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SAE J1646 (MAR2012)

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Glossary of Terms - Lubricated Friction Systems

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This SAE Recommended Practice defines the principal terms and equations pertaining to automotive automatic transmission clutch plate, band, or other wet-friction systems. The terms apply directly to friction-system testing as is typically conducted on inertia-stop test equipment. Some terms can be directly applied to the analysis of friction in the transmission or brake assembly and other friction-test equipment. The glossary presents terms used to describe the set-up, testing, and results of tests as shown in Figure 1 , which were taken on a clutch SAE No. 2 machine. The glossary is intended to provide a collection of definitions in the hope of eliminating confusion in development and their application to passenger cars and trucks. This document focuses on the terminology of friction-system testing. References for this type of testing are shown in Section 2 .

SDO SAE: SAE International
Document Number J1646
Publication Date March 19, 2012
Language en - English
Page Count 20
Revision Level 201203
Supercedes
Committee
Publish Date Document Id Type View
March 19, 2012 J1646_201203 Revision
Aug. 25, 2006 J1646_200608 Revision
July 1, 1996 J1646_199607 Revision