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Erschienen in:
2023 | OriginalPaper | Buchkapitel
Hydrogen Dosing Systems for Large Engines: Challenges and Potentials of Three Different Approaches
verfasst von : Enrico Bärow, Michael Willmann, Andreas Kühner, Rick Boom
Erschienen in: Heavy-Duty-, On- und Off-Highway-Motoren 2022
Verlag: Springer Fachmedien Wiesbaden
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Abstract
Hydrogen dosing systems for large engines are available as low pressure gas admission valves in the intake manifold, as mid pressure port fuel or direct injection systems and high pressure dual fuel systems. Here the first three options are used to operate the engine in an Otto-cycle mode, where the last injection system allows a Diesel-like combustion process.
All four engine concepts have their validity in their individual application. Key aspects for choosing one of the combustion technologies are system and operating costs – strongly related to the tank and periphery technologies needed to provide a certain system pressure for the dosing system.
The pressure and power range as well as the functionality of all systems, operating conditions and limitations will be discussed. Main challenges in the development and the practical application on an engine are shown as well as the corresponding technical solutions.
Where available, combustion results will be shared to support the working hypothesis for the selection of individual concepts / systems. A final conclusion will indicate individual benefits and will give an outlook, which system has to be expected on which engine application in the field.