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WO/2011/036700A1 |
An exhaust pipe part and an exhaust device for an internal combustion engine, enabling elimination of a conventionally used muffler, a reduction in the size of a noise eliminator provided to one end of an exhaust pipe, and a reduction in...
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WO/2011/030458A1 |
An exhaust muffler disposed close to the cylinder of a multipurpose engine. An exhaust muffler (M) for a multipurpose engine, comprising: a muffler body (15) connected to the cylinder (3) of the multipurpose engine (E) through an exhaust...
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WO/2011/031555A2 |
According to one embodiment, an exhaust gas after-treatment apparatus includes an exhaust tube (104) defining an exhaust flow channel through which a main exhaust gas stream is flowable. The apparatus also includes an exhaust flow segreg...
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WO/2011/024231A1 |
An exhaust device for an internal combustion engine eliminates the need for mounting a sub-muffler to a tail pipe and the need for mounting to an upstream opening end of the tail pipe a muffler equipped with a resonance chamber having a ...
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WO/2011/024234A1 |
An exhaust device for an internal combustion engine eliminates the need for mounting a sub-muffler to a tail pipe and the need for mounting to an upstream opening end of the tail pipe a muffler equipped with a resonance chamber having a ...
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WO/2011/017390A1 |
A method of forming a preform product includes filling a mold cavity with glass fibers. The mold cavity has an inlet end, a second end opposite the inlet end, and a longitudinal axis. Suction is applied simultaneously to the mold cavity ...
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WO/2011/011260A1 |
An engine includes an exhaust conduit (150) having an exhaust port on an end of the exhaust conduit. The exhaust conduit has an angled inside surface that has a cross section that widens toward the exhaust port. The engine further includ...
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WO/2010/135095A2 |
Snap action valve assemblies for use in conduits of automotive exhaust systems have their operation controlled by use of inertia damper elements coupled to an axle of a rotatable valve plate of the valve assembly.
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WO/2010/128184A1 |
The novel feature of the engine exhaust is that the exhaust (4) pipe (6) comprises at least two telescopic sections (5) with corresponding peripheral acoustic cavities (7), making it possible to vary the length of the pipe (6) and achiev...
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WO/2010/128570A1 |
Provided is an exhaust gas purifying device wherein, first, a strength such as a mechanical strength or a heat-resistant strength is excellent; second, the cost such as a material cost or a production cost is excellent; third, the exhaus...
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WO2010110025A1 |
Provided is a spiral tail for an energy-saving exhaust muffler, wherein a pulsation wave is prevented from occurring when an exhaust is discharged to the atmosphere through the outlet of an exhaust muffler, to increase the output of an e...
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WO/2010/103813A1 |
Provided is a multilayered tube by which a heat insulation effect and a vibration suppression effect can be obtained, and the structure of an exhaust system using the multilayered tube can be further compacted to a conventional exhaust s...
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WO/2010/097014A1 |
A noise elimination method based on sound ray refraction theory and the muffler thereby are disclosed. The method uses low temperature refrigeration system (2) to form a temperature gradient inside and outside the chamber of the muffler,...
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WO/2010/091656A2 |
The invention relates to a muffler for a turbo or piston engine, in particular a screw compressor, comprising a housing (1.1-1.3), a disc arrangement having at least one disc (3, 4, 5) attached to the housing, a pipe arrangement having a...
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WO/2010/089283A1 |
The invention relates to a sound absorber (1) comprising at least one gas channel (11) through which gas flows, wherein at least one helical fixture (4) is provided in the gas channel, wherein the helical fixture gives an inner area (10)...
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WO/2010/087902A2 |
A passive valve assembly for a vehicle exhaust system includes an exhaust component that defines an exhaust gas flow path and a vane that is positioned within the exhaust gas flow path. The vane is positioned at an initial start position...
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WO/2010/086719A1 |
An apparatus comprising includes a conduit portion having a conduit inner surface and a conduit outer surface, and a plurality of chambers in fluid communication with the conduit portion. The chambers include a first chamber defined, at ...
