ISO INTERNATIONAL STANDARD 28580 Second edition 2018-07 Passenger car, truck and bus tyre rolling resistance measurement method 一: Single point test and correlation of measurement results Methode de mesure de la résistance au roulement des pneumatiques pour voitures particulieres, camions et autobus Essai a condition de mesure unique et correlation des resultats de mesure Reference number IS0 28580:2018(E) osi @ IS0 2018 Provided by IHS Markit under license with ANSI IS0 28580:2018(E) COPYRIGHTPROTECTEDDOCUMENT @IS02018 All rights reserved. Unless otherwise specified, or required in the context of its implementation, 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 below or ISO's member body in the country of the requester. ISO copyright office CP 40i: Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +41 22 749 01 11 Fax: +41 22 749 09 47 Email: [email protected] Website: www.iso.org Published in Switzerland ii @ IS0 2018 - All rights reserved Provided by IHS Markit under iense withANS IS0 28580:2018(E) Contents Page Foreword 1 Scope. 2 Normative references .... 3 Terms and definitions. 4 Test methods... 5 Test equipment .. 5.1 General. 5.2 Drum specifications. 5.2.1 Diameter 5.2.2 Surface. 5.2.3 Width. 5.3 Measuring rim..... 5.4 Load, alignment, control and instrumentation accuracies 5.5 Thermal environment. 5.5.1 Reference conditions. 5.5.2 Alternative conditions... 6 Test conditions . 6.1 General. 6.2 Test speeds. .6 6.3 Test load. 6.4 Test inflation pressure. 6.5 Duration and speed... 7 Test procedure 7.1 General. 7.2 Thermal conditioning. 7.3 Pressure adjustment.. 7.4 Warm-up.. 7.5 Measurement and recording. 7.6 Measurement of parasitic losses 7.6.1 General. 7.6.2 Skim test reading 7.6.3 Deceleration method. 7.7 Allowance for machines exceeding m criterion. 8 Data interpretation 8.1 Determination of parasitic losses 8.1.1 General. 8.1.2 Force method at tyre spindle, 8.1.3 Torque method at drum axis 10 8.1.4 Power method at drum axis..... 10 8.1.5 Deceleration method .. 10 8.2 Rolling resistance calculation... 8.2.1 General. 11 8.2.2 Force method at tyre spindle 8.2.3 Torque method at drum axis.. 8.2.4 Power method at drum axis . 8.2.5 Deceleration method .. 12 9 Data analysis ... 12 9.1 Rolling resistance coefficient. 12 9.2 Temperature correction... 12 9.3 Drum diameter correction.... 13 9.4 IS02018-All rights reserved iii Provided by IHS Markit under license with ANSI