BS ISO 7116-2011 Mopeds Measurement method for determining maximum speed《轻便摩托车 最大速度的测量方法》.pdf

1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS ISO 7116:2011Mopeds Measurementmethod for determiningmaximum speedBS ISO 7116:2011 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 7116:

2、2011.The UK participation in its preparation was entrusted to TechnicalCommittee AUE/14, Motor cycles and mopeds.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Us

3、ers are responsible for its correctapplication. BSI 2011ISBN 978 0 580 62077 5ICS 43.140Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 March 2011.Amendments is

4、sued since publicationDate Text affectedBS ISO 7116:2011Reference numberISO 7116:2011(E)ISO 2011INTERNATIONAL STANDARD ISO7116Third edition2011-02-01Mopeds Measurement method for determining maximum speed Cyclomoteurs Mthode de mesure pour dterminer la vitesse maximale BS ISO 7116:2011ISO 7116:2011(

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8、YRIGHT PROTECTED DOCUMENT ISO 2011 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 belo

9、w 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 copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2011 All rights reservedBS ISO 7116:2011ISO 7116:2011(E) ISO 2011 All rig

10、hts reserved iiiContents Page Foreword iv Introduction.v 1 Scope1 2 Normative references1 3 Terms and definitions .1 4 Symbols2 5 Standard reference conditions 2 6 Preparation of test moped3 7 Rider and riding position3 8 Measurement equipment and accuracies.3 8.1 Measurement equipment 3 8.2 Measure

11、ment accuracies4 9 Test tracks4 9.1 General requirements .4 9.2 Composition.5 9.3 Possible shapes and specific requirements 5 10 Atmospheric conditions .7 11 Test procedure and calculation of average speed.8 11.1 General requirements .8 11.2 Measurement .8 11.3 Single-direction test9 12 Presentation

12、 of results10 12.1 The maximum speed.10 12.2 Test report10 Annex A (informative) Procedure for determining the acceleration distance 11 Annex B (normative) Presentation of results of maximum speed.15 Bibliography18 BS ISO 7116:2011ISO 7116:2011(E) iv ISO 2011 All rights reservedForeword ISO (the Int

13、ernational 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 ISO technical committees. Each member body interested in a subject for which a technical committee ha

14、s been established has the right to be represented 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

15、standardization. International Standards are drafted 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 bodie

16、s 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 o

17、r all such patent rights. ISO 7116 was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 23, Mopeds. This third edition cancels and replaces the second edition (ISO 7116:1995), which has been technically revised. BS ISO 7116:2011ISO 7116:2011(E) ISO 2011 All rights reserved v

18、Introduction In this third edition of ISO 7116, all the test methods and conditions, such as accuracy of measuring system and climatic conditions, are reviewed and updated for the purpose of obtaining measurement results with higher accuracy. The test method and conditions on circle type test tracks

19、, which are used in several regions, are also revised substantially in view of the similarity with testing results on straight test tracks. BS ISO 7116:2011BS ISO 7116:2011INTERNATIONAL STANDARD ISO 7116:2011(E) ISO 2011 All rights reserved 1Mopeds Measurement method for determining maximum speed 1

20、Scope This International Standard specifies a method for determining the maximum speed of a moped as defined in ISO 3833. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undate

21、d references, the latest edition of the referenced document (including any amendments) applies. ISO 6726, Mopeds and motorcycles with two wheels Masses Vocabulary 3 Terms and definitions For the purposes of this document, the terms and definitions in ISO 6726 and the following apply. 3.1 maximum spe

22、ed vmaxhighest steady speed of test moped 3.2 moped kerb mass mkMoped dry mass to which is added the mass of the following: fuel: tank filled at least to 90 % of the capacity specified by the manufacturer; auxiliary equipment usually supplied by the manufacturer in addition to that necessary for nor

23、mal operation EXAMPLES Tool-kit, carrier(s), windscreen(s), protective equipment, etc. BS ISO 7116:2011ISO 7116:2011(E) 2 ISO 2011 All rights reserved4 Symbols Table 1 Symbols Symbols Definition Unit Alenaccuracy of measurement equipment of the measurement section length m Aspeedresultant accuracy o

24、f speed measurement % Atimeaccuracy of time measurement equipment s dTrelative air density during the test d0relative air density at the standard reference conditions espeedresultant speed measurement error of system km/h Lstlength of the measurement section of type 1, type 3 and type 5 test tracks

25、m Lst1length of the measurement section 1 of type 2 and type 4 test tracks m Lst2length of the measurement section 2 of type 2 and type 4 test tracks m pTtotal barometric pressure during test kPa p0total barometric pressure at standard reference conditions kPa TTair temperature during test K T0air t

26、emperature at standard reference conditions K t time to run the measurement section s tatime to run the measurement section in direction a s tbtime to run the measurement section in direction b s titime to run the measurement section test run i s v moped speed km/h vaveaverage speed of moped of two-

27、direction tests km/h vimoped speed test run i km/h vmaxmaximum speed of test moped km/h 0air volumetric mass kg/m35 Standard reference conditions The standard reference conditions shall be as follows: a) total barometric pressure, p0: 101,325 kPa; b) air temperature, T0: 293,15 K; c) relative humidi

28、ty, H0: 65 %; d) air volumetric mass, 0: 1,205 kg/m3; e) relative air density, d0: 0,931 9. BS ISO 7116:2011ISO 7116:2011(E) ISO 2011 All rights reserved 36 Preparation of test moped 6.1 The moped shall conform in all its parts and components with the production series or, if different, a full descr

