|국가/구분||United States(US) Patent 등록|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 10 인용 특허 : 49|
A muffler is described for muffling both positive power and compression brake type engine retarders. The muffler includes an outer shell defining an internal volume. A first, inner, perforated wall is spaced from the outer shell and defines a first, annular, volume therebetween. A first volume of packing material is positioned within the annular volume. An inlet tube is oriented within the internal volume. In certain embodiments, the inner perforated wall circumscribes at least a portion of the inlet tube, and extends a distance of at least 25% of the ax...
1. A method for muffling noise from a system including a truck during operation of a compression-type engine retarder using no more than one muffler; the truck having an engine rated for operation at a rated rpm at a selected rpm value of 1800 or above, for a power of at least 500 hp; the muffler having an outer shell with an outside dimension of no greater than 11 inches and an overall length of no greater than 60 inches; the method comprising a step of:(a) muffling engine noise, during operation of the compression-type engine retarder, at an octave ban...