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특허 상세정보

Method and apparatus for improved noise attenuation in a dissipative internal combustion engine exhaust muffler

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) F01N-007/16    F01N-001/12   
미국특허분류(USC) 181/264; 181/280; 181/249; 181/268
출원번호 US-0029340 (2001-12-20)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Baker, Rod D.Peacock, Myers & Adams, PC
인용정보 피인용 횟수 : 14  인용 특허 : 98
초록

The use of fiber metal or similarly high flow resistance and high acoustic transparency material as a liner for traditional acoustically absorptive media in a dissipative muffler exhibits improved low frequency sound attenuation, reduces backpressure, and eliminates media entrainment or "blow-out" phenomenon which results in longer muffler life. The same class of materials may also be used to fashion an element that provides linear occlusion inside an otherwise line-of-sight type of muffler, where the occluding element provides improved impedance-matchin...

대표
청구항

The use of fiber metal or similarly high flow resistance and high acoustic transparency material as a liner for traditional acoustically absorptive media in a dissipative muffler exhibits improved low frequency sound attenuation, reduces backpressure, and eliminates media entrainment or "blow-out" phenomenon which results in longer muffler life. The same class of materials may also be used to fashion an element that provides linear occlusion inside an otherwise line-of-sight type of muffler, where the occluding element provides improved impedance-matchin...

이 특허에 인용된 특허 (98)

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