The ISO 4264 standard developed by the International Standards Organization (ISO) defines a procedure for calculating the cetane index of medium distilled fuels obtained from petroleum-derived sources. The calculated value is called the cetane index with the four-variable equation. The expression cetane index briefly expresses the cetane index with a four-variable equation.
The ISO 4264 standard applies to fuels containing non-petroleum derivatives from tar sand and oil shale. It does not apply to pure hydrocarbons or distilled fuels from coal. Cetane index calculations do not take into account the effects of additives used to raise the cetane number. The cetane index is not an alternative way of expressing the cetane number, it is a complementary tool used with its limitations in mind.
The most suitable fuel properties for the application of this standard are as follows:
In principle, the density at 15 degrees and the distillation recovery temperatures of 10, 50 and 90 percent are determined by standard test methods and cetane, and The cetane index is calculated from these test data using known correlations.
The calculation of the cetane index from the measured density at 15 degrees and the measured 10, 50 and 90 percent distillation recovery temperatures is precise. The precision of the cetane index equation depends on the precision of the original density and distillation recovery temperature determinations that entered the calculation. The precision of these determinations is described in ISO 3675, ISO 12185 and ISO 3405 standards.
In short, the cetane index is a figure that shows the quality of a diesel fuel depending on its density and volatility and is approximately close to the cetane number. Both are petroleum productsIt is a measure of their effectiveness.
Among the numerous test, measurement, analysis and evaluation studies it provides for businesses in various sectors, our organization also provides test services for the calculation of the cetane index of medium distilled fuels with four variable equations within the scope of ISO 4264 standard, with its trained and expert staff and advanced technological equipment.
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