Device for controlling evaporative emission from a fuel tank

An apparatus for treating evaporative fuel used by an internal combustion engine, comprising:

• a fuel tank;
• a partitioning wall provided within the fuel tank to define a small fuel storage chamber within the tank;
• a canister container housed in the small fuel storage chamber;
• fuel adsorbing material stored within the canister;
• and
• a single fuel feeding pipe for feeding fuel into the small fuel storage chamber and introducing the high temperature return fuel into the small fuel storage chamber, thereby promoting an adsorbing and de-adsorbing action of fuel by the fuel adsorbing material.

An apparatus for treating evaporative fuel in an internal combustion engine vehicle comprising:

• a fuel tank for storing fuel therein;
• means for defining a small fuel storage chamber within the fuel tank;
• a canister container housed in the small fuel storage chamber;
• a fuel adsorbing material stored in the canister container;
• means for defining a fuel pump-up chamber;
• a fuel pump for pumping-up fuel to the engine, the fuel pump having a strainer housed within the fuel pump-up chamber;
• and
• an opening and closing means which communicates the small fuel storage chamber with the fuel pump-up chamber, fuel being introduced into the fuel tank flowing into the small fuel storage chamber to cool the canister container to promote adsorbing action of the adsorbing material, high temperature return fuel being introduced into the small storage chamber, when the internal combustion engine is operated, to heat the canister container thereby promoting de-adsorbing action of the adsorbing material, a predetermined amount of fuel being retained in the small fuel storage chamber such that when fuel in the fuel pump-up chamber decreases, the opening and closing means opens to allow fuel in the small fuel storage chamber to flow into the fuel pump-up chamber.