Exhaust system for watercraft

Details Exhaust system for watercraft Exhaust system for watercraft

1995-03-08

1996-09-17

Swinehart, Edwin L.

Marine propulsion

Means for accomodating or moving engine fluids

Means for handling exhaust gas

440 38, B63H 2132

Patent

active

055563147

ABSTRACT:
A number of exhaust systems for watercraft propelled by a propulsion unit contained within a tunnel formed in the underside of the hull. This tunnel has an opening through the side of the hull and exhaust gases are delivered to the tunnel from the engine through an exhaust system having an exhaust opening communicating with the tunnel. Various flow controlling arrangements are provided for controlling the flow through one or all of the openings so as to assist in exhaust silencing without significantly increasing back pressure.

REFERENCES:
patent: 2935039 (1960-05-01), Thompson
patent: 3742895 (1973-07-01), Horiuchi
patent: 4274357 (1981-06-01), Dawson
patent: 4631032 (1986-12-01), Nishida
patent: 4643685 (1987-02-01), Nishida
patent: 4689026 (1987-08-01), Small
patent: 4989409 (1991-02-01), Nakase et al.

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