Patent ID: 6209627
Filing Date: 2001-04-03
Classification: F01P,F02B,F04D

Abstract:
A cooling device for a motorcycle radiator comprising:a cooling fan having an impeller being positioned at a cooling air outlet of the radiator;a cylindrical shroud surrounding the impeller of the cooling fan;said cylindrical shroud having an inlet and an outlet formed in the shape of a bell mouth;said bell mouth shaped inlet being positioned near the rear surface of the radiator with a clearance maintained therebetween;a space communicating with said clearance is formed inside said inlet, said space being located between said impeller and said radiator and opening around the shroud through said clearance; andwherein a difference between a maximum diameter and a minimum diameter of the bell mouth shaped outlet of the shroud and a length of the shroud is in the ratio of 1:3 to 5.