153results about "Gas passages" patented technology

A mixing section for an exhaust system of an internal combustion engine comprises a mixing section housing (16) through which exhaust gas (A) flows in a main exhaust gas flow direction (H), and a tubular mixing body (18) arranged in the mixing section housing (16) and extending in the direction of a longitudinal axis (L) of the mixing body, wherein the mixing body (18) defines a first flow volume (24) through which exhaust gas (A) flows radially outwards and defines a second flow volume (26) through which exhaust gas (A) flows radially inwards, wherein the mixing body (18) has a tubular first mixing body part (20) extending in the direction of the longitudinal axis (L) of the mixing body and at least one extension in the direction of the longitudinal axis of the mixing body on an outer surface (32) of the first mixing body part (20) facing the second flow volume (26) or on an inner surface (30) of the first mixing body part (20) facing the first flow volume (24). (L) extending,a tubular second mixing body part (34), wherein the second mixing body part (34) has a plurality of first projections (36) arranged adjacent to one another in the direction of the longitudinal axis (L) of the mixing body and in the circumferential direction around the longitudinal axis (L) of the mixing body and directed towards the first mixing body part (20), and wherein the second mixing body part (34) bears against the first mixing body part (20) in the region of at least a part of the first projections (36), preferably all of the first projections (36).

A muffler for an exhaust system of an internal combustion engine includes a muffler housing having a peripheral wall elongated along a longitudinal axis of the muffler housing. The peripheral wall has first and second end walls. A muffler insert is surrounded by the peripheral wall and is supported thereon. The muffler insert has a retaining wall extending in a direction of the longitudinal axis. The peripheral wall has a peripheral wall opening and a first exhaust-gas routing pipe has a first end region and is positioned with the first end region thereof engaging in the peripheral wall opening. The first exhaust-gas routing pipe has a second end region and is secured by the second end region thereof to the retaining wall. The first exhaust-gas routing pipe is of multi-part configuration and has a first pipe part and a second pipe part.

A silencer 20 includes an external shell member 31 having a silencer chamber SP defined therein and an internal pipe 51 disposed in the silencer chamber SP. The external shell member 31 has an external shell opening 60 formed in a peripheral wall thereof, and the internal pipe 51 has a pipe opening 68 is formed in a peripheral wall thereof. The internal pipe 51 includes a cylindrical projection 69 protruding radially outwards from the peripheral wall of the internal pipe 51. The projection 69 is provided along the circumference of the pipe opening 68 about the axis of the pipe opening 68. An oxygen sensor 64 is positioned so as to plug the pipe opening 68. The silencer 20 includes a cap 72 that covers the external shell opening 66. The cap 72 is joined to a portion of the external shell member 31 around the external shell opening 66 and to the projection 69 of the internal pipe 51. An outer radius dimension d1 of the projection 69 is set smaller than an inner radius dimension d2 of the external shell member 31.

To provide a mixing section for an exhaust gas device of an internal combustion engine for guaranteeing efficient mixing of exhaust gas and a reactant injected into the exhaust gas in a structurally simple constitution.SOLUTION: Wherein the mixing body 18 comprises a tubular first mixture part 20 extending in the direction of the mixing body longitudinal axis L and at least one tubular second mixture part 34 extending in the direction of the mixing body longitudinal axis L on an outer side 32 of the first mixture part 20 facing the second flow volume or on an inner side 30 of the first mixture part 20 facing the first flow volume, the second mixture part 34 comprises a plurality of first moldings 36 which are arranged adjacent to each other in the direction of the longitudinal mixing axis L and in the circumferential direction around the longitudinal mixing axis L and which are directed to the first mixture part 20, wherein the second mixture part 34 is in contact with the first mixture part 20 at least in the area of a part of the first moldings 36, preferably in the area of all first moldings 36.SELECTED DRAWING: Figure 2

Conveying unit (1) for a liquid additive, comprising a block (2) with channels (3) to which at least one active component (4) for conveying the liquid additive is mounted, wherein at least three channels (3) in the block (2) open into a cylindrical collecting chamber (5), and a deformable sleeve-shaped element (6) is arranged in the collecting chamber (5), wherein the sleeve-shaped element (6) has at least one sealing lip (26) which seals the collecting chamber against the surroundings of the block.

