The world’s first hybrid bus powered by liquid nitrogen (N2) has completed a rigorous series of trials to bring it another step closer to the road.
The hybrid vehicle, dubbed CE Power, runs on both diesel and liquid N2. It features a high-efficiency Dearman Engine alongside a conventional diesel engine.
The alternative propulsion system addresses urban air pollution challenges by reducing emissions during acceleration after stopping. The zero emission Dearman Engine enables the bus to frequently stop, unload and pull away from a bus stop without expelling damaging pollutants.
Whilst driving below 20 miles-per-hour, the liquid N2 – stored in a low pressure insulated cylinder – is heated to boiling point, creating enough pressure to drive the multi-cylinder Dearman engine. Once the bus reaches 20 miles-per-hour, the diesel engine takes over.
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