Wet Friction Testing
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  • A test procedure developed at Greening precisely evaluates shudder properties of Automatic Transmission Fluid (ATF) for continuous slip torque converters.


  • Tests run on a modified SAE No. 2 machine simulate sliding speed, surface pressures, fluid temperatures, and interfacial fluid flow found in actual vehicles.


  • This test has been approved to be part of Ford's MERCON® Qualification Program. Our pioneering contribution is acknowledged in SAE paper 940821.


  • We can characterize the effect of continuously varying interfacial speed on the friction behavior of a fluid clutch system.