The Honda Chimney Engine represents a bold leap forward in engine technology, integrating a valve within the piston and ...

The rotary engine may have mostly been abandoned for the piston design found in most conventional car engines, but a couple ...

Automakers are in an era in which an engine can't change much from a generation to the next one - but this rotary motor beats ...

On this feature of the FRAME, we explore the Production line of rotary engines Mazda MX-30. Check out how these ...

In 1954, Wankel finished designing a rotary piston engine for NSU known as the Drehkolbenmotor (or the DKM). This rotary-valve-controlled 250cc motorcycle engine was based on the company's Lux and ...

Every story dealing with a new rotary engine from Mazda lands in a different place on the matrix of possibilities between "Coming soon!" and "Never gonna happen!" In 2011 it was speculated that ...

A new rotary engine for Mazda sports cars is entering development, and could bring all sorts of groundbreaking tech to the RX-7's successor.

Codenamed R130 and marketed as the Luce Rotary Coupe, the new model was powered by a 1.3-liter 13A Wankel engine that made a healthy 124 hp.

Felix Wankel’s rotary engine is an engineering marvel because of its simplicity. Rather than the conventional pistons, camshafts, valves, and lifters, his design has a roughly triangular-shaped ...

Another day, another Mazda rotary engine story, except this time, it’s from the automaker itself instead of a third-party speculator. Mazda announced a new ...

The engine itself features a novel design that's kind of like an inside-out Wankel rotary engine, and delivers a jaw-dropping power density of up to 1.5 horsepower per pound.