Abstract: 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.

Abstract: An internal combustion engine, especially an Otto engine, with intake valves and with a fuel injector, which is arranged and designed so that it injects the fuel directly into a combustion chamber of working cylinders of the internal combustion engine. At least in the region of the neck, the intake valves have a surface that is designed to counteract the formation of carbon deposits.

Abstract: The invention relates to an internal combustion engine (10) with at least one combustion chamber (16) enclosed by a cylinder (12) and a piston (14) arranged to move therein. A surface of at least one component of the combustion chamber (16) and/or an adjacent chamber, which comes into contact with the air/fuel mixture for combustion or with motor oil, is provided at least partly with a catalytic coating for oxidation of coking residues.

Abstract: The invention concerns an internal combustion engine, especially an Otto engine, with intake valves (20) and with a fuel injector (40), which is arranged and designed in such a way that it injects the fuel (42) directly into a combustion chamber (16) of working cylinders (14) of the internal combustion engine. At least in the region of the neck (68), the intake valves (20) have a surface that is designed in such a way that it counteracts the formation of carbon deposits.

Abstract: This invention concerns an internal combustion engine, especially an Otto engine, especially of a motor vehicle, with a fuel injector (40), which is arranged and designed in such a way that it injects the fuel (42) directly into a combustion chamber (16) of working cylinders (14) of the internal combustion engine, and with at least one intake valve unit per working cylinder (14), which comprises an intake valve and an intake valve seat. In this regard, at least one intake valve unit is designed with means that hinder heat dissipation in such a way that increased surface temperatures of more than 380° C. develop in the area of the neck (68) of the intake valve (20) in at least one predetermined region (112) of the load-speed characteristic diagram.