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FUEL SYSTEM

  • US 3,783,841 A
  • Filed: 10/04/1971
  • Issued: 01/08/1974
  • Est. Priority Date: 10/04/1971
  • Status: Expired due to Term
First Claim
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1. A fuel system for a gasoline fueled spark ignited internal combustion engine comprising a gasoline source, a conduit connecting said gasoline source through fuel switching means to the fuel inlet of a carburetor mounted on the engine intake manifold, a vaporizing chamber, a second conduit connecting said gasoline source to said vaporizing chamber, pump means in said second conduit adapted to pump gasoline into said vaporizing chamber, a one-way check valve in said second conduit between said pump means and said vaporizing chamber adapted to allow flow towards said chamber but stop reverse flow, heating means in said vaporizing chamber adapted to vaporize a volatile portion of said gasoline pumped into said chamber thereby increasing the pressure in said chamber, a vapor conduit connecting said chamber with condensing means, a one-way check valve in said vapor conduit adapted to allow flow towards said condensing means in response to said increased pressure in said chamber and to stop reverse flow whereby said volatile portion is condensed forming condensate, a container for said condensate connected to said condensing means, and a condensate conduit connecting said container through said valve switching means to said fuel inlet of said carburetor, said fuel switching means functioning to deliver said condensate to said fuel inlet when said engine is below operating temperature and to deliver said gasoline to said fuel inlet when said engine is at or above operating temperature.

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