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US 5,855,197 AGranted
Vapor separator for fuel injected engine
AssigneeSanshin Kogyo Kabushiki Kaisha
InventorMasahiko Kato
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AssigneeSanshin Kogyo Kabushiki Kaisha
InventorMasahiko Kato
Estimating the term…
A compact vapor separator for a fuel injection system reduces the size of the fuel system mounted on the side of an outboard engine. The girth of the outboard motor's power head consequently is decreased. In one embodiment, the vapor separator employs a plurality of rotary vane-type pumps. The pumps are sized to produce a sufficient flow rate and fuel pressure, while minimizing power consumption. At least one of the fuel pumps can be located on a periphery of a housing of the vapor separator and can be removably attached thereto to facilitate easy removal and assembly for service and repair. The vapor separator also can include a redundant seal arrangement to generally isolate an exterior casing of the fuel pump from the fuel and to seal an upper end of the housing. In another embodiment, a dividing wall separates the fuel pump from an fuel supply inlet of the fuel tank. The wall inhibits gas bubble migration toward the inlet of the fuel pump. The fuel pump thus draws less vapor.
A vapor separator assembly for a fuel delivery system used with an internal combustion engine, said vapor separator assembly comprising a housing defining an internal fuel tank which is enclosed within said housing, and a plurality of fuel pumps supported within said housing, each of said fuel pumps communicating with said fuel tank and with a return inlet port which flows into said fuel tank.
A vapor separator assembly for a fuel delivery system used with an internal combustion engine of an outboard drive, said vapor separator assembly comprising a housing defining an internal fuel tank which is enclosed within said housing, and a fuel pump being supported in a generally sealed and enclosed space within said housing, said fuel pump being a roller-vane type fuel pump.
A vapor separator assembly for a fuel delivery system used with an internal combustion engine, said vapor assembly comprising a housing defining an internal fuel tank which is enclosed within the housing, a fuel pump being supported with said housing, and a first seal positioned between a lower end of said fuel pump and said housing to generally isolate an upper portion of said fuel pump from fuel within said fuel tank.
A vapor separator assembly for a fuel delivery system used with an internal combustion engine, said vapor separator assembly comprising a housing defining an internal fuel tank which is enclosed within said housing, at least one fuel pump being supported by said housing with at least a portion of said pump being exposed outside said housing, and a releasable coupling interconnecting said pump and said housing to place said pump in communication with said fuel tank, said coupling being configured and arranged on the housing so that the fuel pump can be disconnected from the housing without opening the fuel tank.
A vapor separator assembly for a fuel delivery system used with an internal combustion engine, said vapor separator assembly comprising a housing defining an internal fuel tank which is located within said housing, at least one fuel pump being supported by said housing with a portion of said fuel pump being exposed outside said housing, and a releasable coupling interconnecting said pump and said housing to place said pump in communication with said fuel tank, said releasable coupling comprising an aperture in said housing sized to receive a lower end of said fuel pump with a seal compressed between a wall of said housing and a lower end of said pump.
A vapor separator assembly for a fuel delivery system used with an internal combustion engine, said vapor separator assembly comprising first and second separate fuel tanks which communicate with one another through a conduit, said conduit connected with said first fuel tank through a port formed in a wall of the first fuel tank, said wall being uncommon to said second fuel tank, a fuel inlet communicating with said first fuel tank, and at least one fuel pump communicating with said second fuel tank.
Dependencies are inferred from the claim text.