1、Petroleum and related products Determination of the shear stability of polymer-containing oils using a diesel injector nozzleBS EN ISO 20844:2015BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 20844 September 2
2、015 ICS 75.080 Supersedes EN ISO 20844:2004English Version Petroleum and related products - Determination of the shear stability of polymer-containing oils using a diesel injector nozzle (ISO 20844:2015) Ptrole et produits connexes - Dtermination de la stabilit au cisaillement de fluides contenant d
3、es polymres au moyen dun injecteur pour moteur diesel (ISO 20844:2015) Minerallerzeugnisse und verwandte Produkte - Bestimmung der Scherstabilitt von polymerhaltigen len mit Hilfe einer Diesel-Einspritzdse (ISO 20844:2015) This European Standard was approved by CEN on 22 August 2015. CEN members are
4、 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 application to t
5、he 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 Management Cen
6、tre 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, Latvia, Lithuan
7、ia, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey andUnited Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-100
8、0 Brussels 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 20844:2015 ENational forewordThis British Standard is the UK implementation of EN ISO 20844:2015. It is identical to ISO 20844:2015. It supersedes BS EN ISO 20844:
9、2004 , which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee MCE/18/-/16, Hydraulic fluids.A list of organizations represented on this committee can be obtained on request to its secretary.The UK committee draws the readers attention to the omission of refer
10、ences to reagents in the text and an error in Figure A.1, detailed in Annex A, where Item 17 in the Key to the diagram should read: Atomization chamber drain tube.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct applicatio
11、n. The British Standards Institution 2017 Published by BSI Standards Limited 2017ISBN 978 0 580 84329 7ICS 75.080Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Standards Policy and Strategy Committee on
12、 31 July 2017.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN ISO 20844:2015EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 20844 September 2015 ICS 75.080 Supersedes EN ISO 20844:2004English Version Petroleum and related products - Determination of the
13、 shear stability of polymer-containing oils using a diesel injector nozzle (ISO 20844:2015) Ptrole et produits connexes - Dtermination de la stabilit au cisaillement de fluides contenant des polymres au moyen dun injecteur pour moteur diesel (ISO 20844:2015) Minerallerzeugnisse und verwandte Produkt
14、e - Bestimmung der Scherstabilitt von polymerhaltigen len mit Hilfe einer Diesel-Einspritzdse (ISO 20844:2015) This European Standard was approved by CEN on 22 August 2015. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this Europe
15、an 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 application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions
16、(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 Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belg
17、ium, 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, Switze
18、rland, Turkey andUnited Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national
19、Members. Ref. No. EN ISO 20844:2015 EBS EN ISO 20844:2015EN ISO 20844:2015 (E) 2 Contents Page European foreword . 3 ISO 20844:2015(E)Foreword iv1 Scope . 12 Normative references 13 Terms and definitions . 14 Principle 25 Reagents and materials . 26 Apparatus . 26.1 Test rig 26.2 Viscosity measuring
20、 apparatus . 27 Samples and sampling 28 Preparation of test rig . 39 Referencing 410 Procedure. 411 Calculation 512 Expression of results 513 Precision . 513.1 General . 513.2 Repeatability . 513.3 Reproducibility . 614 Test report . 6Annex A (normative) Test rig . 7Bibliography .10 ISO 2015 All rig
21、hts reserved iiiContents PageBS EN ISO 20844:2015ISO 20844:2015(E)Foreword iv1 Scope . 12 Normative references 13 Terms and definitions . 14 Principle 25 Reagents and materials . 26 Apparatus . 26.1 Test rig 26.2 Viscosity measuring apparatus . 27 Samples and sampling 28 Preparation of test rig . 39
22、 Referencing 410 Procedure. 411 Calculation 512 Expression of results 513 Precision . 513.1 General . 513.2 Repeatability . 513.3 Reproducibility . 614 Test report . 6Annex A (normative) Test rig . 7Bibliography .10 ISO 2015 All rights reserved iiiContents PageBS EN ISO 20844:2015ISO 20844:2015(E)Fo
23、rewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a tech
24、nical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
25、 electrotechnical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document
26、was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives). Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such p
27、atent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents). Any trade name used in this document is information given for the convenience of users and does n
