1、BSI Standards PublicationBS ISO 12614-18:2014Road vehicles Liquefiednatural gas (LNG) fuel systemcomponentsPart 18: Gas temperature sensorBS ISO 12614-18:2014 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO12614-18:2014.The UK participation in its preparation w
2、as 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 responsible for
3、its correctapplication. The British Standards Institution 2014. Published by BSI StandardsLimited 2014ISBN 978 0 580 77165 1ICS 43.060.40Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and
4、Strategy Committee on 31 July 2014.Amendments issued since publicationDate Text affectedBS ISO 12614-18:2014 ISO 2014Road vehicles Liquefied natural gas (LNG) fuel system components Part 18: Gas temperature sensorVhicules routiers quipements pour vhicules utilisant le gaz naturel liqufi (GNL) comme
5、combustible Partie 18: Capteur de temprature de gazINTERNATIONAL STANDARDISO12614-18First edition2014-07-01Reference numberISO 12614-18:2014(E)BS ISO 12614-18:2014ISO 12614-18:2014(E)ii ISO 2014 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2014All rights reserved. Unless otherwise specified,
6、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 ISOs mem
7、ber 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 12614-18:2014ISO 12614-18:2014(E) ISO 2014 All rights reserved iiiContents PageForeword iv1 Sc
8、ope . 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 Insulation resistance 36.5 Minimum operating voltage 3Bibliography 4BS ISO 12614-18:2014ISO 12614-18:2014(E)ForewordISO (the Inter
9、national 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
10、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 st
11、andardization.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 accor
12、dance 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. Detail
13、s 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 end
14、orsement.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 informationThe committee respo
15、nsible for this document is ISO/TC 22, Road 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
16、 and general test methods Part 3: Check valve Part 4: Manual valve Part 5: Tank pressure gauge Part 6: Pressure 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: Rigi
17、d fuel line in copper and its alloys Part 13: Pressure control regulator Part 14: Differential pressure fuel content gauge Part 15: Capacitance fuel content gaugeiv ISO 2014 All rights reservedBS ISO 12614-18:2014ISO 12614-18:2014(E) Part 16: Heat exchanger vaporizer Part 17: Natural gas detector Pa
18、rt 18: Gas temperature sensor ISO 2014 All rights reserved vBS ISO 12614-18:2014BS ISO 12614-18:2014Road vehicles Liquefied natural gas (LNG) fuel system components Part 18: Gas temperature sensor1 ScopeThis part of ISO 12614 specifies tests and requirements for the gas temperature sensor, a liquefi
19、ed natural gas fuel system component intended for use on the types of motor vehicles defined in ISO 3833. This part of ISO 12614 is not applicable to the following:a) fuel containers;b) stationary gas engines;c) container mounting hardware;d) electronic fuel management;e) refueling receptacles.NOTE
20、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 appropriate functional tests.NOTE 2 All references to pressure in this part of ISO 12614 are to be considered gauge pressures un
21、less 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 bar). (1 bar = 0,1 MPa = 105 Pa; 1 MPa = 1 N/mm2.) Other working pressures can be accommodated by adjusting the pressure by the appropriate factor (ratio). For example, a
22、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 indispensable for its application. For dated references, only the edition cited applies. For
23、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 natural gas (LNG) fuel system components
24、 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.INTERNATIONAL STANDARD ISO 12614-18:2014(E) ISO 2014 All rights reserved 1BS ISO 12614-18:2014ISO 12614-18:2014(E)4 MarkingMarking of the compon
25、ent shall provide sufficient information to allow the following to be traced:a) the manufacturers or the 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:a) the directi
26、on of flow (when necessary for correct installation);b) the type of fuel;c) the electrical ratings (if applicable);d) the symbol of the certification agency;e) the type approval number;f) the serial number or date code;g) a reference to this part of ISO 12614 (i.e. ISO 12614-18:2014).NOTE This infor
27、mation 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 assembly5.1 The gas temperature sensor shall comply with the applicable provisions of ISO 12614-1 and ISO 12614-2, and with the tests specified in
28、Clause 6.5.2 The gas temperature sensor shall be mounted on the outlet pipeline of the vaporizer of liquefied natural gas before the automatic shut-off valve.5.3 The outlet pipeline temperature sensor shall be equipped with signalization of temperature of the pipeline less than a set point on the da
29、shboard.5.4 The temperature set point is responsibility of the vehicle manufacturer. However, the temperature set point shall not be lower than 40 C.5.5 The gas temperature sensor can be made inactive for a short period of time after the engine starting for allowing heat exchanger warming. Setting o
30、f the period can be dependent on the ambient temperature. However, its length is responsibility of the vehicle manufacturer.5.6 The outlet of the gas temperature sensor can be joined to the ECU of the engine.5.7 The gas temperature sensor can be designed as a contact switch.6 Test6.1 ApplicabilityTh
