Acoustically tuned muffler
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United States of America Patent
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Jul 18, 2023
Grant Date -
Sep 1, 2022
app pub date -
May 17, 2022
filing date -
Oct 5, 2017
priority date (Note) -
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status (Latency Note)
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Abstract
A muffler for receiving exhaust gas from a combustion engine comprises a shell, first and second inlet pipes each having outlets providing exhaust gas to a mixing chamber within the shell, a first chamber and a second chamber positioned within the shell and a pair of communication pipes each including an inlet receiving exhaust gas from the mixing chamber. Each communication pipe includes an outlet providing exhaust to the second chamber. Each of the communication pipes further includes a Helmholtz opening positioned downstream of the mixing chamber. The Helmholtz openings are open to the first chamber.
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