Marine wet exhaust system and improvements in powered marine ves

Details Marine wet exhaust system and improvements in powered marine ves Marine wet exhaust system and improvements in powered marine ves

1976-05-05

1977-04-26

Blix, Trygve M.

Acoustics

Anatomic or prosthetic relation

Ear and mouth

60310, 55276, 181 51, B63H 2134, F01N 304

Patent

active

040194566

ABSTRACT:
An exhaust gas-cooling water separation chamber, a gas collection chamber and gas acceleration and gas flow-shaping conduit means. The entrance of the separation chamber is connectable to water coolant and gas exhaust tubes from a marine engine. The separation chamber is fitted with a water deflector disposed below the gas exit from that chamber, while a gas dam is disposed in the water exit from that chamber, the entrance and water exit going below the deflector level. The gas collection chamber is connected to the gas exit and a gas acceleration chamber which tapers downstream is connected to the gas collection chamber. A gas velocity tube is connected to and extends downstream of the gas acceleration chamber to cause exhaust gases to exit through the hull of a boat in which the system may be installed with sufficient force to penetrate the turbulent boundary layer of air around the boat hull when the boat is in motion, thus preventing the gases from passing back into the rear of the boat, due to the "station wagon" effect. An air dilution tube can be connected to the gas velocity tube to provide a scarfing action by the exhaust gases, causing their dilution to below noxious levels. The system may include exhaust noise-retarding means, such as a muffler and/or air barrier at the separation chamber entrance.

REFERENCES:
patent: 1892853 (1933-01-01), Rustin et al.
patent: 3176791 (1965-04-01), Betts et al.
patent: 3296997 (1967-01-01), Hoiby et al.
patent: 3553944 (1971-01-01), Hum et al.

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