Patent ID: 6082487
Filing Date: 2000-07-04
Classification: F01N

Abstract:
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.