Marine engine with primary and secondary fuel reservoirs

  • US 6,694,955 B1
  • Filed: 07/09/2002
  • Issued: 02/24/2004
  • Est. Priority Date: 07/09/2002
  • Status: Active Grant
First Claim
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1. A marine propulsion system, comprising:

  • a first fuel reservoir;

    a first fuel pump connected between said first fuel reservoir and a fuel supply device of an internal combustion engine;

    a vent conduit connected to said first fuel reservoir through which fuel vapor can flow out of said first fuel reservoir;

    a second fuel reservoir having an inlet and an outlet, said inlet being connected in fluid communication with said vent conduit for receiving said fuel vapor flowing from said first fuel reservoir; and

    a second fuel pump connected to said first fuel reservoir for drawing fuel from a fuel tank and causing said fuel to flow into said first fuel reservoir;

    a pressure sensitive check valve connected in fluid communication with said second fuel pump to bypass said fuel from an outlet of said second fuel pump to an inlet of said second fuel pump when the fuel pressure at said outlet of said second fuel pump exceeds a predetermined threshold magnitude.

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