Noise attenuation unit for engine systems
AssigneeDayco IP Holdings, LLC
InventorsKeith Hampton, David Fletcher, Brian M. Graichen, Rex Bravo
Life of this patent
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Abstract
Noise attenuation units are disclosed that are connectable in a system as part of a fluid flow path. Such units include a housing defining an internal cavity and having a first port and a second port each connectable to a fluid flow path and in fluid communication with one another through the internal cavity, and a noise attenuating member seated in the internal cavity of the housing within the flow of the fluid communication between the first port and the second port. The noise attenuating member enables the fluid communication between the first port and the second port to flow through the noise attenuating member.
Claims20
A noise attenuation unit connectable to become part of a fluid flow path comprising:
- a housing defining an internal cavity and having a first port and a second port each connectable to a fluid flow path and in fluid communication with one another through the internal cavity;
- and
- a noise attenuating member, comprising a porous material, seated in the internal cavity of the housing within the flow of the fluid communication between the first port and the second port;
- wherein the fluid communication between the first port and the second port includes fluid flow through the noise attenuating member and a secondary fluid flow path around one or more outer sides of the noise attenuating member, wherein at least a portion of the fluid flow through the noise attenuating member is in a first direction perpendicular to the first port and at least another portion of the fluid flow through the noise attenuating member is in a second direction perpendicular to the second port;
- wherein the first port and the second port connect to the internal cavity through different surfaces of the housing.
A noise attenuation unit connectable to become part of a fluid flow path comprising:
- a housing defining an internal cavity and having a first port and a second port each connectable to a fluid flow path and in fluid communication with one another through the internal cavity;
- and
- a noise attenuating member, comprising a porous material, seated in the internal cavity of the housing within the flow of the fluid communication between the first port and the second port;
- wherein the noise attenuating member has a hollow portion therein having an open first end and a closed second end, wherein the hollow portion is larger than pores of the porous material;
- wherein the fluid communication between the first port and the second port includes fluid flow through the noise attenuating member and a secondary fluid flow path around one or more outer sides of the noise attenuating member;
- wherein the first port and the second port connect to the internal cavity through different surfaces of the housing.
A noise attenuation unit connectable to become part of a fluid flow path comprising:
- a housing defining an internal cavity and having a first port and a second port each connectable to a fluid flow path and in fluid communication with one another through the internal cavity, wherein the internal cavity includes a plurality of spaced-apart support members extending from an interior bottom thereof upward into the internal cavity to collectively define a first seat upon which the noise attenuating member is seated and collectively define a plurality of pathways for fluid flow between the noise attenuating member and the interior bottom of the internal cavity;
- and
- a noise attenuating member, comprising a porous material, seated in the internal cavity of the housing within the flow of the fluid communication between the first port and the second port, wherein the noise attenuating member includes at least one bore therethrough, and the interior bottom, generally centered under one of the at least one bore beneath the noise attenuating member, is generally shaped as an interior of one-half of a horn torus when viewed as a transverse cross-section;
- wherein the fluid communication between the first port and the second port includes fluid flow through the noise attenuating member and a secondary fluid flow path around one or more outer sides of the noise attenuating member;
- wherein the first port and the second port connect to the internal cavity through different surfaces of the housing.
Dependencies are inferred from the claim text.