Muffler device

Details Muffler device Muffler device

1998-02-27

1999-07-27

Dang, Khanh

Acoustics

Sound-modifying means

Muffler, fluid conducting type

181265, 181238, 181228, F01N 108

Patent

active

059293985

ABSTRACT:
A small-sized muffler having porous partition walls includes a first expansion chamber, a second expansion chamber, a third expansion chamber and a fourth expansion chamber. A first porous partition wall is longitudinally arranged within the third expansion chamber so as to define a fifth expansion chamber. Similarly, a second porous partition wall is longitudinally arranged within the first expansion chamber so as to define the sixth expansion chamber. The first porous partition wall and the second porous partition wall are provided with small holes over their entire surface. The first porous partition wall and the second porous partition wall are each formed as a convexly curved surface curved toward the center of the muffler around the first feeding pipe and the second feeding pipe, respectively.

REFERENCES:
patent: 1988048 (1935-01-01), Peik
patent: 2009343 (1935-07-01), Peik
patent: 4416350 (1983-11-01), Hayashi
patent: 5608194 (1997-03-01), Okazaki et al.
Japanese Utility Model Laid-Open No. JP-U-56-83622 ; Muffler Device of Internal Combustion Engine ; Publication date Jul. 6, 1981.

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