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

Zhou, X; Walker, P; Zhang, N; Zhu, B; Ruan, J

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

Zhou, X Walker, P

Zhang, N

Zhu, B Ruan, J

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Publication Type:: Journal Article
Citation:: Mechanism and Machine Theory, 2014, 79 pp. 46 - 63
Issue Date:: 2014-01-01

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Field	Value	Language
dc.contributor.author	Zhou, X	en_US
dc.contributor.author	Walker, P https://orcid.org/0000-0003-3988-3966	en_US
dc.contributor.author	Zhang, N https://orcid.org/0000-0001-6408-0044	en_US
dc.contributor.author	Zhu, B	en_US
dc.contributor.author	Ruan, J https://orcid.org/0000-0003-4481-4893	en_US
dc.date.available	2020-05-25T19:02:47Z
dc.date.issued	2014-01-01	en_US
dc.identifier.citation	Mechanism and Machine Theory, 2014, 79 pp. 46 - 63	en_US
dc.identifier.issn	0094-114X	en_US
dc.identifier.uri	http://hdl.handle.net/10453/35270
dc.description.abstract	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. © 2014 Elsevier Ltd.	en_US
dc.relation.ispartof	Mechanism and Machine Theory	en_US
dc.relation.isbasedon	10.1016/j.mechmachtheory.2014.04.007	en_US
dc.subject.classification	Design Practice & Management	en_US
dc.title	Numerical and experimental investigation of drag torque in a two-speed dual clutch transmission	en_US
dc.type	Journal Article
utslib.citation.volume	79	en_US
utslib.for	0913 Mechanical Engineering	en_US
utslib.for	0902 Automotive Engineering	en_US
utslib.for	0906 Electrical and Electronic Engineering	en_US
utslib.for	0910 Manufacturing Engineering	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Mechanical and Mechatronic Engineering
utslib.copyright.status	open_access
pubs.publication-status	Published	en_US
pubs.volume	79	en_US

Abstract:

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. © 2014 Elsevier Ltd.

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http://hdl.handle.net/10453/35270