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Improvement in DCT Shaft Lubrication through CFD Method
- Zhan Cao - Hebei University of Technology, China China Automotive Technology and Research Center Co., Ltd., China ,
- Yong Chen - Hebei University of Technology, China; Geely Powertrain Research Institute, China ,
- Ting Su - Geely Powertrain Research Institute, China ,
- Hai Liu - Hebei University of Technology, China ,
- Libin Zang - Hebei University of Technology, China
ISSN: 1946-3952, e-ISSN: 1946-3960
Published October 25, 2018 by SAE International in United States
Citation: Cao, Z., Chen, Y., Su, T., Liu, H. et al., "Improvement in DCT Shaft Lubrication through CFD Method," SAE Int. J. Fuels Lubr. 11(3):219-228, 2018, https://doi.org/10.4271/04-11-03-0011.
Dual-clutch transmission (DCT) output shaft 1 (OS1) mount position is higher than the transmission lubricant level. Needle bearings and idler gears on OS1-insufficient lubrication issues and the transmission lubrication system were investigated. In the design model, the transmission housing lubrication channel and oil guide component design were studied. For numerical analysis, the STAR-CCM+ software was used to simulate transmission internal complex oil-gas multiphase transient flow morphology that monitored the four bore oil churning volumes of OS1. Finally, lubrication test results affirm simulation predictions that idler gears, needle bearings, and synchronizer rings on OS1 obtain sufficient lubrication provided that a reliable method to inspect lubrication design functions is available.