Marine propulsion – Means for accomodating or moving engine fluids – Means for handling exhaust gas
Patent
1988-08-04
1990-01-30
Basinger, Sherman D.
Marine propulsion
Means for accomodating or moving engine fluids
Means for handling exhaust gas
B63H 2132
Patent
active
048970611
ABSTRACT:
A marine propulsion system in which exhaust is routed through an internal exhaust passage which includes a convergent area forming a restricted flow path includes a pressure relief opening formed adjacent the area of restricted exhaust flow for relieving exhaust pressure. One or more closure plates are connected adjacent the one or more openings to selectively control the passage of exhaust therethrough. The plates are biased toward a closed position in which exhaust is prevented from passing through the openings. The bias on the plates is designed so as to yield to a predetermined level of exhaust pressure within the exhaust passage at the area of restricted exhaust flow, to thereby relieve exhaust pressure build-up and improve the performance of the marine propulsion system.
REFERENCES:
patent: 2570509 (1951-10-01), Bandli
patent: 3434447 (1969-03-01), Christensen et al.
patent: 3745964 (1973-07-01), Henrich
Koepsel Roger E.
Steiner Ronald M.
Basinger Sherman D.
Brunswick Corporation
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