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R&D Journal
versão On-line ISSN 2309-8988
versão impressa ISSN 0257-9669
Resumo
STRACHAN, P. J.; REYNAUD, F. P. e VON BACKSTROM, T. W.. The hydrodynamic modelling of torque converters. R&D j. (Matieland, Online) [online]. 1992, vol.8, pp.21-28. ISSN 2309-8988.
One method of predicting the performance characteristics of torque converters is by means of a hydrodynamic model in which the geometry of the torque converter and the properties of the fluid are given, and the angular momentum flux over the members is calculated at specific operating points. A number of such models has been developed in the literature, all of which rely on empirical input data for determination of the losses and slip factor. This paper describes a hydrodynamic model in which the empiricism has been removed from the input data and built into the program in the form of empirical equations and loss models. The program can be applied to torque converters having profile and thin blades, and in addition a new shock (incidence) loss model is introduced which is employed in the hydrodynamic model to calculate the shock losses of the different members of a torque converter. Prediction of torque converter performance by means of this model agreed well with published experimental data for a wide range of torque converter geometries.
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