To prevent fuel from leaking to outside even when the fuel flows back at the time of an automatic stop operation during refueling. A fuel supply portion structure of a fuel supply pipe, including a tubular portion having a filler port and a connection port, a first flap mechanism which is provided on the filler port side of the tubular portion, a drain hole, and a drain hole on-off valve, wherein the drain hole on-off valve is disposed on a placement surface located at the lowermost side of a vehicle on an inner wall of a first inner diameter member, the placement surface is made of an inclined surface falling from the filler port side toward the connection port with respect to a horizontal plane of the vehicle, and a wall portion rising toward the filler port is provided on the filler port side of the inclined surface.

A vent system for a fuel storage tank and a pressure vacuum valve (PVV) module for use with such a vent system are disclosed. The vent system defines a vent path from the fuel storage tank to atmosphere. An elongate vent pipe extends vertically to a rain cap located at the upper end of the vent pipe. A pressure vacuum valve (PVV) is located in the vent path between the lower end of the vent pipe and the tank. The pressure vacuum valve maintains the vent path in a closed condition unless the pressure in the tank is above or below a predetermined pressure. By separating the PVV from the rain cap and placing it between the lower end of the vent pipe and the tank, it is possible to site the PVV at an accessible level for maintenance.

A Reduced Boil-off Thermal Conditioning System (RBTC System) for transferring liquid natural gas (LNG) from a LNG supply tank to a LNG storage tank with reduced boil-off is disclosed. The RBTC System includes the LNG storage tank, a cryogenic fluid tank within the LNG supply tank, and a compressor. The LNG storage tank includes a first and second LNG pipe. The cryogenic fluid tank is configured to store a cryogenic fluid within the cryogenic fluid tank and the first and second LNG pipe are in fluid communication with to the cryogenic fluid tank. The first LNG pipe is in fluid communication with compressor.

A canister includes a case having a fluid channel formed therein. In addition, the canister includes an adsorption chamber disposed in the fluid channel and containing an adsorbent. Further, the canister includes a filter disposed within the adsorption chamber and extending across an end portion of the adsorption chamber. The case may include a filter supporting portion facing the outer peripheral edge of the filter. The filter supporting portion may include fused portions to which the peripheral edge of the filter may be fusion-bonded and may also include non-fused portions to which the peripheral edge of the filter may not be fusion-bonded. The fused portions and the non-fused portions both may be disposed in an alternating manner in a lengthwise direction of the filter supporting portion about the filter supporting portion.

A canister includes a charge port, a purge port, an atmosphere port, a main chamber, a sub chamber, activated carbon, and more activated carbon. The charge port takes in evaporated fuel. The purge port discharges the evaporated fuel. The atmosphere port is open to the atmosphere. The charge port and the purge port are connected to the main chamber. The sub chamber communicates with the main chamber. The atmosphere port is connected to the sub chamber. The activated carbon is stored in a main volume (Vmain) in the main chamber. The more activated carbon is stored in a sub volume (Vsub) in the sub chamber. A ratio of a length L in a gas flow direction to an equivalent diameter D in a section perpendicular to the gas flow direction is 2 or more for the sub chamber. An activated carbon volume ratio (Vmain/Vsub) is 5.5 to 7.

A hose includes a fluorothermoplastic tube layer, a nitrile rubber friction layer disposed over the tube layer, a reinforcement layer disposed over the friction layer, the reinforcement layer comprising braided steel wire, and a cover layer disposed over the reinforcing layer, where the cover layer may comprise chlorinated polyethylene. The tube layer defines a lumen in the hose, and a vapor return line may further be disposed within the lumen of the hose. Hose embodiments of the disclosure may be useful in fueling applications for vehicles using fuels such as gasoline, gasohol, diesel, biodiesel, avgas or jet fuel.

Sorbent material sheets provide for enhanced performance in vapor adsorbing applications over conventional canisters and other emissions control equipment. The sorbent material sheets can be formed as part of a small, lightweight canister, or can be integrated into a fuel tank. The sorbent material sheets can also be used as part of an onboard refueling vapor recovery system to control volatile organic compound emissions from fuel tanks of gasoline vehicles, such as automobiles.

To prevent fuel from leaking to outside even when the fuel flows back at the time of an automatic stop operation during refueling. A fuel supply portion structure of a fuel supply pipe, including a tubular portion having a filler port and a connection port, a first flap mechanism which is provided on the filler port side of the tubular portion, a drain hole, and a drain hole on-off valve, wherein the drain hole on-off valve is disposed on a placement surface located at the lowermost side of a vehicle on an inner wall of a first inner diameter member, the placement surface is made of an inclined surface falling from the filler port side toward the connection port with respect to a horizontal plane of the vehicle, and a wall portion rising toward the filler port is provided on the filler port side of the inclined surface.

A vent system for a fuel storage tank and a pressure vacuum valve (PVV) module for use with such a vent system are disclosed. The vent system defines a vent path from the fuel storage tank to atmosphere. An elongate vent pipe extends vertically to a rain cap located at the upper end of the vent pipe. A pressure vacuum valve (PVV) is located in the vent path between the lower end of the vent pipe and the tank. The pressure vacuum valve maintains the vent path in a closed condition unless the pressure in the tank is above or below a predetermined pressure. By separating the PVV from the rain cap and placing it between the lower end of the vent pipe and the tank, it is possible to site the PVV at an accessible level for maintenance.

A vacuum vapor liquid recovery system employs a strong vacuum vessel that can withstand vacuums without damage. The vacuum vessel may be portable and configured to accept an inflow drain line for receiving waste liquid/vapors from a processing system. Additionally, at least one outflow drain line is attached to the vacuum vessel to which a vacuum truck or other similar recovery equipment can be connected in order to pump out whatever liquids/vapors have been drained into the vacuum vapor liquid recovery system. Additional features can include wheels to assist in moving and positioning the vacuum vapor liquid recovery system, tow bar, transport handles, support legs, sight port, a wash out connector, a vacuum relief, etc.