1、BS ISO10191:2010ICS 43.100; 83.160.10NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDPassenger cartyres Verifyingtyre capabilities Laboratory testmethodsThis British Standard was published under the authority of the Standards Policy and Strategy Committee on 31
2、March 2010 BSI 2010ISBN 978 0 580 69281 9Amendments/corrigenda issued since publicationDate CommentsBS ISO 10191:2010National forewordThis British Standard is the UK implementation of ISO 10191:2010. Itsupersedes BS AU 50-1.1.4b:1996 which is withdrawn.The UK participation in its preparation was ent
3、rusted to TechnicalCommittee AUE/4, Tyres and wheels for motor vehicles.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisionsof a contract. Users are responsible for its correct appli
4、cation. Compliance with a British Standard cannot confer immunityfrom legal obligations.BS ISO 10191:2010Reference numberISO 10191:2010(E)ISO 2010INTERNATIONAL STANDARD ISO10191Third edition2010-03-01Passenger car tyres Verifying tyre capabilities Laboratory test methods Pneumatiques pour voitures p
5、articulires Vrification de laptitude des pneumatiques Mthodes dessai en laboratoire BS ISO 10191:2010ISO 10191:2010(E) 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 typefa
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10、ww.iso.org Published in Switzerland ii ISO 2010 All rights reservedBS ISO 10191:2010ISO 10191:2010(E) ISO 2010 All rights reserved iiiContents Page Foreword iv 1 Scope1 2 Normative references1 3 Terms and definitions .1 4 Test equipment 2 5 Testing3 5.1 Strength test 3 5.2 Bead unseating test 5 5.3
11、Endurance test.7 5.4 High speed test7 6 Requirements.9 6.1 Test sample9 6.2 Strength test 9 6.3 Bead unseating resistance (tubeless tyres) . 10 6.4 Endurance test.11 6.5 High-speed test11 Annex A (informative) High-speed test Test conditions for tyres without service description marking.12 Bibliogra
12、phy14 BS ISO 10191:2010ISO 10191:2010(E) iv ISO 2010 All rights reservedForeword 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 ISO tech
13、nical 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. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely
14、 with the International Electrotechnical Commission (IEC) on all matters of electrotechnical 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 I
15、nternational Standards 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
16、 may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 10191 was prepared by Technical Committee ISO/TC 31, Tyres, rims and valves, Subcommittee SC 3, Passenger car tyres and rims. This third edition cancels and replaces the second
17、edition (ISO 10191:1995 and also ISO 10191:1995/Amd.1:1998), of which it constitutes a minor revision. BS ISO 10191:2010INTERNATIONAL STANDARD ISO 10191:2010(E) ISO 2010 All rights reserved 1Passenger car tyres Verifying tyre capabilities Laboratory test methods 1 Scope This lnternational Standard s
18、pecifies test methods for verifying the capabilities of tyres for passenger cars. Of the test methods presented, it is possible that only some will be required depending on the type of tyre to be tested. The tests are carried out in a laboratory under controlled conditions. This lnternational Standa
19、rd includes a strength test for assessing the capability of the tyre structure, with respect to braking energy, in the tread area. A second test, the bead unseating test, assesses the resistance of the tyre to bead unseating. It applies to tubeless tyres only. A third test, the endurance test, asses
20、ses the resistance of the tyre with respect to service at full load and moderate speed over long distances. The fourth test, the high speed test, assesses the capability of the tyre according to its speed category. The test methods presented in this lnternational Standard are not intended for gradat
21、ion of tyre performance or quality levels. This International Standard applies to all passenger car tyres. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, t
22、he latest edition of the referenced document (including any amendments) applies. ISO 4223-1:2002, Definitions of some terms used in the tyre industry Part 1: Pneumatic tyres 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 4223-1 and the following app
