How does the rotary distributor fuel injection pump supply fuel?

1 Answers
DiBraxton
07/30/25 9:00am
The fuel supply method of the rotary distributor fuel injection pump: During operation, clean diesel from the diesel filter enters the injection pump, where it is pressurized by the vane-type transfer pump (secondary pumping). The low-pressure diesel is then divided into two paths and enters the fuel chamber of the distributor pump. The diesel in the distributor pump is pressurized by the plunger, then flows through the central oil passage of the distributor plunger, distribution holes, delivery valve, and high-pressure fuel lines until it reaches the injector. The rotary distributor fuel injection pump is a type of plunger fuel injection pump. Its characteristic is that it uses a single set of plungers to pump fuel, with the pumped fuel directed to different cylinders via a rotating mechanism, ensuring balanced fuel supply to each cylinder. The main difference between the rotary distributor fuel injection pump and other types of plunger fuel injection pumps is that it uses one set of plungers to supply fuel to all cylinders, whereas other types of plunger fuel injection pumps use a separate set of plungers for each cylinder.
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