A generalized formulation for analyzing speeds and forces of the gear components of planetary automatic transmissions is proposed. The formulation is capable of analyzing any typical one-degree-of-freedom automatic transmission gear train containing any number of simple, compound or complex-compound planetary gear sets. The formulation consists of three components: a kinematic analysis formulation to compute rotational speeds of gears and carriers, a gear ratio and kinematic configuration search algorithm, and a power flow analysis formulation. The kinematics component computes rotational speeds of gears and carriers. Given the type and number of planetary gear sets, the search algorithm determines all possible kinematic configurations and gear tooth count combinations that result in a required set of gear ratios while eliminating all kinematic redundancies and unfavorable clutching sequences. The third component, the power-flow analysis formulation, performs a complete static force (power-flow) analysis to determine all gear and bearing forces and moments, and clutch and connection torque values. A five-speed transmission example is considered to highlight the capabilities of the proposed formulation.
Skip Nav Destination
e-mail: kahraman.1@osu.edu
Article navigation
November 2004
Technical Papers
A Kinematics and Power Flow Analysis Methodology for Automatic Transmission Planetary Gear Trains
A. Kahraman,
e-mail: kahraman.1@osu.edu
A. Kahraman
Department of Mechanical Engineering, The Ohio State University, 206 W. 18th Avenue, Columbus, OH 43210
Search for other works by this author on:
H. Ligata,
H. Ligata
Department of Mechanical Engineering, The Ohio State University, 206 W. 18th Avenue, Columbus, OH 43210
Search for other works by this author on:
K. Kienzle,
K. Kienzle
General Motors Gear Center, 30240 Oak Creek Drive, Wixom, MI 48393
Search for other works by this author on:
D. M. Zini
D. M. Zini
General Motors Gear Center, 30240 Oak Creek Drive, Wixom, MI 48393
Search for other works by this author on:
A. Kahraman
Department of Mechanical Engineering, The Ohio State University, 206 W. 18th Avenue, Columbus, OH 43210
e-mail: kahraman.1@osu.edu
H. Ligata
Department of Mechanical Engineering, The Ohio State University, 206 W. 18th Avenue, Columbus, OH 43210
K. Kienzle
General Motors Gear Center, 30240 Oak Creek Drive, Wixom, MI 48393
D. M. Zini
General Motors Gear Center, 30240 Oak Creek Drive, Wixom, MI 48393
Contributed by the Mechanisms and Robotics Committee for publication in the JOURNAL OF MECHANICAL DESIGN. Manuscript received April 2, 2003; revised April 1, 2004. Associate Editor: J. M. McCarthy.
J. Mech. Des. Nov 2004, 126(6): 1071-1081 (11 pages)
Published Online: February 14, 2005
Article history
Received:
April 2, 2003
Revised:
April 1, 2004
Online:
February 14, 2005
Citation
Kahraman, A., Ligata, H., Kienzle , K., and Zini, D. M. (February 14, 2005). "A Kinematics and Power Flow Analysis Methodology for Automatic Transmission Planetary Gear Trains ." ASME. J. Mech. Des. November 2004; 126(6): 1071–1081. https://doi.org/10.1115/1.1814388
Download citation file:
Get Email Alerts
DeepJEB: 3D Deep Learning-Based Synthetic Jet Engine Bracket Dataset
J. Mech. Des (April 2025)
Design and Justice: A Scoping Review in Engineering Design
J. Mech. Des (May 2025)
Related Articles
A Numerical Approach to Calculation of Load Sharing in Planetary Gear Drives
J. Mech. Des (January,2010)
An Approach to Power-Flow and Static Force Analysis in Multi-Input Multi-Output Epicyclic-Type Transmission Trains
J. Mech. Des (January,2010)
Simplified Kinematic Analysis of Bevel Epicyclic Gear Trains With Application to Power-Flow and Efficiency Analyses
J. Mech. Des (March,2005)
Flexible Multibody Dynamic Modeling of a Horizontal Wind Turbine Drivetrain System
J. Mech. Des (November,2009)
Related Proceedings Papers
Related Chapters
Feedback-Aided Minimum Joint Motion
Robot Manipulator Redundancy Resolution
Materials
Design and Application of the Worm Gear
Backlash
Design and Application of the Worm Gear