Carburetor
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A carburetor is a device used by a gasoline internal combustion engine to control and mix air and fuel entering the engine. The primary method of adding fuel to the intake air is through the Venturi tube in the main metering circuit, though various other components are also used to provide extra fuel or air in specific circumstances.
Two-barrel downdraft Holley 2280 carburetor
1979 Evinrude Type I side draft carburetor
Nomenclature for a single-barrel carburetor
Holley "Visi-Flo" model #1904 carburetors from the 1950s, factory equipped with transparent glass bowls
Venturi effect
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The Venturi effect is the reduction in fluid pressure that results when a moving fluid speeds up as it flows through a constricted section of a pipe. The Venturi effect is named after its discoverer, the 18th-century Italian physicist Giovanni Battista Venturi.
Venturi tube demonstration apparatus built out of PVC pipe and operated with a vacuum pump
A pair of Venturi tubes on a light aircraft, used to provide airflow for air-driven gyroscopic instruments
Image: Aircraft venturi 1
Image: Aircraft venturi 2