COOLING STRUCTURE FOR RADIATOR FOR WATER-COOLED POWER UNIT

摘要

A water-cooled power unit structure for a small-sized vehicle having a radiator (67) mounted on an outer side face in the left-right direction of a vehicle body of a vehicle, wherein the structure is configured to enhance the cooling ability of an internal combustion engine (16) by utilizing relative airflow.  The radiator (67) is provided with a radiator cover (68) equipped with a louver unit (69) for guiding cooling air to the radiator (67).  The rear portion of the radiator cover (68) is mounted projecting outward laterally from the front portion of the radiator cover (68).  The louver unit (69) formed on the radiator cover (68) is composed of blade plates (69a) which are, in a side view of the vehicle, arranged parallel to each other in a forwardly tilting position.  A lower vehicle body cover (13A) has formed therein a cooling air guide hole (70) for guiding relative airflow toward the louver unit (69) located rearward and obliquely upward of the lower vehicle body cover (13A).