Muffler for marine engine

Details Muffler for marine engine Muffler for marine engine

1991-10-31

1993-03-23

Gellner, Michael L.

Acoustics

Sound-modifying means

Muffler, fluid conducting type

181264, 181272, 440 89, F01N 712

Patent

active

051966557

ABSTRACT:
An improved muffler for silencing the exhaust emitted from a water cooled marine engine comprising a housing enclosure partitioned by an angularly disposed inner planar baffle, the housing having an inlet for the exhaust gas and cooling water to fluidly communicate with a lower silencing chamber wherein the exhaust gas and cooling water are forced through a central passageway into an upper silencing chamber resulting in flow reversal and diminution in flow velocity so as to attenuate the exhaust noise, the exhaust gas and cooling water exiting the upper silencing chamber through an outlet fluidly communicated therewith and disposed collinearly with the input. The upper silencing chamber acting as a back flow preventor.

REFERENCES:
patent: 2241010 (1941-05-01), Chipley
patent: 4002136 (1977-01-01), Michalak
patent: 4192404 (1980-03-01), Nakagana et al.
patent: 4305477 (1981-12-01), Moore
patent: 4744778 (1988-05-01), Porter
patent: 4786265 (1988-11-01), Porter

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