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Two-barrel downdraft Holley 2280 carburetor Cross-sectional schematic. A carburetor (also spelled carburettor or carburetter) [1] [2] [3] is a device used by a gasoline internal combustion engine to control and mix air and fuel entering the engine. [4]
An updraft carburetor is a type of carburetor in which the air flows upward within the device. [1] Other types are downdraft and sidedraft. [2] An updraft carburetor was the first type in common use. [3] In it air flows upward into the venturi to mix with the fuel. [2] An updraft carburetor may need a drip collector. [4]
Original design incorporating a leather bellows which was replaced by a piston. This image was published 1908 and 1909 A pair of SU carburettors from an MGB. The SU carburettor is a constant-depression carburettor that was made by a British manufacturer of that name or its licensees in various designs spanning most of the twentieth century.