The present invention provides a fuel filling system and a fuel filling method thereof that can determine the validity of information transmitted from a vehicle side while filling fuel with high accuracy. A hydrogen gas filling method of a hydrogen filling system includes: a step of filling hydrogen gas from a hydrogen station to a hydrogen tank under a predetermined filling control law (S2); and a determination step of determining whether a measurement error parameter corresponding to a difference between a filling amount of hydrogen gas calculated using information transmitted from the vehicle side and a filling amount of hydrogen gas calculated using a mass flow meter is within a predetermined permissible range (S9). In the filling step, the filling control law is changed after starting the filling of hydrogen gas, according to a determination result obtained in the determination step (S13 and S16).

A method for filling or withdrawing from a pressurized gas tank. The tank having a wall having a cylindrical overall shape with dimensions and thermophysical properties that are given and known. The method including the regulation of the flow rate of the introduced or withdrawn gas, and/or of the temperature of the introduced gas, to avoid a situation in which the tank reaches a given high temperature threshold or a given low temperature threshold. The method including a step of estimating, by calculating in real time, at least one tank temperature from: the average temperature of the tank wall, the maximum temperature reached by the tank wall, the minimum temperature reached by the tank wall, and in that the flowrate of gas or the temperature of the gas is regulated depending on the calculated tank temperature.

A valve assembly for pressurized containers includes a main structure, a rotary control element rotatably connected to the main structure and configured so as to allow a gas flow through the valve assembly in accordance with an angular position thereof about a main rotation axis, a detection device which includes an angular position sensor and a movable member. The angular position sensor is configured to detect the angular position of the movable member about an auxiliary rotation axis. The movable member is rotatably supported on the main structure and the angular position sensor is fixed to the main structure. The valve assembly further includes a movement conversion mechanism configured so as to convert the movement of the rotary control element about the main axis into a corresponding rotational movement of the movable member about the auxiliary axis which is different with respect to the main rotation axis.

A method for filling tanks with pressurized gas via a filling station comprising several storage containers and a fluid circuit for transferring the gas from the containers to the tanks, the circuit comprising a first end to which the containers are linked in parallel and a second end provided with a transfer line intended to be connected to the tank(s) to be filled, the circuit comprising, arranged in series between the first end and the second end, a first isolation valve, a flow or pressure regulation member, and a second isolation valve, the method comprising filling a first tank, characterized in that, on completion of the filling of the first tank and before filling a second tank, the first and second isolation valves are closed to trap a supply of pressurized gas in the circuit between said two valves and in that the supply of gas is used to refill at least one of the containers.

Provided is a gas filling system capable of further improving SOC of a gas tank. A gas filling system includes a gas tank and a gas station. The gas station includes a gas feed line, a gas return line, a gas circulation pump configured to circulate the gas between the gas tank and the gas station through the gas feed line and the gas return line, and a precooler configured to cool the gas fed from the gas station to the gas tank through the gas feed line. The gas is supplied from the gas station to the gas tank while the gas cooled by the gas precooler to a temperature lower than a heat resistant temperature of the gas tank is being circulated between the gas tank and the gas station.

The present invention relates to a liquefied gas treatment system and method. A liquefied gas treatment system includes: a liquefied gas supply line connected from a liquefied gas storing tank to a source of demand, a heat exchanger provided on the liquefied gas supply line between the source of demand and the liquefied gas storing tank, and configured to heat exchange the liquefied gas supplied from the pump with heat transfer media with heat transfer media, a media heater configured to heat the heat transfer media, a media circulation line connected from the media heater to the heat exchanger, a media state detecting sensor provided on the media circulation line, and configured to measure a state of the heat transfer media, and a controller configured to set a gasification prevention reference value for preventing the heat transfer media from being gasified, and change a flow rate of the heat transfer media flowing into the media heater or calories supplied to the heat transfer media by the media heater on the basis of a state value of the heat transfer media by the media state detecting sensor and the gasification prevention reference value.

A facility for distributing liquefied hydrogen comprising a source of gaseous hydrogen, a liquefier, at least one means for storing liquid hydrogen, the liquefier comprising an outlet connected to an inlet of the storage means via a liquid circuit the facility comprising a liquid filling circuit provided with a first end connected to the storage means and a second end intended to be removably connected to a first end of a mobile liquid tank 6) to be filled, the facility further comprising a gas recovery circuit provided with a first end intended to be removably connected to a second end of the tank and a second end connected to a receiving member of the facility, the gas recovery circuit comprising a pressure and/or flow-rate regulating member, such as a valve for lowering the pressure in the mobile liquid tank to a determined filling pressure, the facility comprising an electronic control member comprising a microprocessor configured to receive at least one filling request signal from a mobile liquid tank, the pressure and/or flow-rate regulating member being adjustable and the electronic control member being configured to actuate the latter to regulate the pressure level in a mobile liquid tank to a determined filling pressure based on a received filling request signal.

The present disclosure provides active venting control systems for use with liquid hydrogen tanks. The active venting control system allows a greater mass of hydrogen to be safely stored for a greater period of time. The systems is configured to actively monitor, control, and vent hydrogen based on a combination of pressure and fill level within the tank. When the tank reaches a predetermined fill level, the active venting control system is configured to vent the tank for a predetermined period of time. The active venting control system is configured to repeat the process during a transit and storage time, allowing the tank to be filled with a higher initial fill level and hold a greater mass of hydrogen compared to passive pressure relief systems.

A liquefied gas treatment system includes: a liquefied gas supply line connected from a liquefied gas storing tank to a source of demand, a pump provided on the liquefied gas supply line, and configured to pressurize liquefied gas discharged from the liquefied gas storing tank, a heat exchanger provided on the liquefied gas supply line between the source of demand and the pump, and configured to heat exchange the liquefied gas supplied from the pump with heat transfer media, a media heater configured to heat the heat transfer media, a media circulation line connected from the media heater to the heat exchanger, and a controller configured to change a flow rate of the heat transfer media flowing into the media heater or calories supplied to the heat transfer media by the media heater on the basis of a flow rate of the liquefied gas supplied to the heat exchanger

A method and apparatus for compressing gases and supplying fuel to a gaseous fuel consuming device, such as a gaseous fueled vehicle or the like. One embodiment includes a gas compressor for compressing the gaseous fuel to an array of tanks having predetermined initial set points which are increasing for tanks in the array. One embodiment provides a selecting valve having first and second families of ports wherein the valve can be operated to select a plurality of ports from the first family to be fluidly connected with a plurality of ports with the second family, and such fluid connections can be changed by operation of the valve.