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WO/2010/085695A1 |
A device or system through which fluid is adapted to flow, such as, for example, a fluid- carrying conduit, flow control valve, or fluid expansion device including, for example, a steam turbine or fluid expander, according to which acous...
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WO/2010/085698A1 |
A device or system through which fluid is adapted to flow, such as, for example, a fluid- carrying conduit, flow control valve, or fluid expansion device including, for example, a steam turbine or fluid expander, according to which acous...
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WO/2010/081148A2 |
A system, apparatus, and method for improving performance of a pressurized system.
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WO/2010/064256A1 |
The present invention relates to an Automotive Exhaust System, herein after referred to as Switchable High Performance Exhaust system, having exhaust header tubes (2) attached to the exhaust ports of a multi-cylinder engine at one end an...
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WO/2010/065637A1 |
The present disclosure relates to an diesel exhaust treatment device including a main body having a central longitudinal axis that extends between first and second ends of the main body. A catalyzed substrate is positioned within an inte...
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WO/2010/048794A1 |
A vehicle muffler with reducing exhaust gas includes a casing. An air inlet pipe (6) is set on the front end of the casing (4) and an air exhaust pipe (7) is set on the rear end of the casing (5). Several levels of partition boards of th...
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WO/2010/031177A1 |
Open chamber exhaust mufflers and related methods of manufacture and use are disclosed. One embodiment of an exhaust muffler has a chamber body, absorbing material that at least dampens sound, and a retainer that retains the absorbing ma...
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WO/2010/026864A1 |
Positioning pins (40) are respectively provided to front and rear flange sections (34B, 34C) of a tube body (33) for a filter. A cutout groove (24) is provided in a flange section (23C) of an upstream tube body (22), and a cutout groove...
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WO/2010/018069A1 |
In a method for adjusting a Helmholtz resonator (10) which comprises at least one resonator volume (11) which is connected to a space (13) to be damped, along an axis (19) via a constriction (12) having an acoustic resistance, the acoust...
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WO/2010/013499A1 |
A method of reducing jet noise for intermittently jetting airflow toward a jet flow to be reduced in noise, and a jet nozzle for jetting airflow are provided. The projected area of the jet nozzle in the direction along the jet flow is sm...
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WO/2010/004476A1 |
The present invention relates to an improvement muffler that includes an improved inlet configuration having first and second sequential chambers with a perforated central pipe passing longitudinally through a central region of both cham...
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WO/2010/005186A2 |
The present invention concerns a rotary muffler for an internal combustion engine and an internal combustion engine comprising the same. Since an engine noise-reflective and air-blowing fan is installed in the engine room, the engine noi...
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WO/2010/001777A1 |
A two-wheeled motor vehicle (10) provided with a throttle grip (25) rotated by the driver to change the degree of opening of a throttle valve (31), and also with an exhaust valve (34) which, when a throttle ratio which is a ratio of the ...
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WO/2009/151138A1 |
Disclosed is a multi-cylinder engine capable of reducing the pressure and temperature of the exhaust gas to less than what is conventional. Engine (1) is equipped with a cylinder (#A), a cylinder (#B), and an exhaust passage (16). Exhaus...
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WO/2009/151135A1 |
Disclosed is a new engine that employs a means to increase the exhaust gas flow rate. An engine (1) is equipped with a bifurcation (21), which splits a shock wave (35) propagated at a higher speed than an exhaust gas (36) and guides the ...
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WO/2009/151137A1 |
Disclosed is an engine capable of suppressing an increase in the temperature of the exhaust gas, reducing deterioration of the catalyst, and increasing the cleaning efficiency. Engine (1) has a convergent part (32), a divergent part (33)...
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WO/2009/151136A1 |
Disclosed is an engine that can efficiently supply air to the exhaust passage, even under high-load conditions. An engine (1) possesses a convergence (32), a divergence (33), and a bifurcation (21). The bifurcation (21) splits a shock wa...
