1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS ISO 17479:2013Motorcycles Measurementmethods for gaseous exhaustemissions during inspection ormaintenanceBS ISO 17479:2013 BRITISH STANDARDNational forewordThis British Standa
2、rd is the UK implementation of ISO 17479:2013.The UK participation in its preparation was entrusted to TechnicalCommittee AUE/14, Motor cycles and mopeds.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all
3、the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2013. Published by BSI StandardsLimited 2013ISBN 978 0 580 80121 1ICS 13.040.50; 43.140Compliance with a British Standard cannot confer immunity fromlegal obligations.This Briti
4、sh Standard was published under the authority of theStandards Policy and Strategy Committee on 30 April 2013.Amendments issued since publicationDate Text affectedBS ISO 17479:2013 ISO 2013Motorcycles Measurement methods for gaseous exhaust emissions during inspection or maintenanceMotocycles Mthode
5、de mesure des missions gazeuses au cours des inspections ou de la maintenanceINTERNATIONAL STANDARDISO17479First edition2013-04-15Reference numberISO 17479:2013(E)BS ISO 17479:2013ISO 17479:2013(E)ii ISO 2013 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2013All rights reserved. Unless otherwi
6、se 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 from either ISO at the address bel
7、ow 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 17479:2013ISO 17479:2013(E) ISO 2013 All rights reserved iiiContents PageForewor
8、d ivIntroduction v1 Scope . 12 Normative references 13 Terms and definitions . 14 Instrumentation 15 Check, maintenance periodicity and precautions for use of instruments . 25.1 Check before use 25.2 Maintenance periodicity . 25.3 Precautions for use 26 General motorcycle verification . 27 Normal co
9、nditioning of motorcycle 37.1 Warming up . 37.2 Test conditions 38 Gaseous exhaust emissions and corrections . 39 Measurement methods for gaseous exhaust emissions 3Annex A (normative) Presentation of results 5Annex B (informative) Examples of gaseous exhaust emissions correction method. 8Bibliograp
10、hy .10BS ISO 17479:2013ISO 17479:2013(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 member bod
11、y 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 Electrote
12、chnical 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 of ISO
13、 documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2. www.iso.org/directivesAttention 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 responsibl
14、e 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. www.iso.org/patentsAny trade name used in this document is information given for the con
15、venience of users and does not constitute an endorsement.The committee responsible for this document is ISO/TC 22, Road vehicles, Subcommittee SC 22, Motorcycles.iv ISO 2013 All rights reservedBS ISO 17479:2013ISO 17479:2013(E)IntroductionThis International Standard specifies methods for the direct
16、measurement of the concentration of gaseous exhaust emissions from motorcycles during inspections, official roadside checks or maintenance. Although ISO 3929 specifies methods for the direct measurement of the concentration of gaseous exhaust emissions from road vehicles, this International Standard
17、 is the adaptation of ISO 3929 to comply with needs specific to motorcycles. ISO 2013 All rights reserved vBS ISO 17479:2013BS ISO 17479:2013Motorcycles Measurement methods for gaseous exhaust emissions during inspection or maintenance1 ScopeThis International Standard specifies methods for the dire
18、ct measurement of the concentration of gaseous exhaust emissions from motorcycles as defined in ISO 3833 during inspection or maintenance. The results measured by this International Standard show the concentration of gaseous exhaust emissions in the no-load engine operating condition. It is applicab
19、le to motorcycles having spark ignition engines (four-stroke engines or two-stroke engines). This methods can be used, either totally or partially, for periodic inspections in official garages, official roadside checks, and maintenance and diagnostic operations.2 Normative referencesThe following re
20、ferenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO/PAS 3930/OIML R991), Instruments for measuring vehicle exhaust
