초록 ▼

A muffler for an internal combustion engine for effectively damping noise over a wide frequency range, from low frequency noise to high frequency noise. An absorber packed type muffler adapted to absorb noise by a sound absorbing material is inserted in and fixed to a housing which has a bore or bor

A muffler for an internal combustion engine for effectively damping noise over a wide frequency range, from low frequency noise to high frequency noise. An absorber packed type muffler adapted to absorb noise by a sound absorbing material is inserted in and fixed to a housing which has a bore or bores thereinside, thereby forming one of a pipe inserted type muffler, a resonance type muffler and an interference type muffler to attain combined characteristics of both the types of mufflers.

대표청구항 ▼

A muffler assembly for admitting gases accompanied by noise to dampen the noise, comprising: a housing member generally cylindrical in shape having interior plates which are substantially perpendicular to the longitudinal axis of said housing member to define a plurality of chambers; a muffler suppo

A muffler assembly for admitting gases accompanied by noise to dampen the noise, comprising: a housing member generally cylindrical in shape having interior plates which are substantially perpendicular to the longitudinal axis of said housing member to define a plurality of chambers; a muffler supported in said housing member, said muffler including: gas induction means for admitting the gases at one end thereof and discharging a portion of said gases at the other end thereof into a second of said plurality of chambers, said gas induction means having a perforated section; an air permeable sound absorbing member mounted around at least the perforated section of said gas induction means for allowing the remaining portion of said gas admitted into said gas induction means to be passed through said perforated section and said air permeable absorbing member to absorb the noise; a retainer member having communication and non-communication wall sections formed for covering and supporting the outer periphery of said sound absorbing member, said communication section being formed to discharge the remaining portion of the admitted gases into the first of said plurality of chambers; a pipe connecting said first and second chambers such that gases which have been discharged into the second chamber can pass through said pipe and back into said first chamber to interfere with the gases being discharged from said communication section of the retainer member; and means communicating with said first chamber for discharging gases from the first chamber to the atmosphere.