Cooling apparatus for auxiliary fuel tank in outboard motor

Details Cooling apparatus for auxiliary fuel tank in outboard motor Cooling apparatus for auxiliary fuel tank in outboard motor

1998-09-23

1999-11-16

Avila, Stephen

Marine propulsion

Means for accomodating or moving engine fluids

Cooling for engine

440900, B63H 2110

Patent

active

059847433

ABSTRACT:
An outboard motor includes an engine which is tiltable from a first position to a second position, and a drive mechanism connected to the engine for driving a propeller. When the engine is in the second position, the drive means is tilted upward. An auxiliary fuel tank is connected to the engine for storing fuel returning from a fuel injection valve side of the engine. A high-pressure fuel pump is connected to the engine and the auxiliary fuel tank for pumping fuel from the auxiliary fuel tank to the fuel injection valve side of the engine. A water jacket is connected to the auxiliary fuel tank, for cooling the fuel which is stored in the auxiliary fuel tank. A water pump is driven by the engine to supply water from an external water source to an inlet of the water jacket. A first discharge passage is connected to an outlet of the water jacket. An engine cover is provided, which covers the engine, the fuel pump, and the auxiliary fuel tank. The inlet of the water jacket is configured at a lowest portion of the water jacket when the engine is in the second position. The outboard motor also includes a second discharge passage attached to the water jacket, with the second discharge passage being connected to the inlet and being configured to be below the inlet when the engine is in the second position.

REFERENCES:
patent: 5383803 (1995-01-01), Pilgrim
patent: 5439404 (1995-08-01), Sumigawa

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