- Nicolaus Otto
Infobox Person
name = Nicolaus Otto
image_size = 180px
caption = Nikolaus Otto
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birth_date =June 14 ,1832
birth_place =Holzhausen an der Haide
death_date =January 26 ,1891
death_place =Cologne
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nationality = German
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known_for =internal-combustion engine
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occupation =inventor
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footnotes = Nicolaus August Otto (June 14 ,1832 Holzhausen an der Haide , Nassau -January 26 ,1891 Cologne ) was the Germaninventor of the firstinternal-combustion engine to efficiently burn fuel directly in a piston chamber. Although other internal combustion engines had been invented (e.g. byÉtienne Lenoir ) these were not based on four separate strokes. The concept of four strokes is likely to have been around at the time of Otto's invention but he was the first to make it practical. [http://www.ipaustralia.gov.au/pdfs/patentsmanual/WebHelp/National/Novelty/2.4.6.4_Mere_Paper_Anticipations.htm]The Otto cycle
The
Otto engine was designed as a stationary engine and in the action of the engine, the stroke is an upward or downward movement of a piston in a cylinder. Used later in an adapted form as anautomobile engine , four up-down strokes are involved: (1) downward "intake" stroke—coal-gas and air enter the piston chamber, (2) upward "compression" stroke—the piston compresses the mixture, (3) downward "power" stroke—ignites the fuel mixture by electric spark, and (4) upward "exhaust" stroke—releases exhaust gas from the piston chamber. Otto only sold his engine as a stationary motor.Earlier patents
[
Otto engines running at the Western Minnesota Steam Threshers Reunion (WMSTR ), in Rollag, Minnesota. (2min 16sec, 320x240, 340kbps video)]According to recent historical studies, the Italian inventors
Eugenio Barsanti andFelice Matteucci patented a first working efficient version of an internal combustion engine in 1854 inLondon (pt. Num. 1072). It is claimed that the Otto engine is in many parts at least inspired from this precedent invention [http://www.barsantiematteucci.it] , but, as yet there is no documentation of knowledge about the Italian engine by Otto.ee also
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History of the internal combustion engine External links
* -- 1877
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