28、ot constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary informatio
29、nThe committee responsible for this document is ISO/TC 28, Petroleum products and related products of synthetic or biological origin.ISO Technical Committee ISO/TC 28 acknowledges permission granted by Co-ordinating European Council to reproduce selected parts of CEC Test Method L-14-93.This second
30、edition cancels and replaces the first edition (ISO 20844:2004), which has been technically revised with the following changes: correction of deficiencies of the former standard and alignment with CEC L-14-93 have been introduced; the requirements concerning reagents (Clause 5) has been updated as t
31、he former reference fluid is no longer available; a requirement on minimum test volume availability (7.2) has been introduced based on field experience; the preparation of the test rig (Clause 8 and Annex A) and subsequently the referencing (Clause 9) have been improved and technically revised.iv IS
32、O 2015 All rights reservedBS EN ISO 20844:2015ISO 20844:2015(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical comm
33、ittees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
34、International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
35、 different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives). Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. IS
36、O shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents). Any trade name used in this docu
37、ment is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade
38、 (TBT) see the following URL: Foreword - Supplementary informationThe committee responsible for this document is ISO/TC 28, Petroleum products and related products of synthetic or biological origin.ISO Technical Committee ISO/TC 28 acknowledges permission granted by Co-ordinating European Council to
39、 reproduce selected parts of CEC Test Method L-14-93.This second edition cancels and replaces the first edition (ISO 20844:2004), which has been technically revised with the following changes: correction of deficiencies of the former standard and alignment with CEC L-14-93 have been introduced; the
40、requirements concerning reagents (Clause 5) has been updated as the former reference fluid is no longer available; a requirement on minimum test volume availability (7.2) has been introduced based on field experience; the preparation of the test rig (Clause 8 and Annex A) and subsequently the refere
41、ncing (Clause 9) have been improved and technically revised.iv ISO 2015 All rights reserved INTERNATIONAL STANDARD ISO 20844:2015(E)Petroleum and related products Determination of the shear stability of polymer-containing oils using a diesel injector nozzleWARNING The use of this International Stand
42、ard may involve hazardous materials, operations and equipment. This International Standard does not purport to address all of 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 dete
43、rmine the applicability of regulatory limitations prior to use.1 ScopeThis International Standard specifies a method to assess the resistance to shear stresses applied to mineral oils, synthetic oils, and other fluids containing polymers, when passed through a specified diesel injector nozzle. The s
44、hear stability is measured by the change in viscosity of the fluid under test, brought about by the polymer degradation during stress. Under normal circumstances, this International Standard is applied to hydraulic fluids of categories HR and HV as defined in ISO 6743-41and specified in ISO 111582,
45、but it may also be applied to fire-resistant hydraulic fluids within categories HFA, HFB, HFC, and HFD, with modified conditions as specified in ISO 129223.No formal correlation has been established between the viscosity loss, or the absence of viscosity loss, obtained using the procedures described
46、 in this International Standard and that of oils and fluids in actual service. However, it provides standardized conditions for the evaluation of polymer stability under minimized thermal and oxidative stresses. It is normally used by manufacturers of fluids and additives, and users, as a means of r
47、anking existing and potential formulations.NOTE Changes to properties other than viscosity are specified in some specifications, but these are not covered by the procedures specified in this International Standard.2 Normative referencesThe following documents, in whole or in part, are normatively re
48、ferenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 3104, Petroleum products Transparent and opaque liquids Determinatio
49、n of kinematic viscosity and calculation of dynamic viscosityISO 3170, Petroleum liquids Manual samplingISO 4113, Road vehicles Calibration fluids for diesel injection equipment3 Terms and definitionsFor the purposes of this document, the following terms and definitions apply.3.1shear stabilitymechanically-induced viscosity shear loss at 40 C of a fluid, expressed as percentageNote 1 to entry: Viscosity measurements at other temperatures may be specified by some users. ISO 2015 All rights reserved 1BS EN IS
