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STRATIFIED TWO-STROKE ENGINE AND DUAL PASSAGE FUEL SYSTEM

  • US 20120247435A1
  • Filed: 03/21/2012
  • Published: 10/04/2012
  • Est. Priority Date: 04/03/2011
  • Status: Active Grant
First Claim
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1. A gaseous fueled dual passage carburetor comprising:

  • a main throttle body (401)(479);

    a secondary throttle body (8901);

    a lean passage 9300;

    a lean valve 81;

    a rich charge passage 8310b;

    a rich valve 994b;

    at least one pressure regulating chamber with a diaphragm, spring, and needle valve;

    at least one fuel metering chamber (317) with a diaphragm, spring, and needle valve;

    a first fuel passage 320 leading into the lean passage 9300;

    a second fuel passage 220b leading into the rich charge passage 8310b;

    at least one fuel tube (220c) connecting the at least one fuel meter chamber (317) to at least one fuel orifice (411b) in the secondary throttle body (8901);

    a fuel inlet (620) receiving fuel from at least one fuel tank (850);

    a venture (9300);

    a first fuel orifice (8410) in the venture (9300); and

    a second fuel orifice in the rich charge passage (8310b).

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