Exhaust system for marine propulsion

Details Exhaust system for marine propulsion Exhaust system for marine propulsion

1987-09-11

1989-03-14

Hart, Douglas

Power plants

Internal combustion engine with treatment or handling of...

Treated by washing, or having liquid contact structure

60320, 440 89, F01N 304

Patent

active

048115606

ABSTRACT:
Several embodiment of small boats having improved exhaust systems for precluding the entry of water into the engine combustion chambers from the body of water in which the watercraft is operating. In each embodiment, the exhaust system includes a horizontally extending expansion chamber with an exhaust gas outlet whichis defined by a vertically extending tube in the expansion chamber so as to prevent the likelihood of water reentering the engines through the exhaust system. Several arrangements are disclosed for draining the water from the expansion chamber and the exhaust gases are discharged from the engine into the tunnel around the jet drive unit.

REFERENCES:
patent: 3462947 (1969-08-01), Nowak
patent: 3765479 (1973-10-01), Fish
patent: 4643685 (1987-02-01), Nishida
patent: 4707986 (1987-11-01), Takada

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