The story of how Honda developed an oval-piston race engine that ultimately failed but still made history along the way.

Hang around an American car meet long enough, and you will hear the phrase stroker, or stroked engine mentioned, followed by some bragging about torque and such - most often with regard to a Ford ...

Automotive giant General Motors has filed patents for a two-stroke engine of the type whose excess emissions took it off the road decades ago as a technology seen as having no future.The patent is for ...

Free-piston engine generators and linear machines represent an innovative departure from conventional rotary systems, offering high thermal efficiency and operational flexibility by eliminating the ...

When INNengine's designs first made headlines in February 2023, I tried to talk to the Spanish company. I never heard back from them, something I saw as a sign not to insist on learning more about ...