1、Road vehicles Compressed gaseous hydrogen (CGH2) and hydrogen/natural gas blends fuel system componentsPart 14: Flexible fuel lineBS ISO 1261914:2017BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06 ISO 2017Road vehicles Compressed gaseous hydrogen (CGH2) and hydrogen
2、/natural gas blends fuel system components Part 14: Flexible fuel lineVhicules routiers Composants des circuits dalimentation pour hydrogne gazeux comprim (CGH2) et mlanges de gaz naturel et hydrogne Partie 14: Tuyauterie flexible pour combustibleINTERNATIONAL STANDARDISO12619-14First edition2017-08
3、Reference numberISO 12619-14:2017(E)National forewordThis British Standard is the UK implementation of ISO 1261914:2017.The UK participation in its preparation was entrusted to Technical Committee GSE/40, Gas supply equipment for natural gas vehicles.A list of organizations represented on this commi
4、ttee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2017 Published by BSI Standards Limited 2017ISBN 978 0 580 94696 7ICS 43.060.
5、40Compliance 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 30 September 2017.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS ISO 12619
6、14:2017 ISO 2017Road vehicles Compressed gaseous hydrogen (CGH2) and hydrogen/natural gas blends fuel system components Part 14: Flexible fuel lineVhicules routiers Composants des circuits dalimentation pour hydrogne gazeux comprim (CGH2) et mlanges de gaz naturel et hydrogne Partie 14: Tuyauterie f
7、lexible pour combustibleINTERNATIONAL STANDARDISO12619-14First edition2017-08Reference numberISO 12619-14:2017(E)BS ISO 1261914:2017ISO 12619-14:2017(E)ii ISO 2017 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2017, Published in SwitzerlandAll rights reserved. Unless otherwise specified, no pa
8、rt 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 ISOs member b
9、ody in the country of the requester.ISO copyright officeCh. de Blandonnet 8 CP 401CH-1214 Vernier, Geneva, SwitzerlandTel. +41 22 749 01 11Fax +41 22 749 09 47copyrightiso.orgwww.iso.orgBS ISO 1261914:2017ISO 12619-14:2017(E)ii ISO 2017 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2017, Publi
10、shed in SwitzerlandAll 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. Permissi
11、on can be requested from either ISO at the address below or ISOs member body in the country of the requester.ISO copyright officeCh. de Blandonnet 8 CP 401CH-1214 Vernier, Geneva, SwitzerlandTel. +41 22 749 01 11Fax +41 22 749 09 47copyrightiso.orgwww.iso.orgISO 12619-14:2017(E)Foreword iv1 Scope .
12、12 Normative references 13 Terms and definitions . 14 Marking 25 Construction and assembly . 26 Tests . 26.1 Applicability 26.2 Hydrostatic strength 36.3 Continued operation 36.4 Bending 36.5 Pull-off 46.6 Electrical conductivity 46.7 Permeability 5Bibliography 6 ISO 2017 All rights reserved iiiCont
13、ents PageBS ISO 1261914:2017ISO 12619-14:2017(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 committees. Each me
14、mber 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 E
15、lectrotechnical 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 type
16、s 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 b
17、e 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 inf
18、ormation given for the convenience of users and does not constitute an endorsement.For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the World Trade Organization
19、(WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: www .iso .org/ iso/ foreword .html.This document was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 41, Specific aspects for gaseous fuels.A list of all parts in the ISO 12619 series can be fo
20、und on the ISO website.iv ISO 2017 All rights reservedBS ISO 1261914:2017ISO 12619-14:2017(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
21、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
22、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 ap
23、proval 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
24、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
25、).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 voluntary nature of standards, the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about IS
26、Os adherence to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: www .iso .org/ iso/ foreword .html.This document was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 41, Specific aspects for gaseous fuels.A list o
27、f all parts in the ISO 12619 series can be found on the ISO website.iv ISO 2017 All rights reserved INTERNATIONAL STANDARD ISO 12619-14:2017(E)Road vehicles Compressed gaseous hydrogen (CGH2) and hydrogen/natural gas blends fuel system components Part 14: Flexible fuel line1 ScopeThis document speci
28、fies tests and requirements for the flexible fuel line, a compressed gaseous hydrogen (CGH2) and hydrogen/natural gas blend fuel system component intended for use on the types of motor vehicles defined in ISO 3833.It is applicable to vehicles using CGH2in accordance with ISO 14687-1 or ISO 14687-2 a
29、nd hydrogen/natural gas blend using natural gas in accordance with ISO 15403-1 and ISO/TR 15403-2. It is not applicable to the following:a) liquefied hydrogen (LH2) fuel system components;b) fuel containers;c) stationary gas engines;d) container mounting hardware;e) electronic fuel management;f) ref
30、uelling receptacles;g) fuel cell vehicles.NOTE 1 It is recognized that miscellaneous components not specifically covered herein can be examined to meet the criteria of this document and tested according to the appropriate functional tests.NOTE 2 All references to pressure in this document are consid
