1、BS ISO 362-3:2016Measurement of noise emittedby accelerating road vehicles Engineering methodPart 3: Indoor testing M and N categoriesBSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS ISO 362-3:2016 BRITISH STANDARDNational forewordThis British Standard is the UK im
2、plementation of ISO 362-3:2016.The UK participation in its preparation was entrusted to TechnicalCommittee EH/1/2, Transport noise.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
3、 of a contract. Users are responsible for its correctapplication. The British Standards Institution 2016.Published by BSI Standards Limited 2016ISBN 978 0 580 80468 7ICS 17.140.30Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under
4、 the authority of theStandards Policy and Strategy Committee on 31 July 2016.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dBS ISO 362-3:2016 ISO 2016Measurement of noise emitted by accelerating road vehicles Engineering method Part 3: Indoor testing M and N categoriesMesu
5、rage du bruit mis par les vhicules routiers en acclration Mthode dexpertise Partie 3: Essais lintrieur de catgories M et NINTERNATIONAL STANDARDISO362-3First edition2016-07-01Reference numberISO 362-3:2016(E)BS ISO 362-3:2016ISO 362-3:2016(E)ii ISO 2016 All rights reservedCOPYRIGHT PROTECTED DOCUMEN
6、T ISO 2016, Published 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 per
7、mission. Permission 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 362-3:2016ISO 362
8、-3:2016(E)Foreword vIntroduction vi1 Scope . 12 Normative references 13 Terms and definitions . 24 Symbols and abbreviated terms . 25 Acceleration for vehicles of categories M1 and M2 having a maximum authorized mass not exceeding 3 500 kg, and of category N1 55.1 General . 55.1.1 Applicability and
9、conditions 55.1.2 Calculation of total engine power . 55.1.3 Battery state of charge 55.2 Calculation of acceleration 55.2.1 Calculation procedure for vehicles with manual transmission, automatic transmission, adaptive transmission, and continuously variable transmission (CVT) tested with locked gea
10、r ratios . 55.2.2 Calculation procedure for vehicles with automatic transmission, adaptive transmission, and CVT tested with non-locked gear ratios 55.3 Calculation of the target acceleration 65.4 Calculation of the reference acceleration . 65.5 Partial power factor, kP.66 Instrumentation 66.1 Instr
11、uments for acoustical measurement 66.1.1 General 66.1.2 Calibration . 76.2 Conformity with requirements . 76.3 Instrumentation for speed measurement . 76.4 Meteorological instrumentation 77 Test room requirements . 77.1 General . 77.2 Test room dimensions 87.3 Acoustical qualification of the room 10
12、7.3.1 General. 107.3.2 Validation of free-field conditions .107.3.3 Qualification procedure 137.4 Condition of the floor . 147.5 Cooling, ventilation, air temperature, exhaust gas management .147.6 Background noise 148 Dynamometer requirements 158.1 Type of texture of the rollers . 158.2 Diameter of
13、 the rollers 158.3 Reproducibility of the pass-by dynamics 158.4 Single-axle or multi-axle operation 168.5 Noise emission limit under operating conditions produced by the dynamometer rollers 169 Test procedures 169.1 General 169.2 Microphone array Hardware and software 169.3 Vehicle fixing system .
