THIS paper presents observations of 25,000 hr of testing on five free-piston engines. Endurance test investigations were made especially on the operation of free-piston-engine air compressors and ...

It would have been revolutionary: an internal combustion engine without oil. And it might have worked. But lots of real-world ...

Subaru and jet turbines? The keiretsu doesn't build turbines itself, but it has plenty of experience with them through its ...

Achates Power’s cleaner, heavy-duty diesel engine it developed in a project funded by the California Air Resources Board and several partners has entered fleet service with Walmart in a Peterbilt 579 ...

A radiotracer method has been developed to measure piston ring and cylinder bore wear rates in spark-ignition (SI) engines. The method has sufficient sensitivity to measure ring and bore wear rates in ...