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Next Generation Torque Control Fluid Technology, Part IV: Using a New Split-μ Simulation Test for Optimizing Friction Material-Lubricant Hardware Systems
ISSN: 0148-7191, e-ISSN: 2688-3627
Published October 25, 2010 by SAE International in United States
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Wet clutch friction devices are the primary means by which torque is transmitted through many of today's modern vehicle drivelines. These devices are used in automatic transmissions, torque vectoring devices, active on-demand vehicle stability systems and torque biasing differentials. As discussed in a previous SAE paper ( 2006-01-3271 - Next Generation Torque Control Fluid Technology, Part II: Split-Mu Screen Test Development) a testing tool was developed to correlate to full-vehicle split-mu testing for limited slip differential applications using a low speed SAE #2 friction test rig. The SAE #2 Split-Mu Simulation is a full clutch pack component level friction test. The purpose of this test is to allow optimization of the friction material-lubricant hardware system in order to deliver consistent friction performance over the life of the vehicle. In this paper we will describe the development of a new test based on the previous work including equipment modifications, data analysis and correlation to full-vehicle split-mu testing. This new tool allows the validation of new friction modifiers tailored to OEM-specific friction materials.
- David Whitticar - The Lubrizol Corporation
- Shubhamita Basu - The Lubrizol Corporation
- Galen Greene - The Lubrizol Corporation
- Matthew Henley - The Lubrizol Corporation
- Dwight Parham - The Lubrizol Corporation
- Christopher Prengaman - The Lubrizol Corporation
- Elizabeth Schiferl - The Lubrizol Corporation
- Mark Baker - The Lubrizol Corporation
- Stuart Bartley - The Lubrizol Corporation
- Michael E. Huston - The Lubrizol Corporation
CitationWhitticar, D., Basu, S., Greene, G., Henley, M. et al., "Next Generation Torque Control Fluid Technology, Part IV: Using a New Split-μ Simulation Test for Optimizing Friction Material-Lubricant Hardware Systems," SAE Technical Paper 2010-01-2230, 2010, https://doi.org/10.4271/2010-01-2230.
- Schenkenberger, C. Schiferl, E. Garling, G. Baker, M. et al. “Next Generation Torque Control Fluid Technology, Part II: Split-Mu Screen Test Development,” SAE Technical Paper 2006-01-3271 2006 10.4271/2006-01-3271
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- Henley, M. Basu, S. Schiferl, E. Whitticar, D. et al. “Next Generation Torque Control Fluid Technology, Part III: Using an Improved Break-Away Friction Screen Test to Investigate Fundamental Friction Material-Lubricant Interactions,” SAE Technical Paper 2010-01-2231 2010 10.4271/2010-01-2231