An infinitely variable transmission (IVT), based on the use of one-way action clutches, belonging to the family of ratcheting drives is described. The mechanical foundations and numerical simulations carried out along this research envisage a plausible approach to its use as gear-box in general mechanical industry and its prospective use in automobiles and self-propelled vehicles. The system includes one-way clutches—free wheels or overrunning clutches—and two epicyclic gear systems. The output velocity, with oscillatory character, common to the ratcheting drives systems, presents a period similar to that produced by alternative combustion motors, making this transmission compatible with automobile applications. The variation of the transmission is linear in all the working range. The kinematics operating principles behind this IVT is described followed by a numerical simulation of the dynamic analysis. A prototype has been constructed and tested to assess its mechanical efficiency for different reduction ratios. The efficiency values predicted by theory agree with those experimentally obtained on a bench-rig testing equipment.
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July 2004
Technical Papers
Infinitely Variable Transmission of Racheting Drive Type Based on One-Way Clutches
F. G. Benitez,
e-mail: benitez@esi.us.es
F. G. Benitez
Transportation Engineering, School of Engineering, University of Sevilla, Camino de los Descubrimientos, Sevilla-41092, Spain
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J. M. Madrigal,
J. M. Madrigal
Transportation Engineering, School of Engineering, University of Sevilla, Camino de los Descubrimientos, Sevilla-41092, Spain
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J. M. del Castillo
J. M. del Castillo
School of Engineering, University of Extremadura, Avda. De Elvas, Badajoz-06071, Spain
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F. G. Benitez
Transportation Engineering, School of Engineering, University of Sevilla, Camino de los Descubrimientos, Sevilla-41092, Spain
e-mail: benitez@esi.us.es
J. M. Madrigal
Transportation Engineering, School of Engineering, University of Sevilla, Camino de los Descubrimientos, Sevilla-41092, Spain
J. M. del Castillo
School of Engineering, University of Extremadura, Avda. De Elvas, Badajoz-06071, Spain
Contributed by Mechanisms and Robotics Committee for publication in the JOURNAL OF MECHANICAL DESIGN. Manuscript received July 2003; revised January 2004. Associated Editor: G. K. Ananthasuresh.
J. Mech. Des. Jul 2004, 126(4): 673-682 (10 pages)
Published Online: August 12, 2004
Article history
Received:
July 1, 2003
Revised:
January 1, 2004
Online:
August 12, 2004
Citation
Benitez, F. G., Madrigal, J. M., and del Castillo, J. M. (August 12, 2004). "Infinitely Variable Transmission of Racheting Drive Type Based on One-Way Clutches ." ASME. J. Mech. Des. July 2004; 126(4): 673–682. https://doi.org/10.1115/1.1758258
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