Both rotary engines and piston engines utilize internal ... In 1954, German engineer Felix Wankel invented a new design for an automobile rotary engine for the German car and bike company NSU.

It is only now – when they are allegedly on the verge of disappearing – that new and revolutionary ... engine that works as a rotary. Imagine an ICE with a single piston.

In the late 1960s, a Japanese automaker took a bold leap with an unconventional engine that defied traditional design.

When he arrived, he bragged to his friends that his car used a new type of engine ... and licensed. This engine is the basis of the modern “Wankel” rotary engine. Piston powered engines ...

It’s possible that it could find a life as an engine running on an alternative fuel such as hydrogen or ammonia, but we’re not so sure. If new free piston engines do take off though ...