29、iption of such differences shall be included in the test report. 6.2 The fuel feed, ignition devices and the viscosity of the oils for the moving mechanical parts shall be in accordance with the instructions given by the moped manufacturer. 6.3 The lubricants shall be those prescribed by the manufac

30、turer; the fuel shall be the commercial grade for the type of moped tested. 6.4 The moped engine and transmission shall be properly run in, according to the manufacturers instructions. 6.5 Before the test, all moped parts shall be stabilized at the normal temperature for the moped in use. 6.6 The te

31、st moped mass shall be the moped kerb mass. 6.7 The distribution of the load between the wheels shall be in accordance with the manufacturers instructions. 6.8 When installing the measurement instruments on the moped, care shall be taken to minimize their effects on the distribution of the load betw

32、een the wheels and the additional aerodynamic loss. 6.9 Tyres shall be inflated to the pressure specified by the manufacturer. 7 Rider and riding position 7.1 The rider shall wear a close-fitting suit, a protective helmet, eye protection, boots and gloves. 7.2 The rider in the conditions given in 7.

33、1 shall have a mass of 75 kg 2 kg and be 1,75 m 0,02 m tall. 7.3 The rider shall take the normal and safe riding position which is appropriate for attaining the maximum speed of the moped to be tested. The position shall allow the rider at all times to have proper control of the moped during the tes

34、t. The position of the rider shall remain as stable as possible in order to avoid any influence on the test results. The description of the position shall be given in the test report or may be replaced with photographs (either during motion or in a static position). 8 Measurement equipment and accur

35、acies 8.1 Measurement equipment Test equipment to measure the moped speed and the ambient atmospheric conditions shall be as follows: a) electronic time counter or equivalent time measurement system; b) photoelectric cell or equivalent sensor; c) measurement equipment for the distance between photoe

36、lectric cells; d) thermometer; e) barometer; f) humidity meter; g) anemometer. BS ISO 7116:2011ISO 7116:2011(E) 4 ISO 2011 All rights reservedThe photoelectric cell and electronic time counter system, or the equivalent system, shall be used to measure the moped speed. Care shall be taken with the se

37、t-up adjustment of photoelectric cells or equivalent sensors (e.g. height of the sensors and the crossing point of the photo-beam and the moped) so that the required accuracy of the length of measurement section is secured. The details of the system shall be given in the test report if the equivalen

38、t system is used. The function and accuracy of the test equipment shall be checked before use in the test. 8.2 Measurement accuracies 8.2.1 Accuracy of speed measurement system The error of measured moped speed is influenced by the total time to run the measurement section(s), t, the length of the m

39、easurement section(s), Lst, the accuracy of the time measurement equipment, Atime, and the accuracy of measurement equipment of the measurement section length, Alen. The length of the measurement section shall be chosen with reference to instrument accuracy and to the method of determining the runni

40、ng time, such that the actual speed is measured to an accuracy of 1 %. The accuracy of measurement equipment (e.g. the tape measure or the surveying instrument) of the measurement section(s) length, Alen, shall be given in the test report. The accuracy of time measurement equipment, Atime, is determ

41、ined by the accuracy of the electronic time counter system itself and the response time of the photoelectric cell sensor. Atimeshall be given in the test report. 8.2.2 Measurement accuracy of ambient atmospheric conditions The accuracies of equipment used to measure the ambient atmospheric condition

42、s shall be in accordance with Table 2. Table 2 Accuracy Parameter At measured value Resolution Wind speed 10 % 0,1 m/s Wind direction 5 Ambient temperature 1 K Barometric pressure 0,2 kPa Humidity 5 % 1 % 9 Test tracks 9.1 General requirements The test shall be carried out on a roadway that allows t

43、he maximum speed to be maintained over a measurement section(s) as defined in 9.2. The entry section of the measurement section shall have the same surface and longitudinal profile as the measurement section and be long enough to permit the moped to attain its maximum speed. The test track shall be

44、flat, level and smoothly paved. The road surface shall be dry and free of obstacles or wind barriers that might impede the measurement of the maximum speed. The test track shall have not more than 0,5 % longitudinal slope and not more than 3 % transverse slope, excluding the deceleration section(s).

45、 BS ISO 7116:2011ISO 7116:2011(E) ISO 2011 All rights reserved 5The difference in altitude between any two points on the measurement section shall not exceed 1 m. However, the slope to compensate the centrifugal force of loop type and circle type test tracks may be allowed. The shape and dimensions

46、of the test track and the location of the measurement section(s) shall be given in the test report or replaced by the figure. 9.2 Composition The test track shall consist of the following sections: a) the acceleration section to reach maximum speed; b) the maximum speed measurement section; c) the d

47、eceleration section to safely stop the test moped. 9.3 Possible shapes and specific requirements 9.3.1 The straight type test track 9.3.1.1 Type 1 The measurement section as shown in Figure 1 shall be located on the straight track. The acceleration sections to the left and right of the measurement s

48、ection shall be long enough to enable maximum speed to be attained at the measurement section. aMeasurement section. bDirection of moped, a. cDirection of moped, b. Figure 1 Test track type 1 9.3.1.2 Type 2 The two measurement sections, 1 and 2, whose lengths may be different, as shown in Figure 2,

49、shall be located at each end of the straight test track, and in a virtually straight line. aMeasurement section 1. bMeasurement section 2. cDirection of moped, a. dDirection of moped, b. Figure 2 Test track type 2 BS ISO 7116:2011ISO 7116:2011(E) 6 ISO 2011 All rights reserved9.3.2 The loop type test track 9.3.2.1 Type 3 The measurement section as shown in Figure 3 shall be located on the straight part of the loop track. The straight track lengths to the left and right of the measurement section