Numerical and experimental investigation of drag torque in a two-speed dual clutch transmission

Publisher:
Elsevier
Publication Type:
Journal Article
Citation:
Mechanism and Machine Theory, 2014, 79 pp. 46 - 63
Issue Date:
2014-09
Full metadata record
Files in This Item:
Filename Description Size
Revision_Mechanism and Machine Theory_V3.docxAccepted Manuscript Version643.38 kB
Microsoft Word XML
The theoretical analysis of drag torques within a two-speed dual clutch transmission is presented in this article. The numerical models are developed to study the different sources of drag torques in dual clutch transmission. Simulations are performed in Matlab/Simulink platform to investigate the variation of drag torques under different operating conditions. Then an experimental investigation is conducted to evaluate the proposed model using an electric vehicle powertrain test rig. Outcomes of experimentation confirm that simulation results agree well with test data. Therefore the proposed model performs well in the prediction of drag torque for the transmission, and can be applied to assess the efficiency of the transmission. Results demonstrate that the entire drag torque is dominated by the viscous shear in the wet clutch pack and gear churning losses. This lays a theoretical foundation to future research on reducing drag torque and applications of drag torque in powertrain system efficiency optimization.
Please use this identifier to cite or link to this item: