Muffler assembly of internal combustion engine

Details Muffler assembly of internal combustion engine Muffler assembly of internal combustion engine

1991-03-08

1993-02-02

Gellner, Michael L.

Acoustics

Sound-modifying means

Muffler, fluid conducting type

181269, 181272, 181273, 181282, F01N 108

Patent

active

051839776

ABSTRACT:
A muffler assembly of an internal combustion engine comprises an inner casing in which is defined a first expansion chamber into which is inserted one end of the exhaust pipe having another end connected to an exhaust gas port of the engine, an outer casing disposed outside the inner casing so as to define second and third expansion chambers between the inner and outer casings, a first baffle pipe disposed so as to mutually communicate the first and second expansion chambers, a second baffle pipe disposed so as to mutually communicate the second and third expansion chambers, and a tail pipe member disposed so as to communicate the third expansion chamber and the outside of the outer casing. The inner and outer casings are formed by two plate members, respectively, which are secured together when the muffler assembly is assembled. A sound absorption chamber is formed around the outer periphery of the tail pipe.

REFERENCES:
patent: 4416350 (1983-11-01), Hayashi
patent: 4972921 (1990-11-01), Takada et al.
patent: 5025890 (1991-06-01), Hisashige et al.

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