Pressure system, aircraft and procedures

A passive switching mechanism using pressure differentials addresses reliability issues in hydrogen-based propulsion systems by ensuring uninterrupted fuel supply, extending service life, reducing weight, and lowering maintenance and costs.

DE102024139779A1Undetermined Publication Date: 2026-07-02APUS ZERO EMISSION GMBH
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Patent Information

Application Number
DE102024139779
Authority / Receiving Office
DE · DE
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-12-27
Publication Date
2026-07-02

AI Technical Summary

Technical Problem

Existing systems for switching between pressure vessels in transport means, particularly in hydrogen-based propulsion systems, face reliability issues with manual or automated valves, leading to potential fuel shortages and system failures, and require frequent maintenance.

Method used

A passive switching mechanism using pressure differentials to connect and disconnect fuel supply lines to an energy converter, eliminating the need for external energy sources and reducing complexity, maintenance, and weight by employing check valves and pressure reducers to manage pressure differentials.

Benefits of technology

Ensures uninterrupted fuel supply, extends service life, reduces weight and maintenance, and lowers costs by minimizing unnecessary switching cycles and redundant designs.

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Abstract

The application relates to a pressure system (100, 100', 100'', 100''') for a means of transport, in particular a hydrogen-powered aircraft (400), comprising a first supply line (111) fluidically connectable or connected to a first pressure vessel (210) and a second supply line (112) fluidically connectable or connected to a second pressure vessel (220), a service line (113) for supplying a fluid from the first supply line (111) and / or the second supply line (112) to an energy converter (300, 300a), in particular a fuel cell device, and a switching device (120) for selectively fluidically connecting the first and second supply lines (112) to the service line (113) such that the service line (113) is connected to the first supply line (111) in a first state of the switching device (120) and from the second supply line (112) is separated and in a second state of the switching device (120) is fluidically connected to the second supply line (112),wherein the switching device (120) is configured to be passively switched from the first state to the second state by a pressure difference in the pressure system (100, 100', 100'', 100''') when a minimum pressure is undershot.
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