Resonator with internal supplemental noise attenuation device
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United States of America Patent
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Sep 14, 2010
Grant Date -
Oct 2, 2008
app pub date -
Mar 28, 2007
filing date -
Mar 30, 2006
priority date (Note) -
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status (Latency Note)
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Abstract
A resonator for an induction system includes an inlet and outlet with a resonator cavity arranged therebetween. A tube is arranged within the resonator cavity and at least partially extends between the inlet and outlet. In one example, at least one supplemental noise attenuation device is in communication with the arcuate tube, such as a quarter wave tube and/or Helmholtz resonator. A large opening is provided in the tube that opens into the resonator cavity. In one example, the large opening is arranged on an outer radius side and faces a large cavity portion of the resonator cavity. Additional supplemental noise attenuation is provided by a collar arranged concentrically relative to the tube providing an annular quarter wave tube that is coaxial with the direction of flow from the outlet.
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