Abstract: A method for filling a silencer with a sound absorbing material in which an inside of a shell is partitioned into a plurality of silencing chambers by a separator and at least one silencing chamber is filled with the material, the method including: forming a hole at the silencing chamber to be filled with the material in the shell; inserting a filling nozzle into the silencing chamber from the hole; injecting the material from the filling nozzle into the silencing chamber S2 for filling; and externally sealing the hole opening to the shell with a hole sealing member. An outer peripheral flange portion is abutted on and welded to an outer surface of the shell to seal the hole with the hole sealing member 8 allowing stably holding the silencer and easily filling the silencer with the material irrespective of a shell shape and a structure inside the shell.

Abstract: A noise suppressor is removably installed in power generator equipment including an enclosure and a power generator unit. The enclosure includes at least one of an air intake port and an air discharge port that are vents. The power generator unit is covered with the enclosure. The noise suppressor includes a tubular member having a first opening that opens to a direction different from the vent and a second opening that opens to the vent, forming a channel for gas leading from the first opening to the second opening, and provided with an acoustic liner inside the channel. The tubular member has such a shape that the channel bends at a plurality of points.

Abstract: An insert assembly unit for a muffler of an exhaust system of an internal combustion engine includes two walls (12, 14) arranged at spaced locations from one another. Each of the two walls has a circumferential edge area (20, 22) configured for fixing at a circumferential wall of a muffler. An exhaust gas flow unit (26) is arranged between the two walls. The exhaust gas flow unit includes a flow duct area (34) with an exhaust gas outer flow opening (38) to be positioned directed towards an opening in a circumferential wall of a muffler, a first mounting duct area (40) with a first mounting opening (44) for fixing the exhaust gas flow unit at a first wall of the walls, and a second mounting duct area (42) with a second mounting opening (46) for fixing the exhaust gas flow unit at a second wall of the walls.

Abstract: Disclosed is an exhaust sound generating apparatus of a vehicle including a housing which has a connection flow passage connected to the exhaust pipe of a vehicle and is open on one surface, a cover member covering the open portion of the housing, and a membrane accommodated in an inside of the housing to partition the inside of the housing into a first space on the connection flow passage side and a second space on the cover member side and vibrated by the pulsation of exhaust gas.

Abstract: An assembly for an exhaust system comprises a housing having a jacket, an insert arranged in the interior of the housing and having at least one exhaust pipe, wherein the jacket has an opening, in particular a radial opening, through which the exhaust pipe is connectable to the exhaust system, wherein an adapter part is provided that is connected to the exhaust pipe, and wherein the adapter part has a contact section that contacts the inner side of the jacket around the opening.

Abstract: Provided acoustic devices include an external housing defining an expansion chamber and a wall extending through and partitioning the expansion chamber into a central chamber and a peripheral chamber adjacent the central chamber, wherein an inlet and outlet communicate with the central chamber, and wherein the wall includes a plurality of apertures formed therethrough to allow air movement to and from the central and expansion chambers, the plurality of apertures sized to provide an average flow resistance ranging from 100 MKS Rayls to 5000 MKS Rayls. The acoustic devices advantageously show significant sound attenuation while streamlining air flow to reduce pressure drop across the expansion chamber.

Abstract: A vehicle tailgate includes a laterally extending internal panel, laterally extending external panel, laterally extending support beam, and patches of anti-flutter adhesive. The laterally extending internal and external panels are spaced apart relative to each other. The laterally extending support beam is disposed between the internal and external panels, is secured to the internal panel, and has a plurality of spaced apart embossments that extend toward the external panel. The patches of anti-flutter adhesive are disposed between adjacent embossments and are secured to each of the support beam and external panel.

Abstract: A device to trap and remove particulate matter from exhaust of internal combustion engines, without increasing resistance to the flow of engine exhaust is disclosed herein. The system is provided with a single or a plurality of ducts (1 & 2) through which exhaust gases enter tangentially into a hollow chamber (3), causing the gases to spin at high speeds. The spinning gases generate centrifugal force resulting in separation of particulate matter from the exhaust gases. The hollow chamber (3) contains ports (4) and radial projections (5) on its axial surface to allow the separated particulate matter to enter into a trap (6). The particulate matter entering the trap (6) gets stuck to a fine mesh of high temperature resistant porous material that may or may not be electrically charged. The trap (6) is enclosed in a cover (7) that encases the fine mesh which surrounds the ports (4) and radial projections (5).

