Wankel engine


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Related to Wankel engine: rotary engine

Wankel engine:

see internal-combustion engineinternal-combustion engine,
one in which combustion of the fuel takes place in a confined space, producing expanding gases that are used directly to provide mechanical power.
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Wankel Engine

 

a rotary-piston internal-combustion engine whose design was developed in 1957 by F. Wankel (Federal Republic of Germany), an engineer. A special feature of the engine is the use of a turning rotor (piston) mounted in a casing whose surface has the shape of an epitrochoid. The shaft-mounted rotor is rigidly joined to a gear that meshes with a stationary pinion. The rotor and gear rotate around the piston. During rotation the rotor apexes slide along the epitrochoidal surface of the casing and cut off the variable volumes of the chambers in the casing. Such a design makes it possible to achieve a four-stroke cycle without the use of a special gas distribution device. Sealing of the chambers is provided by radial and face sealing vanes, which are pressed to the cylinder by centrifugal force, gas pressure, and band springs. Carburetion, ignition, lubrication, cooling, and starting are basically similar to the ordinary piston-type internal-combustion engine.

Trihedral-rotor engines with a pinion and gear radius ratio of r:R = 2:3 have found practical application in automobiles, boats, and so on.

The weight and dimensions of the Wankel engine are two to three times less than a corresponding conventional internal-combustion engine system with equivalent horsepower. Wankel engines are being manufactured in the Federal Republic of Germany, Japan, and the USA.

V. V. KULESHOV

Wankel engine

[′väŋ·kəl ‚en·jən]
(mechanical engineering)
An eccentric-rotor-type internal combustion engine with only two primary moving parts, the rotor and the eccentric shaft; the rotor moves in one direction around the trochoidal chamber containing peripheral intake and exhaust ports. Also known as rotary-combustion engine.
References in periodicals archive ?
A modified small scale internal combustion Wankel engine is used as a steam expander.
Whereas the Wankel engine executes the 4-stroke cycle while moving the charge over different parts of the engine, the X engine executes the three 4-stroke cycles simultaneously in three independent combustion chambers.
--high noise level compared with four-stroke and Wankel engines.
In figure 1 we can see a housing from a Wankel engine, having the following constructive
The Wankel Engine: Design, Development, Applications.
"It's built like the Wankel engine, with a shaft spinning in the center."
A Wankel engine has most of the attributes of a turbine engine at one-tenth to one one-hundredth of the cost."
The Twin-rotor Wankel engine enabled the car to use a high level of revs to achieve its maximum speed.
A colleague, with whom I recently corresponded, put it very well when he described gallium arsenide as the Wankel engine of the semiconductor industry!
The Wankel engine delivers around 250bhp, with a 50bhp boost from a single electric motor.
Big businesses tried to introduce the Wankel engine, the gas turbine, the Stirling engine and the two-stroke.
There have been problems with sealing and emissions in the past but Austro Engines of Austria demonstrated its Wankel engine at the Paris Air Show in 2011 in what was claimed to be the world's first aircraft with a serial hybrid electric drive system employing an internal combustion engine.