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 .

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The difference between and indirect injection nozzles. : As the plunger reaches the bottom of

: Features individual plunger units for each engine cylinder, common in larger diesel engines. typically found in smaller vehicles.

: Uses a single pumping element and a rotor to distribute fuel to all cylinders in sequence, typically found in smaller vehicles.