SIST EN ISO 20844:2015
(Main)Petroleum and related products - Determination of the shear stability of polymer-containing oils using a diesel injector nozzle (ISO 20844:2015)
Petroleum and related products - Determination of the shear stability of polymer-containing oils using a diesel injector nozzle (ISO 20844:2015)
This 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 shear 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 6743-4[1]
and specified in ISO 11158 [2], 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 12922[3].
No formal correlation has been established between the viscosity loss, or the absence of viscosity loss,
obtained using the procedures described 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 ranking 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.
Mineralölerzeugnisse und verwandte Produkte - Bestimmung der Scherstabilität von polymerhaltigen Ölen mit Hilfe einer Diesel-Einspritzdüse (ISO 20844:2015)
Diese Internationale Norm legt ein Verfahren zur Beurteilung des Widerstands von Mineralölen, synthetischen Ölen und anderen polymerhaltigen Flüssigkeiten gegen Scherbeanspruchung bei Durchgang durch eine festgelegte Diesel-Einspritzdüse fest. Die Scherstabilität wird als Änderung der Viskosität der zu prüfenden Flüssigkeit gemessen, die sich durch Polymerzersetzung unter Scherbeanspruchung ergibt. In der Regel wird diese Internationale Norm auf Hydraulikflüssigkeiten der in ISO 6743-4 [1] definierten und in ISO 11158 [2] festgelegten Klassen HR und HV angewendet; unter angepassten Bedingungen nach ISO 12922 [3] darf sie jedoch auch auf schwer entflammbare Hydraulikflüssigkeiten der Klassen HFA, HFB, HFC und HFD angewendet werden.
Es wurde keine formelle Korrelation zwischen dem Viskositätsverlust oder dessen Ausbleiben bei Anwendung der Verfahren nach dieser Internationalen Norm und dem Viskositätsverlust oder dessen Ausbleiben bei Ölen und Flüssigkeiten in der praktischen Anwendung bestimmt. Die Verfahren bieten jedoch genormte Bedingungen für die Bewertung der Polymerstabilität bei Verringerung der thermischen und oxidativen Beanspruchungen auf ein Mindestmaß. Sie werden üblicherweise durch Hersteller von Flüssigkeiten und Additiven sowie durch Anwender als Hilfsmittel bei der Bewertung bestehender oder potentieller Formulierungen eingesetzt.
ANMERKUNG In einigen Spezifikationen sind Änderungen in anderen Eigenschaften als der Viskosität festgelegt; diese sind jedoch durch die Verfahren nach dieser Internationalen Norm nicht abgedeckt.
Pétrole et produits connexes - Détermination de la stabilité au cisaillement de fluides contenant des polymères au moyen d'un injecteur pour moteur diesel (ISO 20844:2015)
L'ISO 20844:2015 spécifie une méthode d'évaluation de la capacité des huiles minérales et synthétiques et autres fluides contenant des polymères à résister aux contraintes de cisaillement mécanique appliquées quand ils circulent à travers un injecteur pour moteur Diesel spécifié. La stabilité au cisaillement est mesurée par la variation de viscosité du fluide occasionnée par l'altération du polymère durant l'application de la contrainte. Normalement, la présente Norme internationale s'applique aux fluides hydrauliques des catégories HR et HV définies dans l'ISO 6743‑4 [1] et spécifiées dans l'ISO 11158[2], mais elle peut également être appliquée aux fluides difficilement inflammables des catégories HFA, HFB, HFC et HFD dans des conditions modifiées, comme cela est spécifié dans l'ISO 12922[3].
Aucune corrélation formelle n'a été établie entre la chute de viscosité, ou l'absence de chute de viscosité, obtenue à l'aide des méthodes décrites dans la présente Norme internationale et l'évolution de la viscosité d'huiles ou de fluides en service réel. Elle procure cependant des conditions normalisées pour évaluer la stabilité des polymères avec des contraintes d'oxydation et thermiques minimales. Elle est généralement utilisée par les fabricants de fluides et d'additifs, ainsi que par les utilisateurs des fluides, comme moyen pour classer des formulations existantes ou en développement.
