Octane number

Octane number

A numerical measure of the antiknock properties of gasoline used as a motor fuel. The higher the octane number, the greater the antiknock properties.

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Part of Speech: noun
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Industry/Domain: Pollution control
Category: Air pollution
Company: ARB
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octane number

Pollution control; Air pollution

A numerical measure of the antiknock properties of gasoline used as a motor fuel. The higher the octane number, the greater the antiknock properties.

octane number

Energy; Energy trade

A measure of the detonative quality of gasoline, or otherwise expressed its tendency to cause "engine knock. " The higher the octane number, the higher the resistance to engine ...

octane number

Automotive; Automobile

Measure of the anti-knock qualities of a gasoline fuel.

octane number

Science; General science

A standard laboratory measure of a fuel's ability to resist knock during combustion in a spark-ignition engine. A single-cylinder four-stroke engine of standardized design is used ...

octane number

Materials science; Material physics

Provides an empirical measure of the ability of a fuel to resist pre-ignition in an internal combustion engine (also known as knocking). It is the volume percentage of isooctane ...

motor octane number

Automotive; Automobile

Measure of the anti-knock rating of gasoline.

lead

Pollution control; Air pollution

A gray-white metal that is soft, malleable, ductile, and resistant to corrosion. Sources of lead resulting in concentrations in the air include industrial sources and crustal ...

nonattainment area

Pollution control; Air pollution

A geographic area identified by the U. S. EPA and / or CARB as not meeting either NAAQS or CAAQS standards for a given pollutant. For more information, please view our designated ...

air toxics

Pollution control; Air pollution

A generic term referring to a harmful chemical or group of chemicals in the air. Substances that are especially harmful to health, such as those considered under U. S. EPA's ...

nitrogen oxides

Pollution control; Air pollution

A general term pertaining to compounds of nitric oxide (NO), nitrogen dioxide (NO 2 ) and other oxides of nitrogen. Nitrogen oxides are typically created during combustion ...

primary standard

Pollution control; Air pollution

A dosage of air pollution scientifically determined to protect against human health effects such as asthma, emphysema, and cancer.

propellant

Pollution control; Air pollution

A gas with a high vapor pressure used to force formulations out of aerosol spray cans. Among the gases used are butanes, propanes and nitrogen.

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