/08 - Other arrangements or adaptations of exhaust conduits
• F01N 13/16 - Selection of particular materials

Abstract

A thermoelectric generator unit, in particular for an exhaust system of an internal combustion engine, has an outer housing (102) in which there is arranged at least one first inner duct (106) through which a hot fluid (H) flows, and has at least one thermoelectric module (112) which, on a hot side (SH), is in thermal contact with the first inner duct (106). Within the outer housing (102) there is arranged at least one elastic compensation element (116) which generates a clamping force which acts on the thermoelectric module (112). The elastic compensation element (116) is at least 60% composed of organic material.

IPC Classes  ?

• F01N 5/02 - Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy the devices using heat
• H01L 35/00 - SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR - Details thereof

Abstract

An assembly (10) for introducing a reducing agent into the exhaust pipe (12) of an exhaust system of an internal combustion engine, in particular of a motor vehicle, has a feed connector (14) which opens into the exhaust pipe (12) and includes a wall (16), a feed device (20) for reducing agents which opens into the feed connector (14), and a device (22) for generating a gas flow (G) which is additional to the reducing agent flow (R) and lines the wall (16) of the feed 10 connector (14). Furthermore, there is described a method of introducing a reducing agent into the exhaust pipe (12) of an exhaust system of an internal combustion engine, in particular of a motor vehicle.

IPC Classes  ?

• F01N 3/00 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
• F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
• F01N 13/08 - Other arrangements or adaptations of exhaust conduits
• F01N 3/28 - Construction of catalytic reactors

Abstract

An assembly (10) for introducing a reducing agent into the exhaust pipe (12) of an exhaust system of an internal combustion engine, in particular of a motor vehicle, has a feed connector (14) which opens into the exhaust pipe (12) and includes a wall (16), a feed device (20) for reducing agents which opens into the feed connector (14), and a device (22) for generating a gas flow (G) which is additional to the reducing agent flow (R) and lines the wall (16) of the feed 10 connector (14). Furthermore, there is described a method of introducing a reducing agent into the exhaust pipe (12) of an exhaust system of an internal combustion engine, in particular of a motor vehicle.

IPC Classes  ?

• F01N 3/00 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
• F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
• F01N 13/08 - Other arrangements or adaptations of exhaust conduits
• F01N 3/28 - Construction of catalytic reactors

Abstract

Disclosed is a method for producing a cylindrical housing of an exhaust treatment unit for vehicles comprising the following steps: a) providing a flat sheet metal part (16) which has at least one embossment (18); b) rounding the sheet metal part (16) in a rounding tool (22) by means of moving the sheet metal part (16) between rollers (24, 26) such that it obtains a cylindrical form having a longitudinal direction that is parallel to the roller axes, wherein at least one elastic roller is used such that the embossment (18) of the sheet metal part (16) is preserved during the rounding process and; c) connecting the longitudinal edges of the cylindrically-shaped sheet metal part (16) to form a pipe. A method for producing an exhaust treatment unit is also disclosed.

IPC Classes  ?

• F01N 13/18 - Construction facilitating manufacture, assembly or disassembly
• B21D 31/00 - Other methods for working sheet metal, metal tubes, metal profiles

Abstract

An assembly (10) for introducing a reducing agent into the exhaust pipe (12) of an exhaust system of an internal combustion engine, in particular of a motor vehicle, has a feed connector (14) which opens into the exhaust pipe (12) and includes a wall (16), a feed device (20) for reducing agents which opens into the feed connector (14), and a device (22) for generating a gas flow (G) which is additional to the reducing agent flow (R) and lines the wall (16) of the feed 10 connector (14). Furthermore, there is described a method of introducing a reducing agent into the exhaust pipe (12) of an exhaust system of an internal combustion engine, in particular of a motor vehicle.

IPC Classes  ?

