You'd think measuring an engine's displacement would be simple, but there's a long history of trying to figure out how to ...

In order to understand the value of the correct spark plugs in a rotary engine, you first must understand a bit of how a ...

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, ...

Reading over the 25 -page document, Mazda describes how a rotary engine is better suited for a hybrid layout over a traditional piston-driven ICE unit. Because of its compact nature, the rotary engine ...

Editor's note: This story is part of a special section on the 100th anniversary of Mazda to be published in the Jan. 27 print edition of Automotive News. In the mid-1960s, Japanese goods such as ...

Although it showed plenty of promise during development, the rotary engine was never widely used. Rotary (or Wankel) engines are renowned for smoothness, but they chew through fuel and lack torque ...

Everyone generally knows about piston and rotary engines, with many a flamewar having been waged over the pros and cons of each design. The “correct” answer is thus to combine both into a single ...