Exhaust gas muffler

Details Exhaust gas muffler Exhaust gas muffler

1991-04-30

1992-12-01

Gellner, Michael L.

Acoustics

Sound-modifying means

Muffler, fluid conducting type

181266, 181276, 181282, F01N 108

Patent

active

051681323

ABSTRACT:
An exhaust gas muffler comprises a double-walled casing having an inlet end receiving a stream of the exhaust gas and an outlet end for the exhaust gas, the outlet end comprising an outer tube surrounding a perforated inner tube spaced therefrom, and the tubes defining therebetween a perforation resonator chamber succeeded by a whistling sound resonator. The casing includes an outer wall and a corrugated inner wall defining a gap with the outer wall. A heat-resistant and sound-damping intermediate layer is arranged in the gap between the inner and outer walls and braces the inner wall against the outer wall. Transverse partitions divide the casing into a plurality of chambers between the inlet and outlet ends, and tubes connect the chambers and reverse the exhaust gas stream at least twice between the inlet and outlet ends.

REFERENCES:
patent: 2113828 (1938-04-01), Compo
patent: 2922485 (1960-01-01), Muller
patent: 3289786 (1966-12-01), Powers

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