Strange engine configurations that never reached production always makes for interesting reading. Here are our favorites.

The traditional piston engine has garnered the vast majority of attention and application in the internal combustion age, but there was another: the Wankel rotary engine. German engineer Felix ...

We all know about opinions – everyone’s got one etcetera – but there’s perhaps nothing quite as divisive in the automotive world as the rotary engine. Aficionados will wax lyrical about ...

Talk of radically different designs always leads to a single name – Wankel. The Wankel rotary engine, most notably used in automobiles by Mazda, has been around since the late 1950’s.

Rotary engines (also known as Wankel engines and Wankel rotary engines) are quite different from piston or "reciprocating" engines. One of the distinguishing features is that they don't need ...

Since it looks like Mazda may very well revive the Wankel rotary engine as a range extender for electric cars, there's no better time to become reacquainted with the quirky internal-combustion engine.

super-efficient engine that functions a lot like Wankel rotary units. Despite that, LiquidPiston says the unit can deliver 50 percent efficiency compared to a traditional gasoline engine which ...

Both 787Bs were powered by 2.6-liter four-rotor engines that were detuned to 700 horsepower. Afterward, the FIA announced that rotary engines would no longer be allowed at Le Mans.

According to Davis, the rotary engine will continue to play a role in the company's products moving forward, with engineers applying the lessons learned through the SkyActiv program to the powerplant.

The model’s rotary engine is also intended as a backup for power production in emergencies and other contingencies. For example, if a household consumes 10 kilowatt-hours daily, electricity can ...

The rotary engine became part of the soul of Mazda, and if it can be a bit flawed in operation, at least it has true ...

Mostly. The rotary engine became part of the soul of Mazda, and if it can be a bit flawed in operation, at least it has true character. And this low-mileage 2011 RX-8 for sale on Bring a Trailer ...