How does the carburetor function in an aircraft engine?

The function of the carburetor in an aircraft engine is to mix air and fuel for combustion. The carburetor plays a critical role in ensuring that the correct air-fuel mixture is delivered to the engine for efficient combustion. It draws air into the system through a venturi, where the airflow decreases in pressure, allowing fuel to be drawn from the fuel system into the airstream. This mixture of fuel and air is then sent into the combustion chamber, where it is ignited to produce power.

A well-mixed air-fuel ratio is essential for optimal engine performance, fuel efficiency, and preventing engine fouling. Deviations from the ideal mixture can lead to issues such as rough running or engine failure. In contrast to carburetors, other components serve different functions: for example, some are responsible for fuel flow regulation, electrical power generation, or altitude measurement, but these are not the primary role of the carburetor. It is this specific process of mixing air and fuel that accurately defines the purpose of the carburetor in an aircraft engine.