14、179.4 Conditions of the vehicle . 179.4.1 General conditions 179.4.2 Test mass of the vehicle 17 ISO 2016 All rights reserved iiiContents PageBS ISO 362-3:2016ISO 362-3:2016(E)9.4.3 Tyre selection and tyre condition 189.5 Operating conditions 199.5.1 Vehicles of categories M1, M2 having a maximum au
15、thorized mass not exceeding 3 500 kg, and N1 . 199.5.2 Vehicles of categories M2 having a maximum authorized mass exceeding 3 500 kg, M3, N2 and N3 199.6 Measurement readings and reported values . 209.6.1 General. 209.6.2 Data compilation .219.6.3 Vehicles of categories M1 and M2 having a maximum au
16、thorized mass not exceeding 3 500 kg, and of category N1 .219.6.4 Vehicles of categories M2 having a maximum authorized mass exceeding 3 500 kg, M3, N2, and N3 . 219.7 Measurement uncertainty 2110 Test methods and test report .2210.1 General 2210.2 Variant A 2210.2.1 General. 2210.2.2 Power train no
17、ise .2210.2.3 Tyre/road noise .2210.2.4 Calculation of the total vehicle noise using variant A .2310.3 Test report 23Annex A (normative) Validation of method 24Annex B (normative) Procedure for measurement, evaluation, and calculation of tyre/road noise when using variant A.28Annex C (informative) P
18、rocedure for measurement, evaluation, and calculation of tyre/road noise when using variant B 41Annex D (informative) Measurement uncertainty Framework for analysis according to ISO/IEC Guide 98-3 43Annex E (informative) Room length deviation from recommendation .49Bibliography .51iv ISO 2016 All ri
19、ghts reservedBS ISO 362-3:2016ISO 362-3:2016(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 mem
20、ber 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 El
21、ectrotechnical 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
22、 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 he
23、ld 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 informatio
24、n 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 in the Technical Barriers
25、 to Trade (TBT) see the following URL: www.iso.org/iso/foreword.html.The committee responsible for this document is ISO/TC 43, Acoustics, Subcommittee SC 1, Noise.ISO 362 consists of the following parts, under the general title Measurement of noise emitted by accelerating road vehicles Engineering m
26、ethod: Part 1: M and N categories Part 2: L category Part 3: Indoor testing M and N categories ISO 2016 All rights reserved vBS ISO 362-3:2016ISO 362-3:2016(E)IntroductionThe external sound emission of a vehicle is one out of a multitude of requirements that need to be considered by manufacturers du
27、ring design and development of vehicles. For health and environmental protection reasons, the sound emission should be reduced under all relevant driving conditions. However, there is a growing awareness that vehicles must not be too quiet either to ensure that they are still acoustically perceivabl
28、e by pedestrians and dont endanger them as they might be missed.To meet all these demands, an efficient test site is needed that can be operated the whole year round independent of weather conditions or other outside factors. In many countries, the meteorological conditions are so adverse that outdo
29、or testing on a classical proving ground is only possible in a very limited timeframe. While this was acceptable in the past, the increasing workload in the future will make it nearly impossible to do the complete development of a vehicle on a single test track at one particular place. However, perf
30、orming sound emission tests on various test tracks highly increases the uncertainty and multiplies the workload for a manufacturer.This part of ISO 362 gives specifications for an indoor noise test bench and a test procedure that delivers precise results for indoor testing, comparable to a certified
31、 type approval test track. The results are intended to be within the run-to-run variation of the actual valid exterior noise test described in ISO 362-1, which is the test standard used for type approval of vehicles.An indoor test bench requires tight specifications for the equipment and set up, suc
32、h as the acoustical treatment, the microphone arrays, the roller bench, the adjustment for the dynamic behaviour of the vehicle on the roller test bench, the preconditioning of the vehicle, as well as the thermal conditions for testing. Special treatment needs to ensure that all rolling sound compon
33、ents of the tire are comparable to the rolling sound on a road surface as specified in ISO 10844 and as applied in type approvals.It is conceivable that in the future, certain sound emissions of vehicles (like e.g. minimum sound emission of electric vehicles) can be verified on an indoor test bench,
