Although we had seen numerous drawings and read many stories about Wankel engines over the years, it really took a first-hand trip, personal handling of the parts, and talks with the D-B engineers ...

Mazda was an early and steadfast proponent of the Wankel engine. It signed a development contract with NSU in 1959 and displayed its 2-rotor and 4-rotor Wankel engines at the 1964 Tokyo Motor Show.

The engine's main advantage is a greater power density than a Wankel can achieve because a more-balanced design allows the motor to rev higher—so says Peter King, one of two partners at REDA.

There’s a new spin on the rotary engine. Liquid Piston, a Connecticut-based engineering firm, has turned the classic Wankel engine design inside out to create a more efficient, and cleaner ...

One of the rotary engine's biggest champions, AIE has been advancing rotary design since 2012. Its latest release shows that Wankel engines can be a perfect fit for compact, power-demanding ...

The Wankel rotary engine is one of the most unique and innovative engine designs ever created. Unlike the conventional piston engine that relies on reciprocating motion, the Wankel rotary engine ...

So, a Wankel engine needs constant oil top-ups while dealing with the products of that burnt oil. And those apex seals wear down. "[The Wankel] has this long, skinny, moving combustion chamber.

Though the rotary diesel never really got beyond the prototype stage of development in the past, the concept has merit. It's a lightweight, compact engine with a good power-to-weight ratio.

Felix Wankel, a German engineer who invented the rotary engine, is born on Aug. 13, 1902, in Lahr, Germany. Wankel, a gifted mathematician with a knack for technical drawing, became fascinated ...