What is one of the primary functions of the fuel pump in an injection system?

The primary function of the fuel pump in an injection system is to deliver fuel to the injectors at the proper pressure. This is essential for the efficient operation of the engine, as fuel injectors require a specific pressure to ensure an optimal spray pattern and precise fuel delivery. If the fuel pump does not maintain the correct pressure, it can lead to poor engine performance, misfires, or failure to start.

The fuel pump continuously supplies fuel from the fuel tank to the injectors during engine operation, ensuring that the combustion process has the right amount of fuel needed to match the engine demands. Proper fuel delivery directly influences engine efficiency, power output, and emissions. By maintaining the correct pressure, the fuel pump plays a critical role in ensuring that the fuel-air mixture is ideal for combustion, thus optimizing engine performance.