Wankel engine

American  

noun

1. an internal-combustion rotary engine that utilizes a triangular rotor that revolves in a chamber (rather than a conventional piston that moves up and down in a cylinder): it has fewer moving parts and is generally smaller and lighter for a given horsepower.

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Wankel engine British  

/ ˈwæŋkəl /

noun

1. a type of four-stroke internal-combustion engine without reciprocating parts. It consists of one or more approximately elliptical combustion chambers within which a curved triangular-shaped piston rotates, by the explosion of compressed gas, dividing the combustion chamber into three gastight sections

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Etymology

Origin of Wankel engine

Named after F. Wankel

Example Sentences

At the time, nearly half of Mazda's vehicles used the revolutionary Wankel engine, in which a rotor instead of pistons produces the power.

From Time Magazine Archive

Even though Mazda's rotary Wankel engine was initially dirtier than the conventional reciprocating engine, the Japanese firm managed to control its emissions by installing a thermal reactor that burns the noxious gases.

From Time Magazine Archive

The notable results include the RX-7 sports car, which gets about 24 m.p.g. from its improved Wankel engine, and the GLC.

From Time Magazine Archive

Because of its basic simplicity, the Wankel engine has long been considered a strong contender to supplant piston engines in mass-produced autos.

From Time Magazine Archive

Because of the unavailability of the light-weight Wankel engine that had been planned for the car, the Pacer is still 3,000 Ibs.

From Time Magazine Archive