초록 ▼

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 pa

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 axial length of the outer wall. Both single and dual muffler systems are described. Methods of use and operation are also provided.

대표청구항 ▼

[ We claim:] [1.] A muffler arrangement comprising:(a) an outer wall defining an internal volume and having first and second, opposite ends; said outer wall having an outer dimension of less than or equal to 11 inches, and an axial length between said first and second ends of less than or equal to 6

[ We claim:] [1.] A muffler arrangement comprising:(a) an outer wall defining an internal volume and having first and second, opposite ends; said outer wall having an outer dimension of less than or equal to 11 inches, and an axial length between said first and second ends of less than or equal to 60 inches;(b) an inlet tube oriented partially within said internal volume and adjacent to said first end;(i) said inlet tube including a full choke;(c) a first, inner, perforated wall spaced from said outer wall and defining a first, annular, volume therebetween;(d) a first region of packing material positioned within said first annular volume;(e) an outlet tube oriented partially within said internal volume and adjacent to said second end;(i) said second end being in-line relative to said first end;(ii) said outlet tube having a first perforated section;(f) a second inner wall spaced from at least a portion of an extension of said first perforated section of said outlet tube and defining a second annular volume therebetween; and(g) a second region of packing material positioned within said second annular volume.