NOTE Certaines spécifications spécifient des variations de caractéristiques autres que la viscosité. Celles-ci ne relèvent pas des méthodes spécifiées dans la présente Norme internationale.
Naftni in sorodni proizvodi - Ugotavljanje strižne stabilnosti olj, ki vsebujejo polimere, z uporabo dizelskih vbrizgalnih šob (ISO 20844:2015)
Ta mednarodni standard določa metodo za ugotavljanje strižne stabilnosti
mineralnih olj, sintetičnih olj in drugih tekočin, ki vsebujejo polimere, ko potujejo skozi
dizelske vbrizgalne šobe. Strižno stabilnost merimo s spremembo viskoznosti preskušane tekočine,
ki nastane zaradi razgradnje polimerov pod stresom. V običajnih okoliščinah se ta
mednarodni standard uporablja za hidravlične tekočine kategorij HR in HV, kakor je opredeljeno v standardu ISO 6743-4 [1] in standardu ISO 11158 [2], vendar se lahko uporablja tudi za negorljive hidravlične tekočine znotraj kategorij HFA, HFB, HFC in HFD pod spremenjenimi pogoji, kot je določeno v standardu ISO 12922 [3].
Formalna korelacija med izgubo viskoznosti ali odsotnostjo izgube viskoznosti, pridobljene s postopki, opisanimi v tem mednarodnem standardu, ter olji in tekočinami v dejanski uporabi ni bila ugotovljena. Vendar pa standard zagotavlja standardizirane pogoje za ocenjevanje stabilnosti polimerov pod minimalnimi termičnimi in oksidativnimi stresi. Običajno ga uporabljajo proizvajalci tekočin in dodatkov ter uporabniki kot sredstvo za razvrstitev obstoječih in potencialnih formulacij.
OPOMBA Druge spremembe lastnosti razen viskoznosti so določene v nekaterih specifikacijah, vendar te niso zajete v postopkih, navedenih v tem mednarodnem standardu.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 20844:2015
01-december-2015
1DGRPHãþD
SIST EN ISO 20844:2004
Naftni in sorodni proizvodi - Ugotavljanje strižne stabilnosti olj, ki vsebujejo
polimere, z uporabo dizelskih vbrizgalnih šob (ISO 20844:2015)
Petroleum and related products - Determination of the shear stability of polymer-
containing oils using a diesel injector nozzle (ISO 20844:2015)
Mineralölerzeugnisse und verwandte Produkte - Bestimmung der Scherstabilität von
polymerhaltigen Ölen mit Hilfe einer Diesel-Einspritzdüse (ISO 20844:2015)
Pétrole et produits connexes - Détermination de la stabilité au cisaillement de fluides
contenant des polymères au moyen d'un injecteur pour moteur diesel (ISO 20844:2015)
Ta slovenski standard je istoveten z: EN ISO 20844:2015
ICS:
75.080 Naftni proizvodi na splošno Petroleum products in
general
SIST EN ISO 20844:2015 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
---------------------- Page: 1 ----------------------
SIST EN ISO 20844:2015
---------------------- Page: 2 ----------------------
SIST EN ISO 20844:2015
EN ISO 20844
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2015
EUROPÄISCHE NORM
ICS 75.080 Supersedes EN ISO 20844:2004
English Version
Petroleum and related products - Determination of the
shear stability of polymer-containing oils using a diesel
injector nozzle (ISO 20844:2015)
Pétrole et produits connexes - Détermination de la Mineralölerzeugnisse und verwandte Produkte -
stabilité au cisaillement de fluides contenant des Bestimmung der Scherstabilität von polymerhaltigen
polymères au moyen d'un injecteur pour moteur diesel Ölen mit Hilfe einer Diesel-Einspritzdüse (ISO
(ISO 20844:2015) 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
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 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 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, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR 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 Ref. No. EN ISO 20844:2015 E
worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN ISO 20844:2015
EN ISO 20844:2015 (E)
Contents Page
European foreword . 3
2
---------------------- Page: 4 ----------------------
SIST EN ISO 20844:2015
EN ISO 20844:2015 (E)
European foreword
This document (EN ISO 20844:2015) has been prepared by Technical Committee ISO/TC 28 "Petroleum
products and related products of synthetic or biological origin" 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 European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by March 2016, and conflicting national standards shall
be withdrawn at the latest by March 2016.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent
rights.
