ISO-3929-2003.pdf
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1、 Reference number ISO 3929:2003(E) ISO 2003 INTERNATIONAL STANDARD ISO 3929 Third edition 2003-09-01 Road vehicles Measurement methods for exhaust gas emissions during inspection or maintenance Vhicules routiers Mthodes de mesure des missions gazeuses au cours des inspections ou de la maintenance IS
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5、n below. ISO 2003 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member
6、body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2003 All rights reserved -,-,- ISO 3929:2003(E) ISO 2003 All rights reserved iii Contents
7、Page Forewordiv 1 Scope1 2 Normative references .1 3 Terms and definitions.1 4 Instrumentation.2 5 Check, maintenance periodicity and precautions for use of instruments2 6 General vehicle verification .3 7 Normal conditioning of vehicle .3 8 Measured value corrections.4 9 Measurement methods for exh
8、aust gas emission 4 Bibliography .6 ISO 3929:2003(E) iv ISO 2003 All rights reserved Foreword ISO (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 thr
9、ough ISO technical committees. 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 collabo
10、rates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Stand
11、ards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of
12、this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 3929 was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 5, Engine tests. This third edition cancels and replaces the second edition (ISO
13、3929:1995), which has been technically revised. -,-,- INTERNATIONAL STANDARD ISO 3929:2003(E) ISO 2003 All rights reserved 1 Road vehicles Measurement methods for exhaust gas emissions during inspection or maintenance 1 Scope This International Standard specifies methods for the direct measurement o
14、f the concentration of exhaust gas emissions from road vehicles during inspection or maintenance. It is applicable to vehicles having a maximum authorized total mass (ISO-M08, as defined in ISO 1176) not exceeding 3,5 t, equipped with controlled ignition engines, but excluding those supplied with a
15、fuel/oil mixture (with or without automatic mixer). The methods can be used, either totally or partially, for periodic inspections in official garages, official roadside checks (e.g. by police), and maintenance and diagnostic operations. 2 Normative references The following referenced documents are
16、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 3930/OIML R 991), Instruments for measuring vehicle exhaust emissions ISO 162472), R
17、oad vehicles Detection of exhaust system leaks Helium test method and detection device specification 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 idle speed rotational frequency engine rotational frequency with fuel system controls (accele
18、rator, choke, etc.) non-operative, the gearshift lever in neutral and the clutch engaged for vehicles with manually operated or semi- automatic transmission, the gear selector in neutral or park for vehicles with automatic transmission, and accessories and optional equipment that modify the rotation
19、al frequency used in accordance with the manufacturers recommendations or regulatory requirements 1) Joint ISO/OIML (International Organization of Legal Metrology) document. 2) To be published. -,-,- ISO 3929:2003(E) 2 ISO 2003 All rights reserved 3.2 accelerated idle speed rotational frequency engi
20、ne rotational frequency specified by the manufacturer or regulatory requirements with fuel system controls (accelerator, choke, etc.) in the position to run at accelerated idle, the gearshift lever in neutral and the clutch engaged for vehicles with manually operated or semi- automatic transmission,
21、 the gear selector in neutral or park for vehicles with automatic transmission, and accessories and optional equipment that modify the rotational frequency used in accordance with the manufacturers recommendations or regulatory requirements 3.3 exhaust emission treatment system additional device int
22、ended to reduce the exhaust emission level 4 Instrumentation 4.1 Analyser in accordance with ISO 3930/OIML R 99, suitable for the concentrations of exhaust gas emission from the vehicle under test. 4.2 Engine oil temperature meter in the sump or lubricant reservoir with a measurement accuracy of at
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