A plurality of independent passages (51), a collecting passage (52), a catalyst device (6), and a swirling part (53) are provided to an exhaust passage, the plurality of independent passages (51) individually extending from exhaust port opening ends (12), exhaust gas that passes through the independent passages being collected in the collecting passage (52), the swirling part (53) connecting the collecting passage to the catalyst device (6) to cause the exhaust gas to swirl in the swirling part. The plurality of independent passages and the collecting passage have, as a whole, a shape that is bent in such a way as to bulge toward an exhaust side from the plurality of exhaust port opening ends and to extend downward, and the swirling part has a shape that causes the exhaust gas led out from the collecting passage to swirl about an axis extending along a cylinder arrangement direction.

An exhaust system and a method for joining components of an exhaust system comprise obtaining an outer sleeve, a first pipe with a first end, and a second pipe with a second end. The method includes inserting the first end of the first pipe inside the outer sleeve to define a first overlap, inserting the second end of the second pipe inside the outer sleeve to define a second overlap, and radially deforming the outer sleeve and the first pipe inward at the first overlap. At the second overlap, the outer sleeve and the second pipe are radially deformed inward. The outer sleeve and the first pipe, as well as the outer sleeve and the second pipe, are pressed into engagement along the length of the first and second overlaps to define a pipe joint.

Exhaust aftertreatment system for an internal combustion engine (10), comprising an exhaust system (20) connected to an outlet (14) of the internal combustion engine (10), wherein the exhaust system has an exhaust channel (24) in which, in the direction of flow of exhaust gas through the exhaust channel (24), a turbine (28) of an exhaust gas turbocharger (26) and, downstream of the turbine (28), a particulate filter (32) are arranged, wherein the particulate filter (32) has a filter body (58) and wherein the particulate filter (32) has a housing (86) which tapers conically downstream of the filter body (58) in the form of an outlet funnel (64), characterized in that the outlet funnel (64) branches into a second funnel (66) and a third funnel (68), wherein the second funnel (66) is connected to a low-pressure exhaust gas recirculation (40) and the third funnel (68) to a main channel (50) of the exhaust system (20) is connectedwherein the second funnel (66) carries a filter element (70) at its inlet (88), and wherein the second funnel (66) has an oval inlet geometry at its inlet (88).

The invention relates to a flow device (3) having a flow converging section (15) for converging two fluid flows (11.1, 11.2), the flow converging section (15) having a first inflow region (17.1) for a first fluid flow (11.1) and a second inflow region (17.2) for a second fluid flow (11.2) and an outflow region (19) for a total fluid flow (13) formed by converging the fluid flows (11.1, 11.2), the inflow region (17.1, 17.2) is connected to the outflow region (19) in a flow manner by means of introduction sections (31.1, 31.2) which each lead into a common outflow region (19), the introduction cross-section of the introduction sections (31.1, 31.2) being constricted along a respective flow line from the inflow region (17.1, 17.2) to the outflow region (19) in a constriction direction (V), and wherein the inlet cross-section of the introduction sections (31.1, 31.2) is constricted in a constriction direction (V), the inlet cross-section of the introduction sections (31.1, 31.2) being constricted along a respective flow line from the inflow region (17.1, 17.2) to the outflow region (19). The inlet sections (31.1, 31.2) are arranged adjacent to one another in the outflow region (19) in the contraction direction (V) and are separated from one another in a separating section (46) of the outflow region (19) facing the inflow region (17.1, 17.2) by a separating wall (47) oriented transversely to the contraction direction (V), according to the invention, the partition wall (47) terminates in the flow direction before an outflow end (51) of the outflow region (19), such that the introduction sections (31.1, 31.2) converge in a converging section (49) of the outflow region (19) facing away from the inflow region (17.1, 17.2).

A mixer for an exhaust system of an internal combustion engine for mixing exhaust gas and reactant comprises a mixing chamber (18), a reactant delivery arrangement (28) for delivering reactant into the mixing chamber (18) axially between an upstream mixer wall (14) and a downstream mixer wall (16), an inlet opening arrangement (22) in the upstream mixer wall (14), an outlet opening arrangement (34) in the downstream mixer wall (16), and a flow guide arrangement (40) arranged between the upstream mixer wall (14) and the downstream mixer wall (16), wherein the flow guide arrangement (40) provides a first flow path (42) leading from the inlet opening arrangement (22) to the outlet opening arrangement (34) and a second flow path (42') leading from the inlet opening arrangement (22) to the outlet opening arrangement (34). each flow path (42,42') has at least two flow channels (44, 48, 52, 44', 48' 52') leading from the inlet opening arrangement (22) to the outlet opening arrangement (34).

