Why is creating pressure important in fuel injection systems?

Creating pressure in fuel injection systems is crucial because it generates the high pressure needed to force fuel into the combustion chamber. This high-pressure injection allows for precise atomization of the fuel, ensuring that it mixes effectively with air for efficient combustion. When the fuel is injected at a high pressure, it sprays fine droplets into the combustion chamber, which improves combustion efficiency, reduces emissions, and enhances overall engine performance.

The ability to achieve this high pressure is vital for modern engines, particularly in achieving the necessary fuel delivery rates and for meeting performance standards. It also helps ensure that fuel is injected at the optimal moment in the engine cycle, further contributing to efficient burning of the fuel mixture. This directly affects engine power output and can impact fuel economy positively.