Silencer containing one or more porous bodies

Details Silencer containing one or more porous bodies Silencer containing one or more porous bodies

2006-09-12

2006-09-12

Lockett, Kimberly (Department: 2837)

Acoustics

Sound-modifying means

Muffler, fluid conducting type

C181S211000, C181S247000

Reexamination Certificate

active

07104358

ABSTRACT:
A silencer for silencing and also for filtering exhaust gases, contains at least one acoustic resonator chamber (13, 14, 15, 16) (Helmholtz frequency), at least one porous body (7, 8) the porous body (7, 8) occupying at least part of the chamber and at least one connecting passage (17) for leading gas from each one of the acoustic chamber wherein the connecting passage (17) extend along the outher surface of the porous body, so as to lead along a helical flow path (19).

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