Acoustics – Sound-modifying means – Muffler – fluid conducting type
Patent
1997-07-16
1999-10-05
Dang, Khanh
Acoustics
Sound-modifying means
Muffler, fluid conducting type
181252, 181258, 181267, 181276, F01N 124
Patent
active
059628219
ABSTRACT:
The present invention is a noise reduction apparatus for use in the exhaust system of an internal combustion engine which absorbs acoustical energy from the pressurized exhaust gases while minimizing restrictions on the exhaust gases as they flow therethrough. The relatively unrestricted exhaust gas flow provided by the present invention significantly reduces the build up of back pressure and the associated drop in power and performance of the engine. At the same time, by absorbing acoustical energy from the exhaust gases, the noise level of the exhaust system is reduced. The present noise reduction apparatus includes a housing operatively adapted for being disposed in the exhaust system of an internal combustion engine, and a plurality of sound absorbing layers disposed inside the housing. Each layer is operatively adapted to allow exhaust gases to flow therethrough while absorbing acoustical energy from exhaust gases coming in contact with the layer.
REFERENCES:
patent: 582485 (1897-05-01), Reeves
patent: 712791 (1902-11-01), Hedstrom
patent: 1128306 (1915-02-01), Goelzer
patent: 1685701 (1928-09-01), Blanchard
patent: 1844105 (1932-02-01), Schnell
patent: 1861775 (1932-06-01), Aseltine
patent: 1876861 (1932-09-01), Compo
patent: 2036138 (1936-03-01), Haas
patent: 2185584 (1940-01-01), Boyce
patent: 2716463 (1955-08-01), Latulippe
patent: 3154388 (1964-10-01), Purse
patent: 3738448 (1973-06-01), Ver et al.
patent: 3776365 (1973-12-01), Richards
patent: 3786791 (1974-01-01), Richardson
patent: 4076099 (1978-02-01), Proksch
patent: 4167986 (1979-09-01), Conway
patent: 4595073 (1986-06-01), Thawani
patent: 5196653 (1993-03-01), Kiss
patent: 5350888 (1994-09-01), Sager, Jr. et al.
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