octane rating
21octane number — (also octane rating) noun a figure indicating the anti knock properties of a fuel, based on a comparison with a mixture of isooctane and heptane …
22octane number — noun a measure of the antiknock properties of gasoline • Syn: ↑octane rating • Hypernyms: ↑measure, ↑quantity, ↑amount …
23Octane (album) — Octane Studio album by Spock s Beard Released February 1, 2005 Recorded 2005 …
24rating — n. classification limit 1) a high; low rating 2) a credit; efficiency; octane; power rating ordinary seaman (BE) 3) a naval rating * * * [ reɪtɪŋ] efficiency low rating octane power rating [ classification ] [ lim …
25octane 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… …
26rating — i. An authorization entered on a license and forming a part, thereof, stating special conditions, privileges, and limitations pertaining to the license. ii. An endorsement to the pilot’s license that defines additional qualifications, privileges …
27octane — n. a colourless inflammable hydrocarbon of the alkane series. Usage: Chem. formula: C8H18 Phrases and idioms: high octane (of fuel used in internal combustion engines) having good antiknock properties, not detonating readily during the power… …
28Octane — A flammable liquid hydrocarbon found in petroleum. Used as a standard to measure the anti knock properties of motor fuel. U.S. Dept. of Energy, Energy Information Administration s Energy Glossary *** A rating scale used to grade gasoline… …
29knock rating — The standard scale of resistance to knock (the ability of fuel to remain at high temperatures and pressures without causing detonation) of reciprocating engine fuels, measured relative to iso octane. It is expressed as a percentage by volume of… …
30iso-octane — A paraffin hydrocarbon fuel, defined as 2,2,4 trimethylpentane, which is used as a standard in the rating of fuels. This knock quality of fuel is expressed as a percentage by volume of iso octane in a mixture with normal heptane that has the same …
