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Optimal Operation and Control of a Hydrostatic CVT Powertrain
Technical Paper
2005-01-1467
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
This paper details the optimal operation of a hydrostatic continuously variable transmission (CVT) for fuel economy and driving performance. The best overall system performance curves have been identified including a large variation in performance of a powertrain and an engine. These curves are a three-dimensional function of the engine torque, engine speed and the CVT ratio. Including the CVT efficiency in the system adds in another constrain in control scheme for optimal operation. For cruising at a given speed for each constant power requirement, the engine and the powertrain operating points can be found. The system operations for acceleration in fuel economy and performance mode are also discussed. Finally, the controller designs for both cases are presented.
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Citation
Kanphet, P., Jirawattana, P., and Direcksataporn, B., "Optimal Operation and Control of a Hydrostatic CVT Powertrain," SAE Technical Paper 2005-01-1467, 2005, https://doi.org/10.4271/2005-01-1467.Also In
SAE 2005 Transactions Journal of Passenger Cars: Mechanical Systems
Number: V114-6 ; Published: 2006-02-01
Number: V114-6 ; Published: 2006-02-01
Number:SP-1983CD; Published:2005-04-11
References
- Fronczak, F.J. and Beachley, N.H.,“An Integrated Hydraulic Drive Train System for Automobiles”, Proceedings, 8th International Symposium on Fluid Power, Birmingham, England, April 19-21, 1988
- Pfiffner, R., “Optimal Operation of CVT Based Powertrains”, Dissertation No. 14136, Swiss Federal Institute of Technology, Zurich, Switzerland, 2001.
- Vroemen, B.G., Serrarens, F.A. and Veldpaus, F.E., “CVT Control: A Hierarchical Approach”, Proceeding of AVEC 2000, 5th International Symposium on Advanced Vehicle Control, Ann Arbor, Michigan, August 22-24, 2000.
- Beachley, N.H. and Frank, A.A., “Principles and Definitions for Continuously Variable Transmissions, with Emphasis on Automotive Application”, Proceeding of the Century 2 International Power Transmissions & Gearing Conference, ASME 80-C2/DEET-95, San Francisco, CA, 1980.
- Vahabzadeh, H. and Linzell, S.M., “Modeling, Simulation, and Control Implementation fir a Split-Torque, Geared Neutral, Infinitely Variable Transmission, SAE Paper No. 910409, 1991.
- Watton, J., “Fluid Power Systems: Modeling, Simulation, Analog and Microcomputer Control”, Prentice-Hall, Englewood Cliffs, NJ, 1989.
- Beachley, N.H., “Fluid Power Class Notes”, University of Wisconsin at Madison, 1985.
- Moskwa, J.J., and Hedrick, J.K., “Automotive Engine Modeling for Real Time Control Application”, Proceeding of American Control Conference”, Pages 341-346, 1987.