Cummins Inc., along with key technology partners, including Johnson Matthey, PHINIA, and Zircotec, has successfully completed 'Project Brunel', a milestone in the development of hydrogen internal combustion engine technology for commercial vehicles. The project, match-funded by the UK Government and facilitated by the Advanced Propulsion Centre UK (APC), delivered a 6.7-litre hydrogen internal combustion engine that offers more than a 99% reduction in tailpipe carbon emissions and ultra-low NOx levels compared to current diesel engine standards. The engine, powered by zero-carbon hydrogen fuel, showcases the potential of hydrogen technology for decarbonising commercial vehicles. The collaboration emphasized the importance of industry partnerships in achieving sustainability goals, with future scalability to heavy-duty applications like non-road mobile machinery. The project's success was highlighted at an event in Cummins' Darlington facility, where key learnings were shared to accelerate the decarbonisation of commercial vehicles. The project received positive feedback from industry experts, reaffirming the significance of hydrogen internal combustion engine technology in reducing air quality impacts and promoting decarbonisation in the transportation sector.