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Dynamic Analysis of Transmission Torque Utilizing the Lever Analogy
Technical Paper
2009-01-1137
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
This paper presents methods for analyzing and visualizing the relationship between input torque, clutch torque, output torque and input acceleration during the inertia phase of a shift. The methods presented are an expansion of the lever analogy [1]. The methods are useful for understanding how geartrain inertia affects control, both its magnitude and distribution. Clutch energy and shift speeds are also easy to calculate and understand using the tools presented. Lastly the methods show why the optimum control strategies for various transmission configurations (such as DCT's, planetary transmissions, etc.) are different in the inertia phase.
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Citation
Hall, M. and Dourra, H., "Dynamic Analysis of Transmission Torque Utilizing the Lever Analogy," SAE Technical Paper 2009-01-1137, 2009, https://doi.org/10.4271/2009-01-1137.Also In
References
- SAE Paper 810102 “The Lever Analogy: A New Tool in Transmission Analysis” Howard L. Benford Maurice B. Leising
- SAE Paper 2007-01-1310 “Development of Smooth Up-Shift Control Technology for Automatic Transmissions with Integrated Control of Engine and Automatic Transmission” Takaaki Tokura Tomohiro Asami Yoshio Hasegawa Toshio Sugimura Katsumi Kono Kenji Aoki