34、 as the natural background noise might prohibit testing on a classical outdoor test track. The specifications set forth in this part of ISO 362 could be transferred to a future minimum noise test procedure.This part of ISO 362 provides all necessary specifications and procedures to ensure comparabil
35、ity between todays common and well accepted testing on outdoor test tracks with future indoor facilities. It incorporates all relevant International Standards for equipment, measurement uncertainty, and test procedures.vi ISO 2016 All rights reservedBS ISO 362-3:2016Measurement of noise emitted by a
36、ccelerating road vehicles Engineering method Part 3: Indoor testing M and N categories1 ScopeThis part of ISO 362 specifies an engineering method for measuring the noise emitted by road vehicles of categories M and N by using a semi anechoic chamber.The specifications are intended to achieve an acou
37、stical correlation between testing the exterior noise of road vehicles in a semi anechoic chamber and outdoor testing as described in ISO 362-1.This part of ISO 362 provides all necessary specifications and procedures for indoor testing to obtain results which are comparable to typical run-to-run va
38、riations of measurements in todays type approval tests.This part of ISO 362 provides a method designed to meet the requirements of simplicity as far as they are consistent with the reproducibility of results under the operating conditions of the vehicle.NOTE 1 The results obtained by this method giv
39、e an objective measure of the noise emitted under the specified conditions of test. It is necessary to consider the fact that the subjective appraisal of the noise annoyance of different classes of motor vehicles is not simply related to the indications of a sound measuring system. As annoyance is s
40、trongly related to personal human perception, physiological human conditions, culture, and environmental conditions, there is a large variation and annoyance is therefore not useful as a parameter to describe a specific vehicle condition.NOTE 2 If measurements are carried out in rooms which do not f
41、ulfill the requirements stated in this part of ISO 362, the results obtained can deviate from the results using the specified conditions.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For date
42、d references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 362-1:2015, Measurement of noise emitted by accelerating road vehicles Engineering method Part 1: M and N categoriesISO 1176, Road vehicles Masse
43、s Vocabulary and codesISO 2416, Passenger cars Mass distributionISO 3745, Acoustics Determination of sound power levels and sound energy levels of noise sources using sound pressure Precision methods for anechoic rooms and hemi-anechoic roomsISO 10844, Acoustics Specification of test tracks for meas
44、uring noise emitted by road vehicles and their tyresISO 26101, Acoustics Test methods for the qualification of free-field environmentsIEC 60942, Electroacoustics Sound calibratorsIEC 61672-1, Electroacoustics Sound level meters Part 1: SpecificationsINTERNATIONAL STANDARD ISO 362-3:2016(E) ISO 2016
45、All rights reserved 1BS ISO 362-3:2016ISO 362-3:2016(E)IEC 61672-3, Electroacoustics Sound level meters Part 3: Periodic testsISO/IEC Guide 98-3, Uncertainty of measurement Part 3: Guide to the expression of uncertainty in measurement (GUM)3 Terms and definitionsFor the purposes of this document, th
46、e terms and definitions given in ISO 362-1, ISO 1176, and ISO 2416, and the following apply.3.1pre-accelerationapplication of acceleration control device prior to the virtual line AA for the purpose of achieving stable acceleration between line AA and line BB on the test trackNote 1 to entry: See Fi
47、gure 1.3.2virtual test track lengthlvirtual length of test track used in the calculation of accelerationNote 1 to entry: The virtual length of test track from line AA to line BB is denoted lABand the virtual length from line PP to line BB is lPB.Note 2 to entry: See Figure 1.4 Symbols and abbreviate
48、d termsTable 1 lists the symbols used in this part of ISO 362 and the clause number where they are used for the first time.Table 1 Symbols used and corresponding clausesSymbol Unit Clause Designationa, aPTNm/s2B.3.3 vehicle acceleration (at power train noise measurement)AA 3.1 line perpendicular to
49、vehicle travel which indicates beginning of zone in which to record sound pressure level during testBB 3.1 line perpendicular to vehicle travel which indicates end of zone in which to record sound pressure level during testC dB/C B.2.4 temperature correction coefficientdabsorbm 7.2 thickness of absorbing elementsdrollerm 5.1.1 diameter of dynamometerrollerFCordB(A) C.4 correction for tyre/road noise in variant BFTEXD.2 texture of the test track surfaceh % D.2 relative air humiditykcrs
