27results about "Sound absorption" patented technology

The invention relates to a system (1) for providing an operating fluid in a motor vehicle (2), comprising a tank (3), in which the operating fluid is stored, and a dispensing point (4), at which the operating fluid can be provided, and comprising a delivery module (5), which is designed to deliver and / or meter the operating fluid from the tank (3) to the dispensing point (4), wherein the delivery module (5) has a first delivery module unit (6) and a second delivery module unit (7), wherein the first delivery module unit (6) is arranged on the tank (3) and wherein the second delivery module unit (7) is arranged at a distance from the tank (3) and is connected to the first delivery module unit (6) via at least one line (8), wherein the delivery module (5) has a delivery pump (9) for delivering the operating fluid, wherein the delivery pump (9) is arranged in the second delivery module unit (7).

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.

An exhaust assembly (1) for an internal combustion engine (40) is disclosed. The exhaust assembly (1) comprises a housing (3) comprising an exhaust inlet (11), an exhaust outlet (12), and an inner surface (3') delimiting an inner volume (V) of the housing (3). The exhaust assembly (1) further comprises an exhaust aftertreatment unit (u1) arranged inside the inner volume (V). The exhaust aftertreatment unit (u1) comprises an outlet (u1") fluidly connected to the inner volume (V) of the housing (3). The exhaust assembly (1) further comprises at least one perforated wall (w1, w2) arranged inside the inner volume (V) of the housing (3) and a noise attenuating material (9, 9') placed between the at least one perforated wall (w1, w2) and the inner surface (3') of the housing (3). The present disclosure further relates to an internal combustion engine (40) and a vehicle (2) comprising an internal combustion engine (40).

A system for generating power with reduced or negative carbon emissions. The system includes a power plant portion having a power generation unit having an input coupled to a supply of a hydrocarbon fuel and having an energy exchange pathway. The system also includes a direct air capture (DAC) portion having a CO2 adsorption device having a CO2 adsorption material and a blower electrically coupled to the power generation unit, the blower directing a flow of air through the CO2 adsorption device in a carbon capture mode, wherein the CO2 adsorption device is coupled to and in energy communication with the energy exchange pathway for releasing adsorbed CO2 in a carbon release mode.

A mounting mat for mounting a pollution control element into a housing wherein the mounting mat is needle-punched or stitch-bonded and has a thickness of from about 8.0 mm to 15.0 mm, preferably from 8.8 mm to 15.0 mm, more preferably from 10.0 mm to 15.0 mm, and a bulk density from 160 kg / m 3 to 180 kg / m 3 , and contains at least by 50 % by weight of polycrystalline fibers preferably at least 75 % by weight (based on the weight of the mat), preferably Al2O3 and less SiO2, and has a total organic content of less than 2.9 % (measured per LOI), preferably from 0.6 % to 2.6 %, preferably surface additives like wax or oil, wherein the mat has a canning force (Fc) of less than 5700 N, preferably less than 4500 N, for example from 3000 to 4500 N as measured according to the test described in the method section. Also provided are methods of making such mats and pollution control devices containing them.

The present invention provides a heat insulation device for an engine exhaust pipe, belonging to the technical field of engine exhaust pipes. The heat insulation device for the engine exhaust pipe includes an exhaust structure and a heat insulation structure. The exhaust structure includes an exhaust pipe and a connecting column, and the connecting column is fixed on the exhaust pipe. The heat insulation structure includes a heat insulation cover and a heat insulation sleeve. The heat insulation sleeve is fixed between the heat insulation cover and a fixing plate. The heat insulation sleeve includes a high-temperature resistant cloth, an aluminum foil cloth, a wire mesh and an inorganic fiber felt. The aluminum foil cloth is fixed on one side of the high-temperature resistant cloth. The inorganic fiber felt is fixed between the wire mesh and the fixing plate. The heat insulation cover, the fixing plate and the heat insulation sleeve are installed on the exhaust pipe. The present invention can effectively reduce the high temperature generated by the engine exhaust pipe, increase the accessibility of the engine, reduce heat radiation, reduce the probability of scalding caused by accidental touch, and is safer and more reliable to use.