31、e tests required to be carried out are indicated in Table 1.2 ISO 2014 All rights reservedBS ISO 12614-18:2014ISO 12614-18:2014(E)Table 1 Tests applicableTest ApplicableTest procedure as required by ISO 12614-2Specific test requirements of this part of ISO 12614Hydrostatic strength X X X (see 6.2)Le
32、akage X X X (see 6.3)Excess torque resistance X XBending moment X XContinued operationCorrosion resistance X XOxygen ageing X XElectrical overvoltages X XNon-metallic material immersion X XVibration resistance X XBrass material compatibility X XInsulation resistance X X X (see 6.4)Minimum operating
33、voltage X X X (see 6.5)6.2 Hydrostatic strengthThe gas temperature sensor shall be tested according to the procedure for testing hydrostatic strength specified in ISO 12614-2.Test pressure shall be 2,5 times of working pressure.6.3 LeakageTest temperatures and pressures are given in Table 2.Table 2
34、Test temperatures and pressuresTemperature CPressure (factor working pressure)First Second162 1,0 WP 0,25 WP20 0,25 WP1,5 WP85 or 120 0,25 WP6.4 Insulation resistance6.4.1 This test is designed to check for a potential failure of the insulation between the sensor connectors and the housing.6.4.2 App
35、ly 1 000 V d.c. between one of the connector pins and the housing of the temperature sensor for at least 2 s. The minimum allowable resistance shall be 240 k.6.5 Minimum operating voltageThe minimum voltage at which the instrument is able to produce a warning signal at room temperature shall be 8 V
36、for a 12 V system and 16 V for a 24 V system. ISO 2014 All rights reserved 3BS ISO 12614-18:2014ISO 12614-18:2014(E)Bibliography1 ISO 3833, Road vehicles Types Terms and definitions4 ISO 2014 All rights reservedBS ISO 12614-18:2014BS ISO 12614-18:2014ISO 12614-18:2014(E) ISO 2014 All rights reserved
37、ICS 43.060.40Price based on 4 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 Standards and other standardization products are p
38、ublished by BSI Standards Limited.British Standards Institution (BSI)BSI Group Headquarters389 Chiswick High Road London W4 4AL UKAbout usWe bring together business, industry, government, consumers, innovators and others to shape their combined experience and expertise into standards -based solution
39、s.The knowledge embodied in our standards has been carefully assembled in a dependable format and refined through our open consultation process. Organizations of all sizes and across all sectors choose standards to help them achieve their goals.Information on standardsWe can provide you with the kno
40、wledge that your organization needs to succeed. Find out more about British Standards by visiting our website at or contacting our Customer Services team or Knowledge Centre.Buying standardsYou can buy and download PDF versions of BSI publications, including British and adopted European and interna
41、tional standards, through our website at where hard copies can also be purchased. If you need international and foreign standards from other Standards Development Organizations, hard copies can be ordered from our Customer Services team.SubscriptionsOur range of subscription services are designed t
42、o make using standards easier for you. For further information on our subscription products go to British Standards Online (BSOL) youll have instant access to over 55,000 British and adopted European and international standards from your desktop. Its available 24/7 and is refreshed daily so youll a
43、lways be up to date. You can keep in touch with standards developments and receive substantial discounts on the purchase price of standards, both in single copy and subscription format, by becoming a BSI Subscribing Member. PLUS is an updating service exclusive to BSI Subscribing Members. You will a
44、utomatically receive the latest hard copy of your standards when theyre revised or replaced. To find out more about becoming a BSI Subscribing Member and the benefits of membership, please visit a Multi-User Network Licence (MUNL) you are able to host standards publications on your intranet. Licenc
45、es can cover as few or as many users as you wish. With updates supplied as soon as theyre available, you can be sure your documentation is current. For further information, email .RevisionsOur British Standards and other publications are updated by amendment or revision. We continually improve the q
46、uality of our products and services to benefit your business. If you find an inaccuracy or ambiguity within a British Standard or other BSI publication please inform the Knowledge Centre.CopyrightAll the data, software and documentation set out in all British Standards and other BSI publications are
47、 the property of and copyrighted by BSI, or some person or entity that owns copyright in the information used (such as the international standardization bodies) and has formally licensed such information to BSI for commercial publication and use. Except as permitted under the Copyright, Designs and
48、Patents Act 1988 no extract may be reproduced, stored in a retrieval system or transmitted in any form or by any means electronic, photocopying, recording or otherwise without prior written permission from BSI. Details and advice can be obtained from the Copyright & Licensing Department.Useful Contacts:Customer ServicesTel: +44 845 086 9001Email (orders): Email (enquiries): SubscriptionsTel: +44 845 086 9001Email: Knowledge CentreTel: +44 20 8996 7004Email: Copyright & LicensingTel: +44 20 8996 7070Email: NO COPYING WITHOUT BSI PERMISSI
