【Daily Question】1.18 Fill-in-the-blank question: What is used to indicate the anti-knock property of automotive gasoline?
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This post was last edited by Catalyzing a Grain on 2016-1-25 at 16:06. Fill-in-the-blank question: The anti-knock property of automotive gasoline is expressed by ( ); are there any requirements for this in your facility? Answer: Octane rating – Correct: +2, In-depth discussion: +5 @Guan Gongyu
The anti-knock property of automotive gasoline is expressed in terms of octane rating; are there any requirements for your equipment?
Fill-in-the-blank: The anti-knock property of automotive gasoline is expressed by (octane rating).
Octane rating. -------------------------
Octane rating, research method (RON) and motor method (MON)
The anti-knock property of gasoline is expressed by the octane rating. The higher the octane rating, the better the anti-knock property. The anti-knock capacity of gasoline is related to its chemical composition. Alkanes with branches, as well as alkenes and aromatics, generally possess excellent anti-knock properties. It is specified that octane number of isooctane is 100, with good anti-knock properties ； Heptane has an octane rating of 0 and poor anti-knock properties. Gasoline octane number is determined by an octane tester. High-octane gasoline can meet the needs of gasoline engines with high compression ratios. A gasoline engine with a high compression ratio has higher thermal efficiency, which allows for fuel savings. Raising the octane rating of gasoline is primarily achieved by increasing components with high octane values, but it can also be accomplished by adding anti-knock agents such as MTBE. Gasoline grades are classified by octane rating. Gasoline octane number is a measure of the anti-knock property of gasoline in lean mixtures; numerically, it equals the volume percentage of isooctane in a standard fuel that has the same anti-knock properties as the sample under specified conditions.