381results 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).

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 mixer assembly includes a mixer housing, an inlet opening, an inlet plate, a support plate, a support plate opening, a conveying tube, an outlet plate, and an outlet plate opening. The mixer housing is coupled to the upstream housing. The inlet plate and the support plate define a first mixing chamber. The inlet opening is configured to receive exhaust from the upstream housing and deliver exhaust to the first mixing chamber. The support plate and the outlet plate define a second mixing chamber. The conveying tube is positioned in the second mixing chamber. The support plate opening is configured to receive treated exhaust from the first mixing chamber and deliver the treated exhaust to the second mixing chamber. The treated exhaust circumferentially flows through the second mixing chamber and through the conveying tube. The conveying tube delivers reductant to the outlet plate opening.

A sound damper for an exhaust gas system of an internal combustion engine includes a sound damper housing, at least one intermediate wall which is arranged in a housing interior and at least one sound damper connection pipe. The sound damper connection pipe is supported in a first pipe end region on the sound damper housing and is arranged in a second pipe end region on a support element which is arranged in the housing interior. The support element forms an integral component of an intermediate wall. The sound damper connection pipe introduces exhaust gas into the housing interior or directs exhaust gas out of the housing interior.

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.

An exhaust structure for an engine includes: a catalyst converter configured to purify exhaust gas of the engine; a catalyst pipe in which the catalyst converter is accommodated; and a lead-out pipe configured to lead the exhaust gas to the catalyst pipe. The lead-out pipe is closed at a downstream end thereof, and has a plurality of discharge holes formed in a peripheral wall thereof.

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 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

A component for an exhaust system of an internal combustion engine is described, the component having a wall in which at least one opening is arranged. A perforated cover (16) at least partially closes the opening, the cover (16) being mounted on the wall by means of a support (18), sections (32, 34) of the cover (16) engaging in the opening (28, 30) arranged on the support (18). Furthermore, an exhaust system having such a component and a method for producing such a component are proposed, wherein the cover (16) is mounted on the support (18) by engaging at least one section (32, 34) of the cover (16) to the opening (28, 30) arranged on the support (18).

The invention discloses an exhaust pipe assembly, an exhaust system and a vehicle, and relates to the technical field of vehicle parts. The exhaust pipe assembly comprises a fixed pipe, a movable pipe and a driving assembly; the movable pipe is annularly sleeved with the fixed pipe, and part of the inner wall of the fixed pipe is attached to part of the outer wall of the movable pipe. The movable pipe is provided with a first end and a second end which are opposite to each other, the first end is of an open structure and located outside the fixed pipe, the second end is of a closed structure and located inside the fixed pipe, and a plurality of open holes are formed in the side wall of the movable pipe close to the area with the second end; the driving assembly is connected with the fixed pipe and used for driving the movable pipe to slide in the fixed pipe so as to adjust the number of the holes which are not blocked by the inner wall of the fixed pipe. Under the action of the driving assembly, the movable pipe can slide relative to the fixed pipe, so that the number of the holes which are not blocked by the inner wall of the fixed pipe is changed, the exhaust back pressure of the exhaust pipe assembly is adjusted, and the torque and power requirements of an engine under different working conditions are met.

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.

An exhaust gas after-treatment system 1 for a gas or dual-fuel engine, comprising a catalyst 3 configured to allow exhaust gas to flow therethrough, a control tube 4 extending through a recess in the

There is provided a straddled vehicle that is less likely to enter a wheelie state in circuit traveling or the like; thestraddled vehicle (1) includes a front wheel (24), a rear wheel (49), and an exhaust device (29) that discharges exhaust gas; the exhaust device (29) including an exhaust port (73) that injects the exhaust gas to apply a reaction force F to the front wheel (24); the reaction force (F) suppresses the front wheel (24) from floating up from the road surface (G); by suppressing the front wheel (24) from floating up from the road surface (G), it is possible to suppress the straddled vehicle (1) from entering a wheelie state in circuit traveling or the like; in addition, the exhaust device (29) using the reaction force (F) generated when the exhaust gas is injected to suppress the front wheel (24) from floating up from the road surface (G); therefore, the exhaust device 29 can contribute to the posture control of the straddled vehicle (1) by effectively utilizing the exhaust gas.

The invention relates to an exhaust muffler for an internal combustion engine used in a vehicle. The exhaust muffler controls a quality of the exhaust noise without substantially increasing the size of the exhaust muffler. Additionally, the exhaust muffler increases the exhaust noise (produces a booming effect) without substantially increasing the size of the exhaust muffler.

The invention relates to a power train (10) comprising: - a combustion engine which includes at least one cylinder (11), - a turbocharger (20) including a compressor (21) and a turbine (22) mounted on a rotational shaft (23); and - an exhaust gas treatment device (30) which includes a catalyst (31) and a vacuum chamber (32). According to the invention, the compressor (21) produces negative pressure at its inlet by sucking the air from the negative-pressure tube (41), and the fluid connection between the negative-pressure tube (41) and the vacuum chamber (32) makes it possible to create a vacuum in the chamber, which isolates the catalyst (31).

