Abstract: A method produces a cast component of an internal combustion engine with a cast-in pipe. Expendable molds and a permanent pattern, or permanent molds are used in the method. A solid core mold is mounted in a split outer mold. To solve the problem of the pipe changing its position during the casting of the component, a separate pipe holder is integrated into the outer mold or the core mold. The pipe is inserted into a retaining section of the pipe holder that is configured in such a manner that it locally surrounds the outer circumference of the pipe at least in part and with little play so that the pipe can expand in the axial direction during casting but is secured against displacements in radial directions caused by buoyancy forces of the liquid casting material. Subsequently the component is cast.

Abstract: The invention relates to a method for producing a cast component 1 of an internal combustion engine with a cast-in pipe 3 in a casting process with expendable moulds and a permanent pattern or in a casting process with permanent moulds in which a solid core mould 4 is mounted in a split outer mould. To solve the problem of the pipe changing its position during the casting of the component 1, it is proposed according to the invention that a separat pipe holder 5 is integrated into the outer mould or the core mould 4. The pipe 3 is inserted into a retaining section 6 of the pipe holder 5 that is configured in such a manner that it locally surrounds the outer circumference 8 of the pipe 3 at least in part and with little play so that the pipe 3 can expand in the axial direction during casting but is secured against displacements in radial directions caused by buoyancy forces of the liquid casting material. Subsequently the component 1 is cast by the respective method.

Abstract: The invention relates to a cast part for an internal combustion engine, said part being a cylinder crankcase, which has at least one guide duct that leads a fluid medium to a required location. Said guide duct is provided in the form of a tube and is embedded inside the part when the latter is cast. The aim of the invention is to reduce the complexity of production and the costs of the cylinder crankcase. To this end, the fluid medium is provided in the form of oil and the at least one guide duct is provided in the form of an oil supply leading to a crankshaft bearing and/or to a camshaft bearing that are to be lubricated or to other required location.

Abstract: The invention relates to a cast part for an internal combustion engine, said part being a cylinder crankcase, which has at least one guide duct that leads a fluid medium to a required location. Said guide duct is provided in the form of a tube and is embedded inside the part when the latter is cast. The aim of the invention is to reduce the complexity of production and the costs of the cylinder crankcase. To this end, the fluid medium is provided in the form of oil and the at least one guide duct is provided in the form of an oil supply leading to a crankshaft bearing and/or to a camshaft bearing that are to be lubricated or to other required location.

Abstract: A core is formed and a prefabricated bearing bore is provided. Two separate projections are provided on the core wherein free projection edges of the two separate projections have a respective shaping radius between R=0.sub.mm and R.ltoreq.0.45.sub.mm. Subsequently indentations are produced in a circumferential area of the bearing bore by the two separate projections on the core wherein the indentations serve as fracture notches. The cast engine part is then formed by casting metal around the core using said fraction notches as incipient crack sites.

Abstract: An engine power section for piston engines, particularly V-engines, having a power unit block made of an iron material arranged in a casing of light metal. In order to achieve a stiff weight-reducing power unit block, a flange plate used for limiting the crank space as well as for the connection with the casing is arranged offset relative to a cylinder from its lower end toward its upper end with its front side surface center of gravity at a distance on this side of the bearing center plane of a crankshaft bearing, which corresponds at least to a largest possible distance of the surface center of gravity of a reinforcing profile of a bearing frame on the other side of the bearing center plane. The crankshaft bearings are connected with the flange plate by way of struts.

Abstract: A mold for casting cylinder blocks of combustion engines in an upright position includes a cope and a barrel core located therewith for defining a cylinder bore. A drag defines a crank space and is configured for cooperating with the cope to define a cylinder block such that the drag and cope can be stripped in an axial direction with respect to the cylinder bore.