1、August 2013 Translation by DIN-Sprachendienst.English price group 8No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS
2、75.160.20!%($P“2050145www.din.deDDIN EN ISO 4264Petroleum products Calculation of cetane index of middle-distillate fuels by the four-variableequation (ISO 4264:2007 + Amd 1:2013);English version EN ISO 4264:2007 + A1:2013,English translation of DIN EN ISO 4264:2013-08Minerallerzeugnisse Berechnung
3、des Cetanindex von Mitteldestillat-Kraftstoffen aus der4-Parameter-Gleichung (ISO 4264:2007 + Amd 1:2013);Englische Fassung EN ISO 4264:2007 + A1:2013,Englische bersetzung von DIN EN ISO 4264:2013-08Produits ptroliers Calcul de lindice de ctane des distillats moyens par quation quatre variables(ISO
4、4264:2007 + Amd 1:2013);Version anglaise EN ISO 4264:2007 + A1:2013,Traduction anglaise de DIN EN ISO 4264:2013-08SupersedesDIN EN ISO 4264:2007-11www.beuth.deDocument comprises pagesIn case of doubt, the German-language original shall be considered authoritative.1208.13 DIN EN ISO 4264:2013-08 2 A
5、comma is used as the decimal marker. National foreword This document (EN ISO 4264:2013:2007+A1:2013) has been prepared by Technical Committee ISO/TC 28 “Petroleum products and lubricants” in collaboration with Technical Committee CEN/TC 19 “Gaseous and liquid fuels, lubricants and related products o
6、f petroleum, synthetic and biological origin” (Secretariat: NEN, Netherlands). The responsible German body involved in its preparation was the Normenausschuss Materialprfung (Materials Testing Standards Committee), Working Committee NA 062-06-42 AA Prfung von flssigen Kraftstoffen und Heizlen of the
7、 Fachausschuss Minerall- und Brennstoffnormung. Amendments This standard differs from DIN EN ISO 4264:2007-11 as follows: a) in Clause 1 “Scope”, NOTE 4 has been added; b) normative references are now undated; Previous editions DIN EN ISO 4264: 1996-12, 2007-11 EUROPEAN STANDARD NORME EUROPENNE EURO
8、PISCHE NORM EN ISO 4264 August 2007 + A1 May 2013 ICS 75.160.20 Supersedes EN ISO 4264:1996English Version Petroleum products - Calculation of cetane index of middle- distillate fuels by the four-variable equation (ISO 4264:2007 + Amd 1:2013) Produits ptroliers - Calcul de lindice de ctane des disti
9、llats moyens par quation quatre variables (ISO 4264:2007 + Amd 1:2013) Minerallerzeugnisse - Berechnung des Cetanindex von Mitteldestillat-Kraftstoffen aus der 4-Parameter-Gleichung (ISO 4264:2007 + Amd 1:2013) EN ISO 4264:2013 was approved by CEN on 2007-08-13 and Amendment A1:2013 on 2013-04-11. C
10、EN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on ap
11、plication to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC
12、Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, L
13、atvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-
14、1000 Brussels 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 4264:2007 + A1:2013 E2 DIN EN ISO 4264:2013-08 EN ISO 4264:2007 + A1:2013 (E) Contents Page Foreword to EN ISO 4264:2007 3 !Foreword to EN ISO 4264:2007/A1:2013
15、 .3 1 Scope 4 2 Normative references 5 3 Principle 5 4 Procedure .5 5 Calculation 5 6 Expression of results 6 7 Precision .6 8 Test report 7 Foreword to EN ISO 4264:2007 This document (EN ISO 4264:2007) has been prepared by Technical Committee ISO/TC 28 “Petroleum products and lubricants” in collabo
16、ration with Technical Committee CEN/TC 19 “Gaseous and liquid fuels, lubricants and related products of petroleum, synthetic and biological origin” the secretariat of which is held by NEN. This European Standard shall be given the status of a national standard, either by publication of an identical
17、text or by endorsement, at the latest by February 2008, and conflicting national standards shall be withdrawn at the latest by February 2008. This document supersedes EN ISO 4264:1996. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries
18、are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sw
19、eden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 4264:2007 has been approved by CEN as EN ISO 4264:2007 without any modification. !Foreword to EN ISO 4264:2007/A1:2013 This document (EN ISO 4264:2007/A1:2013) has been prepared by Technical Committee ISO/TC 28 “Petroleum p
20、roducts and lubricants” in collaboration with Technical Committee CEN/TC 19 “Gaseous and liquid fuels, lubricants and related products of petroleum, synthetic and biological origin” the secretariat of which is held by NEN. This Amendment to the European Standard EN ISO 4264:2007 shall be given the s
21、tatus of a national standard, either by publication of an identical text or by endorsement, at the latest by November 2013, and conflicting national standards shall be withdrawn at the latest by November 2013. Attention is drawn to the possibility that some of the elements of this document may be th
22、e subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgi
23、um, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzer
24、land, Turkey and the United Kingdom. Endorsement notice The text of ISO 4264:2007/Amd 1:2013 has been approved by CEN as EN ISO 4264:2007/A1:2013 without any modification.“ 3 DIN EN ISO 4264:2013-08 EN ISO 4264:2007 + A1:2013 (E) WARNING The use of this International Standard may involve hazardous m
25、aterials, operations and equipment. This International Standard does not purport to address all the safety problems associated with its use. It is the responsibility of the user of this International Standard to establish appropriate safety and health practices and determine the applicability of reg
