Where is the high-pressure fuel pump located in the engine?

[StJake]

The high-pressure fuel pump is located on top of the engine and is typically driven by the camshaft. In most direct-injection engines, you can see the high-pressure fuel pump on top of the engine after opening the hood. The high-pressure fuel pump pressurizes the gasoline delivered by the electric fuel pump, ensuring that the injectors in the cylinders can spray the fuel effectively. Direct-injection engines require very high injection pressure because the pressure inside the engine cylinders is already very high. Without sufficient injection pressure, the fuel cannot be properly injected. The higher injection pressure in direct-injection engines ensures more thorough fuel atomization, allowing for better mixing of air and fuel.