초록 ▼

The present invention provides an acoustic muffler for attenuating sound waves of the exhaust gas of an internal combustion engine including a shell, a plurality of walls closing both ends of the shell and dividing an interior of the shell into a plurality of chambers. The plurality of chambers incl

The present invention provides an acoustic muffler for attenuating sound waves of the exhaust gas of an internal combustion engine including a shell, a plurality of walls closing both ends of the shell and dividing an interior of the shell into a plurality of chambers. The plurality of chambers include a first chamber having a sound absorbing material disposed therein. An imperforate pipe extends between the walls of the first chamber. Preferably, the plurality of chambers also include a second and a third chamber communicating with the imperforate pipe. Furthermore, a fourth chamber communicates with the second chamber.

대표청구항 ▼

[ What is claimed is:] [1.] An attenuating apparatus comprising:a shell;first and second spaced apart walls coupled to said shell so as to define a first chamber;a sound absorbing material disposed in said first chamber;an imperforate conduit supported by said first and second walls and extending th

[ What is claimed is:] [1.] An attenuating apparatus comprising:a shell;first and second spaced apart walls coupled to said shell so as to define a first chamber;a sound absorbing material disposed in said first chamber;an imperforate conduit supported by said first and second walls and extending through said first chamber;a third wall coupled to said shell in spaced relation to said first wall so as to define a second chamber, said imperforate conduit communicating with said second chamber;a fourth wall coupled to said shell in spaced relation to said second wall so as to define a third chamber, said imperforate conduit communicating with said third chamber;a fifth wall coupled to said shell in spaced relation to said fourth wall so as to define a fourth chamber, said forth chamber communicating with said third chamber, anda perforated conduit supported by said first and second walls and extending through said first chamber.