| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a power unit for a vehicle capable of suppressing deterioration of a transmission belt by increasing the cooling property of a movable sheave. <P>SOLUTION: In this power unit for the vehicle, an annular space b centered on a primary shaft is formed between an outer side face 49e positioned on the opposite side to a belt contact face 49d of the movable sheave 49 of a primary sheave 40 and a winding diameter variable mechanism 16, a partitioning member 76 for partitioning the space b into an air flow-in passage b1 and an air flow-out passage b2 in the axial direction is provided, many fins 49f extending in the radial direction are formed on the outer side face 49e of the movable sheave 49, and the partitioning member 76 is supported by the fins 49f. <P>COPYRIGHT: (C)2007,JPO&INPIT |
