: Features individual plunger units for each engine cylinder, common in larger diesel engines.
: Uses a single pumping element and a rotor to distribute fuel to all cylinders in sequence, typically found in smaller vehicles. Fuel Injection pump working principle - Animation
: Driven by the engine's camshaft, the plunger moves upward. Once it covers the barrel ports, the trapped fuel begins to compress. : Features individual plunger units for each engine
: In modern systems, an Electronic Control Unit (ECU) uses signals to trigger high-pressure solenoid valves , replacing the mechanical rack and governor for more precise control. Once it covers the barrel ports, the trapped
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.
: 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
Watch these animations to see how different fuel injection pump types, such as inline and distributor models, move and meter fuel in real-time: Fuel injection pump animation YouTube · MECHANICAL ENGINEERING WORLD