1、BS ISO 12614-19:2017Road vehicles Liquefied natural gas (LNG) fuel system componentsPart 19: Automatic valveBSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS ISO 12614-19:2017 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 126
2、14-19:2017. 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 committee can be obtained on request to its secretary.This publication does not purport to include all the necess
3、ary 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 90581 0 ICS 43.060.40 Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard w
4、as published under the authority of the Standards Policy and Strategy Committee on 31 March 2017.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dBS ISO 12614-19:2017 ISO 2017Road vehicles Liquefied natural gas (LNG) fuel system components Part 19: Automatic valveVhicules ro
5、utiers Composants des systmes dalimentation en gaz naturel liqufi (GNL) Partie 19: Valve automatiqueINTERNATIONAL STANDARDISO12614-19First edition2017-02Reference numberISO 12614-19:2017(E)BS ISO 12614-19:2017ISO 12614-19:2017(E)ii ISO 2017 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2017, P
6、ublished 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. Perm
7、ission 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.orgBS ISO 12614-19:2017ISO 12614-19:2017
8、(E)Foreword iv1 Scope . 12 Normative references 13 Terms and definitions . 14 Marking 25 Construction and assembly . 26 Test 26.1 Applicability 26.2 Hydrostatic strength 36.3 Leakage 36.4 Continued operation 36.5 Insulation resistance 46.6 Minimum opening voltage 4Bibliography 5 ISO 2017 All rights
9、reserved iiiContents PageBS ISO 12614-19:2017ISO 12614-19:2017(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 co
10、mmittees. 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 th
11、e 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 t
12、he 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
13、. 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 thi
14、s 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 ISOs adherence to the World Trade Organization (WTO) principles i
15、n the Technical Barriers to Trade (TBT) see the following URL: www .iso .org/ iso/ foreword .html.The committee responsible for this document is ISO/TC 22, Road vehicles, Subcommittee SC 41, Specific aspects for gaseous fuels.A list of all the parts in the ISO 12614 series can be found on the ISO we
16、bsite.iv ISO 2017 All rights reservedBS ISO 12614-19:2017INTERNATIONAL STANDARD ISO 12614-19:2017(E)Road vehicles Liquefied natural gas (LNG) fuel system components Part 19: Automatic valve1 ScopeThis document specifies tests and requirements for the automatic valve, a liquefied natural gas fuel sys
17、tem component intended for use on the types of motor vehicles defined in ISO 3833. This document is applicable to vehicles using natural gas in accordance with ISO 15403 (all parts) (mono-fuel, bi-fuel or dual-fuel applications). It is not applicable to the following:a) fuel containers;b) stationary
18、 gas engines;c) container mounting hardware;d) electronic fuel management;e) refuelling receptacles.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.NOT
19、E 2 All references to pressure in this document are considered gauge pressures unless otherwise specified.NOTE 3 This document is based upon a working pressure for natural gas as a fuel of 1,6 MPa (16 bar). Other working pressures can be accommodated by adjusting the pressure by the appropriate fact
20、or (ratio). For example, 2 Mpa (20 bar) working pressure system will require pressures to be multiplied by 1,25.2 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, o
21、nly the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 12614-1, Road vehicles Liquefied natural gas (LNG) fuel system components Part 1: General requirements and definitionsISO 12614-2, Road vehicles Liquefied natur
22、al gas (LNG) fuel system components Part 2: Performance and general test methods3 Terms and definitionsFor the purpose of this document, the terms and definitions given in ISO 12614-1 apply.ISO and IEC maintain terminological databases for use in standardization at the following addresses: IEC Elect
23、ropedia: available at h t t p :/ www .electropedia .org/ ISO Online browsing platform: available at h t t p :/ www .iso .org/ obp ISO 2017 All rights reserved 1BS ISO 12614-19:2017ISO 12614-19:2017(E)4 MarkingMarking of the component shall provide sufficient information to allow the following to be
24、traced:a) the manufacturers or agents name, trademark or symbol;b) the model designation (part number);c) the working pressure or pressure and temperature range.The following additional markings are recommended:d) the direction of flow (when necessary for correct installation);e) the type of fuel;f)
