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Matches 1 - 50 out of 14,833

Document Document Title
WO/2019/029880A1
The invention relates to a device (1) for mixture preparation for an exhaust-gas aftertreatment system, comprising an injection device (2) for injecting a liquid reducing agent (3) into an exhaust-gas flow, and comprising a mixing pipe (...  
WO/2019/025774A1
Sound and/or vibration in a vehicle (10) is enhanced by using at least one active powertrain mount (24, 26) to selectively generate vibrations in the vehicle body (12), at least some of which are audible to a person in a cabin of the veh...  
WO/2019/018673A1
An acoustic damper includes a low porosity layer section and a housing. The low porosity layer section is formed in a liner of a gas turbine combustor and has an arrangement of elongated generally S-shaped slots formed therein. The housi...  
WO/2019/015342A1
Disclosed is a silent mobile electric supply vehicle, comprising an automobile tractor unit (100), a semi-trailer (200) and a container electric station (300), wherein the automobile tractor unit (100) is connected to the semi-trailer (2...  
WO/2019/007700A1
The invention relates to a method for operating a motor vehicle noise cancellation system (1) comprising a Helmholtz resonator (2) with a Helmholtz chamber (13), a neck (3), and a connection opening (4); a speaker (5) within the Helmholt...  
WO/2019/009268A1
A valve device (10) is disposed in an exhaust passageway (9b) of a muffler (1) and is provided with: a valve body (20) which opens and closes the exhaust passageway (9b) depending on the exhaust pressure of exhaust gas (G); an elastic me...  
WO/2018/234826A1
Apparatus for modifying acoustic transmission comprises an array of structures arranged along a transmission path and each having a major axis and a minor axis, the structures being arranged such that a minor axis of each void or structu...  
WO/2018/234212A1
The invention relates to a loudspeaker system (1) for a motor vehicle, having a loudspeaker housing (1.1), which comprises a connection opening (1.2) for acoustically connecting the loudspeaker housing (1.1) to the environment or to an i...  
WO/2018/234141A1
The invention relates to an exhaust-gas aftertreatment system for a spark-ignited internal combustion engine based on the Otto principle. The internal combustion engine is connected on the outlet side to an exhaust-gas system, wherein, i...  
WO/2018/235797A1
This sound insulation system comprises a tube structure having one or more open ends, and a sound insulation structure having an opening or a radiation surface, and satisfies the following expression (1) when the phase difference of rera...  
WO/2018/229371A1
The invention relates to a combustion gas exhaust line (20) comprising an outlet branch (27) comprising a loudspeaker (30), a Y-shaped tubular part (29) connecting the loudspeaker (30) to the outlet branch (27), characterised in that the...  
WO/2018/226818A2
An internal combustion engine includes an engine block including a cylinder and a muffler assembly configured to receive exhaust gases from the cylinder. The muffler assembly includes a housing defining an interior volume and including a...  
WO/2018/226626A1
A multi-stage mixer includes a multi-stage mixer inlet, a multi-stage mixer outlet, a first flow device, and a second flow device. The multi-stage mixer inlet is configured to receive exhaust gas. The multi-stage mixer outlet is configur...  
WO/2018/206917A1
In a method of manufacturing a hollow shelled component for an exhaust system, opposed longitudinal edge regions of a blank (50) of thin-gauge sheet metal are folded out of the plane of the blank in the same direction to produce flanges....  
WO/2018/199778A2
The invention relates to an energy efficiency solution for internal combustion engines, and particularly to a thermo-acoustic solution for exhaust systems, which is based on a heat recovery system, an active noise-cancellation system and...  
WO/2018/199778A3
The invention relates to an energy efficiency solution for internal combustion engines, and particularly to a thermo-acoustic solution for exhaust systems, which is based on a heat recovery system, an active noise-cancellation system and...  
WO/2018/197741A1
The noise attenuator (1) for an exhaust system of an internal combustion engine (20) comprises a casing (2), an inner wall (3) defining a cylindrical space within the casing (2), an inner pipe (4) that is arranged coaxially with the inne...  
WO/2018/192891A1
The invention relates to an exhaust flap (11) for an exhaust system (4) of a motor vehicle (1) which has an internal combustion engine (3) and at least one electronic computing device (16) for regulating the internal combustion engine (3...  
WO/2018/185538A1
A muffler has a housing enclosing a plurality of chambers. A first flow path extends from an inlet to an outlet passing through a bypass chamber. A flow tube has a plurality of perforations being open to a chamber other than the bypass c...  
WO/2018/179037A1
An exhaust muffler comprising first and second pipes which penetrate through a casing or a partition wall partitioning the inside of the casing into a plurality of expansion chambers, and which are arranged with a downstream end of the f...  
WO/2018/182290A1
The present invention relates to a generator silencer and, more particularly, to a generator silencer capable of precipitating and discharging hazardous components of exhaust gas discharged from an emergency generator. A generator silenc...  
WO/2018/179036A1
Provided is an exhaust device for an internal combustion engine of a saddled vehicle, the exhaust device being disposed laterally outside a rear wheel so as to overlap the rear wheel in a side view and being configured such that exhaust ...  
WO/2018/180272A1
Provided is a saddle-type vehicle exhaust device comprising: an exhaust pipe 21; and a muffler 30 that is connected to the exhaust pipe 21. The muffler 30 includes: a muffler cylinder part 32; and a front cover 33 that closes a front ope...  
WO/2018/174174A1
The purpose of the present invention is to provide a sound-absorbing material that has an average sound absorption coefficient of at least 0.65 for frequencies within the range of 800–2000 Hz. This sound-absorbing material comprises a ...  
WO/2018/173388A1
Provided is an exhaust device for a vehicle in which the detection accuracy of an oxygen sensor can be maintained even when the outer shell of a muffler has a water-draining hole. In this exhaust device for a vehicle (1), which has a muf...  
