Results 261 to 270 of about 4,061,646 (326)

Power Losses of Oil-Bath-Lubricated Ball Bearings—A Focus on Churning Losses

Lubricants
This study investigates the power losses of rolling element bearings (REBs) lubricated using an oil bath. Experimental tests conducted on two different deep-groove ball bearings (DGBBs) provide valuable insights into the behaviour of DGBBs under ...
F. de Cadier de Veauce, Y. Marchesse, T. Touret, C. Changenet, F. Ville, L. Amar, C. Fossier   +6 more
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Churning loss characteristics of a wet three-phase high-speed reluctance motor

Journal of Zhejiang University-SCIENCE A
With the increasing requirements of electro-hydrostatic actuators (EHAs) for power, volume, and pressure, there is a growing tendency in the industry to combine the motor and pump to form a so-called ‘motor pump’ to improve the integration. In this paper,
Zhenzhou Zhang, Mingzhu Dai, Chenchen Zhang, Yi Chen, Bin Meng   +4 more
semanticscholar   +2 more sources

A Novel Prediction Model for Churning Power Loss of Spur Gear

Lubrication Science
The prediction of churning power loss has been a difficult problem in the analysis of spur gears. Thus, an analytical prediction model based on the redefinition of churning power loss and energy transformation is proposed to estimate the churning power ...
Fuchun Jia, Binyu Wang, Yao Fu
semanticscholar   +2 more sources

A Note on Flow Regimes and Churning Loss Modeling

Volume 8: 11th International Power Transmission and Gearing Conference; 13th International Conference on Advanced Vehicle and Tire Technologies, 2011
The purpose of this study is to investigate the various fluid flow regimes generated by a pinion running partly immersed in an oil bath and the corresponding churning power losses. In a series of papers, the authors have established several loss formulae whose validity depends on two different flow regimes characterized via a critical Reynolds number ...
C. Changenet, G. Leprince, F. Ville, P. Velex   +3 more
semanticscholar   +5 more sources

Churning loss modeling for shroud gears driven by physics-data hybrids

Mechanical Systems and Signal Processing
Xu Qian, Size Yin, Tianyu Sun, Konghua Yang, Sujiao Chen, Yaxu Chu, Yonghua Zhang, Xiaobo Yu, Chunbao Liu   +8 more
semanticscholar   +2 more sources

Numerical Investigation on Churning Loss Torque and Oil Distribution of Reducer Based on Lattice Boltzmann Method

Tribology Transactions, 2021
Churning loss and lubrication performance are key issues that need to be considered for the efficiency of electric vehicle reducers. In this article, a 3D transient computational fluid dynamics model based on the lattice Boltzmann method is proposed to ...
Ran Gong, Q. Gong, Huajun Che, Zhigang Zhang   +3 more
semanticscholar   +1 more source

Churning Loss Estimation for Manual Transmission Gear Box Using CFD

SAE International Journal of Passenger Cars - Mechanical Systems, 2015
<div class="section abstract"><div class="htmlview paragraph">Fuel economy is one of the factors that drives the automobile sector today, and the demand for fuel efficient vehicles continues to increase by the day. Power loss in the vehicle driveline directly affects the fuel economy and must be reduced to achieve maximum fuel economy ...
Chandrasekhar Kodela, Michael Kraetschmer, Santosh Basa   +2 more
semanticscholar   +2 more sources

Churning power loss of the intermediate gearbox in a helicopter under splash lubrication

Proceedings of the Institution of mechanical engineers. Part J, journal of engineering tribology, 2021
Based on computational fluid dynamics, a two-phase flow model was established to calculate the churning power loss of the spiral bevel gears under splash lubrication. The error between the simulation results and experiment results is only 7.04%. Taking a
Fengxia Lu, Meng Wang, Heyun Bao, Wei Huang, R. Zhu   +4 more
semanticscholar   +1 more source

Housing Influence on Churning Losses in Geared Transmissions

Volume 7: 10th International Power Transmission and Gearing Conference, 2007
In a previous paper, a series of analytical formulas were presented enabling accurate predictions of churning losses for one gear which is typical of automotive transmission geometry. However, this formulation does not take into account the influence of flanges and deflectors.
Changenet, Christophe, Velex, Philippe
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A Numerical Analysis Method of the Churning Power Loss of a Planetary Gear System

International Conference on Mechanical and Electronics Engineering, 2022
The power loss is a very important parameter for the planetary gear train. It can significantly influence the transmission performance of the planetary gear train. Thus, the power loss analysis can be helpful for improving the transmission performance of
Shenlong Li, Xiaohua Song, Suping Zhao, Chaobo Chen   +3 more
semanticscholar   +1 more source