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

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.

The engine is the heart of any car. Check out which car brands have earned a reputation for building the most reliable ...

The U.S. Army is no stranger to flying Schweizer products. The S-300 family of helicopters were derived from the Hughes 269, ...

Ken Jones bought a bike from an Oregon dealership, then found a second one for free this month in Torrington. Another miracle: he got it started.

As the piston moves back up the cylinder ... One example is Mazda with its Renesis rotary engine. This lives under the hood of its 2004-2011 RX-8 sports car, and due to an abnormal amount of failures, ...

The last-ever V12 Vantage wasn't as good to drive as its predecessor, but it was spectacular enough in other ways ...