| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a structure for improving cooling performance of a driving motor unit. <P>SOLUTION: The cooling structure includes an engine E equipped with a rotary shaft 41; and an air-cooling device having a throttle valve 63 which is arranged above the engine E and adjusts the air intake quantity, and intake air passages 57, 58, 60 for connecting the engine E and an air cleaner 59, a driving motor unit 65 for opening/closing the throttle valve 63, a fan 67 supported by the rotary shaft 41, and a duct 68 for introducing the cooling air by the fan 67 to a predetermined location of the engine E. The duct 68 includes a cooling opening 80a for opening toward the driving motor unit 65. <P>COPYRIGHT: (C)2013,JPO&INPIT |
