Abstract: A fuel tank connector for connecting a fuel tank and a pipe in communicating fashion includes a gas barrier member made of a synthetic resin and having a gas barrier property. The gas barrier member includes a tubular portion and a flanged portion provided on a peripheral side of the tubular portion, which extends beyond an opening of the fuel tank. The gas barrier member is made of a liquid crystal polymer, aromatic polyamide, a blended polymer of an ethylene-vinyl alcohol copolymer and high-density polyethylene, a blended polymer of polyamide and polyethylene, or a blended polymer of polyamide and high-density polyethylene.

Abstract: A fuel tank connector for connecting a fuel tank and a pipe in communicating fashion includes a gas barrier member made of a synthetic resin and having a gas barrier property. The gas barrier member includes a tubular portion and a flanged portion provided on a peripheral side of the tubular portion, which extends beyond an opening of the fuel tank. The gas barrier member is made of a liquid crystal polymer, aromatic polyamide, a blended polymer of an ethylene-vinyl alcohol copolymer and high-density polyethylene, a blended polymer of polyamide and polyethylene, or a blended polymer of polyamide and high-density polyethylene.

Abstract: A ventilation-side floating valve 40 is provided for a fuel tank divided into a main tank part and a sub-tank part through a swelling part. The valve 40 includes an upper casing part 41 in which a float 46, a spring 47 and a retainer 48 are accommodated and a lower casing part 42. In arrangement of the valve 40, the upper casing part 41 is arranged on a central-upper part of the fuel tank above the swelling part. The lower casing part 42 is bent avoid the swelling part.

Abstract: A tubular resin contains small animal repelling chemical. And canister structure installed in an automobile comprises the above tubular resin on the inner wall of an air inlet port portion of a drain pipe. The canister structure absorbs evaporated fuel from a fuel tank by a absorbent in a main body of a canister and then supplies desorbed fuel from the adsorbent together with the air sucked from the drain pipe to an engine side. The tubular resin prevents entering of a small animal into the drain pipe and also building of its nest.

Abstract: An evaporative emission control apparatus for a motor vehicle includes a fuel tank having a tank shell to store fuel therein, a canister disposed completely within the fuel tank to adsorb and temporarily store evaporative fuel generated in the fuel tank, and a bracket that is secured to the fuel tank to support the canister apart from the tank shell. The outer surface of the canister is set apart from the inner surface of the tank shell, so that the canister is less influenced by the environment temperature around the fuel tank, and so that the adsorption of the evaporative fuel is kept stable.

Abstract: A leak diagnostic device is provided to detect leaks at any parts of an in-tank canister system. The three-way control valve 30 may be switched while the purge control valve 24 remaining open to negatively pressurize the interior of the fuel tank 1 while the interior of the canister 2 being maintained at about atmospheric pressure. Upon negatively pressurizing the interior of the fuel tank 1, the purge control valve 24 is closed, and then leaks are checked based on a change in the negative pressure within the fuel tank 1.

Abstract: A ventilation-side floating valve 40 is provided for a fuel tank divided into a main tank part and a sub-tank part through a swelling part. The valve 40 includes an upper casing part 41 in which a float 46, a spring 47 and a retainer 48 are accommodated and a lower casing part 42. In arrangement of the valve 40, the upper casing part 41 is arranged on a central-upper part of the fuel tank above the swelling part. The lower casing part 42 is bent avoid the swelling part.

Abstract: An evaporative emission control apparatus for a motor vehicle includes a fuel tank having a tank shell to store fuel therein, a canister disposed completely within the fuel tank to adsorb and temporarily store evaporative fuel generated in the fuel tank, and a bracket that is secured to the fuel tank to support the canister apart from the tank shell. The outer surface of the canister is set apart from the inner surface of the tank shell, so that the canister is less influenced by the environment temperature around the fuel tank, and so that the adsorption of the evaporative fuel is kept stable.

Abstract: A reservoir arrangement for use in an automotive fuel tank includes a reservoir body in which fuel is guided and from which fuel is pumped. The reservoir body defines a fuel passage by upwardly depressing its bottom surface and fittingly engaged the depressed surface with a chamber plate. The chamber plate is made of a material whose swelling amount by fuel is larger than that of the reservoir body, thereby causing a tight fit of the chamber plate.

Abstract: A reservoir in which fuel can be collected when only a small amount of fuel remains in the fuel tank, is arranged to support a fuel pump and to be connectable to the lower wall of the tank by a snap action type connector arrangement which is defined between a bracket fixed to the lower wall of the fuel tank and a portion of the reservoir which cooperates with the bracket. The reservoir containing the pump can be manually introduced into the interior of the fuel tank through an opening in the top thereof and maneuvered into engagement with the bracket. The center of gravity of the relatively heavy pump is arranged to be generally over the top of the bracket. When a predetermined strong force is applied to the reservoir in a predetermined manner it can disengage from the bracket.

Abstract: In a fuel tank structure for an automotive vehicle, a fuel collector unit includes a collector body which is provided with a fuel collecting chamber and a fuel passage. The fuel passage has an inlet adjacent to a bottom wall of a tank body and an outlet opening toward the fuel collecting chamber for conducting fuel in the tank body into the fuel collecting chamber. The fuel passage is arranged such that the fuel below a predetermined vertical level at a certain location in the fuel passage is prevented from flowing out through the inlet. The fuel collector unit further includes an ejector which ejects oversupplied return fuel into the fuel passage through the inlet so as to suck the fuel therearound. The sucked fuel is mixed with the ejected return fuel and introduced into the fuel passage through the inlet.

Abstract: A fuel supply system including a fuel tank, a feed conduit through which fuel is pumped from the fuel tank, and a return conduit through which excess fuel is returned to the fuel tank. The fuel tank has first and second sumps. The system comprises an ejector pump having a pressure chamber opening through a throat into the first sump. The pressure chamber is connected through a communication conduit to the second sump. The ejector pump includes a fuel nozzle having an inlet port connected to the return conduit and a discharge end opening into the pressure chamber for discharging a jet of fuel into the pressure chamber to create a negative pressure in the pressure chamber so as to suck fuel through the communication conduit from the second sump. In one aspect of the invention, a relief valve is provided which is responsive to a back pressure produced in the fuel nozzle for relieving the back pressure to the first sump when the back pressure exceeds a predetermined value.