A silencer for an exhaust system of an internal combustion engine comprises a silencer housing (12) with a circumferential wall (14) surrounding a silencer interior (24), at least one compensating intermediate wall (44) arranged in the silencer interior (24), and at least one exhaust pipe (30) passing through at least one compensating intermediate wall (44) in the area of ​​a compensating pipe opening (42) formed therein, wherein the compensating pipe opening (42) has an inner compensating opening dimension (IL) transversely to an opening center axis (Mo) of the compensating pipe opening (42) in at least one compensating opening longitudinal direction (RA) orthogonal to the opening center axis (Mo), and the exhaust pipe (30) passing through the compensating pipe opening (42) has a pipe outer dimension (AL) in the compensating opening longitudinal direction (RA), wherein the compensating opening inner dimension (IL) is larger than the pipe outer dimension (AL) in the compensating opening longitudinal direction (RA).

The invention relates to an exhaust gas system (6) comprising a two-stroke engine (16), wherein the exhaust gas system (6) has an exhaust gas line (13) and at least two catalyst support bodies (2, 3), the exhaust gas line (13) forms a concentric region (10) with an inner central channel (15) and with a concentrically outer circumferential channel (5), a first catalyst support body (2) is situated in the inner central channel (15) and a second catalyst support body (3) is situated in the concentrically outer circumferential channel (5), and the exhaust gas system (6) and the catalyst support bodies (2, 3) are configured such that exhaust gas coming from the two-stroke engine (16) at a flow speed flows through the at least two catalyst support bodies (2, 3) one after the other as the dwell time increases.

Exhaust assemblies for vehicles and methods of installing exhaust systems on vehicles are disclosed. An exhaust assembly for a vehicle includes an exhaust inlet to receive combustion products from a drive unit, a catalytic converter to control emissions from combustion products received by the exhaust system, and a first piping assembly coupled to the exhaust inlet and the catalytic converter.

An exhaust gas cooling device (1) for a hot gas source (8), wherein the exhaust gas cooling device (1) comprises: a housing (3.6) connectable to an exhaust pipe (1.1) of the hot gas source (8) with an axis of symmetry (3.5), a Venturi assembly (5) coupled to the housing (3.6) for introducing exhaust gas (1.2) and ambient air (9), and an exhaust gas / ambient air mixture discharged into the environment (2), wherein the Venturi assembly (5) has a Venturi channel (5.1) which can be fluidically coupled to the exhaust pipe (1.1) and an inlet opening (5.2) for ambient air which is limited by the Venturi channel (5.1) and the exhaust pipe (1.1), the Venturi channel (5.1) serves to guide exhaust gas-ambient air mixture, wherein the Venturi channel (5.1) has an outlet opening (5.3) and the outlet line (2) has an inlet opening (2.1), wherein the outlet opening (5.3) and the inlet opening (2.1) are spaced apart, and wherein the Venturi channel (5.1) and the outlet pipe (2) open into the housing (3.6), characterized by a) that the outlet opening (5.3) of the Venturi channel (5.1) and the inlet opening (2.1) of the outlet line (2) are positioned in alignment, wherein a deflection element (4) is provided between the outlet opening (5.3) and the inlet opening (2.1) which causes a deflection in a direction Rq with a directional component perpendicular to the direction of the gas outlet A of the outlet opening (5.3), or b) that the outlet opening (5.3) of the Venturi channel (5.1) causes a gas outlet A directed radially to the axis of symmetry (3.5), wherein the outlet line (2) with the inlet opening (2.1) causes a gas inlet E directed parallel to the axis of symmetry (3.5).

The present invention relates to exhaust mixers. Methods and systems for mixers are provided. In one example, a system can include a mixer disposed in a passageway, and the mixer is configured to mix two different gases upstream of a device.

