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  • BSI
    BS EN ISO 4264:2007+A1:2013, BS 2000-380:2007 Petroleum products. Calculation of cetane index of middle-distillate fuels by the four-variable equation
    Edition: 2013
    $281.30
    / user per year

Description of BS EN ISO 4264:2007+A1:2013 2013

This International Standard describes a procedure 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 International 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.

NOTE 1 This International Standard was originally developed using a matrix of fuels, some of which contain non-petroleum derivates from tar sands and oil shale. Other cetane index equations have since been developed which can be more applicable to tar sands products.

NOTE 2 The cetane index is not an alternative way to express the cetane number; it is a supplementary tool, to be used with due regard for its limitations.

NOTE 3 The cetane index is used to estimate the cetane number of diesel fuel when a test engine is not available to determine this property directly, or when insufficient sample is available for an engine rating. In cases where the cetane number of a fuel has been previously established, the cetane index can be used to verify the cetane number of subsequent samples of that fuel, provided the fuel's source and mode of manufacture remain unchanged.

NOTE 4 The cetane index method is used to estimate the cetane number of the fuel, but does not take into account the effects of cetane improver additives that may be present.

The recommended range of fuel properties for application of this International Standard is as follows:

Fuel property Recommended range
Cetane number 32,5 – 56,5
Density at 15 °C, kg/m3 805,0 – 895,0
10 % (V/V) distillation recovery temperature, °C 171 – 259
50 % (V/V) distillation recovery temperature, °C 212 – 308
90 % (V/V) distillation recovery temperature, °C 251 – 363

Within the recommended range of cetane number (32,5 to 56,5), the expected error of the prediction via the cetane index equation will be less than ± 2 cetane numbers for 65 % of the distillate fuels examined. Errors may be greater for fuels whose properties fall outside the recommended range of application.



Standard NumberBS EN ISO 4264:2007+A1:2013, BS 2000-380:2007
TitlePetroleum products. Calculation of cetane index of middle-distillate fuels by the four-variable equation
StatusWithdrawn
Publication Date2013-06-30
Withdrawn Date2018-07-24
ReplacesBS EN ISO 4264:1997
Identical National Standard OfISO 4264:2007/Amd 1:2013, EN ISO 4264:2007/A1:2013
AmendsBS EN ISO 4264:2007
DescriptorsLiquid fuels, Fuels, Distillation methods of analysis, Petroleum products, Density, Cetane, Cetane number, Mathematical calculations, Petroleum
ICS75.160.20 Liquid fuels
CommitteePTI/13
ISBN978 0 580 76801 9
PublisherBSI
Pages12

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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