ISO INTERNATIONAL STANDARD 10521-2 First edition 2006-10-01 Road vehicles Road load - Part 2: Reproduction on chassis dynamometer Véhicules routiers- Résistance sur route - Partie 2: Reproduction sur banc dynamometrique Reference number ISO 10521-2:2006(E) @ ISO 2006 ISO 10521-2:2006(E) PDFdisclaimer 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 responsibility 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 ?ISO2006 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 @ ISO 2006 - All rights reserved ISO 10521-2:2006(E) Contents Page Foreword. iv Introductiol 1 Scope 2 Normative references 3 Terms and definitions. 4 Required overall measurement accuracy .... 5 Preparationforchassis-dynamometertest 5.1 Setting parameter 5.2 Laboratory condition. 5.2.1 Roller... 5.2.2 Roomtemperature 5.3 Preparation of chassis dynamometer.. 5.3.1 Inertia-mass setting.... 5.3.2 Preconditioningof chassisdynamometer. 5.4 Vehicle preparation.... 5.4.1 Tyre-pressure adjustment. 5.4.2 Vehicle setting.... 5.4.3 Vehicle preconditioning 6 Load setting on the chassis dynamometer. 6.1 Chassis-dynamometer setting by coastdown method. 6.1.1 Load setting of chassis dynamometer.... 6.2 Chassis-dynamometer setting using torquemeter method.. 6.2.1 Load setting of chassis dynamometer.... Annex A (normative) Calculation of road load for the dynamometer test . 8 Annex B (normative) Adjustment of chassis-dynamometer setting load . ion'ghts reserved ili ISO 10521-2:2006(E) 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 through sO technical committees. Each member body interested in a subject for which a technical committee has been non-governmental, in liaison with iso, also take part in the work. Iso collaborates closely with the InternationalElectrotechnicalCommission(lEC)onallmattersofelectrotechnicalstandardization. International Standards are drafted in accordance with the rules given in the ISO/lEC Directives, Part 2 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 this document may be the subject of patent rights. IsO shall not be held responsible for identifying any or all such patent rights. ISO 10521-2 was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 5, Engine tests. This first edition, together with IsO 10521-1, cancels and replaces IsO 10521:1992, which has been technically revised. ISO 10521 consists of the following parts, under the general title Road vehicles Road load: Part 1: Determination under reference atmospheric conditions Part 2: Reproduction on chassis dynamometer @ IS0 2006 - All rights reserved ISO 10521-2:2006(E) Introduction This part of isO 10521 has been prepared to reflect the state-of-the-art technique