Vehicles fueled by hydrogen are much more energy-efficient than those powered by fossil fuels, and they only emit water vapor and warm air. But these vehicles need special battery-like devices called fuel cells to drive their motors.Not anymore. Researchers in Australia have retrofitted diesel engines to run on 90 percent hydrogen as fuel, emitting 86 percent less carbon.Trucks, trains, ships, and farm and construction equipment all use diesel today. Existing diesel engines be retrofitted to the new hybrid system in a few months, the researchers say. This switch could speed up the transition to clean hydrogen transportation.The hydrogen economy, after decades-worth of hype and anticipation, has picked up speed in recent years. Hydrogen is a clean and energy-dense fuel, but it is only truly sustainable when produced by splitting water with the help of renewable electricity.
Engineers retrofitted a diesel engine to burn clean hydrogen
