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The Wankel engine is a rotary gasoline engine designed by the German engineer Felix Wankel (Felix Wankel, 1902-1988) in the 1950s. It works on the same principle as a four-stroke gasoline engine, but the strokes pass in different sectors of the chamber in the space between the engine walls and the triangular piston-rotor. The Wankel engine has a simpler design and smaller dimensions than a piston four-stroke engine, when using it, the rotational energy occurs immediately (without the involvement of the crankshaft). The special feature of the engine is the use of a three-sided rotor (piston) in the form of a Reault triangle, which rotates inside a cylinder of a special profile, the surface of which is made of an epitrochoid (other shapes of the rotor and cylinder are also possible. In a Wankel engine, the work cycle is exactly the same as in a classic four-stroke unit internal combustion: intake, compression, working stroke and exhaust. Only the piston does not make two strokes up and down (back and forth), but the shaft makes only one revolution inside the epitrochoidal cylinder chamber, which is the heart of the engine : https://www.facebook.com/profile.php?.... / romaniv_2809 / mechanics_ukr