determining octane rating

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• Octane rating —   A number used to indicate gasoline s antiknock performance in motor vehicle engines. The two recognized laboratory engine test methods for determining the antiknock rating, i.e., octane rating, of gasolines are the Research method and the Motor …   Energy terms

• octane number — Every brand of gasoline has an octane rating or number which indicates its ability to resist knocking. When the numbers were first developed, the researchers found that normal heptane (a hydrocarbon) had almost no ability to resist knocking so… …   Dictionary of automotive terms

• Tetra-ethyl lead — Chembox new Name = Tetra ethyl lead ImageFile = Tera ethyl lead chemical.png IUPACName = tetraethyllead, tetraethylplumbane OtherNames = TEL; lead tetraethyl; tetra ethyl lead Section1 = Chembox Identifiers SMILES = CC [Pb] (CC)(CC)CC CASNo = 78… …   Wikipedia

• Chevrolet Volt — Manufacturer Chevrolet division of General Motors Also called Holden Volt Opel Ampera Vauxhall Ampera …   Wikipedia

• Engine knocking — Pinging redirects here. For other uses, see Ping (disambiguation). Knocking (also called knock, detonation, spark knock, pinging or pinking) in spark ignition internal combustion engines occurs when combustion of the air/fuel mixture in the… …   Wikipedia

• Grade — NOTOC Grade may refer to:In education* Grade (education), a teacher s evaluation of a student s performance * Grade level, the numbering of the year a student has reached in school.In civil engineering* Grade (slope), the pitch of a slope such as …   Wikipedia

• Liquefied petroleum gas — (also called LPG, GPL, LP Gas, or liquid propane gas) is a flammable mixture of hydrocarbon gases used as a fuel in heating appliances and vehicles. It is increasingly used as an aerosol propellant and a refrigerant, replacing chlorofluorocarbons …   Wikipedia

• Cetane number — or CN is a measurement of the combustion quality of diesel fuel during compression ignition. It is a significant expression of diesel fuel quality among a number of other measurements that determine overall diesel fuel quality. Contents 1… …   Wikipedia

• Narc (film) — Narc Theatrical poster Directed by Joe Carnahan Produced by Ray Liotta …   Wikipedia

• performing arts — arts or skills that require public performance, as acting, singing, or dancing. [1945 50] * * * ▪ 2009 Introduction Music Classical.       The last vestiges of the Cold War seemed to thaw for a moment on Feb. 26, 2008, when the unfamiliar strains …   Universalium