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An Evaluation of Torque Bias and Efficiency of Torsen Differential
Technical Paper
2002-01-1046
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Since 1983 the Torsen® differential has been employed in the powertrain of more than two-dozen sedans, SUVs, and military vehicles. This differential device is renowned for its unique high torque bias capacity. Torque bias has long been recognized as a desirable drivetrain characteristic that enhances both a vehicle's drivability and stability. Since the generation of torque bias relies on friction, the know-how in achieving balanced design of torque bias and efficiency is crucial. Presented in this paper is an analytical evaluation of the performance of Torsen differential with respect to these parameters. The mathematical model provides effective guidance in design optimization. The performance predictions were found to correlate well with experimentally measured data. In an effort to explore the theory behind the Torsen differential design, the general subject of speed differentiation and torque bias generation is reviewed. In this discussion, the design and function of the friction-clutch-based limited slip differential, the Torsen differential, and the lockable differential are compared, differential devices.
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Authors
Citation
Shih, S. and Bowerman, W., "An Evaluation of Torque Bias and Efficiency of Torsen Differential," SAE Technical Paper 2002-01-1046, 2002, https://doi.org/10.4271/2002-01-1046.Also In
References
- Chocholek S. Ferbitz R. “Restrictive Differentials” SAE paper 720903
- Platteau R. Guidoni S. Sacchettini P. Jesson R. “Traction and Handling Safety Synergy of Combined Torsen Differential and Electronic Traction Control” ImechE 1995
- Chocholek S. “The Development of a Differential for the Improvement of Traction Control” ImechE 1988 75 82
- Shih S. “Study of the Gleasman Dual Drive Differential” ArvinMeritor August 1984