• F01N 3/00 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
• F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
• F01N 13/08 - Other arrangements or adaptations of exhaust conduits
• F01N 3/28 - Construction of catalytic reactors

Abstract

In a method of influencing the exhaust noise of a motor vehicle, a control unit generates noise package signals, the control unit transmits the noise package signals individually or so as to superimpose a basic signal to a loudspeaker associated with an exhaust branch of the motor vehicle, and the loudspeaker converts the individual noise package signals or the basic signal superimposed with the noise package signals into sound waves, with individual noise package signals being emitted by the loudspeaker as time-limited sound wave packages, so-called noise packages. Furthermore, an exhaust system is shown.

IPC Classes  ?

• G10H 5/10 - Instruments in which the tones are generated by means of electronic generators using generation of non-sinusoidal basic tones, e.g. sawtooth
• H04R 1/02 - CasingsCabinetsMountings therein
• F01N 1/06 - Silencing apparatus characterised by method of silencing by using interference effect
• G10K 11/00 - Methods or devices for transmitting, conducting or directing sound in generalMethods or devices for protecting against, or for damping, noise or other acoustic waves in general
• G10K 11/22 - Methods or devices for transmitting, conducting or directing sound for conducting sound through hollow pipes, e.g. speaking tubes

Abstract

In a method of influencing the exhaust noise of a motor vehicle, a control unit generates noise package signals (C), the control unit transmits the noise package signals (C) individually or so as to superimpose a basic signal (B) to a loudspeaker associated with an exhaust branch of the motor vehicle, and the loudspeaker converts the individual noise package signals (C) or the basic signal (B) superimposed with the noise package signals (C) into sound waves, with individual noise package signals (C) being emitted by the loudspeaker as time-limited sound wave packages, so-called noise packages.

IPC Classes  ?

• F01N 1/06 - Silencing apparatus characterised by method of silencing by using interference effect
• G10K 11/175 - Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effectsMasking sound

Abstract

A valve assembly has a housing with a first inlet, a second inlet, a first outlet, and a second outlet. A first flow path is between the first inlet and the first outlet, a second flow path is between the second inlet and the first outlet, and a third flow path is between the first inlet and the second outlet. A closure element is movably supported in the housing and in a by-pass position opens the first flow path and closes at least the second flow path, and in a normal position closes the first flow path and opens the second flow path and the third flow path. A flow guiding element is on the closure element, and which in the normal position protrudes into the second flow path and is coupled to the closure element to urge, in a gas flow from the second inlet to the first outlet, the closure element into the normal position. An exhaust gas system includes the valve assembly and an exhaust gas heat exchanger.

IPC Classes  ?

• F16K 11/074 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid with all movable sealing faces moving as one unit comprising only sliding valves with pivoted closure members with flat sealing faces
• F02D 9/10 - Throttle valves specially adapted thereforArrangements of such valves in conduits having pivotally-mounted flaps
• F16K 11/052 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid with all movable sealing faces moving as one unit comprising only lift valves with pivoted closure members, e.g. butterfly valves
• F01N 5/02 - Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy the devices using heat
• F02M 26/26 - Layout, e.g. schematics with coolers having bypasses characterised by details of the bypass valve
• F02M 26/32 - Liquid-cooled heat exchangers

Abstract

A method of manufacturing an exhaust gas carrying device, in particular an exhaust gas purification device, and a tool provided therefor include segment-like jaws that are used to deforma an outer housing. The jaws have indentations or projections adjacent to each other, and which are complementary to form a continuously surrounding indentation/projection. The reshaped outer housing is provided with one or more surrounding projections or indentations by the deformation.

IPC Classes  ?

• F01N 3/28 - Construction of catalytic reactors
• B21D 17/02 - Forming single grooves in sheet metal or tubular or hollow articles by pressing
• B21D 39/04 - Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by platingTube expanders of tubes with tubesApplication of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by platingTube expanders of tubes with rods
• B23P 11/00 - Connecting or disconnecting metal parts or objects by metal-working techniques, not otherwise provided for
• F01N 13/14 - Exhaust or silencing apparatus characterised by constructional features having thermal insulation
• F01N 13/18 - Construction facilitating manufacture, assembly or disassembly
• B23P 17/00 - Metal-working operations, not covered by a single other subclass or another group in this subclass

Abstract

An exhaust system is manufactured in the following manner. Initially, a plurality of pipe sections are put into each other with a clearance fit, so that connecting points are formed, at which two pipe sections overlap each other. The pipe sections then are calibrated at the connecting points, so that a narrow gap is obtained. Subsequently, the connecting points are soldered. The exhaust system thus includes a plurality of pipe sections which are put into each other and soldered to each other. Outer pipe sections of the plurality of pipe sections are calibrated.