An exhaust muffler includes a hollow body at least partially housing an exhaust pipe. The exhaust pipe is adapted to allow exhaust gas to flow therethrough. Further, the exhaust pipe defines a plurality of apertures on the exhaust pipe such that exhaust gas flowing through the exhaust pipe can flow out of the exhaust pipe within the hollow body through the plurality of apertures and / or back into the exhaust pipe from the hollow body. The secondary tube is disposed within the hollow body and is filled with a sound absorbing material. At least one baffle is engaged with the exhaust pipe and the secondary pipe to allow at least one of the exhaust pipe and the secondary pipe to pass therethrough.

A system for generating electricity with reduced or negative carbon emissions. The system includes a power plant section having an electricity generating unit having an input coupled to a hydrocarbon fuel supply and an energy exchange path. The system also includes a direct air capture (DAC) section having a CO2 adsorption device having a CO2 adsorbent material and a ventilator electrically coupled to the electricity generating unit, the ventilator directing air flow through the CO2 adsorption device in a carbon capture mode, wherein the CO2 adsorption device is coupled to and in energy communication with the energy exchange path for releasing adsorbed CO2 in a carbon release mode.

The invention relates to a method for producing a molded part from glass fiber and / or mineral fiber material with an inorganic binder. The inorganic binder is cured using electromagnetic radiation in order to form the molded part. The tool is designed to be at least partly permeable for the electromagnetic radiation for curing purposes, and the inorganic binder is a binder which can be cured by electromagnetic radiation. The invention further relates to a molded part which can be obtained in the aforementioned manner. Finally, the invention relates to a manufacturing unit for producing a molded part from glass fiber and / or mineral fiber material and an inorganic binder. The manufacturing unit comprises a device for providing a tool for forming the molded part, a device for introducing the glass fiber and / or mineral fiber material and the inorganic binder into the tool, a device for generating electromagnetic radiation to cure the inorganic binder in order to form a molded part, and optionally a device for removing the molded part from the tool.

An exhaust system component comprises a housing including an inner surface having a first longitudinal axis, a core positioned within the housing and including an outer surface circumferentially extending about a second longitudinal axis offset from the first axis, and a mat positioned within the housing and compressed between the core and the housing. The mat is wrapped about an outer surface of the core more than one revolution such that a first circumferentially extending zone exists where the mat is x layers thick and a second circumferentially extending zone exists where the mat is x+1 layers thick. The second longitudinal axis is offset from the first longitudinal axis in a direction toward the first circumferentially extending zone.

System (1) for providing an operating fluid in a motor vehicle (2), comprising a tank (3) in which the operating fluid is stored and a dispensing point (4) at which the operating fluid can be provided, as well as comprising a conveying module (5) which is designed to convey and / or meter the operating fluid from the tank (3) to the dispensing point (4), wherein the conveying module (5) has a first conveying module unit (6) and a second conveying module unit (7), wherein the first conveying module unit (6) is arranged on the tank (3) and wherein the second conveying module unit (7) is arranged at a distance from the tank (3) and is connected to the first conveying module unit (6) by at least one line (8), wherein the conveying module (5) has a conveying pump (9) for conveying the operating fluid, wherein the conveying pump (9) is arranged in the second conveying module unit (7).

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.

A hand-held work device comprises an internal combustion engine (8) and an exhaust silencer (23). The exhaust silencer (23) includes a first silencer chamber (47) and a second silencer chamber (48). The exhaust silencer (23) includes an exhaust aftertreatment device (26) comprising at least one flow-through unit (31). The flow-through unit (31) is arranged in a flow path from the first silencer chamber (47) to the second silencer chamber (48). The thickness (b) of the flow-through unit (31), measured from an upstream end face (36) to a downstream end face (37) of the flow-through unit (31) in the area through which exhaust gas flows, is at least 10 mm over at least 70% of the cross-section. The exhaust aftertreatment device (26) does not have a catalytically active coating.

