F - Mech Eng,Light,Heat,Weapons – 01 – N
Patent
F - Mech Eng,Light,Heat,Weapons
01
N
172/31, 172/32
F01N 13/00 (2010.01) F01N 13/12 (2010.01) B63H 21/32 (2006.01) F01N 3/04 (2006.01)
Patent
CA 1057200
Abstract A marine exhaust system comprising an exhaust gas-cooling water separation chamber, a gas collection chamber and gas acceleration and gas flow-shaping conduit. 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 being below the deflector level. Gases from the separation chamber are exhausted through the gas collection chamber, the gas acceleration chamber, and the gas flow-shaping conduit in series to an exhaust outlet. The conduit com- prises a gas velocity tube which is connected to and extends downstream of the gas acceleration chamber to cause exhaust gases to exit through the hull of the boat in which the syst m may be installed with sufficient force to penetrate the turbulent boundary layer of air developed around the boat hull when the boat is in motion, thus eliminating the tendency of the gases to pass back into the rear of the boat from 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.
269051
Na
Whittaker Corporation
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