Internal-combustion engines – Cooling
Patent
1996-09-26
1998-03-31
Kamen, Noah P.
Internal-combustion engines
Cooling
440 88, 165 44, F01P 900
Patent
active
057326657
ABSTRACT:
Novel apparatus and methods for cooling a watercraft internal combustion engine which supplies rotational force to a drive unit attached to the watercraft are described. The apparatus comprises a heat exchanger connected to or integral with the drive unit, the heat exchanger having therein a hollow loop connected to the engine cooling system for circulating a flow of fluid from the cooling system through the loop and thence back to the cooling system. The heat exchanger is adapted to be disposed in thermally-conductive heat exchange contact with water when the watercraft is being propelled by the drive unit. In a preferred embodiment, the heat exchanger extends from the watercraft in a substantially horizontal plane which is no lower than the bottom of the watercraft, is disposed above a propeller connected to the drive unit, and is sized and configured to deter cavitation around the propeller. The apparatus is uniquely adapted to provide an internal combustion engine cooling system for engines of watercraft propulsion systems operated in waters which are shallow and/or filled with vegetation or other floating debris.
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patent: 5104291 (1992-04-01), Morrison
Kamen Noah P.
Patty II R. Andrew
Sieberth John F.
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