An axial piercing mechanism for a pressurized gas canister includes a housing, electric motor assembly, pushrod assembly, and lancet. The housing defines one or more radial exhaust ports and coaxial internal cavities. The electric motor assembly and pushrod assembly are disposed in the respective first and second cavities. The pushrod assembly is coupled to the electric motor assembly and is rotatably driven along the longitudinal axis thereby. The lancet is coupled to the pushrod assembly. The housing includes a second end that receives or couples to a sealed end of the pressurized gas canister proximate the lancet such that the electric motor assembly, when energized, causes the pushrod assembly and lancet to translate along the longitudinal axis, pierce a sealed end/diaphragm of the canister, and release pressurized gas through the exhaust port. A system includes the axial piercing mechanism and the pressurized gas canister.

A high-pressure hydrogen container is provided that has a simple configuration, requiring less labor for manufacture, achieving reduced manufacturing costs, and ensuring pressure resistance. The high-pressure hydrogen container includes a metal cylinder configured to store high-pressure hydrogen, a pair of lid parts configured to cover both end portions of the metal cylinder, and a plurality of fastening parts configured to fix the pair of lid parts in a state where the metal cylinder is clamped between the pair of lid parts.

For improving storage of hydrogen in a vehicle, a hydrogen tank assembly is provided for a vehicle. The hydrogen tank assembly includes an inner tank wall defining a hydrogen tank volume configured for storing liquid hydrogen; and an outer hydrogen collector defining, together with the inner tank wall, at least one cavity outside of the hydrogen tank volume and including at least one hydrogen outlet for leading gaseous hydrogen which leaks from the hydrogen tank through the inner tank wall into the at least one cavity to a hydrogen storage or a hydrogen consumer.

This invention relates to a novel method and system for dispensing CO2 vapor without over pressurization. The system includes one or more liquid containers and one or more vapor containers. The system is designed to operate in a specific manner whereby a restricted amount of CO2 liquid is permitted into the vapor container through a restrictive pathway that is created and maintained by a shuttle valve during the filling operation so that equalization of container pressures is achieved, thereby allowing shuttle valve to reseat when filling has stopped. During use, a pressure differential device is designed to specifically isolate the vapor container from the liquid container so as to preferentially deplete liquid CO2 from the vapor container and avoid over pressurization of the system until the vapor container. The system is operated so that at least 50% of the CO2 product is dispensed from the vapor container. The system also includes novel control methodology for performing pre-fill integrity checks to ensure safety of subsequent dispensing of CO2 liquid from a source vessel to the onsite CO2 containers.

This invention relates to a novel method and system for dispensing CO2 vapor without over pressurization from a system having multiple containers. The system includes one or more liquid containers and one or more vapor containers. The system is designed to operate in a specific manner whereby a restricted amount of CO2 liquid is permitted into the vapor container through a restrictive pathway that is created and maintained by a shuttle valve during the filling operation so that equalization of container pressures is achieved, thereby allowing shuttle valve to reseat when filling has stopped. During use, a pressure differential device is designed to specifically isolate the vapor container from the liquid container so as to preferentially deplete liquid CO2 from the vapor container and avoid over pressurization of the system until the vapor container becomes liquid dry. The system can be operated so that at least 50% of the CO2 vapor product is dispensed from the vapor container.

A method is provided for refueling a cryogenic pressure vessel of a motor vehicle. The motor vehicle has: a) a cryogenic pressure vessel having an internal vessel which stores a fluid, an external vessel and heat insulation which is arranged between the internal vessel and the external vessel, at least in certain areas; and b) a controller, wherein the controller is designed to interrupt refueling of the motor vehicle if, in the case of damaged thermal insulation, a lower fluid density limiting value for the fluid in the internal vessel is exceeded. The lower fluid density limiting value is lower than an upper fluid density limiting value for the fluid in the internal vessel in the case of refueling of the internal vessel with intact thermal insulation.

A gas pressure vessel capable of performing processing of removing wrinkles on an inner surface of a dome part and preventing cracking starting from a root of a thread of a neck part is provided. In a gas pressure vessel according to one embodiment, a dome part (12) has an opening whose diameter is 90 mm or greater, and the innermost root of the thread in a female thread part (10a) into which a lid (20) is screwed is provided inside an imaginary plane (B) formed by extending an outer surface of the dome part (12) toward an opening.

A compressed natural gas fueling system includes a frame arrangement with at least one tank disposed therein and an inlet that can receive a compressed natural gas fueling nozzle to fill the at least one tank. The fueling system can be attached with and supported by frame rails behind a cabin of a vehicle such that the inlet is positioned above the frame rails.

The invention relates to a hydrogen pressure tank using a metal hydride arranged in a porous matrix material. It is provided that the metal hydride is fixed in the structure of the matrix material.

A pressure vessel includes an outer shell and pressurized elements disposed within the outer shell that contains a pressurized gas. The pressure vessel includes a bearing system disposed between the pressurized elements and the outer shell, and the bearing system allows controlled movement of the pressurized elements in respect to the outer shell.