Mazda used a two-rotor design engine with two turbochargers in its now legendary third-generation RX-7 sports car. We'll just ...

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

This engine is the basis of the modern “Wankel” rotary engine. Piston powered engines, chiefly the Otto and Diesel cycle, are current kings of the internal combustion mountain. Piston powered ...

In the end, emerging rotary technology was simply not as viable as implementing restrictions on the well-understood piston engine during such a critical and delicate time period in automotive history.

I have already written about LiquidPiston and its XTS-210, but Avadi's idea is even more striking: it is a reciprocating engine that works as a rotary. Imagine an ICE with a single piston.