SAE J2487 pdf download

SAE J2487 pdf download.SAE No. 2 Friction Test Machine 3600 r/min Stepped Power Test.
Scope—This SAE Recommended Practice is intended as the definition of a standard test, but may be subject to frequent change to keep pace with experience and technical advances. T1’Hs should be kept in mind when considering its use.
The SAE No, 2 Friction Test Machine is used to evaluate the friction charactenstics of automatic transmission plate clutches with automotive transmlsson fluids, It can also be used to conduct durability tests on wet friction systems.
The specific purpose of this document is to define a 3600 rimm Stepped Power Test for the evaluation of wet friction system performance vaflation as a function of power level. This procedure uses an initial engagement speed of 3600 r/min and is intended as a standard procedure for common use by both suppliers and end users.
The only variables selected by the supplier or user ot the friction system are.
a. Friction Material
b. Fluid
c. Reaction Ptates
These three variables must be clearly Identified when reporting the results of using this test If any of the test parameters or system hardware as described in this document are changed. other than the friction material. test fluid, or reaction plates, the data may not be reported as having been obtaried using this document.
This procedure is not .itended to evaluate the initial coefficient or break-in characteristics. For this information, refer to SAE J2490 SAE No. 2 Friction Test Machine PVT Test.
Z References
2.1 Applicable Publications—The following publications form a part of this specification to the extent specified herein. Unless otherwise iidicated. the latest version of SAE publications shall apply.
2.1.1 SAE PUSUCAT1ONS—Avaitable from SAE, 400 Commonwealth Drive, Warrendale, PA 15096-0001.
SAE .J286—SAE No.2 ClUtch Friction Test Machine Guidelines
SAE J1646.—.Glossary of Terms-Lubricated Friction Systems
SAE J2490—SAE No. 2 Friction Test Machine fLPVT Test
2.2 Related Publications—The folowing publications are for information purposes only and are not a required part of this specification.
2.2.1 SAE PUBuCATIONS—Available from SAE, 400 Commonwealth Drive, Werrendale PA 15096-0001
SAE J1499—SAE Band Friction Test Machine (SAE) Test Machine Guidelines
SAE Paper 870051—New Fixture for Testing Friction Materials for Automatic Transmission Clutch
SAE J2488— SAE No. 2 Friction Test Machine 6000 rlmin Stepped Power Test
SAE J2489—SAE No. 2 Friction Test Machine Durability Test
2.22 FORD Moton COMPANY PuJCATION—Available from Ford Motor Company. FSATF Committee, 35500 Plymouth Road, Box 215, Llvonla, Ml 48150.
Ford MERCON® V Specification
2.2.3 GEiR.’i. MOTOR PuOuCATION—Available from GM Research & Development Center. General Motors Corporation, Technology Licensing, 30500 Mound Road, M/C 480-106.160. Warren MI 48090-9055
GM DEXRON.lll Speaficahon, GM641TM
2.2.4 DASILER CHRYSLER PuBLIcATIoN—Available from Daireler Chrysler Corporation, Engmeenng Standards Group, 800 Chrysler Drive East, Auburn Hills Ml 48326-2757.
Daimler Chrysler Specification MS9602
3. Test Equipment
3.1 SAE No, 2 Fnction Test Machine with breakaway accessory
3.2 Flywheels to deliver desired kinetic energy. The flywheels required to provide the specified step changes in total system inertia are shown In Tables 1A and 18.
3.3 Data Acquisition—Al not less than 1000 samples per second and storage system with at least four channels with response as follows:
a. Torque Channel, Bandwidth – 500 Hz.
b Apply Pressure Channel, Bandwidth – 500 Hz.
c. Speed Channel. Bandwidth – 500 Hz.
d. Test Fluid Ten,erature Channel. Bandwidth -3 Hz
(M channels are to be calibrated to maintain ±2% accuracy throughout the range of 10% of full scale to full scale).
3.4 InstrumentatIon
a. Torque Transducer—Full bridge, strain gage type, with combined nonlinearity arid hysteresis effects not to exceed 0.5% of fijI scale, such as Lebow Load Call, Model 3397.
b Apply Pressure Transducer—Full bridge, strain gage type, with combined nonlinearity and hysteresis effects not to exceed 0.5% of full scale, such as Sensotech, Model TJU7OB-12.
c. Speed Transducer—Optical Encoder for drive motor, such as BEI Model 924-01002-4839.
d. Thermocouple(s)—Type J wyth high-impedance amplifier and cold junction compensator.