Patent ID: 6848425

Claim:
A fuel-injection system for an internal combustion engine, comprising: a fuel injector configured to inject fuel into a combustion chamber, the fuel injector configured to be inserted in a receiving bore of a cylinder head of the internal combustion engine and having a discharge-side end; a seal for sealing the fuel injector from the combustion chamber; spray-discharge orifices; and a flame-proofing screen for shielding the spray-discharge orifices from the combustion chamber, the flame-proofing screen being arranged one of: i) at the discharge-side end of the fuel injector, and ii) on a wall of the receiving bore; wherein the flame-proofing screen has one of a multi-step cone shape and a multi-step truncated cone shape; and wherein the flame-proofing screen includes a projection and region adjoining the projection so that a first tilting angle formed between the projection and the wall of the receiving bore is smaller than a second tilting angle formed between the region and the wall.