30results about "Gas chambers" patented technology

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.

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 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).

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.

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.

The invention relates to an exhaust gas aftertreatment device, wherein the exhaust gas aftertreatment device (A32) comprises a throughflow unit (A33), which is held in a housing (A34) of the exhaust gas aftertreatment device (A32), wherein the throughflow unit (A33) comprises at least one wire body (A36, A40), wherein the wire body (A36, A40) has at least one first region (A37, A41) having a first mean density and at least one second region (A38, A42) having a second mean density, the second mean density being at least 1.5 times the first mean density, and wherein the wire body (A36, A40) is held in a clamped manner on the second region (A38, A42) between at least two clamping portions (A46, A47) of the housing (A34).

A scrubber outlet assembly (100) is disclosed, the scrubber outlet assembly (100) comprising: a duct (200) having an inner surface (230), wherein the inner surface (230) has: a first portion (231) made of a first electrically conductive material; a second portion (232) made of a second electrically conductive material different from the first electrically conductive material; and a region (240) comprising at least a portion of the first portion (231) and at least a portion of the second portion (232). The scrubber outlet assembly (100) comprises a barrier (300) located inside the inner surface of the duct (200). The scrubber outlet assembly (100) defines a flow path through the duct (200), along which, in use, scrubbing water is able to flow from a scrubber (10), and the barrier (300) fluidly isolates the region (240) from the flow path.

The invention relates to a nickel-magnesium-silicon alloy and a preparation method thereof as well as an exhaust manifold and a preparation method thereof, and belongs to the technical field of alloys. The nickel-magnesium-silicon alloy consists of the following components in percentage by mass: 10 to 20 percent of Mg, 30 to 50 percent of Ni, 30 to 40 percent of Si and the balance of Fe and inevitable impurities. The preparation method of the nickel-magnesium-silicon alloy comprises the following steps of (1) mixing a silicon raw material, a magnesium raw material, a nickel raw material, a protective agent and a cosolvent, (2) raising the temperature to 1300-1350 DEG C and smelting the materials into molten liquid, and (3) slagging off, stirring, cooling, discharging from a furnace and forming to obtain the nickel-magnesium-silicon alloy.

An exhaust muffler includes 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, wherein the inner surface defines a main exhaust gas flow path (P). At least one divider allows the exhaust pipe to pass therethrough and also divides the hollow body into a first chamber and a second chamber. The first chamber defines a reservoir fluidly associated with the main exhaust gas flow path (P) via the second set of orifices and leading to the environment via the first set of orifices, and the second chamber is fluidly associated with the main exhaust gas flow path (P) via the third set of orifices.

An exhaust purification apparatus includes a connection portion that connects an exhaust manifold to a catalytic converter. The connection portion includes a diffusion portion and a coupling portion. The coupling portion is configured such that a cross-sectional area of a passage of the coupling portion increases from a connection point with the diffusion portion toward a connection point with the catalytic converter. The side surface of the diffusion portion includes a connection surface to which the exhaust manifold is connected, a collision surface with which the exhaust gas that has flowed into the diffusion portion from the exhaust manifold strikes, a first coupling surface, and a second coupling surface. Cross-sectional shapes of the first coupling surface, the second coupling surface, and the collision surface are arcuate. The cross-sectional shape of the collision surface has a smaller curvature than the cross-sectional shapes of the first and second coupling surfaces.

System for interconnecting a urea-based reducing agent injector to an exhaust gas post-treatment device comprising an injector (UJ), a flange (FL) arranged to couple the injector to an exhaust gas line, a gasket (G) arranged between the injector and the flange, wherein the gasket is a sandwich, formed by two external layers (SI, S3) and an intermediate layer (S2) formed by insulating material. The Third layer of the gasket confines an air volume (V) surrounding the injector (UJ).

