Marine propulsion – Means for accomodating or moving engine fluids – Means for handling exhaust gas
Patent
1998-03-23
1999-11-09
Swinehart, Ed
Marine propulsion
Means for accomodating or moving engine fluids
Means for handling exhaust gas
B63H 2132
Patent
active
059803444
ABSTRACT:
An exhaust system for an internal combustion engine in a boat with exhaust manifold of the engine connected to an exhaust chamber. Within the exhaust chamber is a vacuum wedge having a top plate with a vertical opening therein with the top plate being spaced from the front wall of the exhaust chamber and its rearward end connected at its laterally edges to the hull at the junction of the transom and bottom of the hull and the rearward end portion, intermediate the lateral edges, connected to the transom or rear wall of the boat. The sides of the top plate being connected by side walls to the hull bottom and having lateral openings. An opening is formed in the hull bottom and extends laterally between these side walls and from the transom forward to underly the top plate so that the exhaust chamber is vented through the vacuum wedge when the boat is on plane. Standpipes connect vertically extending openings in the top plate to a location in the exhaust chamber above the stationary water line. When not on plane, low speed exhaust pipes connect the exhaust chamber to the outside of the hull above the water line. Vacuum pipes extend into the chamber with their intakes at the location of the stationery waterline, and a vacuum pump pumps water from the vacuum pipes to an oil/carbon separator and a second pump pumps the water from that separator to a oil/water separator and from the latter out the side of the hull.
REFERENCES:
patent: 4002136 (1977-01-01), Michalak
ECO Sound Inc.
Shall Harold D.
Swinehart Ed
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