Which part of the carburetor is responsible for mixing fuel and air?

The Venturi is the part of the carburetor that plays a crucial role in mixing fuel and air. It is designed as a narrow passage that accelerates the airflow as it passes through. According to Bernoulli's principle, as the speed of the air increases, the pressure decreases, creating a vacuum in the Venturi. This vacuum draws fuel from the main jet into the incoming airstream. The mixing of fuel and air in this area is essential for proper combustion in the engine, as it ensures the right fuel-to-air ratio is achieved for optimal performance.

The Throttle valve, while important for controlling the amount of air-fuel mixture entering the engine, does not directly mix fuel and air. Rather, it regulates the flow based on the position, affecting engine speed and power. The Float chamber is responsible for maintaining a constant supply of fuel to the carburetor, ensuring that there is always enough fuel available but does not mix it with air. The Main jet, on the other hand, is the component that supplies the fuel into the Venturi; it lets fuel enter but is not involved in the mixing process itself. The Venturi, therefore, is the key component for achieving the desired aerosolization of fuel for efficient combustion