This paper presents input coupled split power transmissions, arrangements and comparisons between the single and dual stage designs. Selection of the shift point between stages is discussed. Mathematical models for the transmission are constructed. An algorithm is developed for an efficiency optimization routine. The effects of the gear material strength, gear module, gear tooth width, and shaft offset on the efficiency are determined. Power loss contributions are presented in conjunction with their effect on the overall transmission efficiency.
Issue Section:
Technical Papers
1.
Fussner, D., and Singh, Y., 2002, “Development of Single Stage Input Coupled Split Power Transmission Arrangements and their Characteristics,” SAE Paper 2002-01-1294.
2.
Fussner, D., and Singh, Y., 2002, “Development of Dual Stage Input Coupled Split Power Transmission Arrangements and their Characteristics,” SAE Paper 2002-01-0590.
3.
Vahabzadeh, H., Macay, J., and Dittrich, O., “A Split Torque, Geared-Neutral Infinitely Variable Transmission Mechanism, FISITA Paper 905089.
4.
Fussner, D., and Singh, Y., 2002, “Dual Stage Input Coupled Split Power Transmission Efficiency Optimization,” ASME Paper DETC2002/DAC-34057.
5.
Haupt, R., and Haupt, S., 1998, Practical Genetic Algorithms, John Wiley & Sons.
6.
Anderson, N., and Loewenthal, S., 1981, “Comparison of Spur Gear Efficiency Prediction Methods,” Advanced Power Transmission Technology, NASA.
7.
SKF, 1999, General Catalog, pgs 46–50.
8.
Machida, H., Itoh, H., and Imahishi, T., 1995, “Design Principle of High Power Traction Drive CVT,” SAE Paper 950675.
Copyright © 2004
by ASME
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