A silencer for an exhaust system comprises a circumferential wall (12) defining a silencer interior (14), at least one silencer wall (18, 20) adjoining the circumferential wall (12) and / or arranged in the silencer interior, at least one silencer tube extending in the direction of a pipe axis (R) and passing through a pipe opening (40) in at least one silencer wall (16, 18, 20), wherein at least one silencer tube (30) passing through a pipe opening (40) in a silencer wall (18) is connected to the silencer wall (18) by means of a bayonet fitting (32).

The present invention relates to an apapratus (28) for mixing a plurality of exhaust gas flows for an exhaust gas system (10) of an internal combustion engine. The apparatus (28) has a first exhaust gas supply line (32), a second exhaust gas supply line (34), and an exhaust gas mixing chamber (36) into which the first exhaust gas supply line (32) and the second exhaust gas supply line (34) open. An exhaust gas discharge line (38) is connected to the exhaust gas mixing chamber (36) in order to discharge exhaust gas from the exhaust gas mixing chamber (36). An interfering body (40) is located in the exhaust gas mixing chamber (36). An exhaust gas sensor (46) is located on the exhaust gas discharge line (38).

An exhaust muffler comprises a hollow body and an exhaust pipe disposed at least partially within the hollow body. The hollow body defines a first set of apertures on the hollow body and the exhaust pipe defines a second set of apertures and a third set of apertures on the exhaust pipe. The exhaust pipe has an inner surface and an outer surface. The inner surface defines a primary exhaust gas flow path (P). At least one divider allows the exhaust pipe to pass therethrough, and divides the hollow body into a first chamber and a second chamber. The first chamber defines a reservoir fluidly associated with the primary exhaust gas flow path (P) via the second set of apertures, and to the environment via the first set of apertures. The second chamber is fluidly associated with the primary exhaust gas flow path (P) via the third set of apertures.

Exhaust system(1) of an internal combustion engine of a motor vehicle • with at least one exhaust pipe (2) which carries exhaust gas from the internal combustion engine to the environment of the motor vehicle, • with at least one pressure tap pipe (4) which is pressurised to the exhaust pipe (2), wherein a condensate separator (5) is provided for collecting condensate dripping from the pressure tap pipe (4) into the exhaust pipe (2), the condensate separator (5) comprises a collection container (6) which is arranged below an outlet area of ​​the pressure tap pipe (4) in the exhaust pipe (2), and the condensate separator (5) has a nozzle (7) connected to the collection container (6) with a flange (21) for fixing the condensate separator (5) in an opening of the exhaust pipe (2), and the nozzle (7) has a recess (17) for receiving the pressure tap pipe (4), wherein the pressure tap pipe (4) is pressurised to the nozzle (7) of the condensate separator (5), characterized in that the nozzle (7) has a surrounding recess (17). threaded section (18) haswherein the pressure tap tube (4) arranged in the recess (17) is connected pressure-tight to the nozzle (7) of the condensate separator (5) by means of a cutting ring (19) and a union nut (20) screwed onto the threaded section (18).

Energy recovery unit (8) for use in a vehicle exhaust system, the energy recovery unit comprising: an inlet (24) for receiving exhaust gas from the exhaust system; an outlet (26) for returning exhaust gas to the exhaust system; several thermoelectric generators arranged between the inlet and the outlet; and a gas pipe network connected to the inlet and the outlet, the gas pipe network comprising a first line and a second line extending between the inlet and the outlet and arranged along corresponding opposite ends of the several thermoelectric generators; wherein a generator axis (T) extending perpendicular to a heat exchanger surface of at least one of the several thermoelectric generators is inclined with respect to a longitudinal axis (L) of the energy recovery unit.

The present invention relates to an exhaust gas purification device 27 includes: a first case 28 communicating with an exhaust manifold 6 of an engine 1 and internally including a first exhaust gas purification body 30 for removing a carbon compound; and a second case 29 communicating with an exhaust outlet of the first case 28 and internally including second exhaust gas purification bodies 31 to 33 for removing a nitrogen compound. The first case 28 and the second case 29 are arranged above the engine 1 in an L-shape to respectively extend along two side surfaces of the engine 1, the two side surfaces being adjacent to each other.

