Marine exhaust system

Details Marine exhaust system Marine exhaust system

1975-10-14

1977-01-11

Kunin, Stephen G.

Acoustics

Anatomic or prosthetic relation

Ear and mouth

9 6P, 181 39, 60310, B63H 2132

Patent

active

040021360

ABSTRACT:
A marine exhaust system for boats powered by an internal combustion engine is disclosed. An exhaust chamber is located in the stern of the boat and is connected to the engine exhaust manifold. A submerged exhaust port emits exhaust gases below the water level to silence exhaust noise. The exhaust port has a recessed opening so that relative movement of water past the port assists in drawing the exhaust gases from the chamber. Atmospheric vent holes communicate the chamber with atmosphere to exhaust gases when the boat is idling or operating at slow speeds.

REFERENCES:
patent: 2713841 (1955-07-01), Forbes
patent: 3162171 (1964-12-01), Willy
patent: 3198162 (1965-08-01), Larsen
patent: 3342032 (1967-09-01), Cox et al.
patent: 3371645 (1968-03-01), Ward

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