Process

The project Process has, in the technical sense, a larger scope. It considers the entire gas path of the engine and anything that is related to or depends on the entire gas path. It is more related to the general engine working process than the combustion-focused project.
Clearly, the air management system is the most important topic within this project, due to its enormous impact to the combustion of hydrogen. Not only the efficiency and power density are largely determined by the capabilities of the air management system (what is the case with any fuel) but also the NOx formation and the risk of anomalous combustion (what is particularly the case with hydrogen).

While it is our goal to minimize the engine-out pollutant emissions (mostly NOx), it is not possible to totally omit an exhaust gas aftertreatment (EGT) system on hydrogen combustion engines. Both the combustion and the aftertreatment system are to be optimized to reach a Zero Impact Emission level. Thus, the aftertreatment has an important part of the Hylley.

Process also considers the further increase of the rated power (i.e. the power density) of the engine. The supercharging dominantly governs the power of the engine, thus this topic was assigned to the Process project. Of course there is a strong interaction with the combustion related topics in Combustion.