Ferrari has filed a patent for an engine with oval-shaped pistons. The design shortens powertrain length without losing ...

We’re introduced to the traditional two-stroke diesel engine as thermally efficient but not smooth-running, and then the gas turbine as smooth but much more inefficient. The free piston engine ...

Even military propeller aircraft, like the C-130 Hercules and the Airbus A400M Atlas, have jet engines behind their propellers. So, what are piston and turboprop engines? How do they work ...