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Patent Searching and Data


Matches 551 - 600 out of 14,722

Document Document Title
WO/2004/113690A1
The present invention relates to a converter device adapted to being arranged in an exhaust system of a combustion engine. The converter device comprises an outer casing (1), a tubular body (4) enclosed by said casing (1), and a passage ...  
WO/2004/111397A1
The invention relates to a method for attenuating the low-frequency noise generated at the outlet (18) of an exhaust line (14). According to said method: a signal representing the noise to be attenuated is defined; a first high-frequency...  
WO/2004/111520A1
Noise can be transmitted in solid, liquid and gas, but reflected at interface section between two different materials . Using said principle, a noise insulation component of the noise attenuation apparatus of the invention is made from a...  
WO2004075623A3
An exhaust muffler with a single-wall shell having a first end and a second end features a plurality of embossments formed on the shell and extending from the first end of the muffler to the second end of the muffler. The embossments are...  
WO/2004/106704A1
An exhaust regulating unit of n exhaust system for a car’s internal combustion engine includes a casing inserted into a damper pipe installed within a housing of a silencer and including a hollow tube, a guide unit including at least o...  
WO/2004/101960A2
A muffler for an internal combustion engine havinga housing (300) including an inlet opening (310) formed for a flow of exhaust gas into the housing, (300) an outlet opening (320) formed for a discharge of exhaust gas from the housing (3...  
WO/2004/099576A1
The invention relates to an exhaust silencer of muffler for an internal combustion engine, in particular a silencer with the damping characteristics of a resonator with the absorptive characteristics of a dissipative silencer. The silenc...  
WO/2004/097188A1
A high performance muffler, e.g., for an engine has a body (3) having an inlet opening on a side to which is connected an inlet pipe (2), an outlet opening at one end to which is connected an outlet pipe (4). The inlet pipe (2) directs f...  
WO/2004/094793A1
This invention discloses of a muffler and catalytic converter device, and in addition, a muffler, and a catalytic converter, wherein each type of device uses a porous metal that may function as the sound absorption material for the muffl...  
WO/2004/092589A1
Disclosed is silencer for a pneumatic device, which introduces compression air from the pneumatic device, reduces noise from the introduced compression air by using a sound absorption member installed within a cabinet, and exhausts the n...  
WO/2004/090295A1
Method and device pertaining to a particle filter (3) for an exhaust system for a combustion engine whereby the filter (3) is regenerated by spontaneous combustion of particles accumulated in the filter. Exhaust gases from the combustion...  
WO2003002852A3
A catalytic muffler (10) having a housing (12) with a first chamber (14) and a second chamber (16) fluidly communicating through a catalyst bed interspersed there between. A first baffle assembly (40) in the first chamber (14) extends be...  
WO/2004/083799A1
A conventional noise reducing device requires two filters and two resonance chambers, resulting in the device becoming large-sized and complicated. Therefore, there has been a problem that the device is difficult to incorporate into a ho...  
WO/2004/078581A2
Sound insulation for an engine contained within an outer casing (12, 17, 19), the insulation (26, 28, 30) made up from a minimal number of interlocking molded foam insulation pieces forming a substantially continuous shroud surrounding t...  
WO/2004/075623A2
An exhaust muffler with a single-wall shell having a first end and a second end features a plurality of embossments formed on the shell and extending from the first end of the muffler to the second end of the muffler. The embossments are...  
WO/2004/070174A1
Disclosed is a sound absorber for hot gas penetrating the sound absorber at a certain operating temperature lying within a predefined temperature range. Said sound absorber comprises a flow duct for the gas, which is delimited by interio...  
WO/2004/063540A1
The invention relates a unit for post-treating exhaust gases comprising a first face surface (4), a second face surface (5) and a honeycomb structure (2) extending therebetween. The inventive unit for post-treating exhaust gases is arran...  
WO/2004/059134A1
A muffler for a motor vehicle, provided in an exhaust gas passage of an internal combustion engine mounted on a motor vehicle. The muffler is downsized with its performance maintained and exhibits appropriate gas-exhausting characteristi...  
WO2004029561A3
The exhaust sound and emission control system is a system for reducing sound and noxious emissions from an automotive exhaust. The system may have an exhaust resonator (34) having one or more catalytic converter elements (24) in combinat...  
WO2004011783A3
Exhaust after-treatment system for the reduction of particulate, NOx, HC, CO, VOCs, nano-particle count and sulfur dioxide from diesel exhaust. System employs diesel oxidation catalyst (10), exhaust cooling system (70, 80), particulate c...  
WO2002064953A8
Silencer intended to be connected to a gas flow with pressure fluctuations such as for example downstream a combustion engine, the silencer comprising a housing (4) provided with an envelope surface (30) and two side surfaces (31, 32), a...  
WO/2004/044331A1
A device is provided for discharging two gases from a vehicle to ambient air, one gas having pressure pulsation of a first magnitude. The device includes an elongated body connected with the vehicle and having a first inlet connected wit...  
WO/2004/042203A2
A muffler (10) includes a tubular body (22) having an interior surface (28) extending between a first end (30) and an opposing second end (32), the interior surface (28) bounding a chamber. An exhaust cap (24) is disposed on the second e...  
WO/2004/036001A1
The invention relates to a method for producing a frequency spectrum in an internal combustion piston engine, wherein a throttle valve functioning as a flow modulator is displaced in an oscillating manner inside the exhaust pipe, such th...  
WO2004027231A3
The invention relates to a silencer comprising a silencer housing (1) and at least one inlet (3) and one outlet (4) for a waste gas. At least one functional surface (8) and at least one bead (5, 6, 7) are sunk into the housing surface (2...  