Specifically, the damping device, advantageously in the form of a silencer, for damping or avoiding pressure impulses such as pulsations in a fluid supply circuit, comprises a damping housing (10), a damping tube (28) extending in the damping housing (10) having an inlet (20) and an outlet (22) for the fluid flow to be damped, and at least one branch opening (30), the branch opening forming a fluid-guiding connection between the interior of the damping tube (28) and a damping volume (38) enclosed between the damping tube (28) and the damping housing (10), characterized in that each of the branch openings (30) has a tubular connecting portion (32) with a definable length and a definable diameter, the connecting portion opening into the damping volume (38).

Disclosed is a scrubber outlet assembly (100), the scrubber outlet assembly (100) comprising a pipe (200) having an inner surface, wherein the inner surface (230) has a first portion (231) made from a first electrically conductive material, a second portion (231) made from a second electrically conductive material dissimilar to the first electrically conductive material, and a region (240) comprising at least a part of the first portion (231) and at least a part of the second portion (232). The scrubber outlet assembly (100) comprises a barrier (300) located inwardly of the inner surface of the pipe (200). The scrubber outlet assembly (100) defines a flow path through the pipe (200) along which washwater is flowable from a scrubber (10) in use, and the barrier (300) fluidically isolates the region (240) from the flow path.

The present invention discloses titanium alloys and products made therefrom. The present invention relates to non-ferrous metallurgy, namely the development of a low-alloyed titanium alloy characterized by high temperature strength and thermal stability, which can be used to manufacture products for long-term use at high temperatures, namely parts of the exhaust system of automobile engines. The titanium alloy contains aluminum, molybdenum, silicon, oxygen, nitrogen, iron and hydrogen, and the alloying elements, calculated in wt%, are: 1.5~3.0 Aluminum, 0.1-0.5 molybdenum, Silicone 0.1 to 0.6 Iron up to 0.2, Oxygen up to 0.15, Up to 0.1 carbon, Nitrogen up to 0.03, and 0.015 maximum hydrogen; and The balance includes titanium and unavoidable impurities. In one embodiment, the titanium alloy further contains 0.5 to 1.5 wt % copper, and a product is manufactured from the titanium alloy. The technical result of embodiments of the present invention is the production of titanium alloys that feature a combination of high mechanical and performance properties, including higher levels of creep resistance, and have cold forming capabilities.

The present disclosure provides an "Exhaust Restriction Tube for Vehicle Muffler". A vehicle exhaust system is provided. The exhaust system can include a muffler including a housing, an inlet pipe extending therethrough, and an outlet pipe partially disposed therein. The exhaust system can also include a restriction tube that can have a tapered body inserted within an end of the outlet pipe, the tapered body disposed between a baffle and a wall of the housing. The restriction tube can also include an inlet portion flared from the tapered body, the inlet portion configured to attenuate noise of exhaust gas entering the outlet pipe.

A variable engine muffler comprising an interior acoustic chamber and peripheral conduit elements defining a conduit through the muffler. A peripheral conduit element may be movable over a range from closed a position where the conduit is closed to the acoustic chamber and to an open position where the conduit is open to the acoustic chamber.

A novel sound absorbing sheet material with a unique combination of micro-louver slit parameters and patterns provides superior noise attenuation and a reduced perforation area (less than 3.5%) to better protect fiberglass insulation when used in a muffler assembly. A muffler assembly is disclosed incorporating the novel sound absorbing sheet as the inner exhaust conduit.

An ultra-pure ferritic stainless steel, a manufacturing method, and use thereof. The ultra-pure ferritic stainless steel comprises in percentage by weight, C≤0.025%, N≤0.025%, Si≤1.00%, Mn≤1.20%, Cr: 18.00%-24.00%, Nb: 0.40%-0.75%, Mo: 1.75%-2.50%, W: 0.80%-1.20%, Cu: 0.30%-0.60%, Al≤0.015%, Ti≤0.01%, P≤0.03%, S≤0.01%, and satisfies 3.4%≤2Nb+Mo+W≤5.2% and 32%≤Cr+4.7Mo+2.4W+11.5Cu≤45%, with the balance being Fe and inevitable impurities. With the composite strengthening of Nb, W and Mo, and the reasonable matching of Cu, Al and Ti, the obtained ultra-pure ferritic stainless steel can meet the requirements of working and serving at higher temperatures, has good high-temperature strength, high-temperature fatigue life and high-temperature oxidation resistance, has good cold working performance and good brazing performance.

