What does ronroz95 mean?

1 Answers
VonHarper
07/30/25 9:28am
ROZ stands for octane number, which is usually labeled as min.ron/roz or ron/roz. The complete meaning is the minimum octane number or octane number requirement. This requirement means that the car needs to use fuel with a standard no lower than 95, and roz95 is not equal to 97. Extended information: The octane number is a value obtained by comparing actual gasoline with a standard fuel artificially mixed. The standard fuel has two components: one is isooctane with very good anti-knock performance, and the other is n-heptane with very poor anti-knock performance. The value of isooctane is set to 100, and the value of n-heptane is set to 0. By adjusting the proportion of the two mixtures in the standard gasoline through experiments to achieve the same anti-knock performance as the actual gasoline, this proportion is the octane number.
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