The project "Simulated design of the piston geometry of a hydrogen engine" deals with the potential analysis of various mixture formation concepts suitable for diverse piston bowl geometries within the realm of hydrogen combustion engines, specifically within the context of commercial vehicle applications. For this study, a single-cylinder commercial vehicle engine is equipped for hydrogen operation, both with port fuel- and direct injection, and operated on an engine test bench. The reference point for comparison is the direct fuel injection design, which is subsequently contrasted with various piston bowl concepts in terms of their capability to create an optimal air-fuel mixture through the combustion chamber.