Revolutionary engine prototype three decades in the making could replace combined turbine-ramjet systems in high-speed flight ...

After years of rumors and experimentation behind closed doors, the Mazda rotary engine is officially back. The Vision X-Coupe, a plug-in hybrid concept showcased at the 2025 Japan Mobility Show, has ...

Here's the process of making this rotary valve engine with a different intake and an exhaust system. It wasn't easy to start ...