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Norm
ÖNORM EN ISO 4264
Issue date: 1997 05 01
Petroleum products - Calculation of cetane index of middle-distillate fuels by the four-variable equation (ISO 4264:1995)
This International Standard describes a procedure for the calculation of the cetane index of middle-distillate fuels from petroleum-derived sources. The calculated value ...
Withdrawn: 2008 02 01
Publisher:
Austrian Standards International
Format:
Digital | 9 Pages
Language:
German
| English
Currently valid:
Optionally co-design standards:
ICS
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 will imply 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. lt is applicable to fuels containing non-Petroleum derivatives from tar Sands and oil shale.
NOTES
1 This International Standard was originally developed using
a matrix of fuels, some of which contained non- Petroleum derivatives from tar Sands and oil shale. Other cetane index equations have since been developed which may be more applicable to tar Sands products.
2 Cetane index is not an alternative way to express cetane
number; it is a supplementary tool, to be used with due regard
for its limitations.
3 Cetane index is used Po 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, cetane index may be used to verify the cetane number of subsequent samples of that fuel, provided the fuels Source and mode of manufacture remain unchanged.
The recommended range of fuel properties for application of this International Standard is as follows:
Fuel property
Recommended
range
Cetane number
Density at 15 C, kg/m3
10 % (VW) distillation recovery
temperature, C
50 % (WV) distillation recovery
temperature, C
90 % (WV) distillation recovery
temperature, C
32,5 - 56,5
805,O - 895,0
171 -259
212 - 308
251 - 363
Within the recommended range of cetane numb (. (...abbreviated)
ÖNORM EN ISO 4264
2018 10 01
Petroleum products - Calculation of cetane index of middle-distillate fuels by the four variable equ...
Norm
ÖNORM EN ISO 4264
2013 08 01
Petroleum products - Calculation of cetane index of middle-distillate fuels by the four-variable equ...
Norm
ÖNORM EN ISO 4264
2008 02 01
Petroleum products - Calculation of cetane index of middle-distillate fuels by the four-variable equ...
Norm
ÖNORM EN ISO 4264
1997 05 01
Petroleum products - Calculation of cetane index of middle-distillate fuels by the four-variable equ...
Norm
↖
Norm
Issue date :
2008 02 01
Petroleum products - Calculation of cetane index of middle-distillate fuels by the four-variable equation (ISO 4264:2007)
Norm
Issue date :
1995 09 21
Petroleum products — Calculation of cetane index of middle-distillate fuels by the four-variable equation