The carburetor works by using the Venturi effect to create a low-pressure area that draws fuel from the fuel bowl into the airstream. The amount of fuel drawn in is controlled by a needle valve, which is regulated by the engine's throttle. As the engine's demand for fuel increases, the throttle opens, allowing more air to flow into the carburetor and drawing in more fuel.
Once the air and fuel are mixed, they are passed into the engine's cylinders, where they are compressed and ignited by the spark plugs. The combustion of the air and fuel mixture creates the power that drives the engine.
Carburetors have been used in internal combustion engines for over a century, but they have been gradually replaced by fuel injection systems in modern vehicles. Fuel injection systems are more efficient and precise than carburetors, and they produce lower emissions. However, carburetors are still used in some small engines and older vehicles.