An exhaust assembly (1) for an internal combustion engine (40) is disclosed. The exhaust assembly (1) comprises a housing (3) comprising an exhaust inlet (11), an exhaust outlet (12), and an inner surface (3') delimiting an inner volume (V) of the housing (3). The exhaust assembly (1) further comprises an exhaust aftertreatment unit (u1) arranged inside the inner volume (V). The exhaust aftertreatment unit (u1) comprises an outlet (u1'') fluidly connected to the inner volume (V) of the housing (3). The exhaust assembly (1) further comprises at least one perforated wall (w1, w2) arranged inside the inner volume (V) of the housing (3) and a noise attenuating material (9, 9') placed between the at least one perforated wall (w1, w2) and the inner surface (3') of the housing (3). The present disclosure further relates to an internal combustion engine (40) and a vehicle (2) comprising an internal combustion engine (40).

Various implementations include a muffler including a shell and a tube assembly. The shell defines a shell cavity and has a shell longitudinal axis, a shell first end, and a shell second end. The shell first end and the shell second end each define a shell opening extending to the shell cavity. The tube assembly is disposed within the shell cavity. The tube assembly includes three or more nested tubes. Each of the three or more nested tubes has a tube longitudinal axis parallel to the shell longitudinal axis, a tube first end, and a tube second end. Each of the three or more nested tubes defines a plurality of perforations. The three or more nested tubes are disposed circumferentially adjacent each other around the shell longitudinal axis such that portions of sides of the three or more nested tubes form an open portion extending along the shell longitudinal axis.

A system for generating electricity with reduced or negative carbon emissions. The system includes a power plant section having an electricity generating unit having an input coupled to a hydrocarbon fuel supply and an energy exchange path. The system also includes a direct air capture (DAC) section having a CO2 adsorption device having a CO2 adsorbent material and a ventilator electrically coupled to the electricity generating unit, the ventilator directing air flow through the CO2 adsorption device in a carbon capture mode, wherein the CO2 adsorption device is coupled to and in energy communication with the energy exchange path for releasing adsorbed CO2 in a carbon release mode.

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).

An apparatus for discharging condensate water from an exhaust system includes a housing configured to be secured to a piping component of the exhaust system and having an inlet in fluid communication with the piping component and an outlet to the atmosphere. An inlet and an outlet are arranged spaced apart from each other, and a discharge element formed of a porous material is arranged in the housing between the inlet and the outlet.

The present disclosure relates to an installation structure of a valve, which includes a setting portion, a valve, and a buffer portion. The valve seat of the valve has a cylindrical connecting portion, and the cylindrical setting portion is inserted into the connecting portion, or the connecting portion is inserted into the setting portion. The buffer portion is disposed between the setting portion and the connecting portion, and the buffer portion is fixed to the setting portion and the connecting portion respectively. In this case, when either one of the setting portion and the connecting portion is set as the first portion and the other is set as the second portion, the first portion has a peripheral wall and an opening portion where the peripheral wall is not formed. At least a part of the fixing portion that fixes the second portion and the buffer portion is disposed at a position adjacent to the opening portion in the radial direction of the setting portion.

An exhaust muffler includes a hollow body that at least partially houses an exhaust pipe. The exhaust pipe is adapted to allow a flow of exhaust gases therethrough. Further, the exhaust pipe defines a plurality of orifices on the exhaust pipe such that the exhaust gases flowing through the exhaust pipe can flow out of the exhaust pipe within the hollow body and / or flow back into the exhaust pipe from the hollow body through the plurality of orifices. A secondary pipe is disposed within the hollow body and filled with a sound absorbing material. At least one baffle is engaged with the exhaust pipe and the secondary pipe to allow at least one of the exhaust pipe and the secondary pipe to pass therethrough.

