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A Correlation of the Effects of Compression Ratio and Inlet-air Temperature on the Knock Limits of Aviation Fuels in a CFR Engine - 2

Henry E. AlquistLeon O'DellJohn C. Evvard

出版	National Advisory Committee for Aeronautics, 1946
URL	http://books.google.com.hk/books?id=PHgqerGo5b0C&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN

註釋The knock-limited performance of nine fuels, comprising isolated members of four classes of hydrocarbons, paraffins, cycloparaffins, and olefins), is presented in the form of three-dimensional plots of fuel-air ratio, compression temperature, and compression-air density. The plots are based on a correlation that is shown to apply for these fuels over a wide range of compression that is shown to apply for these fuels over a wide range of compression ratios and inlet-air temperatures. The significance of the term "temperature sensitivity" is sketched, and it is emphasized that no generalized number such as octane number can be applied even to members of a given class of hydrocarbons when broad ranges of engine severity are encountered.