310results about "Air cleaner and silencer combination" patented technology

A filter assembly for removing particulate contaminants and chemical contaminants from an incoming dirty air stream for a fuel cell. The filter assembly also includes a noise suppression element that reduces sound waves or noise emanating from any equipment, such as a compressor. The filter assembly can include a particulate filter portion for removing physical or particulate contaminants, a chemical filter portion for removing chemical contaminants, or can have both portions.

An object of the present invention is to provide a duct having a simple structure and capable of suppressing occurrences of an intake noise and a dropping-out of an adsorbent, and to a process for producing the same capable of producing easily. The present duct (1) is one comprising a duct body (2) in tubular, and the duct body (2) is comprised of a nonwoven fabric in which an adsorbent (3) in at least one type among granular, powdery and fibrous is disposed as an intermediate layer. The duct body (2) is preferably composed of a first fiber layer (7) located on an inner circumferential side, a second fiber layer (8) located on an outer circumferential side, and the adsorbent (10) is disposed between the first fiber layer (7) and the second fiber layer (8).

A resonator is arranged in an intake system including a pipe section for partitioning an intake port from an intake passage that communicates the intake port with a combustion chamber of an engine, the resonator including: a branch pipe having one end branching to the pipe section and the other end closed so that a silencing chamber is defined therein; and at least one partition wall for partitioning the silencing chamber into at least one pneumatic spring chamber, the partition wall having a natural frequency lower than the frequency of silencing target sound of intake noise propagated from the intake passage.

The present invention relates to a vehicle's air intake device. In an embodiment, the intake device comprises an intake pipe, an air cleaner case in fluid communication with the intake pipe, a connection pipe in fluid communication with the air cleaner case, a carburetor attached to the connection pipe, and a plurality of resonators. In an embodiment, the intake device comprises an intake pipe, an air cleaner case in fluid communication with the intake pipe, a connection pipe in fluid communication with the air cleaner case, a carburetor attached to the connection pipe, and means for reducing intake sound levels.

A resonator 13 is provided including a resonating body 13 which is vibrated by intake air pulsation in an intake system 5, a volume chamber 14 connected through the resonating body 13 to the intake system 5, and a neck section 16 through which an interior space 15 of the volume chamber 14 is communicated with outside. The interior space 15 of the volume chamber 14 and interior of the intake system 5 are partitioned by the resonating body 13. The resonator is so set that a sound pressure in a certain frequency range is released from the neck section 16 to the outside under vibration of the resonating body 13. With this, the sound pressure characteristics of air intake sound can follow a rise in engine speed.

Disclosed herein is an air duct assembly for vehicles which reduces noise generated by the flow of intake air which flows along a path of the air duct provided in a vehicle and is fed to an engine. The air duct reduces the noise of a low frequency range in initial engine start operation, and in addition, the noise of a whole frequency range, thus allowing a vehicle to be traveled while providing the environment having minimum noise to a driver and passenger riding in the vehicle. Therefore, it is not necessary to install an additional resonator.

An intake combustion resonator including an enclosure which includes a resonator tube assembly passing through the enclosure. The resonator tube is formed from porous, undulated tube material and has openings formed in the tube walls. The openings serve as “tuned” passages through the porous tube walls. The resonator tube assembly is not centrally located within the enclosure but rather it is offset both in a height and a width orientation. The size, spacing, and orientation of the tube openings, porous, undulated sleeve material, the design of the enclosure, and the placement of the tube within the enclosure, all act in concert to give rise to the noise abatement properties of the present invention.

An integrated mass air flow sensor / broadband silencer assembly comprises a molded body having a plurality of walls formed therein. The molded body is over-wrapped with a layer of acoustic foam that, together with the plurality of walls, define a plurality of chambers within an interior volume of the assembly. A mass air flow sensor can be inserted into one of the chambers. The chambers are sized and spaced to provide a uniform velocity, low turbulence air flow to the sensor, and a minimally-restricted air flow to an internal combustion engine located downstream of the assembly.

An air intake apparatus includes an air intake duct provided with an inlet through which intake air should be introduced, an air cleaner disposed on the downstream side of the air intake duct and for filtering the intake air, and an air cleaner hose disposed on the downstream side of the air cleaner and for supplying the filtered intake air to a combustion chamber of an engine, wherein an intake air passageway is laid out between the inlet and the combustion chamber. In a passageway wall surrounding an antinode of a lower resonance mode corresponding to the whole passageway length of the intake air passageway, a valve for opening a communicating path allowing the inside of the intake air passageway to communicate with the outside thereof at least when the lower resonance mode occurs, and an air-permeable member disposed to block the communicating path are disposed.

An air induction system with active noise control includes a self-cleaning air filter that is integrated within an air intake housing. The self-cleaning air filter filters out contaminants such as dust and dirt particulates from air flowing through the intake housing. The self-cleaning filter is powered and controlled by the same electronic unit that is used to power the active noise control system.

An integrated air intake system may include an integrated body formed by combining a cylinder head cover at the top of an engine with an air cleaner body at a side of the cylinder head cover, an air duct connected to a side of the air cleaner body to make a channel for air sucked from the outside into the air cleaner body, an upper cover combined in contact with the air cleaner body at the top thereof, an intake hose connected to a side of the upper cover to supply purified air to an engine intake port, and an intake filter disposed in a space formed in the air cleaner body and the upper cover to purify the air sucked from the outside.