IPC Classes  ?

• F16L 13/08 - Soldered joints
• F01N 13/18 - Construction facilitating manufacture, assembly or disassembly
• F16L 21/08 - Joints with sleeve or socket with additional locking means

Abstract

A brazing method connects an assembly made up of a pipe, a component provided with an opening, and a compensation element. The compensation element includes a support section and an insertion section that is arranged between an end of the pipe and the opening of the component. An inside diameter of the compensation element is smaller than a diameter of the opening in the component. The insertion section is inserted into the end of the pipe, and the support section is located between the pipe and the component and rests on the component at the edge of the opening. The compensation element, the pipe, and the component are heated, preferably inductively, in a region of the compensation element to a temperature above the melting temperature of brazing material that is present in the region of the brazing points.

IPC Classes  ?

• F16L 41/02 - Branch units, e.g. made in one piece, welded, riveted
• B23K 1/002 - Soldering by means of induction heating
• B23K 3/047 - Heating appliances electric
• B23K 1/18 - Soldering, e.g. brazing, or unsoldering specially adapted for soldering seams circumferential seams, e.g. of shells
• F16L 41/08 - Joining pipes to walls or pipes, the joined pipe axis being perpendicular to the plane of a wall or to the axis of another pipe

Abstract

A device for exhaust gas heat utilization in internal combustion engines of motor vehicles has an outer housing through which exhaust gas can flow and at least one thermoelectric generator module received in the outer housing. The at least one thermoelectric generator module is fastened onto a wavelike carrier wall. The invention further relates to an exhaust gas module having such a device, and to a method of manufacturing this device.

IPC Classes  ?

• H01L 35/30 - SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR - Details thereof operating with Peltier or Seebeck effect only characterised by the heat-exchanging means at the junction
• F01N 5/02 - Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy the devices using heat
• H01L 35/34 - Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof

Abstract

The invention relates to a method for producing an exhaust gas system (10) by means of the following steps: First of all a plurality of pipe sections (14, 16, 18) are inserted into one another with a clearance fit, so that connection points (30) are formed at which two pipe sections (14, 16, 18) respectively overlap. Then the pipe sections (14, 16, 18) are calibrated at the connection points (30) so that a narrow gap is produced. Next the connection points (30) are soldered. The invention also relates to an exhaust gas system having a plurality of pipe sections (14, 16, 18) which are inserted into one another and are soldered together, wherein the respective outer pipe sections (14, 16, 18) are calibrated.

IPC Classes  ?

• F01N 13/18 - Construction facilitating manufacture, assembly or disassembly

Abstract

The invention relates to an exhaust conducting device of a vehicle having a cylindrical outer housing (18), which consists of an outer shell (24) and an inner shell (26) arranged in the interior of said outer shell, wherein the outer shell (24) forms a larger section of the outer circumference than the inner shell (26) or an equally large outer circumferential section. The radial outer face of the inner shell (26) is in particular firmly bonded to the outer shell (24). The outer shell (24) is C-shaped in the cross-section or has a closed ring shape. The invention further relates to a method for producing the device.

IPC Classes  ?

• F01N 3/28 - Construction of catalytic reactors

Abstract

The invention relates to a thermoelectric generator unit, in particular for coupling to an exhaust pipe of an internal combustion engine, having at least one inside pipe (16) through which gas flows, the outside circumference thereof having at least one flat section (24). The inside pipe (16)is completely enclosed by an oval outside housing (12) in the circumferential direction. A plurality of thermoelectric modules (14) are arranged on the flat sections (24) of the inside pipe (16). According to the invention, there is at least one cooling element (18), which has a flat side on which the thermoelectric modules (14) are positioned. The assembly comprising the inside pipe (16), the thermoelectric modules (14) and the cooling element (18) is enclosed by an elastic compensating element (20), which contacts the inside of the outside housing (12) and is held in the outside housing (12) by clamping.