Abstract: A muffler for an exhaust system of an internal combustion engine comprises: a casing having an inner space, an inlet pipe for sound to enter the muffler, an outlet pipe for sound to exit the muffler, and a separation wall arranged to extend from the inlet pipe to the outlet pipe and being embodied in a manner such as to define first and second acoustical ducts extending through the casing to allow sound propagating along the first acoustical duct to enter the inner space of the casing and to thereafter exit the inner space of the casing again, and to allow sound propagating along the second acoustical duct to acoustically bypass the inner space of the casing.

Abstract: A manufacturing method of a sub-muffler includes a rectangular tubular body shaping step, a preliminary shaping step, and a diameter reduction shaping step. In the rectangular tubular body shaping step, a plate material is bent and a rectangular tubular body having a rectangular shape in cross section is thereby formed. In the preliminary shaping step, ends of the rectangular tubular body are preliminarily formed and the end parts of the tubular body are thereby formed so that its cross-sectional shape becomes a circular shape. In the diameter reduction shaping step, the diameters of the ends of the rectangular tubular body are reduced.

Abstract: A silencer (1; 1?) for an exhaust system of an internal combustion engine, in particular of a motor vehicle, includes a housing (2; 2?), which includes a housing shell (3; 3?) extending in a circumferential direction (U) of the housing (2; 2?). At least one sandwich plate (6; 6?) forms a part of the housing shell (3; 3?). A housing interior space (4) including at least one chamber (8), is enclosed by the housing (2). A self-supporting support structure (5) is provided, which includes a pipe arrangement (7) that is at least partially arranged in the housing interior space (4).

Abstract: A saddle-ride type vehicle that allows easy axle adjustment even if the exhaust system has such a structure wherein a muffler is close to an axle of a rear wheel. The exhaust system includes a tubular muffler connected to an exhaust pipe for discharging the exhaust of an engine. In the exhaust system, the muffler is disposed laterally to a rear wheel rotatably supported by swingarms via an axle. An end cap covering a muffler rear end portion of the muffler is detachably and attachably provided on the muffler rear end portion with the end cap being disposed on a vehicle outer side of the axle at such a position that the axle is invisible in a side view of the vehicle.

Abstract: An exhaust muffler for a vehicle includes: a sleeve portion made up of an outer sleeve and an inner sleeve; an upstream side cover that has an exhaust entrance and that closes an upstream side opening of the sleeve portion; and a downstream side cover that has an exhaust exit and that closes a downstream side opening of the sleeve portion. At least one of the upstream side cover and the downstream side cover has a peripheral flange portion that externally holds the sleeve portion. The peripheral flange portion has an outer sleeve holding portion and an inner sleeve holding portion. One end portion of the inner sleeve abuts on the inner sleeve holding portion so as to be slidable in a length direction of the inner sleeve. One end portion of the outer sleeve is fixed to the outer sleeve holding portion.

Abstract: A muffler includes a shell, baffles, and a plurality of pipes. The shell defines first and second end cavities and a central cavity. The end cavities have larger cross-sectional areas that a cross-sectional area of the central cavity. The baffles cooperate to form multiple chambers within the shell. A first inlet directs a first portion of the exhaust into a first chamber. A second inlet directs a second portion of the exhaust into a second chamber. A first pipe extends through first, third and fourth baffles and includes an inlet in the fourth chamber. The first pipe directs exhaust from the fourth chamber to a first outlet at the first end cavity. A second pipe extends through the second, third and fourth baffles and includes an inlet in the third chamber. The second pipe directs exhaust from the third chamber to a second outlet at the second end cavity.

Abstract: A muffler unit (1), especially for a motor vehicle, has a two-part housing (4) with first and second housing parts (2, 3) each of a shell-like design. An outlet opening and an inlet opening (5, 6) are provided in the housing (4). An outlet bottom (12) and an inlet bottom (13) are inserted into outlet opening (5) and into the inlet opening (6), respectively. The outlet bottom (12) and inlet bottom (13) are designed each as a cover that can be inserted into outlet opening (5) and inlet opening (6).

