Astron aerospace has shown a partial prototype of a new rotary combustion engine it claims runs at an extraordinary 60% thermal efficiency, burning totally clean with zero NOx emissions and nothing ...

The rotary engine, a unique and unconventional design, has provided Mazda with remarkable advantages in the world of racing.

Rotary engines, known for their unique design and compact size, have been predominantly associated with Mazda. However, engineers and automotive enthusiasts have experimented with incorporating these ...

Isaac Atienza is a Filipino motoring journalist who joined TopSpeed.com in 2021. He also owns a Filpino motoring website called Go Flat Out PH and is also a contributor to a local newspaper called The ...

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 valves to ...

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Everyone generally knows about piston and rotary engines, with many a flamewar having been waged over the pros and cons of each design. The “correct” answer is thus to combine both into a single ...

Wankel rotary engines, typically but not exclusively found in Mazdas, certainly lean on the "quirkier" side of modern powertrain systems, made quirkier because most rotary-powered cars on the road ...

The rotary engine, with its egg-like block and triangular rotor, is an oddball even among all the other oddball engine designs—sorry, three-cylinder, twin-turbo, camless Koenigsegg, ya basic. That ...

In a world dominated by pistons, the rotary engine was something different for motorists. It was the vision of German engineer Felix Wankel, built on the belief that the up-and-down motion of pistons ...

LiquidPiston's XTS-210 rotary engine is about the size of a basketball but could replace generator engines several times larger. A Connecticut-based company is on contract with the Army and Air Force ...

If you’re running an army, chances are good that you need a lot of portable power for everything from communications to weapons control systems. When it comes to your generators, every ounce counts.