Internal-combustion engines – Accessories – Covers – trays – vibrators – corrosion inhibitors – air filters
Patent
1996-11-25
1999-06-22
Miller, Carl S.
Internal-combustion engines
Accessories
Covers, trays, vibrators, corrosion inhibitors, air filters
123516, 137571, F02M 3900, F02K 3101
Patent
active
059132949
ABSTRACT:
An outboard motor for a watercraft includes a simply structured fuel supply system of a smaller size and a longer life than prior fuel supply systems. The fuel supply system includes a delivery fuel tank carried by the outboard motor. Fuel is pumped from an external fuel supply tank carried by the watercraft to the delivery fuel tank by a low-pressure fuel pump located within the outboard motor. A control system controls the low-pressure fuel pump so that a predetermined level of fuel is maintained in the delivery fuel tank. The control system includes a fluid level detection sensor that detects the level of fuel within the delivery fuel tank and produces a corresponding signal indicative of the fuel level. A control unit circuit receives the fluid level signal and determines if the fluid level in the tank is higher or lower than a predetermined maximum fuel level. If the fluid level is determined to be higher than a maximum fuel level, the control unit circuit deactivates the low-pressure fuel pump. If the fluid level is determined to be lower than the maximum fuel level, the control unit circuit activates the low-pressure fuel pump.
REFERENCES:
patent: 2926688 (1960-03-01), Muma
patent: 2953156 (1960-09-01), Bryant
patent: 2998056 (1961-08-01), Capehart
patent: 4252094 (1981-02-01), Draxler
patent: 4809666 (1989-03-01), Baltz
patent: 4811717 (1989-03-01), Nakahama
patent: 5036822 (1991-08-01), Kojima
patent: 5095880 (1992-03-01), Ricks
patent: 5197444 (1993-03-01), Lang
patent: 5417239 (1995-05-01), Ford
Suzuki Masaru
Takahashi Masanori
Watanabe Hitoshi
Miller Carl S.
Sanshin Kogyo Kabushiki Kaisha
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