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    SAE J 1633-2000 Laboratory Speed Test Procedure for Light Truck Tires《轻型卡车轮胎的实验室速度试验规程》.pdf

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    SAE J 1633-2000 Laboratory Speed Test Procedure for Light Truck Tires《轻型卡车轮胎的实验室速度试验规程》.pdf

    1、SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirelyvoluntary, and its applicability and suitability for any particular use, including any patent infringement arising therefro

    2、m, is the sole responsibility of the user.”SAE reviews each technical report at least every five years at which time it may be reaffirmed, revised, or cancelled. SAE invites your written comments and suggestions.TO PLACE A DOCUMENT ORDER; (724) 776-4970 FAX: (724) 776-0790SAE WEB ADDRESS http:/www.s

    3、ae.orgCopyright 2000 Society of Automotive Engineers, Inc.All rights reserved. Printed in U.S.A.SURFACEVEHICLE400 Commonwealth Drive, Warrendale, PA 15096-0001RECOMMENDEDPRACTICESubmitted for recognition as an American National StandardJ1633REAF.SEP2000Issued 1995-11Reaffirmed 2000-09Superseding J16

    4、33 NOV1995Laboratory Speed Test Procedure for Light Truck Tires1. ScopeThis SAE Recommended Practice provides a method for testing the speed performance of light trucktires under controlled conditions in the laboratory on a test wheel.2. ReferencesThere are no referenced publications specified herei

    5、n.3. Definitions3.1 Ambient TemperatureThis is the temperature of the air measured during a high-speed test at a fixedlocation near the tire. The fixed location of ambient temperature measurement is defined as a point on therotational axis of the tire, 0.31 m (12 in) from the plane touching the near

    6、est tire sidewall (or a point where anequivalent temperature exists).3.2 Capped Inflation PressureThe process of inflating the tire to a specified pressure and allowing the inflationpressure to build up, as the tire temperature increases during the test procedure.3.3 Maximum LoadThe maximum load (Po

    7、und load, Kilogram load, or Load index) that is molded on the tiresidewall, or if not molded, shown in the publication of a recognized tire standardizing body.3.4 Load IndexA numerical code associated with the maximum load a tire can carry at the speed indicated byits Speed Symbol under specified se

    8、rvice conditions.3.5 Service DescriptionA service designation, which is distinct from the size designation, consisting of theLoad Index (Single load/Dual load, where applicable) and Speed Symbol.3.6 Speed CategoryA category assigned to a tire which denotes the maximum speed for which the use of thet

    9、ire is rated.COPYRIGHT Society of Automotive Engineers, Inc.Licensed by Information Handling ServicesSAE J1633 Reaffirmed SEP2000-2-3.7 Speed SymbolA symbol indicating the speed category at which the tire can carry a load corresponding to itsLoad Index under specified service conditions (see Table 1

    10、).3.8 ChunkingThe breaking away of pieces of the tread or sidewall.3.9 Cord SeparationThe parting of cords from adjacent rubber compounds.3.10 CrackingThe parting within the tread, sidewall, or inner liner of the tire extending to cord material.3.11 Innerliner SeparationThe parting of the innerliner

    11、 from cord material in the carcass.3.12 Tread SeparationThe pulling away of the tread from the carcass.3.13 Sidewall SeparationThe parting of the rubber compound from the cord material in the sidewall.3.14 Ply SeparationThe parting of the rubber compound between adjacent plies.3.15 Bead SeparationA

    12、breakdown of the bond between components in the bead area.4. Test Equipment4.1 Test Wheel Specifications4.1.1 DIAMETERThe diameter of the Standard test wheel used for the high-speed test is 1.708 m (67.23 in). Anoptional test wheel of 2.0 m (78.74 in) diameter may also be used.4.1.2 WIDTH OF THE TES

    13、T SURFACEThis must exceed the tread width of the test tire.4.1.3 OUTER SURFACESmooth steel.4.2 Test RimIt must have a contour and width as shown in the publication of a recognized standardizing bodyfor the tire size to be tested.4.3 Control AccuracyOperating conditions must be maintained within the

