Efforts are underway to retrofit existing diesel engines to run on a 90% hydrogen fuel blend, representing a key step towards cleaner transportation solutions. This technology offers the potential to drastically reduce carbon dioxide and nitrous oxide emissions, while simultaneously increasing engine efficiency. The retrofit system introduces hydrogen directly into the engine, replacing the existing diesel injection system. The technology can efficiently utilize low-quality hydrogen. The development team has showcased how the stratified hydrogen injection technique will be able to produce pockets of higher and lower concentration within the cylinder. This will reduce nitrous oxide emissions to levels lower than those of conventional diesel engines. Several other companies are working on similar retrofit kits, including a direct injection device that generates its own hydrogen and requires only water top-ups.