IPC Classes  ?

• F01N 5/02 - Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy the devices using heat
• F01N 3/04 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of liquids

Abstract

In a device for the utilization of exhaust-gas heat in internal combustion engines of motor vehicles, at least one TEG module (22) is provided which has a hot side and a cold side, wherein the hot side and/or the cold side are/is in direct flow contact with a hot and/or a cold medium respectively. Furthermore, the device has a housing through which exhaust gas flows and which has an inlet for an inlet pipe and an outlet for an outlet pipe, wherein the TEG module or a heat exchanger is accommodated in the housing, and the device has a control element for manipulating the exhaust-gas flow within the housing. The inlet and the outlet are connected both by means of a first flow duct, which adjoins the at least one thermoelectric generator module or the heat exchanger and is coupled in heat-conducting fashion thereto, and by means of a second flow duct which is spaced apart from the at least one thermoelectric generator module or heat exchanger, wherein the two flow ducts are formed in the interior of the housing.

IPC Classes  ?

• F01N 5/02 - Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy the devices using heat
• H01L 35/30 - SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR - Details thereof operating with Peltier or Seebeck effect only characterised by the heat-exchanging means at the junction

Abstract

A method of manufacturing an exhaust gas carrying device, in particular an exhaust gas purification device, and a tool provided therefor include segment-like jaws that are used to deform an outer housing. The jaws have indentations or projections adjacent to each other, and which are complementary to form a continuously surrounding indentation/projection. The reshaped outer housing is provided with one or more surrounding projections or indentations by the deformation.

IPC Classes  ?

• B21D 51/16 - Making hollow objects characterised by the use of the objects
• B23P 11/00 - Connecting or disconnecting metal parts or objects by metal-working techniques, not otherwise provided for
• F01N 3/28 - Construction of catalytic reactors
• F01N 13/18 - Construction facilitating manufacture, assembly or disassembly
• F01N 13/14 - Exhaust or silencing apparatus characterised by constructional features having thermal insulation
• B21D 39/04 - Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by platingTube expanders of tubes with tubesApplication of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by platingTube expanders of tubes with rods
• B21D 17/02 - Forming single grooves in sheet metal or tubular or hollow articles by pressing

Abstract

This invention relates to a method for manufacturing exhaust gas ducting devices (8), in particular exhaust gas cleaning devices, which each have an outer housing (14) with an insert clamped therein, wherein the insert comprises a substrate (10) traversed by exhaust gas and an elastic compensating element (12) surrounding the substrate (10), and wherein the method comprises the following steps: a) each individual compensating element (12) is spread on a base (26) and deformed substantially vertical to the base (26) by exerting a pressure (p), wherein the entire compensating element (12) is subjected to a full- surface load, b) from the values (p, x) determined, a setpoint deformation (xs, xs*) of the compensating element (12) is determined, which is necessary to achieve a specified setpoint pressure (ps, ps*), c) at least one parameter of the substrate (10) is determined individually, d) the compensating element (12) is placed around the substrate (10), and e) the insert thus obtained is mounted in an outer housing (14), whose inside dimensions correspond to the outside dimensions of the insert with the determined setpoint deformation (xs, xs*).

IPC Classes  ?

• F01N 3/28 - Construction of catalytic reactors
• F01N 13/18 - Construction facilitating manufacture, assembly or disassembly

Abstract

The invention relates to an assembly, particularly in an exhaust gas system for an internal combustion engine, comprising at least one metal foam element (24) comprising at least one connecting edge (26) by means of which the metal foam element (24) is connected to another component of the assembly. The connecting edge (26) comprises a density greater than that of a center segment (28) of the metal foam element (24).

IPC Classes  ?

