A hot air or Stirling engine runs without carburetors, injectors, cams, valves, timing chains, spark plugs, or anything. It’s incredibly simple and can even be emissions negative, running on waste ...

During the Piston Powered Auto-Rama at the I-X Center in Cleveland on Monday, March 31, 2025, NASA Glenn Research Center's ...

Wärtsilä’s 4-stroke engine-based solution for ammonia fuel now delivers higher than ever levels of efficiency and ...

The Wärtsilä 25 ammonia engine, which is available as part of the Wärtsilä 25 engine platform, was developed based on ...

Technology group Wärtsilä’s 4-stroke engine-based solution for ammonia fuel now delivers higher than ever levels of efficiency ...

A former police officer will set off on a mammoth charity cycle this weekend that will ... to raise vital funds in memory of a tragic Stirling schoolgirl. Johnny Dreczkowski, a retired Detective ...

The model Stirling engine is a staple of novelty catalogues, and we daresay that were it not for their high price there might be more than one Hackaday reader or writer who might own one.

The ramjet needs to be moving at high speeds in order for the compression wave to build up and start the engine cycle. That means it has to be accelerated by means of a booster rocket or dropping ...

before the end of the new engine cycle for revised turbo hybrids, which runs from 2026-30. Although officially the idea is still being discussed, and Ben Sulayem remains committed to it privately ...