antiknock quality

См. также в других словарях:

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• octane number — (of gasoline) a designation of antiknock quality, numerically equal to the percentage of isooctane by volume in a mixture of isooctane and normal heptane that matches the given gasoline in antiknock characteristics. Also called octane rating.… …   Universalium

• octane number — oc′tane num ber n. chem. a designation of antiknock quality of gasoline, numerically equal to the percentage of isooctane by volume in a mixture of isooctane and normal heptane that matches the given gasoline in antiknock characteristics. Also… …   From formal English to slang

• octane number — /ˈɒkteɪn nʌmbə/ (say oktayn numbuh) noun (of a grade of petrol) a designation of antiknock quality, numerically equal to the percentage of iso octane by volume in a mixture of iso octane and normal heptane that matches the given grade of petrol… …  

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• catalytic reforming — A catalytic process to improve the antiknock quality of low grade naphthas and virgin gasolines by the conversion of naphthenes and paraffins into higher octane aromatics such as benzene, toluene and xylenes …   Petroleum refining glossary

• octane number — 1. A measure of petrol s resistance to pre ignition or pinking , which is the sound made by an engine when pre ignition occurs, particularly at low revs and high load. Two measures are used, for low speed and high speed pre ignition. ULSP in the… …   Petroleum refining glossary

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