A mobile fuel delivery system and method are described for dispensing fuel in a poorly ventilated area. The system includes a fuel dispensing nozzle for dispensing the fuel; a cargo tank 16 for containing the fuel; a vapour recovery nozzle for recovering vapour from a fuel tank of a vehicle during fuelling; a sealing mechanism for sealingly engaging the fuel tank, a vapour tank 18; a pressure/vacuum release valve 20 connected between tank 16 and tank 18 and which is operable to increase/decrease pressure within tank 16 during dispensing of fuel and recovery of vapour recovered by the vapour recovery nozzle and pumped into the tank 16; and a safety mechanism including a control module 38 and a pressure detector 36 for detecting pressure within the tank 18, the module 38 being operable to stop fuel dispensing when pressure in tank 18 reaches a predetermined pressure.

A secondary indicator for a vapor recovery valve is presented. The vapor recovery valve comprises a piston and a primary indicator, the primary indicator is attached to the piston, and the piston moves linearly in relation to the actuation of the valve and moves proportionally in conjunction with the piston to provide a visual indication that the valve has actuated. The secondary indicator is mounted to the vapor recovery valve and is not attached to the primary indicator. The secondary indicator comprises a signal, a torsional spring, and a fixed pin. The secondary indicator is second class lever, the torsional spring is the effort, the fixed pin is the fulcrum, and the primary indicator is the load between the torsional spring and the fixed pin, such that the signal rotates with the linear movement of the primary indicator to multiply the effect of the primary indicator.

A tank passage is connected at its one end to a fuel tank, which stores fuel. A canister is connected to the other end of the tank passage and adsorbs evaporated fuel generated by evaporation of fuel in the fuel tank. An electric control valve is operable with current supply to control an amount of fluid flowing through the tank passage by varying an open rate of the tank passage. A fill-up detection part detects that the fuel tank is filled up with fuel based on a fuel level in the fuel tank. A control part controls an operation of the electric control valve. The control part controls the electric control valve in the valve closing direction, which decreases the open rate, when the fill-up detection part detects that the fuel tank is filled up with fuel.

A hydrogen station operation method capable of adjusting pressure in a reservoir to the pressure suitable for liquid hydrogen replenishment while cutting hydrogen waste is for replenishing liquid hydrogen into the reservoir in a hydrogen station including: a gasification path partially gasifying liquid hydrogen out of the reservoir and returning it; and a gas delivery path delivering gasified hydrogen in the reservoir into a path between a vaporizer and a compressor or the vaporizer, when the remainder of liquid hydrogen in the reservoir becomes a first threshold or less, by reducing the liquid hydrogen amount flowing through the gasification path by a valve therein, reducing the gasification amount of liquid hydrogen in the reservoir, and increasing the hydrogen gas amount delivered through the gas delivery path from the reservoir by a valve therein, pressure in the reservoir is reduced, thereby performing operation where suction pressure of the compressor is reduced.

Disclosed is a fuel supply structure for a filler pipe including the hollow circular cylindrical part having the fuel filler port and the connection opening, the first flap mechanism which is disposed on a side of the fuel filler port of the hollow circular cylindrical part and opens the fuel filler port in response to press by a nozzle, the drain through hole for communication between the inside and the outside of the hollow circular cylindrical part, and the drain hole shutting valve for open and shutting the drain through hole. The drain hole shutting valve is provided with the opening/shutter mechanism including the valve member for shutting the drain through hole in response to an opening operation of the first shutter member.

A module (49, 149, 249) for use in a vehicle fuel system, said module comprising a housing (7) having a first port (9), a second port (41) and a passage (57) between the first port and the second port; a closure body (11) that is moveably arranged in said housing; wherein said closure body is configured for closing the passage between the first port and the second port in a first position of the closure body and for allowing access to the passage in a second position of the closure body; and a pump (13) that is integrated in said housing (7), wherein said pump (13) communicates with the first port (9) and is configured for pumping fluid into or out of the first port (9) while the closure body (11) is in the first position, characterized in that the module (49, 149) further comprises a motor (15) and a closure body actuator (67) configured for positioning the closure body (11, 111) in at least the first position and the second position, wherein said closure body actuator is driven by said motor (15), and said motor is configured for driving the pump (13) while the closure body is in the first position.

An exemplary system for improving gaseous venting from a fluid storage vessel includes a hollow member configured to receive a fuel nozzle, the fuel nozzle having an aspirate opening, a vent line fluidly connecting the fluid storage vessel and the hollow member, and a flow guide device fluidly connected to the hollow member and the vent line. The flow guide device includes a flow guide chamber having an inlet, a plurality of sidewalls, and an outlet, and a plurality of directional blades formed within the flow guide chamber. The plurality of directional blades direct a fluid flow through the flow guide chamber and the hollow member toward the aspirate opening of the fuel nozzle.

The LNG fuelling nozzles are plugged to the vehicles propelled by natural gas specifically in a coupling means of the fuel tanks. During the unplugging of said nozzles once the tank has been filled cause always inevitably a gas leak and in the event of a leak during the filling there is a leak near the user which, in addition to be hazardous, pollute the environment and economically harms the user.

For this reason the invention proposes a solution consisting of channeling the gas from these leaks to a supplementary tank and, from it to the supply tank, recovering all the leaks, for which a pipe is used as main elements of the device, which is coupled to the bayonet by means of a seal connector made of Teflon or similar material and, a check valve at the inlet of the supplementary tank, said seal can be incorporated either in the bayonet or in the receptacle.

A system for recovering fuel vapor during delivery of fuel by a mobile fueler includes a storage tank covered with a layer of insulation, a supply pump connected to the storage tank for delivering fuel therefrom, and a fuel dispensing assembly, preferably a coaxial hose and nozzle, including a supply outlet for delivering fuel to a vehicle being fueled, and a vapor recovery inlet proximate the supply outlet. A diverter valve diverts a portion of the fuel in the supply line, and a vacuum jet pump is connected to the storage tank and, by a vapor line, to the vapor recovery inlet, which is driven by the diverted fuel to create a vacuum in the vapor line to draw vapor into the vapor recovery inlet, through the vapor line, and into the storage tank.

A system for recovering fuel vapor during delivery of fuel by a mobile fueler includes a storage tank covered with a layer of insulation, a supply pump connected to the storage tank for delivering fuel therefrom, and a fuel dispensing assembly, preferably a coaxial hose and nozzle, including a supply outlet for delivering fuel to a vehicle being fueled, and a vapor recovery inlet proximate the supply outlet. A diverter valve diverts a portion of the fuel in the supply line, and a vacuum jet pump is connected to the storage tank and, by a vapor line, to the vapor recovery inlet, which is driven by the diverted fuel to create a vacuum in the vapor line to draw vapor into the vapor recovery inlet, through the vapor line, and into the storage tank.