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Wednesday, 26 December 2012

Carburetor




Carburetor:-

A carburetor or carburettor is a device
that blends air and fuel for an internal combustion engine. It is sometimes, but not always, shortened to "Carb" in North America and the United Kingdom. The carburetor works on Bernoulli's principle: the faster air moves, the lower its static pressure, and the higher its dynamic pressure. The throttle (accelerator) linkage does not directly
control the flow of liquid fuel. Instead, it actuates carburetor mechanisms which meter the flow of air being pulled

into the engine. 
The speed of this flow, and therefore its pressure, determines the
amount of fuel drawn into the airstream. When carburetors are used in aircraft with piston engines, special designs and features are needed to prevent fuel starvation during inverted flight. Later engines used an early form of fuel injection known as a "Pressure carburetor".

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