High pressure pump for fuel injector of internal combustion engine, has pump element, where spring element is designed as compression spring supported at pump piston or at plunger

摘要

The high pressure pump has a pump element, where a spring element (8) is designed as a compression spring supported at a pump piston (3) or at a plunger (4). The pump piston or the plunger is applied with a pressurizing force in a torsion-free manner. The spring element has a hollow cylindrical shape with a wavy or folded outer contour.