BS ISO 26867-2009 Road vehicles - Brake lining friction materials - Friction behaviour assessment for automotive brake systems《道路车辆 刹车片摩擦材料 汽车刹车系统摩擦性能评定》.pdf
《BS ISO 26867-2009 Road vehicles - Brake lining friction materials - Friction behaviour assessment for automotive brake systems《道路车辆 刹车片摩擦材料 汽车刹车系统摩擦性能评定》.pdf》由会员分享,可在线阅读,更多相关《BS ISO 26867-2009 Road vehicles - Brake lining friction materials - Friction behaviour assessment for automotive brake systems《道路车辆 刹车片摩擦材料 汽车刹车系统摩擦性能评定》.pdf(36页珍藏版)》请在麦多课文档分享上搜索。
1、BS ISO26867:2009ICS 43.040.40NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDRoad vehicles Brake lining frictionmaterials Frictionbehaviour assessmentfor automotive brakesystemsThis British Standardwas published under theauthority of the StandardsPolicy and Stra
2、tegyCommittee on 31 August2009 BSI 2009ISBN 978 0 580 60418 8Amendments/corrigenda issued since publicationDate CommentsBS ISO 26867:2009National forewordThis British Standard is the UK implementation of ISO 26867:2009.The UK participation in its preparation was entrusted to TechnicalCommittee AUE/1
3、1, Braking systems.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisionsof a contract. Users are responsible for its correct application.Compliance with a British Standard cannot conf
4、er immunityfrom legal obligations.BS ISO 26867:2009Reference numberISO 26867:2009(E)ISO 2009INTERNATIONAL STANDARD ISO26867First edition2009-07-01Road vehicles Brake lining friction materials Friction behaviour assessment for automotive brake systems Vhicules routiers Matriaux de friction pour garni
5、tures de freins valuation du comportement au frottement pour les systmes de freinage automobiles BS ISO 26867:2009ISO 26867:2009(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not be edited unle
6、ss the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the responsibility of not infringing Adobes licensing policy. The ISO Central Secretariat accepts no liability in this area. Adobe is a trademark
7、 of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In
8、 the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. COPYRIGHT PROTECTED DOCUMENT ISO 2009 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
9、electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member 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 copyright
10、iso.org Web www.iso.org Published in Switzerland ii ISO 2009 All rights reservedBS ISO 26867:2009ISO 26867:2009(E) ISO 2009 All rights reserved iiiContents Page Foreword. v Introduction . vi 1 Scope . 1 2 Normative references . 1 3 Terms and definitions. 1 4 Symbols and abbreviated terms . 4 4.1 Sym
11、bols . 4 4.2 Abbreviated terms 6 5 Test conditions and preparation . 6 5.1 Inertia for the front axle 6 5.2 Inertia for the rear axle . 6 5.3 Test wheel load . 6 5.4 Pressure ramp rate . 6 5.5 Maximum pressure . 6 5.6 Pressure level with no power assist. 7 5.7 Sampling rate 7 5.8 Initial brake tempe
12、rature 7 5.9 Brake warm-up 7 5.10 Temperature measurement 7 5.11 Brake fluid displacement measurement. 7 5.12 Cooling air conditions 7 5.13 Cooling air velocity or volume 7 5.14 Conditioning settings for temperature and absolute humidity (humidity ratio) 7 5.15 Dynamometer rotational speed between b
13、rake applications. 8 5.16 Orientation of brake set-up 8 5.17 Direction of air concerning brake set-up . 8 5.18 Brake cooling rate. 8 5.19 Wear measurement. 8 5.20 Lateral run-out. 8 5.21 Rotor or drum condition. 8 5.22 Fade sections 8 5.23 Data collection 9 6 Test procedures 10 6.1 Test procedure fo
14、r product monitoring with no optional brake applications 10 6.2 Test procedure for product development with additional brake applications . 12 6.3 Standard friction values calculated during test procedure 14 7 Test report . 15 7.1 General. 15 7.2 Graphical report 15 7.3 Tabular data for each brake a
15、pplication. 15 7.4 Wear measurements. 15 7.5 Test conditions . 15 7.6 Cooling air conditions 15 7.7 Brake cooling rate. 16 7.8 Friction values. 16 7.9 Statistical analysis 16 Annex A (informative) Sample report for disc brakes 17 BS ISO 26867:2009ISO 26867:2009(E) iv ISO 2009 All rights reservedAnne
16、x B (informative) Histograms for instantaneous friction values. 20 Annex C (informative) Reference calculations for cooling air speed and flow 22 Bibliography . 24 BS ISO 26867:2009ISO 26867:2009(E) ISO 2009 All rights reserved vForeword ISO (the International Organization for Standardization) is a
17、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 represented
18、 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. International Standards are draft
19、ed in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Stan
20、dard 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 this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 26867 was prepared b
21、y Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 2, Braking systems and equipment. BS ISO 26867:2009ISO 26867:2009(E) vi ISO 2009 All rights reservedIntroduction In the process of harmonizing automotive brake system applications, the modernization of friction behaviour characterizatio
22、n is a top priority. This International Standard is intended to replace previous friction evaluation test procedures based solely on drag brake applications, which do not take into account real-life driving conditions or vehicle specific parameters. The varied conditions under which the friction mat
23、erial is evaluated ensures a wide spectrum of data, which is critical during the various phases of product life, such as product and manufacturing process development, production validation, quality control, product auditing and field issues evaluation. This International Standard is intended to be
24、used in conjunction with other applicable standards or test procedures (ISO, SAE, JIS/JASO, Federal Codes or Regulations, and other project or company-specific testing programmes) to fully assess the adequacy of a friction material for use in a certain application, market or vehicle platform. This I
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