| 摘要 |
<p>Disclosed is a cooling mechanism for cooling a belt-based speed-change system (6) of an engine. The engine has a crankshaft (41) for output of power, and the crankshaft has an end coupled to a power generator (42) and an opposite end extending into a transmission box (5) and coupled to the belt-based speed-change system. A wet-type clutch (43) is arranged between the belt-based speed-change system and the engine. The wet-type clutch has a clutch cover separating the clutch from the belt-based speed-change system. The transmission box forms an air inlet (51) and an air outlet (52) on front and rear sides thereof, respectively. An air guide chamber (53) is formed inside the transmission box and defines an air collection chamber communicating with the air inlet. The clutch cover (44) is mounted to and covers the air guide chamber and defines openings in communication with the air collection chamber. An air guide lid (7) is arranged between the belt-based speed-change system and the clutch cover, and forms an air intake opening corresponding in position to a drive disk (61) of the belt-based speed-change system. The cooling mechanism allows external air entering the transmission box to be effectively and efficiently guided through the transmission box and expelled through the air outlet for cooling the belt-based speed-change system with enhanced performance.</p> |
