In an un-supercharged engine, which part of the carburetor is responsible for the fuel atomization?

In an un-supercharged engine, the Venturi is the component of the carburetor that plays a crucial role in the fuel atomization process. The Venturi is a narrowing in the carburetor throat that creates a drop in pressure as air flows through. This drop in pressure causes fuel to be drawn from the float bowl through the fuel jets and into the airstream. As the fuel is introduced into the rapidly moving air, it undergoes atomization, which means it is broken into fine droplets.

This atomization is essential for ensuring that the fuel mixes efficiently with the air, facilitating better combustion within the engine. Proper fuel atomization leads to improved engine performance and efficiency, as it allows for a more homogeneous mixture that can burn effectively. Other components, such as the idle jet and mixture control, serve different functions in the carburetor and do not primarily handle the atomization process. The float bowl, while vital for maintaining a consistent fuel supply, does not contribute directly to the atomization itself.