Fuel Injection Pump Working Principle - Animation -

: As the plunger reaches the bottom of its stroke, fuel from the supply tank floods the barrel through inlet ports .

If you'd like to explore a specific part of the system further, I can help you with: A deeper look at the and how it meters fuel. Comparing mechanical governors vs. electronic ECU control. Fuel Injection pump working principle - Animation

: When you press the accelerator, a control rack rotates the plunger. This changes the position of the helix, determining how long the spill port stays covered and, consequently, how much fuel is delivered to the cylinder. Common Pump Types in Animations : As the plunger reaches the bottom of