Abstract: A muffler for a vehicle is provided, including: a muffler housing having a first housing body and a second housing body that are divided in two parts and form an internal space with an inlet opening and an outlet opening when combined; and an internal structure inserted and forced into the internal space of the muffler housing to be detachable from the muffler housing, and allowing an exhaust gas discharged from an engine to flow into the internal space and to be discharged out of the muffler housing through a predetermined path.

Abstract: An exhaust muffler includes a pair of base members disposed substantially parallel to one another and defining an exhaust entry and exhaust exit. At least one wall member is coupled to the base members. The at least one wall member is intermediate the base members and intermediate the entry and exit. The at least one wall member includes a linear portion coupled to a semicircular portion.

Abstract: Embodiments in accordance with the present disclosure may provide a conformal transverse muffler including an enclosure shaped to fit around a bottom and a side of a feature of a vehicle. The enclosure may include a mid section fittable below the feature, and two side sections fittable in opposite locations only radially outside of a circumference of the spare tire well. The side sections may be thicker than the mid section and may have a vertical center above a vertical center of the mid section.

Abstract: Embodiments in accordance with the present disclosure may provide a conformal transverse muffler including an enclosure shaped to fit around a bottom and a side of a feature of a vehicle. The enclosure may include a mid section fittable below the feature, and two side sections fittable in opposite locations only radially outside of a circumference of the spare tire well. The side sections may be thicker than the mid section and may have a vertical center above a vertical center of the mid section.

Abstract: A muffler (1) for an exhaust system of an internal combustion engine, especially of a motor vehicle, has a housing (2), which encloses a muffler volume (7) and has at least one flat wall area (6), with at least one inlet tube (3) and with at least one outlet tube (4) and with at least one bracket (5) for fastening the muffler (1) to a holding structure. A lightweight construction is simplified if at least one wall section (11) of such a flat wall area (6) is formed by a flat lightweight panel (12) with sandwich structure.

Abstract: A spark arrestor is provided. The spark arrestor includes a housing and an inlet tube. The inlet tube is configured to receive an exhaust flow into the housing. A first baffle is positioned within the housing. The first baffle has a curved configuration and is placed such that a convex side of the first baffle faces the exhaust flow. A second baffle is positioned within the housing. The first baffle and the second baffle are configured to separate particles from the exhaust flow. An outlet tube is present within the housing and is positioned centrally in relation to the first baffle and the second baffle. An end of the outlet tube is configured to contact a concave side of the first baffle. Further, the outlet tube includes a plurality of perforations at the end. The perforations are configured to receive air separated from the exhaust flow into the outlet tube.

Abstract: Embodiments in accordance with the present disclosure may provide a conformal transverse muffler including an enclosure shaped to fit around a bottom and a side of a feature of a vehicle. The enclosure may include a mid section fittable below the feature, and two side sections fittable in opposite locations only radially outside of a circumference of the spare tire well. The side sections may be thicker than the mid section and may have a vertical center above a vertical center of the mid section.

Abstract: The present invention relates to a housing (1) with a jacket (2), enclosing a housing interior space (7) in circumferential direction (8). For reducing self-induced vibrations of the jacket (2), at least one preloading device (14) is proposed, which is arranged in the housing interior space (7), which supports itself on a first supporting region (15) of the jacket (2) on the inside of the jacket (2) subject to a first preload (16) orientated towards the outside and which supports itself on a second supporting region (17) of the jacket (2) spaced from the first supporting region (15) on the jacket (2) on the inside subject to a second preload (18) orientated towards the outside.

Abstract: A vehicle exhaust system includes an exhaust component having an inlet and an outlet. The exhaust component is configured to be fixed to a vehicle body. A pipe extends through the exhaust component from the inlet to the outlet. The pipe is mounted for movement relative to the exhaust component at the inlet and the outlet.

Abstract: An exhaust muffler includes a pair of base members disposed substantially parallel to one another and defining an exhaust entry and exhaust exit. At least one wall member is coupled to the base members. The at least one wall member is intermediate the base members and intermediate the entry and exit. The at least one wall member includes a linear portion coupled to a semicircular portion.

