Marine propulsion – Means for accomodating or moving engine fluids – Cooling for engine
Patent
1993-05-17
1994-04-19
Sotelo, Jesus D.
Marine propulsion
Means for accomodating or moving engine fluids
Cooling for engine
123 4115, B63H 2110
Patent
active
053040791
ABSTRACT:
A supplemental remote mounted marine engine cooling system (20) includes a supplemental water pickup (36) mounted to the boat (18), and a flow control valve (38) supplying supplemental cooling water therethrough from the water pickup (36) to the main cooling system (20) when main cooling system water pressure on the downstream side (48) of a check valve (44) in the flow control valve (38) is less than supplemental cooling system water pressure on the upstream side (46) of the check valve (44), and blocking supplemental water flow therethrough when main cooling system water pressure is greater than supplemental cooling system water pressure. The control valve (38) also includes a relief valve (50) between the check valve (44) and the water pickup (36) and discharging excess supplemental cooling water when the check valve (44) is blocking water flow therethrough and supplemental cooling system water pressure is above a given bypass relief threshold. The control valve (38) provides continuous flow therethrough to a first outlet having the check valve (44) and/or a second bypass outlet having the relief valve (50), at high boat speed, to minimize deadhead pressure and minimize reduction in top end boat speed otherwise resulting from the addition of a supplemental water pickup. The water pickup (36) is provided by a tube (106) slicing out a core of water along the underside of the boat hull (108) with minimal drag and turbulence.
REFERENCES:
patent: 3323502 (1967-06-01), Whalen
patent: 4636175 (1987-01-01), Frazzell et al.
patent: 4728306 (1988-03-01), Schneider
patent: 4752257 (1988-06-01), Karls et al.
patent: 4767366 (1988-08-01), Lang
patent: 5045001 (1991-09-01), Borst
Brunswick Corporation
Sotelo Jesus D.
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