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Study on 3-D Molding Method for Blades of Torque Converters
Technical Paper
2006-05-0181
Sector:
Language:
English
Abstract
The hydraulic torque converter is an important component for AT
or CVT transmission, in which energy is transformed between fluid
energy and mechanical energy. The transformation is implemented
through the interaction of blade wheels. Therefore, the blade's
geometry shape has a great effect on the performances of the
hydraulic torque converter. Some traditional design methods have
been used in the past years, but these methods mainly depend on
designers' experience, which results in a design process with
tediousness and low-efficiency.
A three-dimension design method suitable to CAE/CAM is proposed
in this paper and a design flow chart is provided. Different pumps,
turbines and stators designed by varied parameters law are compared
and analyzed. Based on the analysis, laws are developed and
summarized about how blade angle affects the performance of the
hydraulic torque converter. Blade design and the corresponding
computation of torque converter performance are implemented by 3-D
CAD/CFD technology. In addition, the experiment on the torque
converter performance used as the baseline for comparison ensures
the reliability of the conclusion. The three-dimension design
method reduces the dependence on experiences. Simultaneously, its
result provides a basic guidance for designing a new blade
considering blade angle factor.