Tiny single-piston hydrogen engine repackages internal combustion

Israeli startup Aquarius Engines has developed an ultra-lightweight 10-kilogram hydrogen engine that runs directly on hydrogen, without fuel cells or complex systems. This breakthrough offers a low-cost, scalable alternative to fossil fuels for power generation and mobility. • The engine operates using hydrogen combustion, producing only water vapor as exhaust. • Weighing just 10 kg, it is far lighter than conventional engines or fuel-cell systems. • The design uses very few moving parts, reduci

A little startup that could: Aquarius builds an engine others only dreamed of

Here’s Why We Don’t Have Opposed-Piston Engines—at Least Not Yet