摘要:
A muffler having an inner shell of two deep-drawn inner sheet metal plates laid one atop the other and a housing shell of at least two deep-drawn outer sheet metal plates laid one atop the other. The inner shell has an encircling edge while the housing shell has an encircling housing flange with a lock seam connection which seals the housing shell. The edge of the inner shell is designed so that it barely touches the wall of the housing shell and is held in a spring-like fashion only between clamping creases of the housing shell.
摘要:
A motor vehicle muffler comprising a housing comprising two half shells, and an exhaust conduit having two ends. The conduit is disposed within the housing and is securely joined to the housing at its two ends. Filler material within the housing surrounds the exhaust conduit, the exhaust conduit being in contact only with the filler material between the two ends of the exhaust conduit. The housing has a length and a width and a depth, its length and width being greater than its depth, and at least one plate extends in the direction of the depth of the housing, between the half shells, and is securely joined to the half shells without touching the exhaust conduit. For this purpose, the plate has notches in which leg portions of the exhaust conduit are disposed in spaced relation to the plate. The half shells of the housing are joined to each other by a folded seam and are joined to the ends of the exhaust conduit by welded joints, and are also joined to the plate by welded joints.
摘要:
A muffler of the type used to attenuate exhaust gas noise in exhaust systems of automobiles, trucks, or the like, particularly characterized by a gas flow conduit which is axially slotted and laterally flattened to form a closure and a pair of openings axially inward of the closure, wherein the end walls of the shell are pressed into engagement with the conduit ends to close the conduit and support the conduit.
摘要:
A muffler housing consists essentially of two shell parts and is penetrated by pipes arranged between the shell parts. Fastening screws are inserted through the pipes into receiving holes at one of the shell parts and are accessible there.
摘要:
An exhaust duct part for the outflow of a fluid, in particular for the outflow of the exhaust gases of an internal combustion engine, includes a continuous external casing of substantially constant cross-section and containing at least one acoustic attenuation unit positioned longitudinally in the external casing so as to delimit at least one fluid transfer section of a length determined in such a way that the transfer section participates in the acoustic attenuation function of the exhaust duct part. The attenuation unit includes an internal casing of substantially constant cross-section and, together with the external casing, delimits at least one longitudinal peripheral channel for the passage of the fluid. The internal casing has a circular or elliptical cross-section and includes at least one zone deformed radially in such a way as to increase the surface of exchange between the fluid and the attenuation unit.
摘要:
A device for conducting away exhaust gases from internal combustion engines comprises at least one sleeve-shaped silencer which encloses an exhaust pipe and forms an enclosed space around said exhaust pipe. The silencer is made up of at least two sleeve-shaped parts, or of a sleeve-shaped part and base part, which are joined together. The portion of the exhaust pipe in the space inside the silencer features perforations and/or sound absorbing elements. The inside of the silencer may be fitted with sound absorbers. The sleeve-shaped parts of the silencer and if desired, the exhaust pipe and/or the sound absorbers are made of aluminum and/or an aluminum alloy. The sleeve-shaped parts of the silencer are manufactured by impact extrusion, deep drawing or a similar method and all joined together preferably radial to their longitudinal axis. The ends these parts taper down to tube-shaped extensions which fit over the exhaust pipe. To join the sleeve-shaped parts and the tube-shaped extensions to the exhaust pipe a region is provided on which an interlocking profile is created by electromagnetic forces.
摘要:
A tube-to-plate connection includes a plate defining an aperture where the tube is to be attached to the plate. The portion of the plate surrounding the aperture includes a plurality of fingers extending away from the plane of the plate and projecting radially inwardly toward the axis of the aperture. The end of the tube lies generally against the radially inward projections of the fingers to prevent movement of the tube longitudinally further through the plate. The tube side wall includes a radially deformed portion adjacent each finger to prevent rotation of the tube in the plate. The fingers and the tube end include portions adjacent the radially inward projections of the fingers which are flared radially outward to prevent movement of the tube longitudinally out of engagement with the plate.
摘要:
The invention relates to a muffler consisting of an external tube housing, pressed intermediate and terminal disks, and exhaust tubes for the exhaust gases extending through and connected to at least the terminal disks. The disks and tubes are each connected together by a gas-tight seal which includes a pair of beads bent around a disk flange into tight engagement with opposite disk sides. The beads are defined by outwardly folded portions of the tube and are disposed between tubular-shaped portions of the tube.
摘要:
A mechanical connection of a gas flow tube to a partition in lieu of spot welding is provided by means of angularly spaced projections, preferably louvers, which engage one side of a muffler partition and deformed nibs on an end of the tube engaging the end of an annular neck on the partition.