초록 ▼

A fuel injector for the direct injection of fuel into the combustion chamber of a mixture-compressing internal combustion engine having external ignition includes a valve housing formed by a nozzle body, and a seal which seals the fuel injector from a cylinder head of the internal combustion engine.

A fuel injector for the direct injection of fuel into the combustion chamber of a mixture-compressing internal combustion engine having external ignition includes a valve housing formed by a nozzle body, and a seal which seals the fuel injector from a cylinder head of the internal combustion engine. The seal has a sleeve-type design with a structured cross section and extends across the axial length of the nozzle body.

대표청구항 ▼

What is claimed is: 1. A fuel injector for direct injection of fuel into a combustion chamber of a mixture-compressing internal combustion engine having external ignition, comprising: a nozzle body; a valve housing surrounding the nozzle body; and a seal which seals at least the nozzle body from a

What is claimed is: 1. A fuel injector for direct injection of fuel into a combustion chamber of a mixture-compressing internal combustion engine having external ignition, comprising: a nozzle body; a valve housing surrounding the nozzle body; and a seal which seals at least the nozzle body from a cylinder head of the internal combustion engine, wherein the seal has a sleeve-type design with a structured cross section, wherein the seal extends across the axial length of the nozzle body, and wherein the seal directly contacts both the nozzle body and a receiving bore of the cylinder head in order to achieve a reliable sealing effect and effective heat dissipation from the nozzle body. 2. The fuel injector as recited in claim 1, wherein the seal is in the form of a corrugated tube. 3. The fuel injector as recited in claim 1, wherein the seal is in the form of a tube having protrusions. 4. The fuel injector as recited in claim 3, wherein the protrusions have a semicircular cross section. 5. The fuel injector as recited in claim 1, wherein the seal is pleated in the shape of expansion bellows. 6. The fuel injector as recited in claim 1, wherein the seal includes a plurality of layers. 7. The fuel injector as recited in claim 6, wherein the seal includes a cover plate on a discharge-side end of the nozzle body. 8. The fuel injector as recited in claim 7, wherein the cover plate has at least one opening. 9. The fuel injector as recited in claim 8, wherein the opening of the cover plate facilitates passage of fuel jets injected into the combustion chamber. 10. The fuel injector as recited in claim 8, wherein the cover plate includes a plurality of spray-discharge orifices. 11. The fuel injector as recited in claim 8, wherein the seal is produced from a metal foil having a smooth surface, the metal foil produced from a metallic material having an amorphous structure. 12. The fuel injector as recited in claim 2, wherein a plurality of cavities is formed one of: a) between the seal and the nozzle body; and b) between the seal and the cylinder head, and wherein the cavities are configured to channel a flow of coolant.