(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.
Octane rating or octane number is a standard measure of the performance of an
engine or aviation fuel. The higher the octane number, the more compression ...
Different vehicles need a different level of octane. Learn more about octane
ratings and why some engines need high octane gas to run properly.
What are octane ratings? Octane ratings measure a gasoline's ability to resist
engine knock — a rattling or pinging sound ...
Gasoline is most often produced by the fractional distillation of petroleum , also known as crude oil (it is also produced from coal and oil shale). In cracking, high molecular weight fractions and catalysts are heated to the point where the carbon-carbon bonds break. ... More »
Definition of Octane number: Measure of the ignition quality of gas (gasoline or
petrol). Higher this number, the less susceptible is the gas to 'knocking' ...
During World War I, it was discovered that adding a chemical called tetraethyl
lead (TEL) to gasoline significantly improved the gasoline's octane rating. See
Sep 17, 2012 ... That is done these days primarily to boost the fuel's octane rating. A higher
octane rating allows an engine to use a compression ratio of, say, ...
Sep 30, 2011 ... What's the difference between premium and regular fuel? What does that octane
rating number represent? This video explains why cars with ...
A gasoline's octane number is a measure of its ability to resist knocking as it
burns in the combustion chamber of an engine. A spark from the spark plug starts