Patent ID: 7387102

Claim:
A cast part for an internal combustion engine, the part being a cylinder crankcase ( 1 ), which has at least one guide duct ( 5 , 5 d ), which leads a fluid medium to a required location, the duct being implemented in the form of a tube and being embedded inside the part when the latter is cast, the fluid medium being oil and the at least one guide duct ( 5 , 5 d ) being an oil supply line to a crankshaft bearing ( 2 ) and/or camshaft bearing ( 3 ) to be lubricated as the required location, wherein the cylinder crankcase ( 1 ) comprises multiple embedded guide ducts ( 5 , 5 d ) which are each introduced as an individual connection tube ( 7 ) for guiding the medium, the connection tubes ( 7 ) being each bent and each having a bend ( 8 ) from which one section ( 7 a ) runs to a crankshaft bearing ( 2 ) and another section ( 7 b ) runs to a camshaft bearing ( 3 ), the bends ( 8 ) of the embedded connection tubes ( 7 ) each being located at positions at which a main oil duct ( 4 ) subsequently introduced through drilling runs, so that by introducing the main oil duct ( 4 ), the connection tubes ( 7 ) are drilled through and a connection of a connection tube ( 7 ) to the main oil duct ( 4 ) is thus produced in each case.