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JP3237406U |
To provide a muffler cutter having a high appearance beauty. A muffler cutter 1 is configured to have a cylinder portion 2, an attachment portion 3 used for attaching to an exhaust pipe E, and a drainage portion 4 for draining water accu...
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JP7064236B2 |
To provide a resonance type sound absorption panel which improves sound absorption performance with a simple shape change as much as possible, does not remarkably increase weight due to the shape change and can be easily applied to an ex...
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JP7061221B1 |
To provide an exhaust pipe and an automobile muffler capable of obtaining high sound deadening performance with a relatively simple structure. An exhaust pipe 100 or an automobile muffler 1 of the present invention includes a concave por...
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JP7061020B2 |
To provide an exhaust device of a saddle riding type vehicle that allows heat and sound to be hardly transmitted from an inner case to an outer case.A muffler 35 comprises an inner case 46 inside which an expansion chamber EC is formed, ...
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JP7059570B2 |
A vehicle exhaust device includes a muffler body that has an interior space divided into a plurality of expansion chambers by a partition wall, and an exhaust control valve that switches an exhaust passage in the muffler body. The exhaus...
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JP7059876B2 |
To open and close a discharge hole of a muffler with a simple configuration.A muffler 10 has a discharge hole 16 to discharge condensate water therethrough on a rear wall 12 thereof. An opening-closing lid 30 which rotates around a suppo...
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JP7056490B2 |
A muffler for a vehicle includes a first expansion chamber in which an exhaust gas flowing in from an inlet pipe is expanded, and a bracket that is placed on an inner surface of the first expansion chamber to oppose a blow-off port of th...
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JP7051630B2 |
To provide a discharge structure which can inhibit noise caused by exhaust gas sent from a prime mover.A discharge structure according to an embodiment discharges exhaust gas sent from a prime mover through a duct to the atmospheric air....
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JP2022053606A |
To provide an exhaust pipe that produces higher sound or eliminates low sound to make high sound stand out.An exhaust pipe comprises a main pipe 1 that leads out exhaust gas of an engine to the outside, and an annular return pipe 2. The ...
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JP2022054383A |
To provide a muffling device which has a large transmission loss, facilitates molding and adjustment in correspondence with a frequency, and has a wide range of frequencies in which muffling effect can be obtained.A muffling device 1 ins...
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JP7045114B1 |
[Task] Provided are silencer devices that reduce noise and pressure loss generated at air outlets and outlets of pneumatic drives such as air cylinders, high pressure valves and diaphragm pumps. A porous metal body of open cells with a p...
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JP7031242B2 |
To provide a vehicle exhaust structure which can be disposed while achieving space saving and enables easier activation of a catalyst in a purifier.A vehicle exhaust structure includes: a pair of side frames extending in a vehicle fore a...
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JP7032108B2 |
To provide an exhaust device for an internal combustion engine capable of achieving noise reduction effect up to a high frequency band while suppressing increase in the size.An exhaust device 100 for an internal combustion engine E inclu...
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JP7030660B2 |
The present invention relates to a combustion engine system comprising an internal combustion engine generating an exhaust gas comprising soot, a turbocharger driven by the exhaust gas, and a NOx reduction unit arranged upstream of the t...
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JP7026544B2 |
To provide a noise-reducing device capable of reducing noises transmitting in pipes, such as an exhaust air duct, while using a construction in which power need not be supplied.A noise-reducing cylindrical body 10 has a plurality of fine...
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JP6991595B2 |
To provide an exhaust promotion apparatus that reduces air pollution with increase of fuel consumption of a vehicle and saves fuel cost to the price increase, rectifies the turbulence and the vortex flow generated in the bottom of a vehi...
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JP2022017897A |
To provide a silencer which can prevent a crack of a flank plate, and can secure safety at the traveling of a railway vehicle, and a railway vehicle having such a silencer.A silencer 4 connected to an exhaust system of a diesel engine co...
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JP7006353B2 |
To provide a vehicular body structure capable of efficiently installing, on a vehicular body, an exhaust pipe that includes an exhaust emission control device.According to this vehicular body structure, an exhaust pipe 30 is extended bac...
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JP7006030B2 |
An air exhausting device includes an inlet pipe that couples an exhaust pipe of an engine to a muffler, an outlet pipe that is a path to discharge an exhaust gas inside the muffler to outside air, and the muffler divided into a plurality...
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JP7005866B2 |
To provide an exhaust noise reduction device capable of reducing an exhaust sound to occur in the exhaust port of a muffler and easy in maintenance.An exhaust noise reduction device 20 comprises an exhaust noise reducing unit (or a silen...
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JP2022509209A |
To form a housing containing an inlet, a first outlet, and a second outlet, a first conduit connecting the inlet to the first outlet, and / or a second conduit from the inlet to the second outlet. A gas flow and sound control valve for t...
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JP7002708B2 |
Method and system for filling a muffler with fibrous material. The muffler includes a muffler shell comprising a first shell member and a second shell member, at least one partition extending between the first and second shell members, a...
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JP7001893B2 |
Systems for and methods of evacuating air from a muffler while it is being filled with a fibrous material are disclosed.
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JP6997596B2 |
To improve soundproofing performance of a soundproofing wall constituted by wall members overlapping with a hollow portion therebetween.A resonance state of an outer wall member of a soundproofing wall which includes an inner wall member...
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JP6992216B2 |
To create a new type mixing device for an exhaust gas aftertreatment system allowing for exhaust gas aftertreatment of low noise, an exhaust gas aftertreatment system, and an internal combustion engine.The mixing device for an SCR exhaus...
