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SAE No. 2 Friction Test Machine 6000 rpm Stepped Power Test
- Ground Vehicle Standard
- J2488_201907
- Revised
Downloadable datasets available
Annotation ability available
Sector:
Issuing Committee:
Language:
English
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. This should be kept in mind when considering its use.
The SAE No. 2 Friction Test Machine is used to evaluate the friction characteristics of automatic transmission plate clutches with automotive transmission fluids. It can also be used to conduct durability tests on wet friction systems.
The specific purpose of this document is to define a 6000 rpm stepped power test for the evaluation of wet friction system performance variation as a function of power level. This procedure uses an initial engagement speed of 6000 rpm 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 of the friction system are:
-
a
Friction material
-
b
Fluid
-
c
Reaction plates
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 obtained using this document.
This procedure is not intended to evaluate the initial coefficient or break-in characteristics. For this information, refer to SAE J2490 SAE No. 2 Friction Test Machine μPVT test.
Rationale
Adjusted the separator plate thickness range.
Recommended Content
| Ground Vehicle Standard | SAE No. 2 Friction Test Machine Durability Test |
| Ground Vehicle Standard | SAE No. 2 Friction Test Machine 3600 rpm Stepped Power Test |
| Ground Vehicle Standard | SAE No. 2 Friction Test Machine μPVT Test |
Data Sets - Support Documents
| Title | Description | Download |
|---|---|---|
| [Unnamed Dataset 1] | ||
| [Unnamed Dataset 2] | ||
| Table 1A | Required inertia 6000 rpm initial speed | |
| Table 1B | Possible flywheels required for the test | |
| Table A1 | Test components and assembly layout |
Issuing Committee
Automatic Transmission and Transaxle Committee
The Automatic Transmission and Transaxle Standards Committee reports to the Powertrain Systems Group of the Motor Vehicle Council. The Committee is responsible for developing and maintaining SAE Standards, Recommended Practices, and Information Reports related to all systems, subsystems, and components of automatic transmissions, including both step ration and CVT designs. This committee will direct its attention to passenger cars and light trucks. Participants in the SAE Automatic Transmission Transaxle Standards Committee include OEMs, suppliers, consulting firms, government, and other interested parties.
Reference
| Number | Title |
|---|---|
| 670051 | Putting Automatic Transmission Clutch Friction Researchers on Speaking Terms |
| J1499_201203 | SAE Band Friction Test Machine Guidelines |
| J1646_201203 | Glossary of Terms - Lubricated Friction Systems |
| J2487_201905 | SAE No. 2 Friction Test Machine 3600 rpm Stepped Power Test |
| J2489_201203 | SAE No. 2 Friction Test Machine Durability Test |
| J2490_201905 | SAE No. 2 Friction Test Machine μPVT Test |
| J286_201203 | SAE No. 2 Clutch Friction Test Machine Guidelines |
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