1、BSI Standards PublicationBS ISO 12614-9:2014Road vehicles Liquefiednatural gas (LNG) fuel systemcomponentsPart 9: Gas-tight housing and ventilationhoseBS ISO 12614-9:2014 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 12614-9:2014.The UK participation in its p
2、reparation was entrusted to TechnicalCommittee GSE/40, Gas supply equipment for natural gas vehicles.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are resp
3、onsible for its correctapplication. The British Standards Institution 2014. Published by BSI StandardsLimited 2014ISBN 978 0 580 77156 9ICS 43.060.40Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards
4、 Policy and Strategy Committee on 31 July 2014.Amendments issued since publicationDate Text affectedBS ISO 12614-9:2014 ISO 2014Road vehicles Liquefied natural gas (LNG) fuel system components Part 9: Gas-tight housing and ventilation hoseVhicules routiers quipements pour vhicules utilisant le gaz n
5、aturel liqufi (GNL) comme combustible Partie 9: Compartiment tanche pour gaz et tuyaux de ventilationINTERNATIONAL STANDARDISO12614-9First edition2014-07-01Reference numberISO 12614-9:2014(E)BS ISO 12614-9:2014ISO 12614-9:2014(E)ii ISO 2014 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2014All
6、 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 fr
7、om either ISO at the address below or ISOs member body in the country of the requester.ISO copyright officeCase postale 56 CH-1211 Geneva 20Tel. + 41 22 749 01 11Fax + 41 22 749 09 47E-mail copyrightiso.orgWeb www.iso.orgPublished in SwitzerlandBS ISO 12614-9:2014ISO 12614-9:2014(E) ISO 2014 All rig
8、hts reserved iiiContents PageForeword iv1 Scope . 12 Normative references 13 Terms and definitions . 14 Marking 25 Construction and assembly . 26 Test 26.1 Applicability 26.2 Leakage 36.3 Pull-off 3BS ISO 12614-9:2014ISO 12614-9:2014(E)ForewordISO (the International Organization for Standardization)
9、 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 repre
10、sented 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 devel
11、op 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/
12、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 t
13、he 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
14、 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 informationThe committee responsible for this document is ISO/TC 22, Roa
15、d vehicles, Subcommittee SC 25, Vehicles using gaseous fuels.ISO 12614 consists of the following parts, under the general title Road vehicles Liquefied natural gas (LNG) fuel system components: Part 1: General requirements and definitions Part 2: Performance and general test methods Part 3: Check va
16、lve Part 4: Manual valve Part 5: Tank pressure gauge Part 6: Overpressure regulator Part 7: Pressure relief valve Part 8: Excess flow valve Part 9: Gas-tight housing and ventilation hose Part 10: Rigid fuel line in stainless steel Part 11: Fittings Part 12: Rigid fuel line in material other than sta
17、inless steel Part 13: Pressure control regulator Part 14: Differential pressure fuel content gauge Part 15: Capacitance fuel content gaugeiv ISO 2014 All rights reservedBS ISO 12614-9:2014ISO 12614-9:2014(E) Part 16: Heat exchanger - vaporizer Part 17: Natural gas detector Part 18: Gas temperature s
18、ensor ISO 2014 All rights reserved vBS ISO 12614-9:2014BS ISO 12614-9:2014Road vehicles Liquefied natural gas (LNG) fuel system components Part 9: Gas-tight housing and ventilation hose1 ScopeThis part of ISO 12614 specifies tests and requirements for the gas-tight housing and ventilation hose, a li
19、quefied natural gas fuel system component intended for use on the types of motor vehicles defined in ISO 3833.This part of ISO 12614 is applicable to vehicles using natural gas in accordance with ISO 15403 (mono-fuel, bi-fuel, or dual-fuel applications). It is not applicable to the following:a) fuel
20、 containers;b) stationary gas engines;c) container mounting hardware;d) electronic fuel management;e) refueling receptacles.NOTE 1 It is recognized that miscellaneous components not specifically covered herein can be examined to meet the criteria of this part of ISO 12614 and tested according to the
21、 appropriate functional tests.NOTE 2 All references to pressure in this part of ISO 12614 are to be considered gauge pressures unless otherwise specified.NOTE 3 This part of ISO 12614 is based upon a working pressure for natural gas as a fuel of 1,6 MPa 16 bar1). Other working pressures can be accom
22、modated by adjusting the pressure by the appropriate factor (ratio). For example, 2 MPa (20 bar) working pressure system will require pressures to be multiplied by 1,25.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensab
23、le 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 3833, Road vehicles Types Terms and definitionsISO 12614-1, Road vehicles Liquefied natural gas (LNG) fuel system
24、 components Part 1: General requirements and definitionsISO 12614-2, Road vehicles Liquefied natural gas (LNG) 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 12614-1 apply.1) 1 bar =
25、0,1 MPa = 105 Pa; 1 MPa = 1 N/mm2.INTERNATIONAL STANDARD ISO 12614-9:2014(E) ISO 2014 All rights reserved 1BS ISO 12614-9:2014ISO 12614-9:2014(E)4 MarkingMarking of the component shall provide sufficient information to allow the following to be traced:a) the manufacturers or agents name, trademark,
26、or symbol;b) the model designation (part number);c) temperature range.The following additional markings are recommended:d) the direction of flow (when necessary for correct installation);e) the type of fuel;f) electrical ratings (if applicable);g) the symbol of the certification agency;h) the type a
27、pproval number;i) the serial number or date code;j) reference to this part of ISO 12614 (i.e. ISO 12614-9).NOTE This information 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 gas-tight hou
28、sing and ventilation hose shall comply with the applicable provisions of ISO 12614-1 and ISO 12614-2 and with the tests specified in Clause 6 of this part of ISO 12614.The gas-tight housing shall be assembled in such a way that the function of the pressure relief device or devices (PRD) will not be
29、affected.6 Test6.1 ApplicabilityThe tests required to be carried out are indicated in Table 1.2 ISO 2014 All rights reservedBS ISO 12614-9:2014ISO 12614-9:2014(E)Table 1 Tests applicableTest ApplicableTest procedure as required by ISO 12614-2Specific test require-ments of this part of ISO 12614Leaka
30、ge X X X (see 6.2)Excess torque resistance X XBending momentContinued operationCorrosion resistance X XOxygen ageing X XElectrical over voltagesNon-metallic synthetic immersion X XVibration resistance XaXBrass material compatibilityPull-off X X (see 6.3)aApplicable only if made of metal.6.2 LeakageT
31、est the gas-tight housing according to the procedure for leakage specified in ISO 12614-2, at the temperatures and pressures given in Table 2.Table 2 Test temperatures and pressuresTemperature CPressure MPa (bar)160 0,05 (0,5)20 0,05 (0,5)85 0,05 (0,5)6.3 Pull-offTest the ventilation hose attached b
32、y a suitable connection device to the gas-tight housing and to any other connecting point used, according to the following procedure and acceptance criterion: Place the test specimen in an appropriate test fixture, then statically apply a tensile load along the ventilation hose axis at a maximum rat
33、e of 100 N/min until the ventilation hose separates from its connecting points. The force required to pull the ventilation hose apart from its connecting points shall be not less than 100 N. ISO 2014 All rights reserved 3BS ISO 12614-9:2014ISO 12614-9:2014(E) ISO 2014 All rights reservedICS 43.060.4
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