초록 ▼

An internal combustion engine having a cylinder and a piston movable in the cylinder, the cylinder and piston defining a combustion chamber enclosed by the cylinder and the piston, a surface of at least one of at least one component of the combustion chamber and an adjoining space that comes into co

An internal combustion engine having a cylinder and a piston movable in the cylinder, the cylinder and piston defining a combustion chamber enclosed by the cylinder and the piston, a surface of at least one of at least one component of the combustion chamber and an adjoining space that comes into contact with at least one of a fuel-air mixture to be combusted and with motor oil has, at least in certain areas, a catalytic coating for oxidizing carbonization residues, the coating consists of a ternary vanadium oxide compound and at least one other compound of at least one metal oxide, the metal oxide is at least one of the group consisting of a cerium oxide, an oxide of another rare-earth metal, an oxide of lanthanum (La), and an oxide of a transition metal.

대표청구항 ▼

1. An internal combustion engine, comprising a cylinder and a piston movable in the cylinder, the cylinder and piston defining a combustion chamber enclosed by the cylinder and the piston, a surface of at least one of at least one component of the combustion chamber and an adjoining space that comes

1. An internal combustion engine, comprising a cylinder and a piston movable in the cylinder, the cylinder and piston defining a combustion chamber enclosed by the cylinder and the piston, a surface of at least one of at least one component of the combustion chamber and an adjoining space that comes into contact with at least one of a fuel-air mixture and with motor oil is at least partially coated with a catalytic coating for oxidizing carbonization residues, the coating consists of a ternary vanadium oxide compound and at least one other compound of at least one metal oxide, the metal oxide is at least one of the group consisting of a cerium oxide, an oxide of another rare-earth metal, an oxide of lanthanum (La), and an oxide of a transition metal.2. An internal combustion engine in accordance with claim 1, wherein the ternary vanadium oxide compound is one of vanadium oxynitride with a composition V2O5?xNx and vanadium oxycarbide with a composition V2O5?xCx wherein 0?x?1.3. An internal combustion engine in accordance with claim 1, wherein the cerium oxide is cerium dioxide (CeO2).4. An internal combustion engine in accordance with claim 1, wherein the transition metal belongs to at least one of the iron group, the platinum group, the copper group, and the zinc group.5. An internal combustion engine in accordance with claim 1, wherein the at least one component is at least one of an intake valve, an exhaust valve, an intake port, an exhaust port, an injection valve, the piston, and the cylinder.6. An internal combustion engine in accordance with claim 5, wherein the surface is at least one of a valve surface of at least one of an intake valve and an exhaust valve, an inside wall of at least one of an intake port and an exhaust port, an injection nozzle of the injection valve, a piston head, a piston working surface of the piston, a cylinder working surface, and an upper surface of the combustion chamber of the cylinder.7. An internal combustion engine in accordance with claim 1, wherein the internal combustion engine has direct fuel injection by which fuel can be injected directly into the combustion chamber.8. An internal combustion engine in accordance with claim 7, wherein the coating is applied one of by arc vaporization of one of a target made of vanadium and a target made of an alloy of vanadium and the metal of at least one other metal oxide, and by successive arc vaporization of a target made of vanadium and a target made of the metal(s) of the at least one metal oxides in the presence of oxygen.9. An internal combustion engine in accordance with claim 1, wherein the coating is applied to the surface by at least one of a plasma-supported vacuum process and an ion-supported vacuum process.10. An internal combustion engine in accordance with claim 1, wherein the coating is applied to the surface by application of a vanadium compound followed by thermal oxidation in the presence of oxygen.11. An internal combustion engine in accordance with claim 10, wherein the vanadium compound is one of vanadium nitride and vanadium carbide.12. An internal combustion engine in accordance with claim 1, wherein the at lest one metal oxide is introduced into the coating by applying a metal salt solution to the coating of the ternary vanadium oxide compound, followed by thermal oxidation in the presence of oxygen.13. An internal combustion engine in accordance with claim 1, wherein the coating is applied to the surface by applying a gel and then using a pyrolysis process.14. An internal combustion engine in accordance with claim 13, wherein the gel consists of vanadium isopropoxide and a cerium alcoholate.15. An internal combustion engine in accordance with claim 14, wherein polyethylene glycol is added to the gel.16. An internal combustion engine in accordance with claim 15, wherein the gel applied to the desired surfaces is subjected to a pyrolysis process at a temperature of about 400-500° C.