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).

The invention relates to an evaporation and gas mixing device for an exhaust gas aftertreatment system for mixing an exhaust gas stream from an exhaust gas aftertreatment system with an evaporated reducing agent.

Reducing agent delivery unit (10) comprising: a fluid injection valve (12) having a fluid inlet (30) arranged at a first end of the fluid injection valve (12) for receiving a reducing agent, and having a fluid outlet (32) arranged at a second end of the fluid injection valve (12) for discharging the reducing agent, wherein the fluid injection valve (12) defines a fluid path for the reducing agent from the fluid inlet (30) to the fluid outlet (32), wherein the fluid injection valve (12) comprises: a tubular element (42) having one end disposed at the fluid inlet (30) of the fluid injection valve (12), the tubular element (42) being configured to conduct reducing agent along the fluid path; a filter (204) disposed in the tubular member (42) proximal to the fluid inlet (30) of the fluid injection valve (12); a volume reducing element (208) arranged in the tubular element (42) downstream of the filter (204) with respect to a direction of the reducing agent flow along the fluid path from the fluid inlet (30) to the fluid outlet (32) of the fluid injection valve (12), wherein the volume reducing element (208) contacts an inner surface of the tubular element (42) and comprises a bore (208A) defined by the volume reducing element (208), wherein the bore (208A) defines at least a portion of the fluid path through the fluid injection valve (12), wherein the diameter of the bore is between 12% and 20% of the outer diameter of the volume reducing element (208) and the volume reducing element (208) occupies a volume in the tubular element (42) such that the volume reducing element (208) reduces a volume of the fluid path occupied by the reducing agent in the fluid injection valve (12); and a cap member (206) in which the filter (204) is arranged, the cap member (206) being engaged with and secured to the volume reducing member (208) such that the filter (204), the volume reducing member (208) and the cap member (206) form a single member.

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).

An exhaust gas routing component for an exhaust system of an internal combustion engine comprises a tubular component body (14) with a first component body end region (16) and a second component body end region (20) arranged in the direction of a component body longitudinal axis (L) at a distance from the first component body end region (16), wherein the component body (14) comprises a tubular outer body (24) and a tubular inner body (26) received in the tubular outer body (24), wherein the inner body (26) is fixed in a fastening area (98) on the outer body, and wherein a sliding guide (96) is provided acting between the outer body and the inner body (26), allowing a relative movement of the inner body (24) with respect to the outer body (24) outside the fastening area (98).

Static mixer (11) for an exhaust pipe of an internal combustion engine, comprising an elongated hollow metal body (13) having a shape substantially corresponding to a rotating body with respect to an axis of symmetry (S), inside which a cavity (15) is defined, where the elongated hollow metal body (13) also defines opposing seats (17, 19), one of which is provided with an axial opening; the invention relates to a mixer comprising a mixer body (1) and defining a closed side wall (23) connected to said opposing bases (17, 19), the side wall (23) having at least one radial opening (25) on which is arranged a concave vane (27) extending radially from a portion of a peripheral edge (29) of the radial opening (25) to the outside of the side wall (23) of the mixer body and comprising a portion of the radial opening (25), the concave vane (27) being arranged so as to extend radially from a portion of the peripheral edge (29) of the radial opening (25) to the outside of the side wall (23) of the mixer body. The invention is characterized in that it is designed to define a respective concave screen or spoon (31) in a first angular direction with respect to the axis of symmetry and an access opening (33) in front of the concave screen or spoon (31) for the passage of gas in an opposite second direction.

An internal combustion engine 9 comprises at least one piston-cylinder system 13 having an intake port and an exhaust port. An exhaust pipe 17 is connected to the exhaust port 13.5, and a catalytic converter 19 and a muffler 21 are arranged in this order along the exhaust pipe. The catalytic converter 19 is located upstream of the muffler 21 with respect to the exhaust gas flow direction along the exhaust pipe 17. The resonant system 29 is connected to the exhaust pipe 17 and includes a resonant pipe 25 and a resonant cavity 27. A resonant tube 25 fluidly couples the exhaust pipe 17 with the resonant cavity 27, and the resonant tube 25 is connected to the exhaust pipe 17 upstream of the catalytic converter 19 with respect to an exhaust gas flow direction along the exhaust pipe 17. The resonant tube 25 and the exhaust tube 17 are tangent at the connection position thereof.

The invention relates to a device (1) for the aftertreatment of exhaust gases from an internal combustion engine, comprising a metal matrix (2) through which a flow can pass along the main flow direction, the matrix (2) being formed by a plurality of metal foils that are stacked on top of each other to form a layer stack and that are wound to form the matrix (2), with a plurality of flow channels formed between the metal foils, the matrix (2) being housed in a casing tube (4, 6, 7), an inner tube (3) being arranged between the matrix (2) and the casing tube (4, 6, 7), the inner tube (3) having a structuring (5), whereby contact between the inner tube (3) and the matrix (2) and / or the casing tube (4) is only partially formed.

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.