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Fuels burn faster and more efficiently when they present a large surface area to the oxygen in air. Liquid fuels must be atomized to create a fuel-air mixture, traditionally this was done with a carburetor in petrol engines and with fuel injection in diesel engines. Most modern petrol engines now use fuel injection too — though the technology ...
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]
Carburetor icing is caused by the temperature drop in the carburetor, as an effect of fuel vaporization, and the temperature drop associated with the pressure drop in the venturi. [2] If the temperature drops below freezing, water vapor will freeze onto the throttle valve, and other internal surfaces of the carburetor. The venturi effect can ...
It was succeeded by the Motorcraft 2150 carburetor. Flow rate is determined by the diameter of the venturi, which was cast into the float chamber side as a number within a circle representing the venturi size in inches: 0.98 - 190 cfm, 1.01 - 240 cfm, 1.02 - 245 cfm, 1.08 - 287 cfm, 1.14 - 300 cfm, 1.21 - 351 cfm, 1.23 - 356 cfm, 1.33 - 424 cfm [2]
Charles Nelson Pogue (15 September 1897 – 1985) was a Canadian mechanic and inventor who in the 1930s filed a series of US patents for a miracle carburetor (sometimes called the Winnipeg carburetor [1]) that would allegedly enable a car to attain 200 miles per US gallon (1.2 L/100 km; 240 mpg ‑imp); it was described as a vaporising carburetor or sometimes a catalytic carburetor.
In the conventional carburetor, a venturi in the airflow creates a lowered pressure and this is enough to encourage the flow of fuel through the metering jets. The flow rate is critically sensitive to the fuel pressure at the jet, i.e. the hydrostatic head owing to the depth of fuel between the jet and the float level.