For more than a decade the name Wankel has popped up whenever car enthusiasts start talking about advanced-design automotive powerplants. The theory of the Wankel engine goes back to 1954 when Dr.

In theory, Wankel-style rotary internal combustion engines have many advantages: they ditch the cumbersome crankcase and piston design, replacing it with a simple, single-chamber design and a thick, ...

The new Vision X-Coupe Concept features a new range-extended Wankel rotary-powered drivetrain capable of capturing CO2 so that it can leave the air cleaner, “the more you drive.” Mazda revealed the ...