Distributor injection pump

Unlike inline injection pumps which pump fuel to each cylinder, distributor injection pumps sequentially distribute and pump fuel to all cylinders with one or a set of plungers, regardless of the number of engine cylinders.
■ A set of plungers (two) that generate high-pressure fuel is built into the rotor of the high-pressure generator. During one revolution along the cam ring, these plungers operate reciprocally a number of times equivalent the number of engine cylinders, taking turns sucking fuel and pumping it to each nozzle.

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