Charge forming device

Claim 1

IN CHARGE FORMING APPARATUS: (A) MEANS DEFINING AN INDUCTION PASSAGE HAVING AN AIR INLET SECTION AND A MIXTURE OUTLET SECTION; (B) AN INSERT REMOVABLY DISPOSED IN THE AIR INLET OF SAID INDUCTION PASSAGE TO DEFINE, WITH THE ADJACENT PORTIONN OF THE INDUCTION PASSAGE, A VENTURI, SAID INSERT INCLUDING (A) A HOLLOW ELONGATED INWARDLY TAPERING BODY PORTION, (B) SAID BODY BEING OFFSET RELATIVE TO THE AXIS OF THE INDUCTION PASSAGE SO THAT THE THROAT OF SAID VENTURI IS SMALLER AT ONE PART OF THE INDUCTION PASSAGE, (C) SAID BODY HAVING ITS SMALLER END WITHIN THE INDUCTION PASSAGE AND THE LARGER END SPACED OUTWARDLY OF THE AIR INLET OPENING OF THE AIR INLET SECTION, (D) A FLANGE ON THE OUTER END OF SAID BODY, (E) ARRANGED AXIALLY RELATIVE TOSAID INDUCTION PASSAGE, (AA) SAID FLANGE BEING OFFSET FFROM THE BODY AXIS SO AS TO BE ECCENTRIC RELATIVE TO SAID BODY, (BB) THE DIAMETER OF SAID FLANGE BEING SOME, WHAT GREATER THAN THE DIAMETER OF THE AIR INLET OF THE INDUCTION PASSAGE; (F) MEANS FOR POSITIONING THE INSERT WITHIN THE INDUCTION PASSAGE COMPRISING (AA) A PLURALITY OF VANES ON THE BODY SPACED ANNULARLY APART, (BB) SAID VANES EXTENDING LENGTHWISE IN THE INDUCTION PASSAGE COMPRISING (CC) THE OUTER ENDS OF SAID VANES BEING JOINED TO SAID FLANGE (DD) MEANS LIMITING INWARD MOVEMENT OF SAID INSERT, (G) MEANS RELEASABLY SECURING SAID INSERT IN SAID INDUCCTIONN PASSAGE; (C) A THROTTLE VALVE OPERABLY MOUNTED IN THE INDUCTION PASSAGE;; (D) SAID INDUCTION PASSAGE HAVING (A) A MAIN FUEL PORT, (B) A MIDRANGE FUEL PORT, (C) AND AN IDLE FUEL PORT; (E) AND MEANS FOR SUPPLYING FUEL TO SAID FUEL PORTS.