21、 emissions3 Terms and definitionsFor the purposes of this document, the following terms and definitions apply.3.1idling conditionno-load operating condition of engine warmed up in accordance with 7.1, with no manual operation with fuel system controls (throttle, choke, etc.); the gear in neutral, an
22、d the manual clutch engaged for motorcycles with the manual transmission; the parking condition for motorcycles with the automatic transmission; and standard production equipment, accessories and optional equipment that modify the engine speed used in accordance with the manufacturers recommendation
23、s or regulatory requirementsNote 1 to entry: Automatically operated headlamps are standard production equipment. There is a possibility that headlamp operation influences the test results of gaseous exhaust emissions.3.2idling speedengine speed (range) specified by the manufacturer under the idling
24、condition4 InstrumentationThe instruments listed below shall be prepared:4.1 Analyser, in accordance with ISO/PAS 3930/OIML R99, suitable for the concentrations of gaseous exhaust emissions from the motorcycles under test.1) Joint ISO/OIML (International Organization of Legal Metrology) document.INT
25、ERNATIONAL STANDARD ISO 17479:2013(E) ISO 2013 All rights reserved 1BS ISO 17479:2013ISO 17479:2013(E)4.2 Surface temperature meter, with a measurement accuracy of at least 2 K between 323 K and 373 K.4.3 Pulse revolution counter, for measuring engine speed. The measurement accuracy shall be at leas
26、t 20 min1between 600 min1and 2 000 min1, and shall be at least 50 min1between over 2 000 min1and 6 000 min1.4.4 Ambient temperature meter, with a measurement accuracy of at least 2 K between 278 K and 313 K.5 Check, maintenance periodicity and precautions for use of instruments5.1 Check before useTh
27、e power supply to the instruments shall be in accordance with the manufacturers specifications.Check that the instruments are ready for testing in accordance with the manufacturers operating instructions or, at least, at the beginning of tests of a day, when the ambient conditions have changed, or a
28、t the beginning of tests at each new test site in the case of official roadside checks.For the analyser, the zero and span calibration check shall be performed with reference gases or using electronic or electromechanical methods (see ISO/PAS 3930/OIML R99).5.2 Maintenance periodicityAll periodical
29、checks shall be carried out in accordance with national regulations. If national regulations do not specify maintenance periodicity, those shall be carried out in accordance with manufacturers instructions.Maintenance shall be carried out in accordance with the manufacturers instructions. Operations
30、 shall be recorded.5.3 Precautions for useThe working area shall be a firm, horizontal surface. Ambient conditions shall be in accordance with ISO/PAS 3930/OIML R99.The working area shall not be directly exposed to rain, snow or sunlight, interfering vibration, a corrosive and/or polluted atmosphere
31、 that might influence the measurement results, or electromagnetic interference that might influence measurement results.6 General motorcycle verificationThe exhaust system of the motorcycle shall be leak-proof.2 ISO 2013 All rights reservedBS ISO 17479:2013ISO 17479:2013(E)7 Normal conditioning of m
32、otorcycle7.1 Warming upThe motorcycle shall be warmed up in accordance with manufacturers specifications. If no warmed up condition is specified by the manufacturer, the motorcycle shall be warmed up in accordance with the following methods:a) for motorcycles equipped with four-stroke engines, the s
33、urface temperature of head of lubrication oil drain bolt shall be achieved between 328 K and 343 K by maintaining the engine speed between 3 000 min1and 6 000 min1. If the engine is over heated, the temperature may be adjusted with the external cooling fan under idling condition;b) for motorcycles e
34、quipped with two-stroke engines, the motorcycle shall be warmed up by running at least 15 min or at least 5 km under normal urban traffic conditions.In cases where the automatic choke is still on at the end of the warming up procedure, attention shall be paid in order to extend the warming up proced
35、ure to bring the automatic choke to switch off.7.2 Test conditionsThe choke shall be non-operative or no longer operative.The motorcycle shall be located on a substantially horizontal site.The sampling probe shall be inserted at least 600 mm into the exhaust outlet pipe. If the exhaust pipe shape do
