Float Carburetor

A float carburetor is a type of carburetor used in internal combustion engines to mix air and fuel for combustion. It consists of a float chamber, a float, and a needle valve.

The float chamber is a reservoir that holds the fuel. The float, which is usually made of a hollow metal or plastic material, floats on top of the fuel in the chamber. The float is connected to a needle valve, which controls the flow of fuel into the chamber.

When the engine is running, air is drawn into the carburetor through the air intake. The air passes through a narrow passage called the venturi, which creates a low-pressure area. This low-pressure area draws fuel from the float chamber through the needle valve.

The float in the float chamber rises as the fuel level increases, and when it reaches a certain level, it closes the needle valve to stop the flow of fuel. This maintains a consistent fuel level in the float chamber, ensuring that the engine receives the correct fuel-air mixture for efficient combustion.

Float carburetors are commonly used in small engines, such as those found in lawnmowers, motorcycles, and small boats. They are relatively simple and reliable, but they may require occasional adjustment or cleaning to ensure proper operation.