ISO-9112-2008.pdf
《ISO-9112-2008.pdf》由会员分享,可在线阅读,更多相关《ISO-9112-2008.pdf(14页珍藏版)》请在三一文库上搜索。
1、INTERNATIONAL STANDARD ISO 9112 Second edition 2008-02-15 Reference number ISO 9112:2008(E) ISO 2008 Truck and bus tyres Methods of measuring tyre rolling circumference Loaded new tyres Pneumatiques pour vhicules utilitaires et autobus Mthodes de mesure de la circonfrence de roulement Pneumatiques n
2、eufs en charge Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Boeing Co/5910770001 Not for Resale, 07/25/2008 03:38:45 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 9112:2008(E) ii ISO 2008 All rights reserved
3、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 unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file,
4、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 of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relat
5、ive 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 the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. COPYRI
6、GHT PROTECTED DOCUMENT ISO 2008 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 o
7、r 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 copyrightiso.org Web www.iso.org Published in Switzerland Copyright International Organization for Standardization Provided by IHS under lice
8、nse with ISO Licensee=Boeing Co/5910770001 Not for Resale, 07/25/2008 03:38:45 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 9112:2008(E) ISO 2008 All rights reserved iii Foreword ISO (the International Organization for Standardization) is a worldwide federation of na
9、tional 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 on that committee. Intern
10、ational 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 drafted in accordance with the
11、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 Standard requires approval by
12、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 9112 was prepared by Technical Committee ISO/T
13、C 31, Tyres, rims and valves, Subcommittee SC 4, Truck and bus tyres and rims. This second edition cancels and replaces the first edition (ISO 9112:1991), which has been technically revised. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Boei
14、ng Co/5910770001 Not for Resale, 07/25/2008 03:38:45 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 9112:2008(E) iv ISO 2008 All rights reserved Introduction The distance covered by a vehicle in a straight line in one wheel revolution is information that is increasingl
15、y used by the electronic systems in vehicles. One reason is that it makes it possible to indicate the instantaneous vehicle speed to the driver. Its evaluation uses the rolling circumference of the tyre in normal usage conditions: tyre deflected by the carried load and inflated to an adapted pressur
16、e level. A standardized measuring method is necessary because some parameters, such as tyre load and pressure, can cause the rolling circumference to change. This International Standard contributes to tyres being interchangeable for a given vehicle. Its application by tyre manufacturers allows confi
17、dence to be maintained in the information provided to the driver, especially concerning speed and distance travelled. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Boeing Co/5910770001 Not for Resale, 07/25/2008 03:38:45 MDTNo reproduction o
18、r networking permitted without license from IHS -,-,- INTERNATIONAL STANDARDISO 9112:2008(E) ISO 2008 All rights reserved 1 Truck and bus tyres Methods of measuring tyre rolling circumference Loaded new tyres 1Scope This International Standard specifies two methods for measuring the rolling circumfe
19、rence and the number of revolutions per unit distance (kilometre) of new commercial vehicle tyres, under loaded conditions, for use on trucks and buses. The first method is a drum method consisting of loading a test tyre mounted on a free axle against a driven road wheel (or drum) of specified diame
20、ter. The second method involves a vehicle whose drive axle is equipped with the test tyres driven on a straight, paved road. The values thus obtained are not intended for use as levels of performance or quality. This International Standard applies to all truck and bus tyres. NOTEThis International S
21、tandard applies not only to large truck and bus tyres, but also to small truck and bus tyres, which are called “light truck tyres” in some countries. 2Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the editio
22、n cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 4209-1, Truck and bus tyres and rims (metric series) Part 1: Tyres 3Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 r
23、evolutions per unit distance number of tyre revolutions (and portions thereof) that occur when the (axle) centre of the tyre is moved exactly the unit distance of , under the conditions specified in this International Standard 3.2 rolling circumference of tyre distance that the (axle) centre of the
24、tyre moves in one revolution of the tyre, under the conditions specified in this International Standard 3.3 reference speed speed at which the test is intended to be performed and which is related to the delivered value of the rolling circumference 1 km Copyright International Organization for Stand
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- ISO 9112 2008
链接地址:https://www.31doc.com/p-3779812.html