Abstract: The present invention relates to a loudspeaker assembly and a method of assembling a loudspeaker assembly. In one or more embodiments, the invention comprises forming a front baffle comprising a first driver mounting portion, an intermediate portion, and an edge mounting portion. A first driver is installed in the first driver mounting portion proximate to a first driver aperture. A rear baffle is formed from a second material, which, in one or more embodiments, is less stiff than the first material from which the front baffle is formed. The rear baffle comprises a top portion, sidewalls, a recessed mounting portion, and an edge portion. The edge mounting portion of the front baffle is attached to the recessed mounting portion of the rear baffle such that an entirety of said front baffle is recessed within said rear baffle spaced apart from said open bottom portion.

Abstract: An acoustic baffle for reducing noise of a centrifugal fan includes a base for mounting with a fan outlet and a projection extending from the length of the base at a back side of the base and curving away from a top surface of the base. The projection continuously tapers along at least one side from an area proximate the base to an apex. The apex aligns with a fan tangency point, and the apex or a trough of the projection aligns with a midpoint of the outlet, when the acoustic baffle is installed in the outlet. The acoustic baffle effects a gradual variation in radial and tangential airflow at the blower outlet, to reduce fan blade passage tone.

Abstract: An exhaust muffler includes a pair of base members disposed substantially parallel to one another and defining an exhaust entry and exhaust exit. At least one wall member is coupled to the base members. The at least one wall member is intermediate the base members and intermediate the entry and exit. The at least one wall member includes a linear portion coupled to a semicircular portion.

Abstract: An exhaust system component (1) of an exhaust system (2) for an internal combustion engine, especially of a motor vehicle has an inner pipe (3) made of metal, which is exposed to exhaust gas during the operation of the exhaust system (2), a housing (4) made of plastic, which encloses a working space (6), and an outer pipe (5) made of metal. The outer pipe (5) is fastened at a first end area (7) to the inner pipe (3) and is rigidly connected at a second end area (9) to the housing (4) and encloses between these end areas (7, 9) an annular space (10) formed radially between the inner pipe (3) and outer pipe (5).

Abstract: An exhaust muffler of an internal combustion engine has pipe sections on the inflow side and on the outflow side, respectively, and a muffler housing that is in communication with the pipe sections. The muffler housing, which includes an outer casing and end walls, is made at least in sections of a plastic material.

Abstract: The invention relates to a composite sandwich panel (1) comprising at least a web (2) provided between an inner skin (3) and an outer skin (4), each skin being made of a composite material from a plurality of fibrous plies (5, 6, 7, 8), characterized in that a portion of the plies of the inner skin and/or of the outer skin each extends at least partially through the web at an uninterrupted area thereof in order to form together a through-reinforcement (9) extending from the inner skin to the outer skin of the composite sandwich panel. The invention further relates to an aircraft element including such a composite sandwich panel.

Abstract: A muffler 1 comprises a polymeric housing 3 and a support bracket 16 for mounting the muffler on a vehicle. The support bracket 16 is made of a polymer composite material comprising a polymer and fibres and is integrally formed with the housing 3. The muffler is made by a method comprising providing a support bracket 16 made of a polymer composite material comprising a polymer and fibres, and forming a polymer housing 3 by contacting molten polymer with the support bracket 16 to bond the support bracket to the housing.

Abstract: A muffler (1) for an exhaust system (2) of an internal combustion engine, especially of a motor vehicle, with a muffler housing (3), which encloses a housing interior space (5), and with at least one exhaust gas-carrying hollow body (4) with two half shells in a half shell construction. The hollow body is arranged in the housing interior space (5). The two half shells (14, 15) of the hollow body (4) are fastened to one another in the area of a separating plane (16). The assembly of the muffler (1) or of the hollow body (4) can be simplified if the two half shells (14, 15) are fastened to one another by fastening elements (17, 18), which are formed directly on the half shells (14, 15).

Abstract: A silencer cover adapts to a heat expansion of a silencer even when, for example, the silencer cover has a large size and is attached to the silencer over an area from the front to the rear. A silencer cover is provided for a silencer connected to a downstream end of an exhaust pipe of an engine. The silencer cover is fixed to a fixing support provided to the silencer. The silencer is heat-expanded with the fixing support part fixed as a base. The fixing support part is provided at a front end portion, in a vehicle front-rear direction, of the silencer. With a tail pipe constituting a rear end portion of the silencer, the rear end portion of the silencer is provided with a slide structure in which the silencer cover is slidably supported.

