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.
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Abbreviations
- DI:
-
Direct injection
- EPRS:
-
Electronic pressure regulation system
- HPDF:
-
High pressure dual fuel
- HPDI:
-
High pressure direct injection
- LNG:
-
Liquefied natural gas
- LH2:
-
Liquefied hydrogen
- LOHC:
-
Liquid organic hydrogen carrier
- MPI:
-
Medium pressure injection
- PC:
-
Pre-combustion chamber
- PFI:
-
Port fuel injection
- SOGAV:
-
Solenoid operated gas admission valve
References
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Acknowledgements
The authors would like to thank all the Woodward members who closely collaborate in the development of the future P2X injector families. We especially appreciate the support we receive from Woodward’s Technology group (know-how and guidance in combustion technology, simulation and design) and Woodward’s rapid prototype network, especially: Greg Hampson, Domenico Chiera, Jessica Deblois, James Wood, John Karspeck and Chuck Brennecke.
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© 2023 Der/die Autor(en), exklusiv lizenziert an Springer Fachmedien Wiesbaden GmbH, ein Teil von Springer Nature
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Bärow, E., Willmann, M., Kühner, A., Boom, R. (2023). Hydrogen Dosing Systems for Large Engines: Challenges and Potentials of Three Different Approaches. In: Heintzel, A. (eds) Heavy-Duty-, On- und Off-Highway-Motoren 2022. HDENGI 2022. Proceedings. Springer Vieweg, Wiesbaden. https://doi.org/10.1007/978-3-658-41477-1_8
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DOI: https://doi.org/10.1007/978-3-658-41477-1_8
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