DIN EN ISO 4264:2013-08

This International/European Standard (EN ISO 4264:2007 + A1:2013) contains the text of the standard ISO 4264:2007 which has been prepared by Technical Committee ISO/TC 28 "Petroleum products and lubricants" and adopted identically as a European Standard by CEN/TC 19 "Gaseous and liquid fuels, lubricants and related products of petroleum, synthetic and biological origin" (secretariat: NEN, Netherlands) as well as its Amendment 1 (ISO 4264:2007/Amd. 1:2013). The responsible German committee is Working Committee NA 062-06-42 AA "Prüfung von flüssigen Kraftstoffen und Heizölen" ("Testing of liquid fuels and fuel oils") of the Technical Standardization Committee Petroleum, Fuels, Lubricants and Related Products (FAM) of the Materials Testing Standards Committee (NMP) at DIN. This standard contains Amendment 1 which was approved by CEN on 11 April 2013. This International Standard describes a method for the calculation of the cetane index of middle-distillate fuels from petroleum-derived sources. The calculated value is termed the "cetane index by four-variable equation". Throughout the remaining text of this standard, the term "cetane index" implies "cetane index by four-variable equation". This International Standard is not applicable to fuels containing additives for raising the cetane number, nor to pure hydrocarbons, nor to distillate fuels derived from coal. It is applicable to fuels containing non-petroleum derivatives from tar sand and oil shale.