Cooling device in outboard engine system

Details Cooling device in outboard engine system Cooling device in outboard engine system

1999-09-24

2000-11-14

Basinger, Sherman

Marine propulsion

Screw propeller

Shafting

440 52, 440 76, 440 89, B63H 2332

Patent

active

061462225

ABSTRACT:
In an outboard engine, a support member for supporting a drive shaft and an exhaust pipe within an extension case can be cooled by outside water pumped by utilizing the exhaust pressure from the engine. The inside of the extension case is divided, by the support member for supporting the drive shaft and the exhaust pipe, into an upper chamber communicating with the open air, and a lower chamber into which outside water is introduced, so that the exhaust gas from the exhaust pipe is discharged into the lower chamber. Both the upper and lower chambers are in communication with each other through a communication pipe. Thus, during operation of the engine, the support member and the depending members are cooled by the outside water forced up from the lower chamber through the communication pipe into the upper chamber.

REFERENCES:
patent: 2676559 (1954-04-01), Davies
patent: 3968767 (1976-07-01), Blanchard
patent: 6033274 (1976-07-01), Mizuguchi et al.

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