An exhaust gas treatment device for an exhaust gas flow path of an internal combustion engine, includes a tubular carrier body (12) extending along a longitudinal axis (L) of the carrier with a first axial end area (18) and with a second axial end area (20) and at least one exhaust gas treatment element (34) carried in the carrier body (12) with the interposition of at least one fiber material layer (36). The carrier body (2) includes carrier elements (14, 16) connected to one another in a first connection area (22) and in a second connection area (24) that extend from the first axial end area (18) to the second axial end area (20). At least one connection area (22, 24) does not extend in parallel to the longitudinal axis (L) of the carrier from the first axial end area (18) to the second axial end area (20).

An exhaust gas duct system for an internal combustion engine includes an upstream, first exhaust gas pipe area (30), a downstream, second exhaust gas pipe area (34) adjoining the first exhaust gas pipe area (30) in a transition area (38) in an exhaust gas flow direction (G), and a liquid drain channel area (60) in the transition area. The drain channel area is open from the exhaust gas flow volume (78) in the first exhaust gas pipe area (30) or/and in the second exhaust gas pipe area (34) to a liquid collection volume (80).

An insulating device for a thermal and/or acoustic insulation of an exhaust system of a vehicle has a first half shell including at least a first connection rim and a second half shell including at least a second connection rim, the first half shell and the second half shell being connected by a welded joint at the connection rims. The connection rims are reshaped into a multiple fold. Further disclosed are a vehicle exhaust system having an exhaust gas-carrying duct and an insulating device circumferentially surrounding the duct, as well as a method for producing an insulating device for a thermal and/or acoustic insulation of an exhaust system of a vehicle.

A modular exhaust manifold 1 for a motor vehicle, with multiple adjoining manifold pipe modules, having: at least one engine flange, via which an inlet connection pipe of the manifold pipe modules can be connected to a cylinder head of the motor vehicle; at least one manifold pipe module, configured as a collector pipe module and having a contact flange, via which the exhaust manifold can be connected to an exhaust system of the motor vehicle, the respective manifold pipe modules having an overlap contour of a length a that permits the telescoping of two manifold pipe modules to an insertion depth t for coupling purposes, at least two manifold pipe modules being identical in shape, and a variation of the insertion depth t of at least 5 mm to 30 mm or 10 mm or 15 mm or 20 mm or 25 mm being obtained by the formation of length a of the overlap contour. A method for producing a manifold formed from multiple adjoining manifold pipe modules.

An exhaust muffler to be attached to an engine body includes a casing that includes: a rear member facing the engine body and a front member opposing to the rear member while maintaining a gap between the front member and the rear member, the gap forming a path in which exhaust gas discharged from the engine body flows; at least one guiding member that is disposed in the gap of the casing, extends from the rear member to the front member, and has a through-hole into which a fastening member that fastens the casing to the engine body is inserted; and a catalyst holding member that holds a catalyst that purifies the exhaust gas and is accommodated in the gap of the casing while being supported by the at least one guiding member.

A muffler assembly unit for an exhaust system of an internal combustion engine, especially in a vehicle, includes a muffler (42) with a muffler housing (10). The muffler housing (10) is elongated along a longitudinal axis of the housing. A housing jacket (40) encloses the muffler housing (10). At least one air guiding bulge (34) is provided on the housing jacket (40).

An apparatus comprises a housing comprising a housing first portion and a housing second portion. The housing first portion comprises a first joint portion overlapping a second joint portion of the housing second portion so as to form a housing joint. A clamp is positioned on the housing joint and comprises a base portion. A first surface of the base portion is positioned on the housing joint. A plurality of legs extend from the base portion towards the housing each of which are spaced from each other around the housing joint. A plurality of flange segments extend from each side of the base portion away from the housing. A band is positioned on a second surface of the base portion opposite the first surface and around the clamp. The band is positioned between the plurality of flange segments and operatively coupled to the housing via the clamp.

A muffler includes an elongated muffler shell body with a first muffler end cap mounted on the first end of the muffler shell body in a manner defining a first muffler joint and a second muffler end cap mounted on the second end of the muffler shell body in a manner defining a second muffler joint. A louver and baffle assembly is mounted within an interior of the muffler shell body. The first end of the muffler shell body includes a first shell bead/ridge and the second end of the muffler shell body includes a second shell bead/ridge, and each of the circumferential edges of the first muffler end cap and the second muffler end cap are formed to define cap bead/ridges shaped and dimensioned for engagement with the first shell bead/ridge of the first end of the muffler shell body and the second shell bead/ridge of the second end of the muffler shell body.

A flowhood is provided to which an upstream conduit and a downstream conduit of an emissions cleaning module can be connected includes a first section and a second section. The second section includes a first aperture for connection to the upstream conduit and a second aperture for connection to the downstream conduit. The first and second apertures may face substantially in the same direction to permit a compact arrangement. A body of the first section may be shaped to channel gas flow from the first aperture to the second aperture. An emissions cleaning module including such a flowhood is also described.

An exhaust manifold includes an inner assembly that defines an exhaust gas passage and an outer housing assembly that surrounds the inner assembly. The outer housing assembly includes a first housing component configured for attachment to an engine and a second housing component configured for attachment to a turbocharger. The first and second housing components cooperate to surround the inner assembly. At least one fastener secures the first and second housing components together to generate a compressive force that seals and holds the inner assembly in a gas tight manner.