What component in the turbocharger system limits airflow for cabin pressurization in a pressurized reciprocating aircraft?

In a turbocharged system for a pressurized reciprocating aircraft, the sonic venturi plays a crucial role in regulating airflow for cabin pressurization. This component is designed to create a controlled area where airflow is accelerated to supersonic speeds, which helps to maintain adequate cabin pressure at higher altitudes. By inducing a drop in pressure, the sonic venturi effectively limits the airflow necessary for cabin pressurization, ensuring that the cabin is adequately pressurized without overloading the system.

The importance of the sonic venturi stems from its ability to provide a stable and reliable means of controlling airflow, which is essential for maintaining comfort and safety within the cabin environment during flight. This regulation occurs regardless of the aircraft's altitude, making the sonic venturi a critical component in ensuring that the cabin pressure remains within safe limits. This contributes to both passenger comfort and aircraft performance during flight at varying altitudes.