Patent ID: 6425573
Filing Date: 2002-07-30
Classification: F02M,Y10S

Abstract:
In a carburetor for an engine with the carburetor having a fuel supplying mechanism in which fuel in a fuel tank is supplied to a constant-pressure fuel chamber through a flow-in valve by a fuel pump, and further supplied from the constant-pressure fuel chamber to an inlet of a fuel nozzle opening into an air intake passage of the carburetor, the fuel supplying mechanism comprising:a purge pump, a fuel opening to the constant pressure fuel chamber through which the inlet of the fuel nozzle communicates with the constant pressure fuel chamber, a plurality of vapor reservoir chambers each opening into the ceiling wall of the constant pressure fuel chamber at spaced-apart locations with the opening of each vapor reservoir chamber being at a higher position than the fuel opening to the inlet of the fuel nozzle, a vapor port opening into each vapor reservoir chamber, the purge pump communicating with the vapor port in each reservoir chamber, and the fuel vapor in the plurality of vapor reservoir chambers is removed through the vapor ports by the operation of said purge pump and discharged through a passage out of said carburetor.