Outboard motor cooling system

Details Outboard motor cooling system Outboard motor cooling system

1997-05-27

1999-07-13

Swinehart, Ed L.

Marine propulsion

Means for accomodating or moving engine fluids

Cooling for engine

440 89, B63H 2110

Patent

active

059218290

ABSTRACT:
A cooling system for an outboard motor propelling a watercraft and powered by an engine, is disclosed. The cooling system includes a first cooling system comprising a coolant flow path through the engine and an oil cooler for cooling the engine and oil of the lubricating system. The cooling system includes a second cooling system comprising a water path from the body of water in which the motor is operating to a heat exchanger and thereon to a discharge back to the body of water. The first cooling system includes two branches, one branch which passes through the heat exchanger and a second branch which does not. A control is provided for routing the coolant through the first branch for cooling within the heat exchanger when the coolant is hot, and for routing through the second branch when the coolant is cool, allowing the engine to warm up.

REFERENCES:
patent: 4260011 (1981-04-01), Brown
patent: 5048467 (1991-09-01), Kojima
patent: 5109809 (1992-05-01), Fujimoto
patent: 5215164 (1993-06-01), Shibata
patent: 5383803 (1995-01-01), Pilgrim
patent: 5555855 (1996-09-01), Takahashi
patent: 5647315 (1997-07-01), Saito

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