| 摘要 |
PROBLEM TO BE SOLVED: To provide a built-up crankshaft of a multi-cylinder engine capable of reducing the number of part items and shortening the total length. SOLUTION: In this built-up crankshaft of the multi-cylinder engine, a first crankshaft 10 where a first journal part 11, a first crank web part 12 and a first crank pin part 13 are integrally formed, and a second crankshaft 20 where a second journal part 21, a second crank web part 22 and a second crank pin part 23 are integrally formed are disposed so that the first crank pin part 13 side of the first crank web part 12 and the second crank pin part 23 side of the second crank web part 22 are opposite to each other, and the shaft centers of the first journal part 11 and the second journal part 21 are positioned on the same rotating shaft center line. The first crank pin part 13 and the second crank pin part 23 are connected to each other by a joint 30.
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