Patent ID: 6991179

Claim:
A fuel injector for internal combustion engines, operated with diesel or heavy fuel as injection medium, comprising: a control valve arranged upstream of a main flow valve, and a control chamber having a changeable volume and a limit stop for a displaceable control piston guided in a bore in a direction of a front wall of the control chamber, said control chamber lying between a throttled inlet and a throttled outlet with cross sections opening to the control chamber, wherein one of said throttled inlet and said throttled outlet lies on a front wall side overlapping a front side of the control piston, and the other one of said throttled inlet and said throttled outlet lies radially outside of a front-side contour of the control piston, and wherein the limit stop for the control piston acts between a peripheral zone of the front side of the control piston and the front wall of the control chamber, forms a throttled position between the inlet and the outlet and encloses a gap that remains between the front wall and the control piston at which the inlet ends.