Various embodiments include a muffler having a housing and a tube assembly. The housing defines a housing cavity and has a housing longitudinal axis, a housing first end, and a housing second end. The housing first end and the housing second end each define a housing opening extending to the housing cavity. A tube assembly is disposed within the housing cavity. The tube assembly includes three or more nested tubes. Each of the three or more nested tubes has a tube longitudinal axis parallel to the housing longitudinal axis, a tube first end, and a tube second end. Each of the three or more nested tubes defines a plurality of perforations. The three or more nested tubes are disposed circumferentially adjacent to each other about the longitudinal axis of the housing such that a portion of a side of the three or more nested tubes forms an open portion extending along the longitudinal axis of the housing.

Protective device for a vehicle component. Protective device (51) for a vehicle component (81) (100), in particular intended to at least partially cover a vehicle component (81) (100), in particular a catalytic reduction treatment system (5) for an engine (3), the device being characterized in that it comprises a protective cover (52) and an attachment system (60) for an electrical connection cable (82), the attachment system (60) being mechanically linked to the protective cover (52), the attachment system (60) comprising at least one attachment element (61), and in that it comprises a layer (55) of at least one thermally insulating material, intended to be disposed between said vehicle component (81) and said cover (52) and the attachment system (60). Figure for the abstract: 4

Various implementations include a muffler having a shell and a tube assembly. The shell defines a shell cavity and has a shell longitudinal axis, a shell first end, and a shell second end, each of which defines a shell opening extending into the shell cavity. The tube assembly is disposed within the shell cavity. The tube assembly includes three or more nested tubes. Each of the three or more nested tubes has a tube longitudinal axis parallel to the shell longitudinal axis, a tube first end, and a tube second end. Each of the three or more nested tubes defines a plurality of perforations. The three or more nested tubes are disposed circumferentially adjacent to one another around the shell longitudinal axis such that portions of the sides of the three or more nested tubes form openings extending along the shell longitudinal axis.

An exhaust duct assembly for conveying exhaust gases emanating from a combustion zone to atmosphere is disclosed. The assembly includes: an exhaust gas outlet for exhausting exhaust gas into the atmosphere; and an acoustic duct portion located upstream of the exhaust gas outlet, the acoustic duct portion having a peripheral wall defining a through-passage arranged and constructed to promote propagation of sound there-through. The acoustic duct portion has a length in a flow direction that is at least 50% of an average hydraulic diameter of the through-passage.

This invention relates to the field of unmanned aerial vehicle noise reduction technology and discloses an engine noise reduction structure, comprising a housing. one end of which is connected to a fuel engine exhaust pipe, at least one exhaust port is provided on the housing, and at least two noise reduction plates and at least one filter plate are provided inside the housing; wherein each noise reduction plate is arranged in a staggered manner to form a curved noise reduction exhaust channel, and a filling material is provided inside the noise reduction exhaust channel; wherein exhaust gas enters the housing through the fuel engine exhaust pipe, and is guided to discharge from the exhaust port through the filter plate and the staggered noise reduction plates in sequence. In the present invention, the engine noise reduction structure is provided with a curved noise reduction exhaust channel formed by a staggered arrangement of multiple noise reduction plates, and a filling material is set in the noise reduction exhaust channel, so that the exhaust gas is reflected multiple times through the curved noise reduction exhaust channel, greatly reducing the intensity of noise and achieving the silencing function of a large hybrid unmanned aerial vehicle.

This disclosure describes, in part, systems and structures for an exhaust assembly that includes an exhaust tube and an insulation structure surrounding the exhaust tube. The insulation structure is offset from the exhaust tube to create an air gap around the exhaust tube and the insulation structure. The air gap is used to transport forced air by a fan system to mitigate and remove heat from the exhaust tube to a disposal location. The insulation structure includes an inner shell and an outer shell that contain an insulation component to provide a reduced surface temperature during steady state operation within a threshold range.

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.