2012
IMAACA 2012 Proceeding
Dynamics of torque converter with lock-up clutch
Authors: Takeshi Yamaguchi, Kazuhiro Tanaka, Katsuya Suzuki
Abstract
The performance of a torque converter (T/C) has been one of important improvement for an automatic transmission equipped automobile. Improving its performance and efficiency is a key factor to saving fuel consumption. Moreover, the locking up operation or slipping control of an automatic transmission, which makes T/C efficiency higher, is another good opportunity for improving fuel economy. One- dimensional modeling of systems remains effective to recognize a mechanism of the system dynamics. Some bondgraphs models of T/C have been proposed and it becomes more effective for drivability and efficiency to make and add a model for dynamics of the lock-up clutch (L/C). A bondgraphs model of the L/C and a method of calculating parameters through CFD numerical analysis in the components inside T/C are proposed in the present study.
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