Patent ID: 6957542

Claim:
A fuel tank system for a vehicle comprising: a fuel tank inner shell which accommodates fuel; a fuel tank outer shell disposed outside the inner shell, defining a space between the fuel tank outer shell and the fuel tank inner shell; a heat insulation material provided on the fuel tank outer shell; flow means for causing a coolant to flow through the space to reduce a temperature of the fuel in the fuel tank inner shell, said flow means comprising a coolant inlet and a coolant outlet; a fuel passage with an end provided in the fuel tank inner shell; a canister storing vapor flowing out of the fuel tank inner shell; a fuel filling pipe connected with the fuel tank inner shell for supplying fuel to the fuel tank inner shell from a source that is provided outside the vehicle; and a pump associated with the fuel passage for delivering the fuel from the inner shell to the vehicle engine; wherein the flow means includes a first communication member by which the space communicates with the canister, said first communication member being connected to said coolant outlet; and wherein the flow means includes a second communication member by which the canister communicates with the space through an air cleaner.