Hylley
Research into Competitive and Practical Heavy Duty Hydrogen Engines
The co-operative, funded research project Hylley deals with the hydrogen engine for use in construction machinery and heavy commercial vehicles. The aim is to make the hydrogen engine competitive and practicable, to advance research topics and to create development methods. The contribution of the hydrogen engine to the realisation of sustainable mobility is indispensable in the commercial vehicle sector.
Through Hylley, four dissertation positions can be financed at the institute - as well as further dissertation students at the scientific partners. The Institute is acting as consortium leader.
The centrepiece of the project is the engine test bench, which will be in continuous operation for the entire duration of the project. A four-cylinder HD hydrogen engine has been in operation since mid-2024.
The results of the measurements are supplemented, expanded and deepened by simulations, with a focus on thermodynamics. The further development of the simulation for the requirements of the hydrogen engine is itself an important goal at Hylley.
The main thematic focuses of Hylley are the robustness and industrialisation of the hydrogen engine. Performance data that can be achieved under laboratory conditions should also be maintained under real operating conditions and, above all, over the service life. The main challenges here are, for example, combustion anomalies and material compatibility.
In addition to robustness, the hydrogen engine is also to be further optimised in terms of its performance data; this involves medium pressure, efficiency, dynamics and emissions. The idea is to visualise the limit potential of the hydrogen engine.
System optimisation and the development of the tools required for this is the overarching theme of Hylley. Depending on the application, it should be possible to optimise the entire drive train. This involves, for example, turbocharging, the injection system and exhaust gas aftertreatment, and in particular their interaction.
A competent consortium is the prerequisite for achieving our goals. We have succeeded in bringing together international pioneers in the field of hydrogen engines in the Hylley project. We look forward to the coming years and thank our partners for their participation.