Broad band low frequency passive muffler
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United States of America Patent
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-
Sep 27, 1994
Issued Date -
N/A
app pub date -
Dec 16, 1993
filing date -
May 1, 1992
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A sound absorbing muffler used to attenuate noise carried by the exhaust gases of an internal combustion engine includes a straight-through flow tube of cross-section having no baffles or flow reversals. The muffler utilizes both reactive and dissipative components and includes an outer annular resonating chamber and an inner sound absorbing chamber. The muffler's configuration produces effective broad band noise attenuation even at lower frequencies, yet low backpressure.
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