The present disclosure relates to a thermal pressure relief device for gas pressure tanks and/or gas pressure tank systems, comprising: a valve unit which can be fluidically connected to the gas pressure tank and/or the gas pressure tank system and comprises at least one fluid path, by means of which the gas pressure tank and/or the gas pressure tank system can be drained, in particular a gas stored under high pressure in the gas pressure tank and/or the gas pressure tank system can be discharged into an environment, wherein the valve unit comprises a locking element which can be shifted and/or moved between an open position, in which the gas can flow through the fluid path, and a closed position, in which no gas can flow through the fluid path, and a first trigger means configured to shift and/or move, due to heat impact, in particular when reaching a predetermined temperature, the locking element into the open position and/or to enable the locking element to shift and/or move into the open position, wherein the first trigger means is further configured to detect the heat impact at least at one further location of the gas pressure tank and/or the gas pressure tank system, which is not the installation location of the thermal pressure relief device, and/or to detect the heat impact at least at two spatially separated locations and/or areas, in particular of the gas pressure tank and/or the gas pressure tank system.

The present disclosure relates to a valve unit for a fuel supply system which is preferably adapted to supply a fuel cell system with fuel, comprising: at least one temperature detector, at least one pressure detector, and a safety valve integrated into a line section, wherein the safety valve can be adjusted between an open position, in which gas is able to flow through the line section, and a closed position, in which gas is not able to flow through the line section, wherein the temperature detector and the pressure detector are so disposed that they are able to detect a temperature and a pressure of the gas flowing through the line section in a state in which the gas is present at the closed safety valve in such a manner that it exerts pressure. The present disclosure relates further to an on-tank valve which can have all the features described in relation to the valve unit and differs from the valve unit only in that it is able to be mounted directly on a gas pressure tank. The present disclosure relates further to a gas pressure tank system for storing fuel, comprising: at least one gas pressure tank and a valve unit. Finally, the present disclosure relates to a method for detecting a possible leakage in a fuel supply system, and to a valve assembly.

A composite storage tank may include a wall structure including at least three regions including an inner region, an outer region, and at least one permeation barrier. Another region may be optionally incorporated for venting potential permeation of fluids. The at least one permeation barrier and/or the venting layer may be strategically positioned between the inner region and the outer region to reduce or at least partially prevent fluid permeation of the inner region or the outer region. A vehicle may include such a composite storage tank. Methods of forming a composite fluid storage tank may include forming an inner composite region, applying a permeation barrier to an outer surface of the inner composite region, forming an outer composite region, and curing the inner composite region and the outer composite region with the permeation barrier to form the composite fluid storage tank.

The invention relates to a valve device (100) for a gaseous medium, in particular hydrogen, comprising a valve housing (6) which comprises a closing element (14) that is arranged therein and can be moved in the longitudinal axis (18). The closing element (14) interacts with a seal seat (16) in order to release and close a through-opening (22). The valve housing (6) is equipped with at least one spring element (8) which is supported against the closing element (14) and the valve housing (6). Furthermore, the at least one spring element (8) is made of a bimetal.

The invention relates to a method for opening a valve assembly for a fuel tank, comprising a pilot valve (V.sub.1) and at least one additional valve (V.sub.2), in particular for use in a fuel cell-operated vehicle, having the steps of applying (30) an amplification voltage (S.sub.1) in order to open the pilot valve (V.sub.1) in an opening phase (P.sub.1) of the pilot valve (V.sub.1), deactivating (32) the amplification voltage (S1) in order to terminate the opening phase (P.sub.1) of the pilot valve (V.sub.1), applying (34) a pull-in voltage (S.sub.2) in a pull-in phase (P.sub.2) of the pilot valve (V.sub.1) in order to hold the pilot valve (V.sub.1) open, and activating and deactivating (36) the pull-in voltage (S.sub.2) in an alternating manner in order to hold the pilot valve (V.sub.1) open and in order to open the at least one other value (V.sub.2) and hold same open in a readjustment phase (P.sub.3) such that the hold-open energy required on average for holding the pilot valve (v.sub.1) open and the opening energy and/or hold-open energy required on average for the at least one other valve (V.sub.2) is provided.

An apparatus for controlling a fuel tank according to an embodiment of the present disclosure may include a fuel tank having a plurality of volumes, and a controller that controls a charging state of a fuel charged in the fuel tank and selectively controls use of the fuel charged in the plurality of volumes based on an amount of the fuel used and a state of the fuel tank.

This application describes methods for responding to a storage vessel leakage event and the implementation of one or more assemblages of components to provide remediation of the leakage event. This application also describes methods of teaching storage vessel leakage remediation for responders and how to use the method of responding to storage vessel leakage event in combination with the one or more assemblages of components.

The invention relates to an indoor safety device for a liquefied fuel gas system, the system comprising a storage device storing liquefied fuel gas; a vent member arranged in fluid communication with the gas inside the storage device; and a safety valve arranged to evacuate gas when the pressure inside the storage device exceeds a predetermined first value, the safety device comprising: a vent coupling; a pressure relief valve arranged downstream of the vent coupling; and a conduit for conveying gas, adapted to be connected to the pressure relief valve, the safety device being removably connected to the system by connecting the vent coupling to the vent member, wherein the pressure relief valve is configured to release gas when the pressure inside the storage device exceeds a predetermined second value, lower than the first value.

A pressure vessel system for a vehicle includes a pressure vessel and a fuel line. The system also includes a blocking unit which, in an inoperative state, prevents fuel from passing out of the pressure vessel into the fuel line. A control unit for the blocking unit is designed, under the action of electrical energy, to transfer the blocking unit from the inoperative state into an active state in which fuel can pass out of the pressure vessel into the fuel line. Furthermore, the system includes an electrically conducting connection to an electrical system of the vehicle via which electrical energy can be provided for controlling the blocking unit. In addition, the system includes an access interface unit via which electrical energy for controlling the blocking unit can be provided from an external energy supply if no electrical energy is available from the electrical system of the vehicle.

The invention relates to a safety valve system (10a; 10b; 10c) for a combustion gas vehicle (11), having: an excess pressure valve unit (13) with a first gas outlet (14) for discharging excess pressure gas (29) out of a combustion gas tank (12) of the combustion gas vehicle (11) in a first outlet direction (RI) and at least one additional gas outlet (15, 16, 17) for discharging excess pressure gas (29) out of the combustion gas tank (12) in at least one additional outlet direction (R2) which differs from the first outlet direction (RI); a state detection unit (18) for detecting a vehicle position and/or a vehicle orientation of the combustion gas vehicle (11) and/or a surroundings state of the combustion gas vehicle (11); and an adjustment unit (19) for adjusting the discharge of excess pressure gas (29) through the first gas outlet (14) and/or through the at least one additional gas outlet (15, 16, 17) on the basis of the detected current vehicle position, the detected current vehicle orientation, and/or the detected surroundings state. The invention additionally relates to a combustion gas vehicle (11), to a computer program product (26), and to a storage means (26) with a computer program product (26) stored thereon.