Miller-cycle engines were commonly much bigger than Mazda's and traditionally used to power locomotives and large ships.

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 ...

China has built the most powerful thermoacoustic Stirling generator. The prototype delivered a groundbreaking 102 kilowatts of power from a heat source of 530 degrees Celsius (986 Fahrenheit). This is ...

Stirling engines, with their high conversion efficiency and excellent adaptability to various heat sources, show significant promise in the nuclear energy sector. This is particularly true for ...

Martin LaMonica is a senior writer covering green tech and cutting-edge technologies. He joined CNET in 2002 to cover enterprise IT and Web development and was previously executive editor of IT ...