This document supersedes EN ISO 20844:2004.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, 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, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 20844:2015 has been approved by CEN as EN ISO 20844:2015 without any modification.
3
---------------------- Page: 5 ----------------------
SIST EN ISO 20844:2015
---------------------- Page: 6 ----------------------
SIST EN ISO 20844:2015
INTERNATIONAL ISO
STANDARD 20844
Second edition
2015-09-01
Petroleum and related products —
Determination of the shear stability of
polymer-containing oils using a diesel
injector nozzle
Pétrole et produits connexes — Détermination de la stabilité au
cisaillement de fluides contenant des polymères au moyen d’un
injecteur pour moteur diesel
Reference number
ISO 20844:2015(E)
©
ISO 2015
---------------------- Page: 7 ----------------------
SIST EN ISO 20844:2015
ISO 20844:2015(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2015, Published in Switzerland
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior
written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of
the requester.
ISO copyright office
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2015 – All rights reserved
---------------------- Page: 8 ----------------------
SIST EN ISO 20844:2015
ISO 20844:2015(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 2
5 Reagents and materials . 2
6 Apparatus . 2
6.1 Test rig . 2
6.2 Viscosity measuring apparatus . 2
7 Samples and sampling . 2
8 Preparation of test rig . 3
9 Referencing . 4
10 Procedure. 4
11 Calculation . 5
12 Expression of results . 5
13 Precision . 5
13.1 General . 5
13.2 Repeatability . 5
13.3 Reproducibility . 6
14 Test report . 6
Annex A (normative) Test rig . 7
Bibliography .10
© ISO 2015 – All rights reserved iii
---------------------- Page: 9 ----------------------
SIST EN ISO 20844:2015
ISO 20844:2015(E)
Foreword
ISO (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 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 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
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. ISO 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 document 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 ISO’s adherence to the WTO principles in the Technical
Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information
The 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 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 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 referencing (Clause 9)
have been improved and technically revised.
iv © ISO 2015 – All rights reserved
---------------------- Page: 10 ----------------------
SIST EN ISO 20844:2015
INTERNATIONAL STANDARD ISO 20844:2015(E)
Petroleum and related products — Determination of the
shear stability of polymer-containing oils using a diesel
injector nozzle
WARNING — The use of this International Standard 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 determine the applicability of
regulatory limitations prior to use.
1 Scope
This 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 shear 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
[1]
International Standard is applied to hydraulic fluids of categories HR and HV as defined in ISO 6743-4
[2]
and specified in ISO 11158 , but it may also be applied to fire-resistant hydraulic fluids within
[3]
categories HFA, HFB, HFC, and HFD, with modified conditions as specified in ISO 12922 .
No formal correlation has been established between the viscosity loss, or the absence of viscosity loss,
obtained using the procedures described 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 ranking 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 references
The following documents, in whole or in part, are normatively referenced 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 — Determination of kinematic viscosity
and calculation of dynamic viscosity
ISO 3170, Petroleum liquids — Manual sampling
ISO 4113, Road vehicles — Calibration fluids for diesel injection equipment
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
shear stability
mechanically-induced viscosity shear loss at 40 °C of a fluid, expressed as percentage
Note 1 to entry: Viscosity measurements at other temperatures may be specified by some users.
© ISO 2015 – All rights reserved 1
---------------------- Page: 11 ----------------------
SIST EN ISO 20844:2015
ISO 20844:2015(E)
3.2
referencing pressure
recorded gauge pressu
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.