36、es not allow such insertion, an extension exhaust pipe shall be provided.In the case of plural exhaust pipes, these shall be connected into a single outlet unless specified otherwise by the manufacturer. If this type of connection is not practicable, the arithmetic average of the concentration value
37、s, measured at each outlet, shall be adopted. In any case, the exhaust adaptor used shall not influence engine running and measurement results.8 Gaseous exhaust emissions and correctionsThe gaseous exhaust emissions which are measured shall be in accordance with national requirements and the measure
38、d values shall be corrected in accordance with national requirements. Examples of correction methods are described in Annex B. For the case of no national requirement, the correction method in B.2 is recommended.9 Measurement methods for gaseous exhaust emissions9.1 Warm up the motorcycle in accorda
39、nce with 7.1 and keep the idling condition.9.2 Equip the motorcycle immediately with a revolution counter, and an extension exhaust pipe, if necessary.9.3 Check that the engine speed measured at idling condition is within the manufacturers specification range (i.e. idling speed). If the engine speed
40、 is different from idling speed, adjust the engine speed to idling speed. If it is not possible to meet the manufactures specification, the measurement may be continued. The measured idling speed shall be described in the test report.9.4 Select the highest analyser scale and put the analyser in meas
41、urement mode. ISO 2013 All rights reserved 3BS ISO 17479:2013ISO 17479:2013(E)9.5 Insert the probe into the exhaust pipe or its extension.9.6 Check that the appropriate scale has been selected and change if necessary.9.7 After at least 15 s from insertion of the probe, carry out the measurements ove
42、r sufficient time but not exceeding 30 s to obtain minimum and maximum values. Calculate the arithmetic mean of these two values.9.8 If one step between 9.1 and 9.7 fails, repeat steps from 9.1 to 9.7.9.9 If all test procedures are successfully completed, the measured maximum, measured minimum and a
43、rithmetic mean values of gaseous exhaust emissions shall be described in the test report in Annex A.4 ISO 2013 All rights reservedBS ISO 17479:2013ISO 17479:2013(E)Annex A (normative) Presentation of results ISO 2013 All rights reserved 5BS ISO 17479:2013ISO 17479:2013(E)A.1 Motorcycle Category: two
44、 wheeler/three wheeler (delete as applicable) Tradename (-mark): Model: Engine model: Cycle: two stroke/four stroke (delete as applicable) Number and layout of cylinders: Engine displacement: cm3Gear-box: manual/automatic (delete as applicable) Secondary air system: with/without (delete as applicabl
45、e) Others, if there is any alternation: A.2 Gaseous exhaust emissions analyser Tradename (-mark): Model: A.3 Test conditions Climate: Test ambient temperature: K Surface temperature of head of lubrication oil drain bolt (for four-stroke engine only): K A.4 Measurement results Idling speed specig976i
46、ed by manufacturer: min-1Measured engine speed: min-1Measured minimum value Measured maximum value Arithmetic mean value CO a: vol. % vol. % vol. % HC ab: vol. ppm vol. ppm vol. ppm Only for an engine g976itted with a secondary air system: Measured minimum value Measured maximum value Arithmetic mea
47、n value CO a: vol. % vol. % vol. % 6 ISO 2013 All rights reservedBS ISO 17479:2013ISO 17479:2013(E)CO2a: vol. % vol. % vol. % HC ab: vol. ppm vol. ppm vol. ppm If measued values are corrected, the correction method: Corrected arithmetic mean value CO a: vol. % HC ab: vol. ppm aDelete as applicable.
48、bn-hexane equivalent/methane equivalent (delete as applicable). ISO 2013 All rights reserved 7BS ISO 17479:2013ISO 17479:2013(E)Annex B (informative) Examples of gaseous exhaust emissions correction methodB.1 GeneralTwo kinds of gaseous exhaust emissions correction methods are specified by national
49、bodies in countries. Two correction methods are introduced in this annex for informative reasons. The two methods are the gaseous exhaust emissions correction method for an engine fitted with a secondary air system for carbon monoxide and hydrocarbon, and the gaseous exhaust emissions correction method for carbon monoxide.B.2 Gaseous exhaust emissions correction method for an engine fitted with a sec-ondary air systemFor an engine fitted with a secondary air system, carbo
