Patent ID: 6086054
Filing Date: 2000-07-11
Classification: F02M,Y10S

Abstract:
A diaphragm carburetor comprising:a main nozzle comprising a tubular member extending through a central axial line of a venturi in an air passage of a carburetor to a point substantially spanning the venturi, the tubular member including:a first end in fluid communication with a source of fuel,a second end opposite the first end, anda plurality of nozzle openings formed between the first and second ends in a circumferential surface of the tubular member;a throttle valve rotatably installed in the venturi downstream of the main nozzle, the throttle valve rotatable from a fully closed to a fully open position; anda fuel port formed in a wall surface of the air passage proximate a downstream side of an outside circumferential edge of the throttle valve when the throttle valve is in the fully closed position,wherein the throttle valve, the fuel port, and a first nozzle opening of the plurality of nozzle openings are configured so that fuel flow from the first nozzle opening to the air passage is initiated as the throttle valve begins to rotate from a fully closed position towards a fully open position, the first nozzle opening being the most proximately located of the plurality of nozzle openings to the first end of the tubular member.