Patent ID: 7090203
Filing Date: 2006-08-15
Classification: F02M,Y10S

Abstract:
1. A carburetor for an internal combustion engine, comprising: an intake pipe having an inner wall, the intake pipe supplying a fuel and an air for the internal combustion engine; a throttle valve disposed inside the intake pipe; and an annular venturi tube disposed at an upstream side or a downstream side of the throttle valve inside the intake pipe, the annular venturi tube being made of an annular body defining an inside air passage and an outside air passage inside an inner wall of the intake pipe, the annular body having a fuel discharging portion formed at an inner peripheral side thereof so to atomize the fuel by an air flow, wherein said carburetor further comprises an annular center venturi tube disposed at an inside of an inner wall of the annular venturi tube, the annular center venturi tube defining an inside air passage and an outside air passage inside the annular venturi tube, the annular center venturi tube having an annular body formed into a length that extends a length of the annular venturi tube in an air flow direction on both sides, the annular body of the annular center venturi tube having a fuel discharging portion formed at an inner peripheral side thereof so to atomize the fuel by an air flow.