The mission of the group is to develop ultra-clean combustion concepts for heavy-duty transport within the context of the necessary emergence of new, low-carbon, fuels (bio- and e-fuels). Due to the complex interaction between the fuel and the emissions this can only be achieved by developing a deep understanding of the underlying critical processes. For this we use a set of unique experimental set-ups, advanced (optical) diagnostic techniques and efficient state-of-the-art numerical tools. The knowledge will lead the way to the best future fuels to reach the set goals in the ‘klimaatakkoord’.