CARBURETOR FOR INTERNAL COMBUSTION ENGINE Russian patent published in 1994 - IPC

FIELD: engine engineering. SUBSTANCE: carburetor has case 1 with mixing chamber, emulsion passage 5 of free running system coupled with float chamber 9 through nozzles 6,8, by-pass passage 10 coupled with space 3 of mixing chamber of the carburetor upstream of the throttle and with space of mixing chamber 11 having sprayer 12 and outlet passage 13 coupled with space 4 downstream of the throttle, control member provided with profiled cone 15 mounted within chamber 11, and pneumatic drive having rod 17, diaphragm 18, first 21 and second 22 working spaces of an economizer. Control passage 24 is in communication with space 21 and with space 4 downstream of the throttle. Curved passage 23 for depressurization of ejection is provided in case 1. Top part of passage 23 is coupled with space 3 upstream of the throttle and bottom part with space 4 downstream of the throttle through passage 24. Top edge of inlet opening of passage 24 is positioned at bottom edge of throttle gate 2 when the gate is closed. Profiled washer 14 having sucking openings oriented to bottom part of the carburetor is mounted under the face of sprayer 12. EFFECT: improved design. 2 cl, 1 dwg