Efforts are underway to transform existing diesel engines, enabling them to run on a hydrogen-based fuel system. This retrofit technology, developed by UNSW researchers, is designed to allow diesel engines to operate on 90% hydrogen, reducing both carbon dioxide and nitrous oxide emissions while also boosting efficiency. The system replaces the original diesel injection system and incorporates hydrogen injection with independent timing control. The system can efficiently utilize low-quality hydrogen. A key feature of this innovation is the stratified hydrogen injection technique, which creates pockets of varying hydrogen concentrations within the cylinder, decreasing nitrous oxide emissions. The goal is to provide a means for businesses to lower their emissions without discarding operational equipment. The developers are planning to commercialize the system, with an initial focus on fleet and generator operators with existing hydrogen supplies.
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