26、ulatory limitations prior to use. 1 Scope 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
27、 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 fu
28、els 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 m
29、ore 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 ava
30、ilable 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 fuels sourc
31、e 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 32,5 56,5 Density at 15 C, kg/m3805,0 895,0 10 % (V/V) distillation recovery temperature, C 171 259 50 % (V
32、/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 fuel
33、s examined. Errors may be greater for fuels whose properties fall outside the recommended range of application. 4 !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.“ DIN EN IS
34、O 4264:2013-08 EN ISO 4264:2007 + A1:2013 (E) 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any a
35、mendments) applies. 3 Principle The density at 15 C and the temperatures at which 10 % (V/V), 50 % (V/V) and 90 % (V/V) are recovered (distillation recovery temperatures) are determined by standard test methods and the cetane index is calculated from these test data using known correlations. 4 Proce
36、dure 4.1 Determine the density at 15 C of the sample, to the nearest 0,1 kg/m3, by the procedure described in ISO 3675 or ISO 12185, using the corrections given in ISO 91-1 if appropriate. 4.2 Determine the temperatures, to the nearest 1 C, at which 10 % (V/V), 50 % (V/V) and 90 % (V/V) of the sampl
37、e is recovered during distillation, corrected to standard barometric pressure, by the procedure described in ISO 3405. 5 Calculation 5.1 Calculate the cetane index by one of the procedures given in 5.1.1 and 5.1.2. 5.1.1 Insert the measured values (see 4.1 and 4.2) in Equation (1) below and calculat
38、e the cetane index, CI. ( ) ( )()10 50 9022 210 9045,2 0,089 2 0,131 0,901 0,052 3 0,42 . 0,000 49 107 60NN NNNCI T B T B TTT BB=+ + + + +(1) where T10N= T10 215; T50N= T50 260; T90N= T90 310; T10is the 10 % (V/V) distillation recovery temperature, in degrees Celsius; T50is the 50 % (V/V) distillati
39、on recovery temperature, in degrees Celsius; 5 ISO 91-1!Deleted text“, Petroleum measurement tables Part 1: Tables based on reference temperatures of 15 C and 60 F ISO 3405!Deleted text“, Petroleum products Determination of distillation characteristics at atmospheric pressure ISO 3675!Deleted text“,
40、 Crude petroleum and liquid petroleum products Laboratory determination of density Hydrometer method ISO 12185!Deleted text“, Crude petroleum and petroleum products Determination of density Oscillating U-tube method DIN EN ISO 4264:2013-08 EN ISO 4264:2007 + A1:2013 (E) T90is the 90 % (V/V) distilla
41、tion recovery temperature, in degrees Celsius; B = exp ( 0,003 5DN) 1; DN= D 850; Dis the density at 15 C, in kilograms per cubic metre. 5.1.2 Use the nomographs in Figures 1, 2 and 3 to derive the cetane index as follows: a) insert the density and 50 % (V/V) distillation recovery temperature values
42、 in Figure 1 to estimate the fuel cetane index; b) insert the density and 90 % (V/V) distillation recovery temperature values in Figure 2 to determine a correction factor for deviations in these parameters from average values; c) insert the 10 % (V/V) and 90 % (V/V) distillation recovery temperature
43、 values in Figure 3 to determine a second correction factor for deviations in these parameters from average values; d) sum the correction factors from Figures 2 and 3 with the estimated cetane index from Figure 1 to give the final cetane index. 5.2 The method of using the nomography is indicated by
44、the example shown below for a fuel of cetane number 46,8. 5.2.1 Measured fuel properties Density at 15 C, kg/m3860,0 10 % (V/V) distillation recovery temperature, C 220 50 % (V/V) distillation recovery temperature, C 290 90 % (V/V) distillation recovery temperature, C 340 5.2.2 Cetane index Estimati
45、on from Figure 1 44,1 Correction from Figure 2 + 0,4 Correction from Figure 3 + 1,5 CI = 46,0 6 Expression of results Report the result to the nearest 0,1 as the cetane index by four-variable equation. 7 Precision 7.1 The calculation of the cetane index from measured density at 15 C and measured 10
46、% (V/V), 50 % (V/V) and 90 % (V/V) distillation recovery temperatures is exact. 7.2 The precision of the cetane index equation is dependent on the precision of the original density and distillation recovery temperature determinations which enter into the calculation. The precision of these determina
47、tions is stated in ISO 3675, ISO 12185 and ISO 3405. 6 DIN EN ISO 4264:2013-08 EN ISO 4264:2007 + A1:2013 (E) 8 Test report The test report shall contain at least the following information: a) a reference of this International Standard; b) the type and identification of the product tested; c) the re
48、sult of the test (see Clause 6); d) any deviation, by agreement or otherwise, from the procedure specified; e) the date of the test. 7 DIN EN ISO 4264:2013-08 EN ISO 4264:2007 + A1:2013 (E) Key CI cetane index T5050 % distillation recovery temperature, C D density at 15 C, kg/m3Figure 1 Cetane index Estimate based on density and 50 % distillation recovery temperature 8 DIN EN ISO 4264:2013-08 EN ISO 4264:2007 + A1:2013 (E) Key CIC1cetane index correction T9090 % distillation r
