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RESERVE FUEL SYSTEM FOR LIQUEFIED GAS POWERED ENGINES

  • US 3,710,809 A
  • Filed: 01/21/1971
  • Issued: 01/16/1973
  • Est. Priority Date: 01/21/1971
  • Status: Expired due to Term
First Claim
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1. A reserve fuel system for an engine operable by liquefied gas fuel from a main tank connected to the engine by a main fuel line comprising a reserve tank, an auxiliary fuel line for connecting the reserve tank to the main line for filling the reserve tank with liquefied fuel from the main tank and supplying vaporized gas fuel to the engine from the reserve tank when the main tank is empty, a cut-off valve in said auxiliary line, and means responsive to increase in pressure in the reserve tank above a predetermined value for relieving pressure in the reserve tank and for returning vented fuel to the main line via the auxiliary line thereby preventing the hazardous venting of fuel to the atmosphere.

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