To prevent a lid member for closing an end of a pipe from falling off from the pipe.SOLUTION: A muffler mounted on a vehicle includes an outer shell member, a pipe, and a closed part. The pipe is inserted into an opening of the outer shell member forming the internal space, and forms an exhaust flow path through which exhaust gas flows. The closing portion is provided at an end portion of the pipe that opens to the internal space, and is configured to close the exhaust flow path. The closed portion includes a slit and a lid member. The slit is provided in a wall of the pipe and extends from a first end to a second end in a direction intersecting a flow direction of the exhaust gas along the wall. The lid member includes a main body portion that closes the exhaust flow path, and an insertion portion that extends from the main body portion and is inserted into the slit.SELECTED DRAWING: Figure 6

The invention relates to a chamber mixer (10) for an exhaust after-treatment system of a motor vehicle, wherein a first fluid (12) can flow through the internal volume (18) of the chamber mixer in a through-flow direction (26), said inner volume being delimited by a housing (16), wherein at least one housing side of the housing (16) is double-walled and has an outer wall (30) and an inner wall (32) which divides the internal volume (18) into an inner chamber (34) and an outer chamber (36), wherein the fluid flowing in through an inlet opening (22) can be separated into a main flow (38) flowing through the inner chamber (34) and an auxiliary flow (40) flowing through the outer chamber (36), and wherein a double swirl (50) can be applied to the main flow (38) by means of a flow device (48). The chamber mixer also comprises a fluid introduction device (56) having an introduction end (58) which is arranged in the outer chamber (36) and via which a second fluid (14) can be injected into the inner chamber (34) through an introduction opening (60) in the inner wall (32).

The invention relates to a muffler for an exhaust system, comprising a circumferential wall (12) defining a muffler interior (14), at least one muffler wall (18, 20) connected to the circumferential wall (12) and / or arranged in the muffler interior, at least one muffler tube extending in the direction of a tube axis (R) and passing through a tube passage opening (40) in the at least one muffler wall (16, 18, 20), wherein at least one muffler tube (30), which passes through a tube passage opening (40) in the muffler wall (18), is connected to the muffler wall (18) by means of a bayonet joint (32). The invention also relates to a method for producing a muffler.

To provide a muffler capable of simplifying assembling work.SOLUTION: The silencing device 20 of the present disclosure includes the outer shell member 31 in which the silencing space SP is formed, and the internal pipe 51 disposed in the silencing space SP. An outer shell opening 60 is formed in the peripheral wall of the outer shell member 31, and a pipe opening 68 is formed in the peripheral wall of the internal pipe 51. The internal pipe 51 has a cylindrical protruding portion 69 protruding radially outward from the peripheral wall. The protruding portion 69 is provided around the axis of the pipe opening 68. The oxygen sensor 64 is disposed so as to close the pipe opening 68. The muffling device 20 further includes a cap 72 that covers the shell opening 66. The cap 72 is joined to a peripheral portion of the outer shell opening 66 in the outer shell member 31 and the protrusion 69 of the internal pipe 51. The outside diameter d1 of the projection 69 is set to be smaller than the inside diameter d2 of the outer shell member 31.SELECTED DRAWING: Figure 4

A silencer for noise reduction at an internal combustion engine is disclosed. The silencer comprises an input opening, an output opening, at least one chamber, and at least one partition configured to be inserted into and removed from the at least one chamber to convert the silencer to a collector.

A catalytic converter includes a housing and a catalyst carrier disposed in a receiving chamber of the housing. The housing has an inlet opening and at least two outlet openings. The inlet opening is formed in an inlet wall which completely seals the receiving chamber, except for the inlet opening, in a direction running parallel to a main direction of flow and pointing away from the at least two outlet openings and the inlet wall extends in a plane running perpendicular to the main direction of flow. The at least two outlet openings are formed in an outlet wall which completely seals the receiving chamber, except for the at least two outlet openings, in a direction running parallel to the main direction of flow and pointing away from the inlet opening and the outlet wall extends in a plane running perpendicular to the main direction of flow.

Reducing agent supply system (4) for an exhaust aftertreatment system (2) with: a reducing agent pump (14) which is configured to extract reducing agent from a reducing agent tank (10) and supply it to a Venturi nozzle (16) connected to an outlet of the reducing agent pump (14); a one-way valve (18) whose inlet is connected to an outlet of the Venturi nozzle (16); and a branch (16e) which leads into a narrow point (16c) of the Venturi nozzle (16); wherein the one-way valve (18) is designed to open at an opening pressure that is greater than the operating pressure of the exhaust aftertreatment system (2).