WO/2018/174180A1
The present invention relates to a sound-absorbing material that comprises a fiber layer and that is characterized in that the fiber layer is at least 3 mm thick and has formed therein a plurality of holes that are not through holes and ...  
WO/2018/164699A1
The invention discloses systems and methods for enhancing the sound of vocal utterances of interest in an acoustically cluttered environment. The system generates canceling signals (sound suppression signals) for an ambient audio environ...  
WO/2018/161087A1
A firearm suppressor has a tube and a baffle stack carried within the tube. A first stack portion has a first inner volume defined by a first inner wall having a first diameter. A second stack portion has a second inner volume defined by...  
WO/2018/154031A1
This device (1) is provided for cleaning smoke removal equipment (2) having a globally planar free surface (2A) and through which smoke to be cleaned flows during the use of the smoke removal equipment. In order for this cleaning to be e...  
WO/2018/155072A1
Provided is an engine-powered working machine configured so as to enable a reduction in the temperature of exhaust gas when the exhaust gas is discharged to the outside from a muffler cover. A muffler 30 is mounted to the exhaust opening...  
WO/2018/144393A1
A multi-stage, torispherical drilled-hole dump device which mounts on the surface of an air cooled condenser (ACC) duct, and provides a compact and lightweight method for discharging steam into the duct by presenting a large surface area...  
WO/2018/140029A1
An aftertreatment component includes an inlet connector tube, an outlet connector tube, a chamber, a flow dissipater, and a substrate. The inlet connector tube receives exhaust gasses. The chamber is between the inlet connector tube and ...  
WO/2018/138691A1
The present invention relates to an exhaust emission system (100) for a two-wheeled vehicle (50). The exhaust emission system (100) comprises of an exhaust pipe (101) extending in a downward and rearward direction. The exhaust pipe (101)...  
WO/2018/114615A1
A motor vehicle exhaust line (10) comprising at least one perforated tube (12) having a plurality of cavities (14) and a sleeve (18) consisting of a metallic tubular lattice made of links, characterized in that the length of a link in th...  
WO/2018/118186A1
Systems for and methods of evacuating air from a muffler while it is being filled with a fibrous material are disclosed.  
WO/2018/105897A1
The present invention relates to an vertical take-off and landing method and apparatus of an automobile capable of vertically taking off and landing an automobile by using exhaust gas generated during an engine operation of an automobile...  
WO/2018/090124A1
A substantially metal-free exhaust subsystem includes an exterior housing formed of polymer; and a pipe formed of a layered fibers formed at least partially of glass, and bound by an inorganic binder. The fibers may be glass or ceramic, ...  
WO/2018/086971A1
An exhaust system (14) for a vehicle (10) having an engine (12) comprises: an exhaust pipe arrangement (38) defining a flow path for exhaust gas from a source of exhaust in the engine (12); and a sound transmission device (40) having at ...  
WO/2018/088231A1
The muffler 1 comprises: an expansion part 20 having a discharge port 22 and defining an expansion chamber 21 therein; an acoustic element having a finite-length guide tube 10 defining a guide chamber 11 therein; a connection part 30 pro...  
WO/2018/083650A1
A muffler (4) for motor vehicles comprising an intake pipe (8) of the exhaust gases that separates, at a fork (10), into a main pipe (12) and a secondary pipe (16), a muffler body (24) which delimits an expansion volume (28) and houses a...  
WO/2018/067321A1
Methods of and systems for filling a muffler body with a fibrous material prior to completing assembly of the muffler body are disclosed. The methods and systems prevent or otherwise reduce undesired migration of the fibrous material wit...  
WO/2018/061120A1
Provided is an exhaust device for a saddled vehicle, the exhaust device being configured such that, even if an exhaust pipe which has a catalyst containing pipe provided at the downstream end thereof is mounted at an angle of tilt relati...  
WO/2018/062256A1
This exhaust device (20) of an internal-combustion engine (2) is provided with a silencer (20A) having a double-tube structure, and an exhaust pipe (30). An inner tube (21) and an outer tube (22) are in contact with one another. The exha...  
WO/2018/056739A1
A silencer and a method for maintaining and repairing the silencer are provided. The silencer comprises: a hollow housing coupled to a noise generation portion; and a sound-absorbing device disposed inside the housing and extending in th...  
WO/2018/052261A1
The present invention relates to a vehicle exhaust improvement unit comprising: a conical tubular part, which is inserted into an exhaust pipe connected to a vehicle engine unit, has an external diameter gradually expanding from a front ...  
WO/2018/034891A1
A snap-action valve assembly for an exhaust system is provided that includes a first conduit and a second conduit that are joined to together to define an exhaust passageway. A valve flap is disposed within the exhaust passageway for con...  
WO/2018/033300A1
Sound attenuator (1) for a compressed-air system, in particular a pneumatic suspension system, for damping compressed-air discharge flows from the pneumatic compressed-air system proceeding from a pressure side (6) to an atmospheric side...  
WO/2018/035434A1
In one aspect, a system is provided and includes an engine including an exhaust valve, an exhaust manifold downstream of the exhaust valve and a muffler downstream of the exhaust manifold. The system also includes a catalyst positioned d...  
WO/2018/034888A1
A snap-action valve assembly for an exhaust system and a method for manufacturing the same is provided. The valve assembly includes a first conduit and a second conduit that is partially received in the first conduit. A valve flap is dis...  
WO/2018/029864A1
This muffler is provided with a housing, a separator, an exhaust introduction part, an exhaust discharge part, and a guidance part. The housing is formed so as to have a space therein. The separator partitions the space inside the housin...  

Matches 1 - 50 out of 14,833