This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Enumeration of Epicyclic-Type Automatic Transmission Gear Trains
Annotation ability available
Sector:
Language:
English
Abstract
An automotive transmission maintains a proper equilibrium between the power and torque produced by an engine and those demanded by the drive wheels. Most automatic, transmissions employ some kind of epicyclic gear mechanisms to achieve the above purpose. The first step in the design process of such a mechanism involves finding a configuration that provides a set of desired speed ratios, and meets other dynamic, and kinematic requirements. In this work, the kinematic structural characteristics of epicyclic gear mechanisms have been identified, and a methodology is formulated to systematically enumerate all possible configurations of such mechanisms. This is achieved by defining a canonical graph to represent the mechanisms. Graphs of mechanisms with up to ten links have been generated using this methodology.
Recommended Content
Technical Paper | Development of New Aisin Transmission for Medium Duty Truck and Bus |
Technical Paper | Hill Hold Moding |
Technical Paper | The Manual Transmission Automated - Gearshift Quality Comparison to a Similar Manual System |
Topic
Citation
Chatterjee, G. and Tsai, L., "Enumeration of Epicyclic-Type Automatic Transmission Gear Trains," SAE Technical Paper 941012, 1994, https://doi.org/10.4271/941012.Also In
References
- Ambedkar, A.G. Agrawal, V.P. 1987 “Canonical Numbering of Kinematic Chains and Isomorphism Problem: MIN Code,” Journal of Mechanism and Machine Theory 22 5 453 461
- Buchsbaum, F. Freudenstein, F. 1970 “Synthesis of Kinematic Structure of Geared Kinematic Chains and Other Mechanisms,” Journal of Mechanisms and Machine Theory 5 357 392
- Chatterjee, G. 1993 Enumeration and Automatic Sketching of Epicyclic Type Automatic Transmission Gear Trains University of Maryland College Park, Maryland
- Gott, P. G. 1991 Changing Gears Society of Automotive Engineeers, Inc. Warrendale, Pennsylvania
- Hayes-Roth, F. Waterman, D.A. Lenat, D.B. 1983 Building Expert Sustems Addison-Wesley, Reading Massachusetts
- Kim, J.T. Kwak, B.M. 1990 “Application of Edge Permutation Group to Structural Synthesis of Epicyclic Gear Trains,” Journal of Mechanisms and Machine Theory 25 5 563 574
- Larew, W. B. 1966 Automatic Transmissions Chilton Book Company Radnor, Pennsylvania
- Levai, Z. 1964 Theory of Epicyclic Gears and Epicyclic Change-Speed Gears Technical University of Building, Civil and Transportation Engineering Budapest
- Liu, C.T. Introduction to Combinatorial Mathematics Mcgraw-Hill New York
- Mruthyunjaya, T.S. Ravisankar, R. 1985 “Computerized Synthesis of the Structure of Geared Kinematic Chains,” Journal of Mechanisms and Machine Theory 20 367 387
- Olson, D.G. Erdman, A.G. Riley, D.R. 1991 “Toplogical Analysis of Single-Degree-of-Freedom Planetary Gear Trains,” ASME Journal of Mechanical Design 113 10 16
- Tang, C.S. Liu, T. 1993 “Degree Code - A New Mechanisms Identifier,” ASME Journal of Mechanical Design 115 627 630
- Tsai, L.W. 1988 “The Kinematics of Spatial Robotic Bevel-Gear Trains,” IEEE Journal of Robotics and Automation 4 150 156
- Tsai, L.W. Maki, E.R. Liu, T. Kapil, N.G. 1988 “The Categorization of Planetary Gear Trains for Automatic Transmissions According to Kinematic Topology,” SAE Technical Paper # 885602 , Proceeding of the XXII FISTA Congress and Exposition 1 1513 1512
- Tsai, L.W. Lin, C.C. 1989 “The Creation of Non-Fractionated Two-Degree-of-Freedom Epicyclic Gear Trains,” ASME J. of Mechanisms, Transmissions, and Automation in Design 111 524 529
- Yan, H.S. Hwang, Y.W. 1991 “The Specialization of Mechanisms,” Mechanisms and Machine Theory 26 541 551