PROBLEM TO BE SOLVED: To provide the oil passage structure of an assembled crankshaft for an engine which dispenses with alignment of an oil passage in assembling the crankshaft and boring after assembly and enables centrifugal separation of foreign matters from passing oil.;SOLUTION: A crankpin 5p is formed in hollow shape and provided with an oil feeding hole 38 bored to communicate a hollow part 36 with the outer peripheral surface of the crankpin 5p. One journal part 5b is provided with an oil hole 35 bored to communicate with an oil supply source and opened adjoining one end face of a crank part 5c. A delivery tray 37 for delivering oil to the hollow part 36 from the oil hole 35 is mounted to one end part of the crank part 5c, and a foreign matter sump 40 for holding the foreign matters centrifugally separated from the oil in the delivery tray 37 during the rotation of the crankshaft 5 is provided in the delivery tray 37.;COPYRIGHT: (C)2004,JPO
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