Abstract: A valve suitable for closing an orifice (36) of a structure (10) of a silencer (1) for a motor vehicle exhaust line, includes a closing component (44) which is connectable to the structure (10) and capable of adopting a position for closing the orifice (36). The closing component (44) is capable of rising by bending from its closure position. The closing component (44) includes a closure plate (54) capable of closing the orifice (36) and at least one connection plate (56) capable of connecting the closure plate (54) to the structure (10), the closure plate (54) and the or each connection plate (56) having differing thicknesses and/or being made of materials having differing mechanical characteristics.

Abstract: Various embodiments of reduced-size vehicles such as all-terrain vehicles (ATVs) and utility vehicles (UVs) are disclosed herein. In at least some embodiments, the vehicles include frames that are wider near the front and rear sections of the vehicles than within the mid-sections of the vehicles. This, in combination with the use of shock-absorbers that are substantially vertically oriented, allows for the opening-up of large interior cavities within the front and rear sections of the vehicles within which can be positioned large front and rear internal compartments that can provide storage/carrying capacity as well as added buoyancy for the vehicle, among other things. Also, in at least some embodiments, the vehicles can include special cooling and/or exhaust systems having components that are positioned substantially within the mid-sections of the vehicles, thus further increasing the amounts of space available for the cavities/compartments within the front and rear sections of the vehicles.

Abstract: A vehicle that sufficiently insulates heat between plural exhaust pipes connected to an engine. A cover member bridges over and covers the periphery of the exhaust pipes. A thermal insulation member fills in a space on a line connecting centers of the exhaust pipes, and a space in the vicinity of the line.

Abstract: A muffler adapted for connection with an exhaust pipe of an internal combustion engine which has an outer housing constructed of a plastic material. The housing has an inlet and at least one inwardly protruding rib extends around the interior of the housing inlet. The rib is constructed of a plastic material and forms an opening complementary in shape, but smaller in cross-sectional area, than the outer periphery of the exhaust pipe. The exhaust pipe is inserted into the inlet and the exhaust pipe and housing are vibrated relative to each other for a time period sufficient to at least partially melt the rib and cause the rib to seal around the exhaust pipe upon cooling.

Abstract: A lightweight exhaust component cover having a small number of components is disclosed. In the exhaust component cover, an internal plate is formed by bending part of a single plate at both ends, and the internal plate is joined to the inside surface of an external plate.

Abstract: The invention obtains a muffler structure for a vehicle which can suppress an emission sound. In a muffler shell for a muffler for a vehicle, there are formed a peripheral joint in which an upper shell and a lower shell corresponding to a plurality of shell structure portions are joined in respective peripheral joint flanges and, and an inter-isolation chamber joint in which the upper shell and the lower shell are joined in inter-isolation chamber joint flanges and in such a manner as to partition a space positioned in an inner side of the peripheral joint into a plurality of isolation chambers and arranged in parallel in a gas flow direction.

Abstract: A multi-stage low pressure drop muffler for a compressor including a first plate having a hole, a tube attached to the first plate, a plurality of holes disposed around the circumference of the tube, a plurality of tubes extending through a second plate, and an internal ring disposed on the second plate between the center of the second plate and the plurality of tubes. The muffler is designed to muffle a wide range of frequencies, minimize pressure reduction, improve fluid flow, and improve compressor efficiency.

Abstract: The exhaust chamber for a motor vehicle exhaust line includes: a main envelope defining a main enclosure and having an exhaust gas inlet and an exhaust gas outlet; and at least one saucer-shaped shell having an opening defined by a peripheral edge of the shell, the or each shell being tightly connected to an outside surface of the main envelope along the peripheral edge, the shell, with the main envelope, defining a secondary enclosure. The main envelope has, beneath the shell, a plurality of perforations for placing the main enclosure in communication with the secondary enclosure. The main envelope has, in a first area located beneath the shell, at least one slot for increasing the elasticity of the first area, and/or the main envelope has, in a second area that is not covered by the shell, at least one rib for increasing the stiffness of the second area.

