Patent ID: 7891344
Filing Date: 2011-02-22
Classification: F02B,F02M,Y10T

Abstract:
1. A fuel tank comprising: a tank body arranged to store fuel therein, the tank body including a fuel inlet extending upwardly from a top surface of the tank body and a cylindrical member extending downwardly from the fuel inlet; a fuel cap arranged to be removably installed onto a top of the fuel inlet; and a discharge member including a discharge passage in communication with a canister arranged to adsorb fuel vapor from the tank body; wherein the cylindrical member includes a lower end portion and an upper end portion, the lower end portion arranged lower than the top surface of the tank body and projecting downwardly in the fuel inlet, the upper end portion including a communicating passage arranged to bring an inside of the cylindrical member into communication with an outside of the cylindrical member, an outer circumferential surface of the upper end portion and an inner circumferential surface of the fuel inlet defining a space therebetween maintained in a hermetically sealed state, the communicating passage being arranged lower than the hermetically sealed space and to extend substantially vertically; the discharge member includes an opening on the inside of the cylindrical member at a position higher than the lower end portion of the cylindrical member; and the communicating passage is arranged, during fueling of the fuel tank, to allow air to escape from the tank body into the fuel inlet.