23、ly. 3.1 bead separation breakdown of bond between components in the bead area 3.2 belt separation parting of rubber compound between belt layers or between belts and plies 3.3 chunking breaking away of pieces of the tread BS ISO 10191:2010ISO 10191:2010(E) 2 ISO 2010 All rights reserved3.4 cord sepa
24、ration cord parting from adjacent rubber compounds 3.5 cracking any parting within the tread, or innerliner of the tyre extending to cord material 3.6 innerliner separation parting of innerliner from cord material in the carcass 3.7 open splice any parting at any junction of tread, or innerliner tha
25、t extends to cord material 3.8 ply separation separation of rubber compound between adjacent plies 3.9 separation parting of the rubber compound from the cord material in the sidewall 3.10 tread separation pulling away of the tread from the tyre carcass 3.11 test rim any rim on which the tyre may be
26、 fitted which conforms to the dimensions of the recommended rims for the particular tyre designation and type 3.12 test drum speed peripheral speed of the steel test drum 3.13 maximum load rating maximum load that the tyre is rated to carry according to its speed category 4 Test equipment 4.1 Test d
27、rum, cylindrical driven flywheel (drum) having a diameter of 1,7 m 20%+or 2 m 20%.+The surface of the drum shall be smooth steel. The width of the test surface shall be equal to or exceed the overall width of the test tyre. For the test drum, the loading device shall have a capacity of at least 1 00
28、0 kg and the accuracy shall be within 1 % of the full scale. The speed capability of the equipment shall be adequate for the requirements of the test methods. The accuracy of the test drum speed shall be within 20km/h.+4.2 Plunger, in cylindrical steel and of sufficient length with a hemispherical e
29、nd and a diameter of (19 1,6) mm. BS ISO 10191:2010ISO 10191:2010(E) ISO 2010 All rights reserved 3For the plunger equipment, the loading device shall permit gradual application of the force. lndicators of displacement and force provided shall be accurate to within 1% of full scale. The displacement
30、 speed shall be controlled with an accuracy within 3 % of the full scale. 4.3 Bead unseating block, of one of the two types shown in Figure 1. The bead unseating block loading device shall permit progressive application of the force. lndicators of displacement and force provided shall be accurate to
31、 within 1 % of full scale. The displacement speed of the head unseating block shall be controlled with an accuracy within 3 % of the full scale. 4.4 Inflation pressure gauges, with a maximum scale value of at least 500 kPa and an accuracy within 5 kPa. 5 Testing 5.1 Strength test 5.1.1 Preparation o
32、f tyre 5.1.1.1 Mount the tyre on a test rim and inflate it to the pressure specified in Table 1. 5.1.1.2 Maintain the assembly at test room for at least 3 h. Table 1 Inflation pressures for resistance test Tyre type Pressure kPa Standard 180 Reinforced/extra load 220 T type (temporary use) 360 NOTE
33、In case of other tyre types, the tyre manufacturer shall send a request to ISO for insertion in this table of a different test pressure, with reasons. BS ISO 10191:2010ISO 10191:2010(E) 4 ISO 2010 All rights reservedDimensions in millimetres Material: Al-Si2 Mg Ti or Al-Si7 Mg0,3 (see reference 2) C
34、ondition: TF (see reference 1) Surface roughness: Ra 1,25 m a) Type A b) Type B Figure 1 Diagrams of bead unseating blocks BS ISO 10191:2010ISO 10191:2010(E) ISO 2010 All rights reserved 55.1.2 Test procedure 5.1.2.1 Readjust the tyre pressure to that specified in 5.1.1.1 and mount the assembly on a
35、 fixture. 5.1.2.2 Position the plunger as near to the line as possible, avoiding penetration into the tread grooves, and force the plunger perpendicularly into the tread at a rate of (50 2,5) mm/min. 5.1.2.3 Record the force and penetration at the moment of breaking (see also 5.1.2.7) at each of fiv
36、e test points approximately equally spaced around the tyre circumference. Check the pressure before moving to the next test point. 5.1.2.4 If the tyre fails to break before the plunger is stopped on reaching the rim, then the tyre is deemed to have passed the test at that point. 5.1.2.5 Compute the
