Yes, there is a 12-rotor engine — here's how much HP it's trying to push

Could there possibly be a rotary engine with 12 rotors? The answer is yes, and here's everything we know about it including ...
SlashGear

Do Rotary Engines Have Valves? Here's How They Work

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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Pros and cons of the rotary engine

Not every engine has a set of pistons that move up and down in a cylinder. The Wankel, or rotary engine, delivers its power with rotational force rather than a reciprocating mass that hammers out ...
Autoblog

The Engine That Almost Killed Mazda — and Why It’s Still Alive Today

The rotary was the most radical rethink of the combustion engine in over a hundred years — and it paid the price for being different. Mazda introduced the innovative Wankel rotary engine in the 1967 ...
AOL

This Single-Rotor Turbo Mazda Miata Makes More Power Than It Has Any Right To

In its standard form, the Mazda 13B Rotary engine has two rotors that make a distinct 'brap-brap' while at idle, and a 9,000 RPM scream on full tilt. It's a two-stroke dream of an engine with a cult ...