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WO/2009/143634A2 |
An exhaust duel has a venturi into which exhaust gases from an internal combustion engine flow. and an inner chamber having an Ď…outer frusto-conical shaped wall. The wall increases in cross- section downstream and terminates at a nozzle...
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WO/2009/136556A1 |
A packaged engine constructed by containing an engine (10) in a package (2). An air cleaner (22) and an intake silencer (23), which are engine intake devices, are arranged in an intake chamber (8A) which is a chamber different from a cha...
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WO/2009/133613A1 |
A mat material that even when disposed in high-temperature conditions in the use in automobile muffler, etc., can be free from breakage due to wind erosion and thermal deterioration and excels in handleability. The mat material has the f...
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WO/2009/113107A1 |
The subject matter described herein relates to a variable sound exhaust system for a vehicle. The exhaust system (100) includes an exhaust pipe (102) and a muffler (106) having a plurality of expansion chambers (110) and a plurality of p...
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WO/2009/110060A1 |
A sound-deadening structure of vent tube and sound-deadening structure of case that realize not only deadening of sound in a wide frequency region but also prevention of any deterioration of ventilation resistance in the vent tube and ca...
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WO/2009/110843A1 |
The present invention relates to a baffle for use in a silencer intended for ventilation ducts and to a sound damping arrangement of baffles. The baffle (2) according to the invention is of rectangular shape as viewed both from the side ...
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WO/2009/111096A1 |
A passive, exhaust pressure actuated valve assembly for placement inside a tubular exhaust conduit is pivotally mounted to an off-center axle for rotation between fully closed and fully opened positions. A bias element forces the valve f...
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WO/2009/106123A1 |
In the present silencer (20) for valve equipment for blow-moulding machines, arranged at the outlet of a venting valve of the valve equipment, for venting the compressed air from a blowing volume (17), there is a first tubular hollow bod...
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WO/2009/107375A1 |
Three exhaust pipe units (20, 40, 60) are arranged in a row in a back pressure regulator (15) of an exhaust device. In each of the exhaust pipe units (20, 40, 60), the base end of inner exhaust pipe (22, ...) is inserted into an outer ex...
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WO/2009/107376A1 |
A sound absorber (10) is provided with an outer cylinder (20) and an inner pipe (30). The inner pipe (30) is provided in the internal space of the outer cylinder (20). A space between the outer cylinder (20) and the inner pipe (30) is fi...
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WO/2009/103561A1 |
The invention relates to an exhaust gas control system (1) and an exhaust gas control method. Said exhaust gas control system (1) comprises an exhaust gas throttle valve (4) in an exhaust gas channel (5) and an actuation device (6) of sa...
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WO/2009/099986A2 |
Mufflers having polymeric bodies (1) that are protected from being overheated from the exhaust pipe (2) by having an air gap between the exhaust pipe and the polymeric body are disclosed. Also disclosed is a process for making muffler sy...
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WO/2009/099399A1 |
This invented muffler includes a high-voltage and high-speed direct-current motor (1.1) supplied from the vehicle battery and fixed externally on the specially manufactured exhaust pipe (3) of the engine; a drive system resistant to high...
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WO/2009/096336A1 |
A muffler for connection to the exhaust system of an internal combustion engine has a guide section (42) for guiding suction of water contained at the bottom of the muffler into an outlet pipe (30). The guide section (42) is provided to ...
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WO/2009/087270A1 |
An exhaust silencer of a combustion engine, comprising a housing (1) that is to be connected to an exhaust pipe, through which housing the exhaust gases are ar- ranged to be conducted and which comprises a reactive part (2) and an absorb...
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WO/2009/086619A1 |
A muffler for mounting to a handheld pneumatic tool, such as a die grinder. The muffler comprises a hollow open-ended casing having an inner wall lined with a thick layer of an insulating material. The muffler is sleeve mounted about a c...
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