The internal combustion engine, for all its mechanical sophistication, still runs on a 19th-century mechanical idea: pistons ...

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.

Throughout motorcycle history, there have always been builders who try to push the envelope and do something different. Countless designers have been drawn by the allure of diesel engines and Wankel ...

Wankel rotary engine powered thousands of aircraft. One of several problems: It spewed castor oil on its pilots.