| 摘要 |
PROBLEM TO BE SOLVED: To provide an engine capable of reducing noise emitted from a pulley while preventing complication of a pulley structure. SOLUTION: The engine is provided with the pulley fixed to a crankshaft via a hub 141. In the pulley, with respect to a crank pin 22A, which is positioned in the closest vicinity of the pulley among crank pins arranged biased with respect to the rotational axis of the crankshaft, rigidity of the parts positioned on the both sides of the hub 141 in the biased direction is set to be higher than rigidity of the parts positioned on the both sides of the hub 141 in the direction (the direction L in Fig.7) orthogonal to both of the biased direction (the direction H in the figure 7) and the rotation axis direction (the direction W in Fig.7) of the crankshaft. COPYRIGHT: (C)2008,JPO&INPIT
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