WO/2004/033866A1
The present invention relates to a converter device intended to be arranged in an exhaust system for a combustion engine. The converter device comprises an outer casing (1), a tubular body (4) which is enclosed by said casing (1), and a ...  
WO/2004/031545A1
A muffler (100, 200) includes an annular flow path (20) for the gas with the center of the annulus having a plurality of resonators which are in open communication with the downstream end of the annular flow path. The flow path (20) is a...  
WO2003056147A3
The invention concerns a silent diffuser for compressed gas expansion, comprising a tube (3) for intake of the gas to be expanded, an elongated sheath (1) containing a lining (6) made of a sound damping material, one end of said sheath c...  
WO/2004/029561A2
The exhaust sound and emission control system is a system for reducing sound and noxious emissions from an automotive exhaust. The system may have an exhaust resonator (34) having one or more catalytic converter elements (24) in combinat...  
WO2004007108A3
Hollow bodies for an air supply often prove unsatisfactory in terms of their sonic properties or their dirt accumulation behaviour. The invention relates to a sound-absorbing hollow body for an air supply, comprising a first external lay...  
WO/2004/027231A2
The invention relates to a silencer comprising a silencer housing (1) and at least one inlet (3) and one outlet (4) for a waste gas. At least one functional surface (8) and at least one bead (5, 6, 7) are sunk into the housing surface (2...  
WO2003103477A3
A sound attenuating system (2) is provided for pneumatically powered surgical instruments. In one aspect, the exhaust hose (70) is formed of at least two dissimilar materials to impede the transmission of vibrations or audible noise.  
WO/2004/022931A1
The invention relates to a device for reducing the vent noise generated at an exhaust (9) or intake (39) pipe which is connected to a pulsed flow source (2) such as a heat engine (2) or a reciprocating compressor. The invention is charac...  
WO/2004/022932A1
A muffler is disclosed . In the muffler a throttling device which is controlled by the energy of the airflow to be muffled is provided in a pipe line of the airflow which needs to be muffled. The muffler is adjusted by itself according t...  
WO2003056223A3
Disclosed is a sound absorbing device in a pipe duct (2), particularly a gas transporting port (2) of an internal combustion engine (1), comprising at least one bypass duct (5) running parallel to a main duct (6) in a sector of the pipe ...  
WO/2004/011783A2
Exhaust after-treatment system for the reduction of particulate, NOx, HC, CO, VOCs, nano-particle count and sulfur dioxide from diesel exhaust. System employs diesel oxidation catalyst (10), exhaust cooling system (70, 80), particulate c...  
WO/2004/007108A2
Hollow bodies for an air supply often prove unsatisfactory in terms of their sonic properties or their dirt accumulation behaviour. The invention relates to a sound-absorbing hollow body for an air supply, comprising a first external lay...  
WO/2003/103477A2
A sound attenuating system (2) is provided for pneumatically powered surgical instruments. In one aspect, the exhaust hose (70) is formed of at least two dissimilar materials to impede the transmission of vibrations or audible noise.  
WO/2003/102393A1
A diffuser apparatus (10) for facilitating a reduction in fluid pressure and suppression of noise. The apparatus comprises a tubular inner sleeve (12), a tubular muffler (26) and a tubular outer sleeve (20). The inner sleeve (12) defines...  
WO/2003/102917A1
A device for creating noise in a motor vehicle comprises a hollow body, which has an entry space (8) that, via an entry line (3), is connected to a gas-conducting part of an internal combustion engine (1) mounted in the motor vehicle, an...  
WO/2003/101780A1
The invention relates to a device for sonic configuration in a motor vehicle. Said device comprises a hollow body (6), which is divided into at least two chambers by at least one sonic transmission device (7). According to the invention,...  
WO/2003/087547A1
The invention relates to an exhaust chamber comprising an external envelope (10), defining a gas circulation passage and at least one continuous wall (16, 20, 22, 24) along which at least one cover piece (26A, 26B, 30, 32, 34) is arrange...  
WO2002095376A3
The device of modular construction permits the simultaneous or also non-simultaneous recording and characterisation of the solid and liquid particles and the gaseous components of the exhaust gases on various test supports, with only sma...  
WO2003058041A3
The invention concerns an exhaust silencer arrangement with integrated bypass assembly and external actuator to control the position of the bypass assembly and external actuator to control the position of the bypass assembly. For applica...  
WO2003007682A3
An emission control device (10) and method are provided for treating exhaust to reduce pollutants contained therein. The device (10) includes a first chamber (16) through which the exhaust passes. First and second grids (26 & 30 respecti...  
WO/2003/071103A1
An internal combustion engine silencer, which is intended to achieve a great silencing effect without decreasing the silencing effect in the high rotation region for the engine, comprises a one or more expansion chambers (11-13) formed w...  
WO/2003/071104A1
The invention concerns an internal combustion engine exhaust line comprising an active noise reduction system (6) with variable choke device, continuously regulated based on the instantaneous discharge rate pulses of exhaust gases exitin...  
WO2001083957A9
A silencer (143) is disclosed that reduces the acoustic energy of a fluid mixture (111) of a liquid coolant (109) and of exhaust gas (107) from an engine. The engine may be a marine engine. The silencer (143) according to this aspect inc...  
WO/2003/058041A2
The invention concerns an exhaust silencer arrangement with integrated bypass assembly and external actuator to control the position of the bypass assembly and external actuator to control the position of the bypass assembly. For applica...  
WO/2003/056149A1
Exemplary methods, devices and/or system for reducing noise produced by a turbine (126), such as, a turbocharger turbine. An exemplary exhaust conduit employs material to absorb exhaust-borne noise and/or structure-borne noise. Another e...  

Matches 551 - 600 out of 14,722