单词 | otto engine |
释义 | > as lemmasOtto engine 1. attributive. Designating (a) the four-stroke cycle employed in most petrol and gas engines, of which the four stages are ideally characterized as adiabatic compression, heat addition at constant volume, adiabatic expansion, and heat loss at constant volume; (b) an engine employing this cycle. Frequently in Otto cycle, Otto engine.This cycle was first described by A. Beau de Rochas in 1862, but Otto was the first to build an engine employing it (in 1876) after conceiving the idea independently. ΘΚΠ society > occupation and work > equipment > machine > machines which impart power > engine > internal-combustion engine > [noun] > engine employing specific cycle Otto engine1878 Otto1886 two-stroke1963 society > occupation and work > equipment > machine > machines which impart power > engine > internal-combustion engine > [noun] > engine employing specific cycle > cycle of Otto cycle1878 1870 Rep. U.S. Commissioners Paris Universal Expos. 1867 iii. 60 (heading) Otto & Langen's gas-engine.] 1878 Sci. Amer. 30 Mar. 195/1 The new Otto horizontal gas engine..closely resembles the ordinary horizontal steam engine. 1885 W. Macgregor Gas Engines ii. 81 The original and classic type of the Otto engine has received improvements at the hands of both its German and English manufacturers. 1886 D. Clerk Gas Engine vii. 183 The indicator diagrams prove the very efficient nature of the Otto cycle. 1930 Engineering 7 Feb. 186/1 Theoretically, the Otto cycle..promised higher efficiencies than the constant-pressure Diesel cycle. 1966 McGraw-Hill Encycl. Sci. & Technol. (rev. ed.) VII. 201/1 For an Otto engine, an increase in either the air temperature or density increases the tendency of the engine to knock. 1997 BBC Top Gear Mag. Nov. 13/4 By adding an electric motor and a ultra-capacitor, Honda has turned the one-in-four power stroke of the Otto cycle into a four-in-four system. < as lemmas |
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