CPC F02M 59/442 (2013.01) [F02M 59/02 (2013.01)] | 18 Claims |
1. A fuel pump comprising:
a barrel including a bore;
a plunger movable inside the bore, the plunger having a proximal end and a distal end, the proximal end including a cavity that defines a depressed volume within the plunger; and
a volume filler disposed in the cavity, the volume filler being constrained in the cavity by a retaining element, wherein the volume filler includes a passage that extends along an entire axial length of the volume filler.
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