Provided is: a ventilation-type silencer with a high absorption rate, that suppresses the occurrence of wind noise, and having a high muffling effect in a low-frequency band; and an acoustic impedance structure. In an acoustic impedance change structure in which sound propagates, there are at least a first impedance matching region in which the acoustic impedance connected to an inlet portion gradually decreases, an acoustic impedance constant region, and an outlet portion in the stated order, where the acoustic impedance in the inlet portion is Zin, acoustic impedance in the acoustic impedance constant region is Zcham, and the acoustic impedance in the outlet portion is Zout, Zcham<Zin and Zcham<Zout are satisfied, and there is a first termination structure that is acoustically connected to the acoustic impedance constant region.

To improve exhaust gas purification performance without upsizing a catalyst volume, suppress variation among cylinders, and appropriately detect an air fuel ratio.SOLUTION: An internal combustion engine exhaust purification apparatus 1 includes: an exhaust manifold 2 having one or multiple exhaust flow paths allowing exhaust gas, exhausted from multiple cylinders, to flow; a catalytic converter 3 provided downstream of the exhaust flow path; and a collision diffusion chamber 4 having a collision surface 4a that is provided between the exhaust flow path and catalytic converter 3 and where a main flow of the exhaust gas introduced through the exhaust flow path collides with an internal wall. In the apparatus, a contraction part 5 whose flow path cross sectional area is smaller than a part where the exhaust gas flows within the collision diffusion chamber 4 is provided downstream of the collision diffusion chamber 4, and an air-fuel ratio sensor 7 for detecting an air-fuel ratio of the engine is provided downstream of the contraction part 5.SELECTED DRAWING: Figure 3

The present invention relates to a burner (18) for an exhaust system (10) of an internal combustion engine, comprising a combustion chamber (22) formed by a chamber element (20) of the burner (18) and capable of igniting and burning a mixture comprising air as a first fluid and fuel as a second fluid, thereby heating components of the exhaust system (10), in particular exhaust gas aftertreatment elements, and / or exhaust gases of the internal combustion engine flowing through the exhaust system (10); a passage (42) communicating with a combustion chamber (22) through which at least one fluid can be introduced into the combustion chamber (22); and a closure element (52) movable relative to the chamber element (20) between a closed position (S) that fluidly separates the passage (42) from the combustion chamber (22) and at least one open position (F) that fluidly connects the passage (42) to the combustion chamber (22), the chamber element (20) having a recess (54) in which the closure element (52) is at least partially housed in the open position (F).

Gas Sensor Manifold The invention relates to a manifold (1) for a gas sensor, comprising a body (2) of substantially cylindrical shape, hollow, with a first axis (A) substantially perpendicular to a second axis (B) of the gas flow, and comprising a gas inlet (3) formed by cutting the distal end (6) of the body (2) substantially with a first plane (P1) parallel to a third axis perpendicular to the first axis (A) and the second axis (B), the inlet (3) opening facing the gas flow (F). Abbreviated figure: Figure 1

Device (1) for providing a liquid additive (2) for exhaust gas purification, comprising at least one channel (3) for conveying the liquid additive with a channel wall (4), wherein an insert component (5) is inserted into the channel (3), which extends at least sectionally along the channel (3), wherein the insert component (5) consists of a solid material.

