BS ISO BRITISH STANDARD 26867:2009 Road vehicles - Brake lining friction materials Friction behaviour assessment for automotive brake systems ICS 43.040.40 BSi NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BritishStandards BSISO 26867:2009 National foreword ThisBritish Standard is the UK implementation of IS0 26867:2009. The UK participation in its preparation was entrusted to Technical Committee AUE/11, Braking systems. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract.Users are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard Amendments/corrigenda issued since publication was published under the authority of the Standards Comments Policy and Strategy Date Committee on 31 August 2009 BSI 2009 ISBN 978 0 580 60418 8 标准分享网www.bzfxw.com免费下载 BS ISO 26867:2009 ISO INTERNATIONAL STANDARD 26867 First edition 2009-07-01 Road vehicles Brake lining friction materials Friction behaviour assessment for automotive brake systems Vehicules routiers-Materiaux de friction pour garnitures de freins- Evaluationdu comportement au frottement pourles systemesde freinageautomobiles Reference number ISO 26867:2009(E) 4 SO @ISO 2009 BS ISO 26867:2009 ISO 26867:2009(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the respons bility of not infringing Adobe's licensing policy. The ISO Central Secretariat accepts no liability in this area. Adobe is a trademark 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 ISsO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. COPYRIGHTPROTECTEDDOCUMENT @ISO2009 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 ISO's 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 [email protected] Web www.iso.org Published in Switzerland ii @ ISO 2009 - All rights reserved 标准分享网www.bzfxw.com免费下载 BSISO26867:2009 ISO26867:2009(E) Contents Page Foreword. Introduction. vi 1 Scope 2 Normative references 3 Terms and definitions.. 4 Symbolsandabbreviatedterms. 4.1 Symbols ... 4.2 Abbreviated terms... 5 Testconditionsandpreparation 5.1 Inertia for the front axle... 5.2 Inertia for the rear axle 5.3 Testwheel load 5.4 Pressure ramp rate.. 5.5 Maximum pressure.... 5.6 Pressure level with no power assist... 5.7 Sampling rate .. 5.8 Initial braketemperature 5.9 5.10 Temperature measurement 5.11 Brake fluid displacement measurement.. 5.12 Cooling air conditions ..... 5.13 Cooling air velocity or volume ... 5.14 Conditioning settings for temperature and absolute humidity (humidity ratio).. 5.15 Dynamometerrotationalspeedbetweenbrakeapplications.. 5.16 5.17 Direction of air concerning brake set-up ... 8 5.18 Brake cooling rate. 5.19 Wear measurement. 5.20 Lateral run-out........ 8 5.21 Rotorordrumcondition 5.22 Fadesections 5.23 Datacollection 9 6 Test procedures. 10 6.1 Test procedure for product monitoring with no optional brake applications ... 6.2 Test procedureforproduct developme