31、ered gauge pressures unless otherwise specified.2 Normative referencesThe following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the lates
32、t edition of the referenced document (including any amendments) applies.ISO 12619-1, Road vehicles Compressed gaseous hydrogen (CGH2) and hydrogen/natural gas blend fuel system components Part 1: General requirements and definitionsISO 12619-2, Road vehicles Compressed gaseous hydrogen (CGH2) and hy
33、drogen/natural gas blend fuel system components Part 2: Performance and general test methods3 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO 12619-1 apply. ISO 2017 All rights reserved 1BS ISO 1261914:2017ISO 12619-14:2017(E)ISO and IEC maintain termin
34、ological databases for use in standardization at the following addresses: IEC Electropedia: available at h t t p :/ www .electropedia .org/ ISO Online browsing platform: available at h t t p :/ www .iso .org/ obp4 MarkingMarking of the component shall provide sufficient information to allow the foll
35、owing to be traced:a) the manufacturers or agents name, trademark or symbol;b) the model designation (part number);c) the temperature range.The following additional markings are recommended: the direction of flow (when necessary for correct installation); the type of fuel; the electrical ratings (if
36、 applicable); the symbol of the certification agency; the type approval number; the serial number or date code; a reference to this document, i.e. ISO 12619-14:2017.NOTE This information can be provided by a suitable identification code on at least one part of the component when it consists of more
37、than one part.5 Construction and assemblyThe flexible fuel line shall comply with the applicable provisions of ISO 12619-1 and ISO 12619-2 and with the tests specified in Clause 6. Tolerances should follow the specifications of ISO 12619-2.6 Tests6.1 ApplicabilityThe tests required to be carried out
38、 are indicated in Table 1.2 ISO 2017 All rights reservedBS ISO 1261914:2017ISO 12619-14:2017(E)ISO and IEC maintain terminological databases for use in standardization at the following addresses: IEC Electropedia: available at h t t p :/ www .electropedia .org/ ISO Online browsing platform: availabl
39、e at h t t p :/ www .iso .org/ obp4 MarkingMarking of the component shall provide sufficient information to allow the following to be traced:a) the manufacturers or agents name, trademark or symbol;b) the model designation (part number);c) the temperature range.The following additional markings are
40、recommended: the direction of flow (when necessary for correct installation); the type of fuel; the electrical ratings (if applicable); the symbol of the certification agency; the type approval number; the serial number or date code; a reference to this document, i.e. ISO 12619-14:2017.NOTE This inf
41、ormation can be provided by a suitable identification code on at least one part of the component when it consists of more than one part.5 Construction and assemblyThe flexible fuel line shall comply with the applicable provisions of ISO 12619-1 and ISO 12619-2 and with the tests specified in Clause
42、6. Tolerances should follow the specifications of ISO 12619-2.6 Tests6.1 ApplicabilityThe tests required to be carried out are indicated in Table 1.2 ISO 2017 All rights reserved ISO 12619-14:2017(E)Table 1 Applicable testsTest ApplicableTest procedure as required by ISO 12619-2Specific test require
43、ments of this documentHydrostatic strength X X X (see 6.2)Leakage X X Excess torque resistanceXaX Bending moment Continued operation X X X (see 6.3)Corrosion resistance X X Oxygen ageing X X Ozone ageing X X Heat ageing X X Automotive fluids X X Electrical over-voltages Non-metallic material immersi
44、on X X Vibration resistance Brass material compatibility X X Bending X X (see 6.4)Pull-off X X (see 6.5)Electrical conductivity X X (see 6.6)Permeability X X (see 6.7)aApplicable to the fittings.6.2 Hydrostatic strengthTest the flexible fuel line according to the procedure for testing hydrostatic st
45、rength specified in ISO 12619-2. The test pressure shall be four times the specified working pressure.NOTE The higher hydrostatic test pressure for the flexible fuel line compared with the other components in the other parts of ISO 12619 is due to the necessary provisions to cope for eventual damage
46、 or abrasions under normal operation.6.3 Continued operationTest high pressure flexible fuel lines in accordance with the procedure for testing continued operation given in ISO 12619-2 for a total of 20 000 cycles and low pressure flexible lines for a total of 100 000 cycles.Following cycling testin
47、g, perform the leak test as specified in ISO 12619-2, then the hydrostatic test in accordance with 6.2.6.4 BendingTest the flexible fuel line using a suitable length of flexible fuel line with no end fittings according to the following procedure and acceptance criteria.a) Carefully bend the flexible
48、 fuel line and place it in a fixture as shown in Figure 1.b) After the flexible fuel line has been left in this position for 5 min, insert into one end of the flexible fuel line a steel ball having a diameter equal to half of the nominal inside diameter of the flexible fuel line.The fuel line shall
49、not kink and the ball shall pass freely from one end of the flexible fuel line to the other. ISO 2017 All rights reserved 3BS ISO 1261914:2017ISO 12619-14:2017(E)Dimension in millimetresKey1 boardaHole size as necessary to fit flexible fuel line outside diameter.br = 10 times the nominal flexible fuel line inside diameter, or the flexible fuel line manufacturers specified minimum bend radius, whichever is less.Figure 1 Bending test6.5