An air cleaner assembly and a filter element reduce wall noise by rigidly coupling the movement of opposing air cleaner housing sidewalls through the installed filter element. The sidewalls are rigidly coupled through the filter element with the sidewalls coupled to move together in unison such that wall deflection forces created by the pressure pulsations tend to cancel each resulting in improved dynamic stiffening of the air cleaner walls and reduced wall noise.

To provide an intake system of a motorcycle, which is capable of attenuating intake noise efficiently, and facilitating arrangement of resonators. An air cleaner includes an air cleaner case having an element and an expansion chamber with an intake passage connected thereto. Intake ducts introduce outside air into the air cleaner case. Resonators are provided on the expansion chamber and intake ducts, respectively.

A fuel delivery system for a motorcycle including an engine having at least one combustion chamber. The fuel delivery system includes a fuel injector configured to deliver a fuel charge to an intake passage of the engine. The motorcycle further includes an air box defining an interior space, or plenum chamber. An inlet duct defines at least a portion of the intake passage and further defines an axis. The inlet duct also defines an opening to the intake passage disposed within the plenum chamber. A spray axis of the fuel injector is oriented parallel to the axis of the inlet duct and the fuel injector is supported by the air box.

A filter silencer is disclosed. In a particular embodiment, the silencer includes a housing, a silencer chamber disposed inside the housing, and a filter chamber disposed between a sidewall of the housing and the silencer chamber. An intake port is in communication with the filter chamber and ambient air. The filter chamber also includes a filter chamber outlet that is in communication with a compressor or air blower, for example. A silencer chamber inlet is in communication with an exhaust of the compressor or air blower, where an air flow is forced through the silencer and out a discharge port. The discharge port and the intake port are at opposing ends of the silencer. In addition, the silencer includes at least one baffle secured within the silencer chamber, where the baffle is configured to generate a non-directional interference with the air flow to assist in silencing the discharge.

The invention relates to a resonant system. The invention relates to a device for a gas inlet system, wherein the device comprises a shell and a plugged connection part; the shell is provided with a structure the interior of which is a cavity; an opening is arranged at a first end part of the shell; the plugged connection part can be inserted into the cavity of the shell through the opening in a shape matched manner; the shell is provided with a first gas guide pipe; the plugged connection part comprises a second gas guide pipe; the second gas guide pipe is provided with the first end part and a second end part; a first lateral plate is close to a first end part of the second gas guide pipe; and the opening can be hermetically covered by the first lateral plate; furthermore, the first gas guide pipe or a gas guide hole and the second gas guide pipe commonly form a gas inlet pipeline through which gas can flow in or out. The resonant system disclosed by the invention has the advantages of being convenient for processing and simple for assembly.

The invention discloses an automobile noise reduction system with one-fourth wavelength pipes combined with a Helmholtz silencer, and belongs to the technical field of environment control and improvement in order to solve the problems that an existing automobile noise reduction system is high in manufacturing cost, poor in noise elimination effect, high in air inlet resistance and consumed power, poor in fuel economy and not suitable for various automobiles. The Helmholtz silencer is communicated with the side wall of a front air inlet guide pipe, the front air inlet guide pipe is communicated with an air filter, an air filtering net is arranged in the air filter, the air filter is communicated with a first rear air inlet guide pipe, the first rear air inlet guide pipe is communicated with a second rear air inlet guide pipe through a flexible connecting pipe, an air throttling valve is arranged on the second rear air inlet guide pipe, the second rear air inlet guide pipe is communicated with an air inlet header pipe, the air inlet header pipe is communicated with an air inlet manifold, and one ends of the two one fourth wavelength pipes are both connected and communicated with the side wall of the first rear air inlet guide pipe. According to the system, while power property and economy of an automobile are maintained, the noise of the whole automobile can be lowered particularly, the environment quality can be improved, and the system is suitable for various automobiles.

An air intake duct, of a saddle-riding type vehicle, in which a flow velocity of an intake air is less likely to be reduced to enable prevention of reduction of an efficiency of a supercharger, is provided. The air intake duct of a motorcycle serves to supply incoming wind as the intake air to the supercharger for a combustion engine. The air intake duct has a passage area that is gradually reduced from an air intake port at a front portion toward a downstream portion connected to the supercharger at a rear portion.

An air induction system for a vehicle engine includes a sensor assembly for monitoring particulate concentration. The sensor assembly is mounted within an air intake housing, which has an inlet and an outlet. An airflow passageway extends between the inlet and the outlet to the vehicle engine. An air filter is mounted within the housing to filter particulates from air flowing through the airflow passageway. The sensor assembly can be mounted to an intake manifold or incorporated into a mass airflow sensor. The particulate sensor generates a particulate signal representative of particulate concentration entering the vehicle engine via the outlet. The signal is sent to an output device monitored by a vehicle operator.

An active intake muffler for an air intake duct of an internal combustion engine includes a control unit, a sensor assembly operatively connected to the control unit, and a diaphragm constructed to be resistant to heat and moisture. The diaphragm is acoustically coupled with a flow of intake air in the air intake duct and has a surface which confronts the flow of intake air. A transducer is operated by the control unit for causing the surface of the diaphragm to vibrate in a bending vibration mode to thereby produce a structure-bone sound in dependence on noise caused by the intake of air.