Exhaust relief system

Details Exhaust relief system Exhaust relief system

1983-12-27

1985-07-02

Hart, Douglas

Power plants

Internal combustion engine with treatment or handling of...

By means producing a chemical reaction of a component of the...

60310, 60320, 440 89, F01N 712

Patent

active

045260028

ABSTRACT:
The engine (11) of a stern drive (10) is provided with a vacuum relief valve (28) to relieve any vacuum which may occur in the exhaust manifold (16), thus preventing water from entering the engine through the exhaust system. The relief valve (28) is connected to allow one-way flow from the intake manifold (15) to the exhaust system, thus providing an essentially closed system.

REFERENCES:
patent: 3552121 (1971-01-01), Kitagawa
patent: 3921398 (1975-11-01), Kashmerick

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