Abstract: A motor vehicle exhaust line silencer includes: an upper shell (2) having a substantially flat upper end wall (16); and a lower shell (4) having a substantially flat lower end wall (24) parallel to the upper end wall (16), the upper and lower shells (2, 4) delimiting between them an internal volume (6) of the silencer (1). The silencer (1) includes at least an internal partition wall (12) substantially parallel to the upper (16) and lower (24) end walls and arranged in the internal volume (6), the upper (16) and lower (24) end walls having respective reliefs (48, 50, 52) projecting into the internal volume (6) and cooperating to immobilize the internal partition wall (12).

Abstract: A tuned acoustic attenuation device includes a housing defining a chamber within with air inlet and outlet channels opening into the chamber. An acoustic chamber or chambers are arranged on an exterior wall of or alternately within the housing and positioned to extend in a substantially lateral parallel relationship to the inlet or outlet channel and are configured as quarter wave tuners. The acoustic chambers may be realized within the housing by adapting housing stiffening support ribs of the housing. The acoustic attenuation characteristics of individual acoustic chambers cooperate to broaden the sound attenuation bandwidth or increase the attenuation at selected noise frequencies.

Abstract: A fairing is configured for use with the exhaust stack of a heavy-duty vehicle. The exhaust stack has an exhaust pipe with an intake end for receiving exhaust gases from an internal combustion engine and a discharge end for discharging the exhaust gases. The fairing includes a streamlined exterior surface and a cavity for receiving the discharge end of the exhaust pipe. An aperture extends through a rear portion of the exterior surface so that exhaust gases discharged from the discharge end of the exhaust pipe pass through the cavity and out of the aperture. The fairing further includes a coupler to couple the fairing to the exhaust pipe.

Abstract: A motorcycle has a muffler 40, a muffler cover 50 for covering a part of a side surface (outer peripheral surface) of the muffler 40 and an end cap 60 for covering the muffler 40 from a rear side thereof. The end cap 60 is separately formed from the muffler cover 50 and disposed away from the muffler cover 50. The muffler cover 50 is mounted on the muffler 40 in a manner such that a central axis of the muffler cover 50 is offset from a central axis of the muffler 40 in a radial direction.

Abstract: A housing for a flue gas unit is provided that includes a closed jacket and two end walls as well as an insert with inlet pipe an outlet pipe and retaining walls, wherein one of the pipes exits from the housing jacket radially. The housing jacket is cut out around the one pipe, the cutout is closed by a concave closing panel adapted to the shape of the cutout, and the closing panel has an opening for the radial pipe end.

Abstract: The present invention relates to a muffler facia assembly including a muffler with at least one thermoplastic shell formed into a facia assembly on a motor vehicle. The facia may be any suitable body part of a motor vehicle, such as a bumper, a rocker panel, an air dam, a spoiler, a sideboard or a body module. An assembly in accordance with the present invention includes structural members to provide crash management features to increase the strength and impact resistance. In accordance with the present invention, the long fiber thermoplastic material and moldings may also be combined with over-molding of preforms of unidirectional or woven inlays, which provide local structural performance. The use of such preforms is particularly suited to use in the manufacture of high temperature, structural articles such as bumper muffler combinations.

Abstract: An exhaust device for a vehicle, such as a scooter type motorcycle, comprises an exhaust pipe and a muffler. A first end portion of the exhaust pipe is connectable to an engine of the vehicle. The muffler includes an outer wall defining an internal space of the muffler. A second end portion of the exhaust pipe is located within the internal space of the muffler. A secondary air induction pipe supplies air to the exhaust pipe and is connected to a portion of the exhaust pipe that is within the internal space of the muffler. The secondary air induction pipe extends to the outside of the muffler via a through hole that has an edge, at least a portion of which is defined by each of a first member and a second member of the muffler.

Abstract: An exhaust-noise attenuation muffler includes two half-shells, each including an inner shell and an outer shell which are made through deep drawing of a sheet metal blank which can have a thickness between 0.3 mm and 0.5 m. The inner shell or the outer shell is provided with an embossment. After placing the inner shells in corresponding ones of the outer shells to form half-shells, two complementing half-shells are joined together.