37、breaking energy, W, in joules for each test point, except those considered by means of the following formula: 2 000F PW= where F is the force, in newtons; P is the penetration, in millimetres. 5.1.2.6 Determine the breaking energy value for the tyre by computing the average of the values obtained. 5
38、.1.2.7 When an appropriate device is available, which automatically evaluates the value of the energy W, the penetration can be stopped shortly after having achieved the prescribed value. 5.1.2.8 In the case of tubeless tyres, means may be provided to ensure the retention of the inflation pressure f
39、or the duration of the test. 5.2 Bead unseating test 5.2.1 General This test applies to tubeless tyres only. 5.2.2 Preparation of tyre 5.2.2.1 Wash the tyre, dry it at the beads, and mount it without lubrication or adhesive on a clean, painted test rim. The rim contour shall be one of those specifie
40、d for the fitment of the test tyre. 5.2.2.2 Mount the tyre on a test rim and inflate it to the pressure specified in Table 1. 5.2.3 Test procedure 5.2.3.1 Mount the tyre and rim assembly on a fixture as shown in Figure 2. BS ISO 10191:2010ISO 10191:2010(E) 6 ISO 2010 All rights reservedDimensions in
41、 millimetres Key 1 pivot on centreline of beam 2 horizontal beam 3 to bottom of anvil Figure 2 Bead unseating fixture 5.2.3.2 Position the bead unseating block (4.3) against the tyre at a horizontal distance, P, as shown in Table 2. 5.2.3.3 Apply a force through the block to the tyre outer at a rate
42、 of (50 2,5) mm/min. 5.2.3.4 Increase the force until the bead block seats or until the prescribed value is reached. 5.2.3.5 Repeat the test at least four times at places approximately equally spaced around the tyre circumference. Table 2 Distance P from bead unseating block (see Figure 2) Dimension
43、s in millimetres Dimension P Nominal rim diameter code T type temporary use spare tyres All other tyres 10 216 12 241 13 254 14 267 15 279 16 292 17 305 18 318 19 330 290 229 315 241 340 254 365 267 390 279 415 292 BS ISO 10191:2010ISO 10191:2010(E) ISO 2010 All rights reserved 75.3 Endurance test 5
44、.3.1 Preparation of tyre 5.3.1.1 Mount the tyre on a test rim and inflate it to the pressure specified in Table 1. 5.3.1.2 Maintain the tyre and rim assembly at an ambient temperature of not less than 35 C for at least 3 h. 5.3.2 Test procedure 5.3.2.1 Readjust the tyre pressure to the value specifi
45、ed in Table 1 immediately before testing. 5.3.2.2 Mount the tyre and rim assembly on a test axle so that the tyre may be pressed radially against the outer face of test drum. 5.3.2.3 During the test the ambient temperature, at a distance of not less than 150 mm and not more than 1 m from the tyre, s
46、hall be at least 35 C. No provision shall be made for cooling the tyre during the test. 5.3.2.4 Conduct the test, without interruptions, at not less than 80 km/h test speed with loads and test periods not less than those shown in Table 3. 5.3.2.5 Throughout the test, the inflation pressure shall not
47、 be corrected and the test loads shall be kept constant at the value corresponding to each test period. Table 3 Test parameters for endurance Test period Duration min. Load as a percentage of tyre maximum load rating min. 1 4 h 85 % 2 6 h 90 % 3 24 h 100 % 5.4 High speed test 5.4.1 General For those
48、 tyres not marked with a service description, note should be taken of the additional test conditions given in Annex A. 5.4.2 Preparation of tyre 5.4.2.1 Mount the tyre on a test rim, inflate it to a pressure related to its speed symbol, tyre version and load type, as shown in Table 4. The tyre manuf
49、acturer may request, giving reasons, the use of a different test inflation pressure. In such a case, the tyre shall be inflated to that pressure. 5.4.2.2 Maintain the tyre and rim assembly at test room temperature for at least 3 h. BS ISO 10191:2010ISO 10191:2010(E) 8 ISO 2010 All rights reservedTable 4 Inflation pressures for high speed test Inflation pressure kPa Diagonal Radial and bias-belted Speed symbol 4PR 6PR 8PR Normal (standard) Reinforced (extra load) L, M, N 230 270
