Otto cycle

Otto cycle
Otto cycle Ot"to cy`cle (Thermodynamics) A four-stroke cycle for internal-combustion engines consisting of the following operations: First stroke, suction into cylinder of explosive charge, as of gas and air; second stroke, compression, ignition, and explosion of this charge; third stroke (the working stroke), expansion of the gases; fourth stroke, expulsion of the products of combustion from the cylinder. This is the cycle invented by Beau de Rochas in 1862 and applied by Dr. Otto in 1877 in the Otto-Crossley gas engine, the first commercially successful internal-combustion engine made. [Webster 1913 Suppl.]

The Collaborative International Dictionary of English. 2000.

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  • Otto cycle — A thermodynamic cycle for the conversion of heat into work, consisting of two isentropic phases interspersed between two constant volume phases. It is the four stroke cycle of operation that produces the power within the cylinders of an internal… …   Aviation dictionary

  • otto cycle — Four stroke cycle consisting of the intake, compression, firing, and exhaust strokes, in honor of Otto Benz, the inventor. Also see four stroke cycle engine. It was named after the German engineer Dr. Nikolaus Otto (1832 1891) who first patented… …   Dictionary of automotive terms

  • otto cycle — ˈäd.(ˌ)ō, ˈä(ˌ)tō noun Usage: usually capitalized O Etymology: after Nikolaus A. Otto died 1891 German technician and inventor : a four stroke cycle for internal combustion engines of the type used in automobiles wherein the first stroke consists …   Useful english dictionary

  • Otto cycle — Thermodynam. an idealization of the thermodynamic cycle of the internal combustion engine with air as the working substance: intake of air at atmospheric pressure, then adiabatic compression, then ignition with an increase of pressure and… …   Universalium

  • Otto cycle — /ˈɒtoʊ saɪkəl/ (say otoh suykuhl) noun the working cycle of a four stroke internal combustion engine. {named after NA Otto, 1832–91, German engineer} …   Australian English dictionary

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  • Otto (surname) — Otto is a surname, and may refer to Catherine Otto, author of echocardiography textbooks Dr. Douglas Otto, American school superintendent Felix Otto (born 1966), German mathematician Frei Otto (born 1925), German architect Gustav Otto (1883–1926) …   Wikipedia

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