Patent ID: 6454621
Filing Date: 2002-09-24
Classification: B63B,B63H,F01P,F02B,F02M,Y02T

Abstract:
A circulating fuel supply apparatus for an engine of a small watercraft, adapted to supply a fuel in a fuel tank to an injector through a fuel supply pipe using a fuel pump, and returning excess fuel in the injector to the fuel tank through a fuel return pipe, comprising a fuel cooling device provided in the portion of the fuel supply pipe which is between the fuel pump and the injector, wherein a heat exchanger using a cooling water is provided as the fuel cooling device and an external cooling water, taken in from outside by a water jet propulsion unit provided in a hull of the small watercraft, is used as the cooling water for the heat exchanger and the cooling water which has been used to cool the fuel is discharged to the outside of the small watercraft.