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1. Type IV tank features
1.1 Reservoir shape and geometry
In the automotive industry, the design of compressed hydrogen tanks faces particular challenges, linked to limited space, safety and vehicle energy efficiency. It is of prime importance that these tanks are integrated in such a way as to optimize available space, while guaranteeing vehicle safety and performance. Space optimization is a major consideration: tank integration must not encroach on passenger or cargo space. This may require customized designs to maximize hydrogen storage volume, while adapting to the specific dimensions of the vehicle, for example by using longer, slimmer tanks under the floor.
Reservoir geometry is also crucial to safety. Tanks must be able to withstand operating pressures of up to 700 bar, which...
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Type IV tank features
Type IV tank components
Bibliography
Standards and norms
- Gas cylinders – High-pressure cylinders for storing natural gas used as fuel in motor vehicles - ISO 11439 - 2013
- Standard for Fuel Systems in Fuel Cell and Other Hydrogen Vehicles - SAE J2579 - 2018
- Gaseous hydrogen — Land vehicle fuel containers - ISO 19881 - 2018
- Prescriptions uniformes relatives à la protection des véhicules à l'hydrogène, amendement 4 - Règlement ECE n° 134 - 2022
Patents
Method for making a part with clearance volume by rotational moulding and resulting part, US2003161981, 2003
Process for manufacturing a sealing bladder and reservoir, PCT/EP2007/055971, 2010
Process for the electrolytic oxidation of cerium and electrolysis unit for its implementation CA2582058
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