To provide an engine suppressing variation of components of EGR gas flowing into an EGR passage.SOLUTION: An engine 1 includes: a plurality of cylinders 2a, 2b, 2c; exhaust air passages 5, 5a which are communicated with the cylinders 2a, 2b, 2c and through which exhaust gas in the cylinders flows; an EGR passage 9 reflowing the exhaust gas in the cylinders 2a, 2b, 2c to an intake passage on the upstream side of the cylinders 2a, 2b, 2c; a diffusion chamber 6 to which the exhaust gas passages 5, 5a are connected and which has a diffusion wall 6f diffusing the exhaust gas by crash of the exhaust gas jetted from the exhaust gas passages 5, 5a; and a connector passage 7 connecting the diffusion chamber 6 and an exhaust gas purifying device 8 purifying the exhaust gas. One edge part of the EGR passage 9 is connected to the connector passage 7.SELECTED DRAWING: Figure 1

A heat-resistant, austenitic cast steel comprising by mass 0.30 to 0.50% of C, 0.50 to 2.0% of Si, 0.50 to 2.0% of Mn, 0.10 to 0.40% of S, 16.0 to 21.0% of Cr, 6.0 to 12.0% of Ni, 0.5 to 2.0% of Nb, and 0.80% or less of Cu, the balance being Fe and inevitable impurities.

An exhaust purification apparatus includes a particulate filter, first and second exhaust passages. The particulate filter removes particulate matter. The first and second exhaust passages are coupled in parallel and coupled to an exhaust passage. The first exhaust passage communicates with a tail pipe via a secondary filter in an initial state of the particulate filter. After a start of use of the particulate filter, communication of the first exhaust passage with the tail pipe is blocked when the secondary filter is clogged with the particulate matter. The second exhaust passage is closed in the initial state. After the start, the second exhaust passage communicates with the tail pipe when the secondary filter is clogged with the particulate matter to cause an increase in pressure loss of the secondary filter and an increase in an exhaust pressure, and thus discharge of the liquid and / or evaporation of the liquid occurs.

The invention relates to a silencer having a cavity (10) at least partially delimited by a housing (13), a silencing device (20), arranged within the cavity (10), for reducing noise of the exhaust gas flow (S), and a water separation device (30), arranged within the cavity (10) upstream of the silencing device (20), for separating water from the exhaust gas flow (S). A flow guiding device (23) that is arranged in a silencing chamber (21) has an expansion element (231) for radially expanding at least part of the exhaust gas flow (S) flowing through the inlet opening (211) and forms a return flow channel (230), within which a flow path for the exhaust gas flow (S) is provided, the flow direction (SR) of which runs counter to the main flow direction (R).

An exhaust silencer comprising a hollow body and an exhaust pipe, which is at least partially located within the hollow body. The hollow body defines a first set of openings, and the exhaust pipe defines a second and a third set of openings. The exhaust pipe has an inner surface and an outer surface, the inner surface defining a primary exhaust flow path (P). At least one partition allows the exhaust pipe to pass through and also divides the hollow body into a first and a second chamber. The first chamber is a reservoir connected to the primary exhaust flow path (P) via the second set of openings and to the environment via the first set of openings. The second chamber is in fluid communication with the primary exhaust flow path (P) via the third set of openings.

The internal combustion engine 9 comprises at least one piston¬ cylinder system 13 with a suction port and an exhaust port. An exhaust pipe 17, along which a catalytic converter 19 and a silencer 21 are arranged in sequence, is connected to the exhaust port 13.5. The catalytic converter 19 is placed upstream of the silencer 21 with respect to the direction of exhaust gas flow along the exhaust pipe 17. A resonant system 29 is connected to the exhaust pipe 17, and comprises a resonant tube 25 and a resonant cavity 27. The resonant tube 25 places the exhaust pipe 17 in fluid connection 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 the direction of exhaust gas flow along the exhaust pipe 17. The resonant tube 25 is tangent to the exhaust pipe 17 at their connection point 23.