All Wankel engines are rotaries, but not all rotaries are Wankels

The Wankel engine powered the Mazda RX-7 to fame, but other pistonless rotary designs reveal why the category is broader than ...
The Atlantic

An Entirely New Engine

TWENTY-FIVE years ago, a German book salesman named Felix Wankel entertained a revolutionary, if not heretical notion: he fell to wondering if the standard gasoline engine, man’s commonest prime mover ...
SlashGear

Why Rotary Engines Use Two Different Spark Plugs

When it comes to unconventional engine design, few exceed the Wankel rotary in terms of weirdness. Despite that, the same basic principles of internal combustion apply here: Fuel and air are mixed and ...
Jalopnik

Why Mazda Built The Three-Rotor 20B Engine (And Used It Just Once)

Mazda made a splash in the market in 1990, launching the Eunos Cosmo with the three-rotor 20B engine. Compared with contemporary Wankel rotary engines, the 20B's extra rotor beefed the compact ...

Mazda Built The World's Only Rotary Minibus, Then Bolted On A Second Engine Just For The AC

When we think about Mazda's Wankel rotary engine and the models it was used in, images of the RX-7, RX-8, and Cosmo likely ...
SlashGear

Did Audi Build The First Rotary Engine Car? The Story Of The NSU Spider

When most people hear the term "rotary engine," they probably think of Mazda first, as rotary engines have been part and parcel of the Japanese automaker's mantra for decades. In fact, Mazda proclaims ...
AOL

Why Rotary Engines Use Two Different Spark Plugs

Mazda 13B rotary engine in a white Mazda RX-7 engine bay. - TTTNIS/Wikimedia Commons When it comes to unconventional engine design, few exceed the Wankel rotary in terms of weirdness. Despite that, ...