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JP6991482B2 |
To suppress deterioration in sound absorption effect of a sound absorptive material, and at the same time suppress the sound absorptive material from deviating from a desired position in assembling a heat insulator.An assembly device 1 o...
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JP6987917B2 |
An exhaust muffler has an outer cylinder into which an exhaust gas from an engine is introduced and a muffling member made of a foamed ceramic material. The outer cylinder has an inner cylinder through which the exhaust gas passes, a par...
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JP2022500594A |
An assembly of an exhaust duct for transporting exhaust gas generated from a combustion region to the atmosphere is disclosed. This assembly includes an exhaust gas exhaust port for exhausting exhaust gas to the atmosphere and an exhaust...
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JP6981848B2 |
An exhaust silencer device which is interposed in an exhaust passage in a vehicle to reduce exhaust noise comprises a sub-muffler which is interposed in the exhaust passage and has an expansion chamber formed therein; an inlet pipe which...
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JP2021188606A |
To provide an exhaust system enabling early activation of a catalyst and improvement of purification performance.An exhaust system 38 for purifying exhaust gas G of an engine E includes one catalyst body 46 and the other catalyst body 48...
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JP6978190B2 |
A component of an exhaust system for a combustion engine has a wall in which at least one opening is provided, and a perforated cover which is associated with the opening. A support is provided by which the perforated cover is mounted to...
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JP3234804U |
To provide a muffler whose sound and performance can be changed. A muffler 100 reduces the noise of exhaust gas sent from an engine, and includes a pipe 110 through which the exhaust gas passes, a case 120 for accommodating the pipe 110,...
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JP2021173240A |
To propose a silencer capable of suppressing generation of radiation sound.A cross-sectional shape having an outer shell 2 and orthogonal to an axial direction in which a silencer 1 extends in the outer shell 2 is composed of a pair of f...
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JP2021161950A |
To provide a V-shaped engine having a simpler configuration and further having reduced vibration.A V-shaped engine comprises: an engine body with a pair of left and right banks; an exhaust duct that has a first duct that extends by intro...
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JP6942621B2 |
A mixing apparatus for mixing a precursor substance of a reducing agent with exhaust gas, having a housing that provides a mixing chamber and a silencer. The housing inlet side has an inlet connection for exhaust gas and an outlet side h...
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JP6936156B2 |
To provide a muffler which improves an effect for reducing a resonance sound produced at the muffler, and can reduce a radiation sound produced by the vibration of a casing of the muffler.A muffler comprises a casing and a sound-deadenin...
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JP6936597B2 |
To provide a sound absorber suitable for being used for automobiles, maintaining sound absorbency even under high temperature and having average sound absorption coefficient at frequency region of 800 to 2000 Hz of 0.6 or more.There is p...
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JP6936262B2 |
Provided is a muffler that can reduce sound pressure of a standing wave in an outlet pipe and, at the same time, can inhibit generation of flow noise. In one aspect of the present disclosure, the muffler includes a housing, an outlet pip...
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JP2021131085A |
To suitably suppress the sound radiation of a muffler.A muffler includes a shell member 20 forming an internal space 10, and an inlet pipe 40, the inlet pipe 40 being a pipe shaped member protruded from the entrance of the shell member 2...
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JP6925415B2 |
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...
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JP6916771B2 |
To improve functionality in an exhaust unit in which catalysts are disposed within a housing.One embodiment of the disclosure is an exhaust unit 1 and includes a housing 10, a wall member 17, and catalysts 21, 22. The housing 10 is confi...
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JP2021116702A |
To provide a silencer capable of suppressing noise generated from an apparatus with an exhaust flow path.A silencer 10 that suppresses noise caused by exhaust gas discharged from an apparatus with an exhaust flow path 5, has a sound abso...
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JP2021116758A |
To provide a technique for increasing a mounting space for a vehicular battery in a vehicle where an exhaust system is arranged around the vehicular battery.The exhaust system to form an exhaust flow path for exhaust gas exhausted from a...
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JP2021116732A |
To provide a muffler that can efficiently reduce exhaust noise.A muffler includes: an exhaust passage through which an exhaust gas passes; and an expansion type muffler. The expansion type muffler is installed to the exhaust passage. The...
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JP6913412B1 |
To enable stable joining of a plurality of members forming an outer shell even when the shape accuracy of the joint portion is low. An outer shell 40 is formed by joining an edge portion 21 of a first member 20 and an edge portion 31 of ...
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JP6905165B2 |
To provide a valve device that can secure a valve opening characteristic which is non-linear with respect to a flow rate of exhaust gas in a muffler and can surely prevent chattering to secure a sound reduction at low to medium rotation ...
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JP6905637B2 |
An exhaust muffler (24) comprises: an exhaust pipe (31) that forms a flow path for exhaust gas and that includes communication-holes (45) that penetrate the pipe wall; a gas sensor (33) that is attached to the exhaust pipe (31) and that ...
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JP6881334B2 |
An exhaust gas purification device includes a pre-oxidation catalyst disposed in an exhaust gas passage disposed right next to an engine mounted in a vehicle body and a muffler that is provided in such a manner as to surround the pre-oxi...
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JP2021080886A |
To provide an exhaust system which stably supplies an engine oil while securing a muffler chamber having a sufficient volumetric capacity below an engine.An exhaust system (30) includes: an exhaust pipe (31) which enables exhaust gas exh...
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JP6871285B2 |
Provided is a tail pipe in which a silencing effect at a discharge port is obtained. One aspect of the present disclosure is a tail pipe including: an inner tube including a discharge port configured such that an exhaust gas is discharge...
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