Patent ID: 6267102
Filing Date: 2001-07-31
Classification: F02M,Y10S

Abstract:
A carburetor, comprising:a body;a fuel and air mixing passage formed in the body and having a venturi portion;a throttle valve in the fuel and air mixing passage movable between idle and wide open throttle positions;at least one high speed fuel nozzle in the body opening into the mixing passage upstream of the throttle valve when in its idle position and in communication with the fuel and air mixing passage and the fuel chamber;at least one low speed fuel nozzle in the body opening into the mixing passage downstream of the throttle valve when in its idle position and in communication with the fuel and air mixing passage and the fuel chamber;a supplemental air passage open to the fuel air mixing passage at one end and communicated with both the low speed and high speed fuel nozzles through one or more passages, first with a passage generally adjacent to the low speed fuel nozzle and thereafter with a passage leading to the high speed nozzle whereby at least when the throttle valve is in its wide open throttle position air flowing through the supplemental air passage passes through said passage adjacent to the low speed fuel nozzle before being drawn through the high speed nozzle to reduce the liquid fuel adjacent to the low speed fuel nozzle which is not needed for engine operation at least when the throttle valve is rapidly moved from its wide open throttle position to its idle position.