| 摘要 |
PURPOSE: To improve cooling performance of a radiator by reducing an air resistance in running phase and also increasing a passing air flow quantity of the radiator by forming a laminator flow behind a vehicle in a motorcycle. CONSTITUTION: In a motorcycle 20, a pair of left and right duct parts 16a, 16a for guiding a radiator passing air flow to the front end of a tail cowl 14 and a pair of bellows-like left and right hose parts 16b, 16b are provided between a radiator 12 and the front end of the tail cowl 14, and a cavity part 18 connected to the rear end parts of the hose parts 16b, 16b by opening at both front and rear ends of the tail cowl 14, and discharging radiator passing air flow from the rear end opening 14b of the tail cowl 14 to the back side of a vehicle is formed in the tail cowl 14. |