    14、following accuracies:a. Test Load: 1%b. Speed: +2, 0 km/h (+1, 0 mph)TABLE 1SPEED SYMBOLSpeed Symbol Speed CategoryN 140 km/h ( 87 mph)P 150 km/h ( 93 mph)Q 160 km/h ( 99 mph)R 170 km/h (106 mph)S 180 km/h (112 mph)T 190 km/h (118 mph)H 210 km/h (130 mph)COPYRIGHT Society of Automotive Engineers, In

    15、c.Licensed by Information Handling ServicesSAE J1633 Reaffirmed SEP2000-3-4.4 Instrumentation Accuracya. Test Load: 20 N (5 lbf)b. Inflation Pressure: 4 kPa (0.5 psi)c. Temperature: 0.5 C (1 F)d. Speed: 0.5 km/h (0.3 mph)5. Test Conditions5.1 Loada. 90% of the Maximum Single Tire LoadFor 1.7 m Diame

    16、ter Test Wheelb. 92% of the Maximum Single Tire LoadFor 2.0 m Diameter Test Wheel5.2 Inflation Pressure (Capped)100% of the Inflation pressure corresponding to the maximum load. Tolerancefor setting initial inflation pressure: 7 kPa (1 psi).5.3 Ambient Temperature38 C 3 C (100 F 5 F)5.4 Camber Angle

    17、0 degrees 0.3 degrees5.5 Slip Angle0 degrees 0.3 degrees6. Test Procedure6.1 Thermal ConditioningCondition the tire/wheel assembly at test room temperature for not less than 3 h.Readjust the inflation pressure to that specified in 5.2.6.2 OperationThe tire and wheel assembly shall be mounted on the

    18、test axle and pressed normal to the outerface of the test wheel with the test load. Carry the test through, without interruption, as follows.a. Time taken to pass from zero speed to the initial test speed10 minb. Initial test speed is the prescribed maximum speed (speed category) of the tire less 20

    19、 km/h (12 mph)c. Duration at Initial Test Speed10 mind. Successive Speed Increments10 km/h (6 mph)e. Duration at Second Speed Step10 minf. Duration at the Speed Category Step30 ming. Duration of Optional Successive Speed Steps30 min6.3 Test RecordsThe following information should be recorded for eac

    20、h tire:6.3.1 TIRE IDENTIFICATIONa. Manufacturerb. Brand or Trade Namec. Tire Size Designationd. Tire Maximum Loade. Service Description (If the tire has service description designation)f. Speed Category (If the tire has a speed category designation)g. Tire pressure corresponding to the maximum loadh

    21、. Serial Number (Identification Number)i. Other pertinent informationCOPYRIGHT Society of Automotive Engineers, Inc.Licensed by Information Handling ServicesSAE J1633 Reaffirmed SEP2000-4-6.3.2 TEST WHEEL IDENTIFICATIONa. Test Wheel Diameterb. Other Pertinent Information6.3.3 TEST CONDITIONSa. Date

    22、and Timeb. Rim Diameter, Width and Contourc. Test Loadd. Test Inflatione. Ambient Temperaturef. Other Pertinent Information6.3.4 TEST DATAa. Initial Test Speedb. Subsequent Completed Speed StepsSpeed and Durationc. Duration and Speed of Final Stepd. Tire Removal Condition after Final Step7. Terminat

    23、ion of Test and Data Evaluation7.1 The test may be considered terminated by one of the following:a. Completion of predetermined final stepb. Tire structural degradation7.2 Upon visual inspection of the dismounted tire, any visible evidence of the following constitutes tire structuraldegradation:a. T

    24、read Separationb. Cord Separationc. Ply Separationd. Bead Separatione. Sidewall Separationf. Chunkingg. Innerliner Separationh. CrackingPREPARED BY THE SAE HIGHWAY TIRE FORUM COMMITTEECOPYRIGHT Society of Automotive Engineers, Inc.Licensed by Information Handling ServicesSAE J1633 Reaffirmed SEP2000

    25、RationaleNot applicable.Relationship of SAE Standard to ISO StandardNot applicable.ApplicationThis SAE Recommended Practice provides a method for testing the speed performance of lighttruck tires under controlled conditions in the laboratory on a test wheel.Reference SectionThere are no referenced publications specified herein.Developed by the SAE Highway Tire Forum CommitteeCOPYRIGHT Society of Automotive Engineers, Inc.Licensed by Information Handling Services


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