Patent ID: 7114598
Filing Date: 2006-10-03
Classification: B60K,B60T,F16D

Abstract:
1. A power unit for rear wheels of a four-wheeled vehicle, the power unit comprising: a gear transmission for the rear wheels; an automatic V-belt transmission for providing power from an engine to the gear transmission; a final reduction gear having an input shaft connected to the gear transmission via a propeller shaft; a brake device for the rear wheels mounted to the input shaft of the final reduction gear; a belt cover having an air inlet hole and an air discharging hole covering the automatic V-belt transmission, the air inlet hole for receiving air to cool the automatic V-belt transmission and the air discharging hole for outputting the air from the belt cover; and an air discharging duct connected to the belt cover such that the air discharging duct communicates with the air discharging hole, the air discharging duct having an outlet part for discharging air, wherein the air discharging duct extends to a vicinity of the brake device so as to discharge air from the outlet part toward the brake device.