25、 electrical ratings (if applicable);g) the symbol of the certification agency;h) the type approval number;i) the serial number or date code;j) a reference to this document, i.e. ISO 12614-19.In addition to the markings specified above, if the valve is compatible with start/stop systems, one of the f
26、ollowing additional marks shall be used:(a) “H1”if the valve is to be used with an engine that shuts off automatically when the vehicle comes to a halt;(b) “H2”if the valve is to be used with an engine that, in addition to (a), it also shuts off automatically when the vehicle drives with an electric
27、 motor only;(c) “H3”if the valve is to be used with an engine that, in addition to (a) or (b), it also shuts off automatically when the accelerator pedal is releasedNOTE This information can be provided by a suitable identification code on at least one part of the component when it consists of more
28、than one part.5 Construction and assemblyThe automatic valve shall comply with the applicable provisions of ISO 12614-1 and ISO 12614-2, and with the tests specified in Clause 6.The automatic valve shall be closed when de-energized.The automatic valve with manual by-pass shall meet the minimum requi
29、rements of this document.6 Test6.1 ApplicabilityThe tests required to be carried out are indicated in Table 1.2 ISO 2017 All rights reservedBS ISO 12614-19:2017ISO 12614-19:2017(E)Table 1 Tests applicableTest ApplicableTest procedure as required by ISO 12614-2Specific test requirements of this docum
30、entHydrostatic strength X X X (see 6.2)Leakage X X X (see 6.3)Excess torque resistance X XBending moment XaXContinued operation X X X (see 6.4)Corrosion resistance X XOxygen ageing X XElectrical overvoltages X XNon-metallic synthetic immersion X XVibration resistance X XBrass material compatibility
31、X XInsulation resistance X X (see 6.5)Minimum opening voltage X X (see 6.6)aApplicability depends on the specific installation instructions from the manufacturer.6.2 Hydrostatic strengthTest the automatic valve according to the procedure for testing hydrostatic strength specified in ISO 12614-2. The
32、 test pressure shall be 2,5 times the working pressure.6.3 LeakageTest the automatic valve at the temperatures and pressures given in Table 2.Table 2 Test temperatures and pressuresTemperature CPressureFactor Working PressureFirst SecondLess -60 1,0 WP 0,25 WP20 0,25 WP 1,5 WP85 or 120 0,25 WP 1,5 W
33、P6.4 Continued operationTest the automatic valve in accordance with the procedure for testing continued operation given in ISO 12614-2 for 7 000 cycles, and perform the leakage test in accordance with 6.3.6.4.1 If the automatic valve is to be used in vehicles with start-stop systems, and closed duri
34、ng commanded stop phases, the valve shall be submitted to the following numbers of operations during test:a) 200,000 cycles (mark “H1”) if the engine shuts off automatically when the vehicle comes to a halt;b) 500,000 cycles (mark “H2”) if, in addition to (a), the engine also shuts off automatically
35、 when the vehicle drives with the electric motor only;c) 1,000,000 cycles (mark “H3”) if, in addition to (a) or (b), the engine also shuts off automatically when the accelerator pedal is released. ISO 2017 All rights reserved 3BS ISO 12614-19:2017ISO 12614-19:2017(E)6.4.2 Following cycling and leaka
36、ge testing, perform the hydrostatic strength test in accordance with 6.2.6.5 Insulation resistanceThis test is designed to check for a potential failure of the insulation between the two-pin coil assembly and the metallic part of the automatic valve casing.Apply 1 000 V d.c. between one of the conne
37、ctor pins and the housing of the automatic valve for at least 2s. The minimum allowable resistance shall be 240 k.6.6 Minimum opening voltageThe minimum opening voltage at room temperature shall be 8 V for a 12 V system and 16 V for a 24 V system. The component shall be pressurized at 0,75 times wor
38、king pressure during the test.4 ISO 2017 All rights reservedBS ISO 12614-19:2017ISO 12614-19:2017(E)Bibliography1 ISO 3833, Road vehicles Types Terms and definitions2 ISO 15403, Natural gas Natural gas for use as a compressed fuel for vehicles ISO 2017 All rights reserved 5BS ISO 12614-19:2017ISO 12
39、614-19:2017(E) ISO 2017 All rights reservedICS 43.060.40Price based on 5 pagesThis page deliberately left blankBSI is the national body responsible for preparing British Standards and other standards-related publications, information and services.BSI is incorporated by Royal Charter. British Standar
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