• B01D 39/20 - Other self-supporting filtering material of inorganic material, e.g. asbestos paper or metallic filtering material of non-woven wires

Abstract

The invention relates to a thermoelectric module (10) comprising a plurality of thermoelectric elements connected in series that are arranged between a first module housing plate defining a high temperature side and a second module housing plate defining a low temperature side, wherein at least one elastic compensating element is provided laterally next to the thermoelectric elements and toward the end faces of the module housing plates, said compensating element exerting a lateral holding force on the thermoelectric elements and extending from one to the other inner face of the opposite module housing plate. Such a thermoelectric module (10) is contained in a thermoelectric generator unit (100), comprising a generator housing (102), in which at least one elastic compensating element (20) and at least one thermoelectric module (10) are accommodated, wherein the generator housing (102) exerts a pretension on the thermoelectric module (10) via the elastic compensating element (20).

IPC Classes  ?

• H01L 35/32 - SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR - Details thereof operating with Peltier or Seebeck effect only characterised by the structure or configuration of the cell or thermocouple forming the device
• H01L 35/30 - SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR - Details thereof operating with Peltier or Seebeck effect only characterised by the heat-exchanging means at the junction
• F01N 3/28 - Construction of catalytic reactors

Abstract

A method of regenerating an exhaust gas purification filter, in particular for internal combustion engines, uses a vaporized liquid that is to be introduced into the exhaust gas flow. A surface temperature of a heating element in a vaporizer chamber is limited to a maximum of 700 to 750° C.

IPC Classes  ?

• F01N 9/00 - Electrical control of exhaust gas treating apparatus
• B01D 53/94 - Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
• B01D 53/96 - Regeneration, reactivation or recycling of reactants
• F01N 3/025 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using fuel burner or by adding fuel to exhaust
• F01N 3/36 - Arrangements for supply of additional fuel

Abstract

An exhaust gas system includes a first exhaust component and a second exhaust component that are spaced apart from each other by a solder gap that can be has great as 1.20 mm. A high temperature solder material is provided near the solder gap and is heated by an inductor to form an induction solder joint between the first and second exhaust components.

IPC Classes  ?

• F16L 13/08 - Soldered joints
• B23K 1/002 - Soldering by means of induction heating
• B23K 101/06 - Tubes

Abstract

The invention relates to an exhaust gas silencer (10) of a combustion engine, comprising a tube section (14, 16) on the inflow side and the outflow side as well as a silencer housing (18) that is connected to the tube sections (14, 16). The silencer housing (18) that comprises an outer casing (20) and front walls (22) is made at least in sections of plastic.

IPC Classes  ?

• F01N 1/04 - Silencing apparatus characterised by method of silencing by using resonance having sound-absorbing materials in resonance chambers
• F01N 13/16 - Selection of particular materials
• F01N 1/02 - Silencing apparatus characterised by method of silencing by using resonance

Abstract

An exhaust gas treatment device has a housing and a hollow body through which exhaust gas flows and which is accommodated in the housing. The hollow body consists at least partly of a gas permeable substrate. The hollow body is connected at least one end to a wall member arranged in the housing and formed to be flexible in the axial direction.

IPC Classes  ?

• F01N 3/00 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
• F01N 3/28 - Construction of catalytic reactors

Abstract

The invention relates to a method for producing an exhaust gas conducting device, particularly an exhaust gas cleaning device, and a tool provided therefor, wherein the segment-like jaws utilized for deforming the outer housing (10) have indentations (22) or projections adjoining each other, which are complementary to a peripheral indentation/projection. The reshaped outer housing (10) is provided with one or more peripheral projections (18) or indentations by the deformation.

IPC Classes  ?

• F01N 3/28 - Construction of catalytic reactors
• F01N 13/18 - Construction facilitating manufacture, assembly or disassembly
• F01N 13/14 - Exhaust or silencing apparatus characterised by constructional features having thermal insulation

Abstract

The invention relates to a method for regenerating an exhaust gas cleaning filter, particularly for internal combustion engines, by means of an evaporated fluid inserted in the exhaust gas flow, wherein the surface temperature of the heating element is limited to a maximum of 700 to 750°.

IPC Classes  ?

• F01N 3/025 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using fuel burner or by adding fuel to exhaust
• F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
• F01N 3/36 - Arrangements for supply of additional fuel
• F01N 9/00 - Electrical control of exhaust gas treating apparatus
• B01D 53/90 - Injecting reactants