Actas de congresos
Tepiciclo - A Software To Help The Planetary Gear Trains Design
Sae Technical Papers. , v. , n. , p. - , 2003.
In this paper a review about epicyclic gear trains (EGTs) or planetary gear trains (PGTs) is initially presented. These gear trains are transmission systems of high kinematic complexity and difficult visualization. However, their advantages are many: they are compact, light, allow high speed reductions, possess high reliability because they have constant engagement, possess bifurcating capacity and power addition, and allow multiple transmission ratio. One of their main applications is the automatic transmission or power trains of passenger cars and other modern vehicles e.g. trucks, buses, etc. Then, some classic automatic transmission boxes e.g. Simpson, GM Hydra Matic 440 PGT, Ravigneaux, etc. and the TEPiciclo software are shown. This software was created to help in design development for automatic transmission of light vehicles with two simple PGTs linked. It assists the designer in the selection of assembly, positioning and teeth number of gears providing the possible transmission ratio and the torque flow in the selected system. In 2000 the ZF Group started producing the "world's first" 6-speed automatic transmission (ZF 6PH26) for passenger cars. It uses a Ravigneaux and a simple PGT linked. The versatility of TEPiciclo software was shown when searching an alternative gear box able to produce gear ratios close to ZF 6HP26's ones. Copyright © 2003 SAE International.(1980), p. 440. , PIRES E ALBUQUERQUE, OAL, Elementos de Máquinas (In Portuguese), Editora Guanabara Dois S.A. Rio de Janeiro - RJ, BrazilHsieh, H.-I., (1997) Enumeration and Selection of Clutching Sequences Associate with Epicyclic-Type Transmission Mechanisms, p. 212. , Ph.D. ThesisMolian, S., Kinematics of Compound Differential Mechanisms (1970) The Instituition of Mechanica Engineers, Proceedings 185, pp. 733-739Lévai, Z., Contribution to the Systematics of Change-Speed-Gearbox of Planetary Type (1973) Acta Technica Academiae Scientiarum Hungaricae, 75 (14), pp. 291-299. , tomusDedini, F.G., (1985) Projeto e Otimização de Uma Transmissão Planetária Por Rolos de Tração (In Portuguese), p. 150. , M.Sc. Thesis, UNICAMPOzeki, T., Umeyama, M., Development of Toyota's Transaxle for Mini-Van Hybrid Vehicles (2002) Transmission and Driveline Systems Symposium 2002, SP-1655, SAE Paper 2002-01-0931, pp. 179-186Wakmatsu, H., Honda's 5 Speed All Clutch to Clutch Automatic Transmission (2002) Transmission and Driveline Systems Symposium 2002, SP-1655, SAE Paper 2002-01-0931, pp. 187-194Wagner, G., (2001) Transmission Options, pp. 64-70. , Automotive Engineering International. July, 2001Birch, S., (2001) BMW Re-engineers the 7-Series, pp. 70-73. , Automotive Engineering International. October, 2001(1996) Automotive Handbook, p. 892. , BOSCH, SAE Society Automotive Engineers, 4th EdSanger, D.J., Syntesis of Multiple-Speed Transmissions of the Planetary - Gear Type (1972) Journal of Mechanical Engineering Science, 14, pp. 93-101Holmes, R., (1977) The Characteristics of Mechanical Engineering Systems, p. 157. , Pergamon PressMogalapalli, S.N., (1992) Optimization of Gear Ratios for Epicyclic Gear Train Transmission, p. 85. , M.Sc. ThesisBenford, H.L., Leising, M.B., (1982) The Lever Analogy: A New Tool in Transmission Analysis, pp. 429-437. , Society of Automotive Engineering, IncHsu, C.H., Synthesis of Kinematic Structure of Planetary Gear Trains by Admissible Graph Method (1993) Journal of Franklin Institute, 330 (5), pp. 913-927. , n°. SeptemberShigley, J.E., Mischke, C.R., (1989) Mechanichal Engineering Design, p. 779. , 5th Edição, Ed. McGraw-Hill, IncAmaral, D., (2000), p. 180. , Metodologia, Sistematização e Projeto de Transmissões Epicicloidais com Um e Dois TEPs Ligados (In Portuguese). Ph.D. Thesis - FEM, Unicamp, Campinas - SP, BrazilAmaral, D., Becker, M., Dedini, F.G., TEPiciclo - Software para o estudo cinemático de trens epicicloidais (2001) SAE Paper 2001-01-3950-P, p. 12. , (In Portuguese), BrazilGillespie, T.D., (1992) Fundamental of Vehicle Dynamics, p. 495. , ISBN 1-56091-199-9