How is the outlet fuel pressure regulated on a submerged, single-speed, centrifugal-type fuel pump?

In a submerged, single-speed, centrifugal-type fuel pump, the outlet fuel pressure is primarily regulated by the pump's design and internal clearances. This type of pump operates based on the principle of centrifugal force, which moves fuel through the impeller. The specific design characteristics such as the shape of the impeller, the speed at which it operates, and the internal clearances between various components play a crucial role in determining how much fuel can be pushed through and at what pressure.

The pressure generated by the pump is a function of these design elements, ensuring that it can deliver fuel to the engine effectively under varying operating conditions. This built-in mechanism means that no external regulator is necessary in many designs, as the pressure can be naturally managed through the pump's construction. While other components can influence fuel pressure in a broader system context, in a single-speed centrifugal pump, the internal configurations handle the regulation inherently.