A management system includes a position detection unit which obtains a position of a work machine, a posture detection unit which obtains a posture of the work machine, an object detection unit which obtains a three-dimensional shape of a buried object, a position calculation unit which obtains a position of the buried object by using the position of the work machine obtained by the position detection unit, the posture of the work machine obtained by the posture detection unit, and the three-dimensional shape of the buried object obtained by the object detection unit, and an information acquisition unit which acquires buried object information including at least the position of the buried object obtained by the position calculation unit.

Device and method for filling pressurized gas tanks, particularly vehicle pressurized hydrogen tanks, the device comprising a liquefied gas source, a transfer circuit comprising two parallel transfer lines each having an upstream end linked to the liquefied gas source, at least two separate downstream ends intended to be each removably connected to a tank to be filled, each of the two transfer lines comprising: a pump, a vaporizer for evaporating the pumped fluid, a branch for bypassing the vaporizer and a distribution valve(s) set configured to control the flow of fluid pumped and distributed between the vaporizer and the branch line, the device further comprising a storage buffer(s), which storage buffer(s) is(are) connected in parallel to each of the two transfer lines via a set of valves.

A container that provides for control of fluid flow in the event of a failure of the container is disclosed. In accordance with embodiments of the present invention, a container is presented that includes a container wall; and one or more flow impeding structures coupled to the container wall, wherein at least one of the one or more flow impeding structures is a multi-sheet layer that deforms to impede flow in a failure of the container wall. In some embodiments, the multi-sheet layer includes cavities formed between individual sheets.

A method for refueling of gas into a pressurized gas tank with repeated adjustment of a target pressure (Ptarget) for the refueling is disclosed, said method comprising the steps of: recording starting conditions for the refueling, establishing a mathematical relation between the recorded starting conditions, the actual refueling time (t_refueling) passed and the target pressure for the refueling, starting the refueling, and repeatedly calculating the target pressure corresponding to the actual refueling time passed and measuring the nozzle pressure of the refueling station, until the calculated target pressure has been reached.

A type IV conformable pressure vessel is provided comprising an elongated folded tank and a valve assembly configured to pass fluid into and out of an interior of the tank through first and second filling couplers directly connected to a respective first and second end of the tank. The tank has at least two chambers for the storage of fluid. The valve assembly receives fluid from an external source, selectively provides the external fluid through a Venturi nozzle into a mixing chamber, recirculates fluid from the second end of the tank into the mixing chamber, and delivers the mixture of the recirculated fluid and the external fluid to the first end of the tank.

According to one or more aspects, a hydrogen fueling station is provided and includes one or more hydrogen fuel storage tanks, a pressure control device positioned downstream from the hydrogen fuel storage tanks, a dispenser positioned downstream from the pressure control device, and a heat load reduction line which forms a circulation loops from a first point downstream of the pressure control device to one or more of the hydrogen fuel storage tanks.

A road vehicle having: a frame; four wheels, which are mounted on the frame in a rotary manner; a body, which covers the frame; a compressor, which produces a compressed gas; and at least one tank, which receives the compressed gas from the compressor and has a containing chamber, which is delimited by a wall. The wall of the tank includes: an inner panel, which directly delimits the containing chamber and is in contact with the compressed gas; and an outer panel, which completely surrounds the inner panel and is arranged parallel to the inner panel and at a constant distance from the inner panel.

A hydrogen gas filling method includes: a step for acquiring a pre-supply upstream pressure that is a pressure in a station side of a piping at time t0, a step for starting the supply of hydrogen gas from the station at time t1 that is after the pre-supply upstream pressure is acquired, a step for acquiring a post-supply upstream pressure at time t2 that is immediate after the supply of hydrogen gas starts, a step for acquiring a start-time flowrate that is a flowrate of hydrogen gas at the same period as the step for starting, a step for estimating the pressure loss generated in the piping at the time of the supply by using the pre-supply upstream pressure, post-supply upstream pressure, and the start-time flowrate, and a step for stopping the supply of hydrogen gas so that a tank pressure conforms with a predetermined target pressure.

A pressurized tank system includes a first tank, a second tank, a manifold, a first conduit connecting the first tank to the manifold, a second conduit connecting the second tank to the manifold, a first pressure actuated valve operably connected to the second conduit, a third conduit connecting the manifold and the first pressure actuated valve, and a fourth conduit connecting the first pressure actuated valve and the second tank. The first pressure actuated valve is configured for operation by fluid pressure in the third conduit. A method includes operably connecting a first pressure actuated valve at a junction between the second conduit, a third conduit connecting to the manifold, and a fourth conduit connecting to the second tank; and automatically opening the first pressure actuated valve with the fluid in the third conduit when the fluid pressure level exceeds a threshold pressure level.

A system for controlling a gas supply unit supplying gas to a tank includes a pressure acquisition unit configured to acquire the pressure in the tank; and a controller configured to perform first filling for supplying the gas to the tank and to perform second filling, based on a flow rate determined based on a change in the pressure in the tank for a predetermined period of time during the first filling, by controlling the gas supply unit. The controller is configured to cause the gas supply unit to perform the first filling at a first flow rate in a case where the pressure in the tank prior to the first filling is a first pressure and perform the first filling at a second flow rate exceeding the first flow rate in a case where the pressure is a second pressure exceeding the first pressure.