Results 21 to 30 of about 7,125,299 (256)

An Experimental Investigation of Churning Power Losses of a Gearbox

Volume 10: 2017 ASME International Power Transmission and Gearing Conference, 2017
In this study, load-independent (spin) power losses of a gearbox operating under dip-lubrication conditions are investigated experimentally using a final-drive helical gear pair from an automotive transmission as the example system. A dedicated gearbox is developed to operate a single gear or a gear pair under given speed and temperature conditions.
J. Polly, D. Talbot, A. Kahraman, A. Singh, H. Xu   +4 more
openaire   +2 more sources

Thermal-Hydraulic Modeling of Oil-Immersed Motor Pump

Applied Sciences, 2023
The integrated design of the motor and axial piston pump eliminates the coupling structure, resulting in a compact and lightweight motor-pump structure. The challenge of motors overheating has always been a major concern.
Junqiang Shi, Ziyang Li, Jingcheng Gao, Dongjing Chen, Xiaotao Li, Ying Li, Jin Zhang, Xiangdong Kong   +7 more
doaj   +1 more source

Research on the Power Loss of High-Speed and High-Load Ball Bearing for Cryogenic Turbopump

Machines, 2022
This paper studies the lubrication characteristics of ball bearings for cryogenic turbopumps. First, the frictional coefficients between 440C and a Ag coating, 440C and solid PTFE (polytetrafluoroethylene), and 440C and a PTFE coating in LN2 (liquid ...
Wenhu Zhang, Chaojie Zhang, Xusheng Miao, Liang Li, Sier Deng   +4 more
doaj   +1 more source

Computational and experimental analysis of the churning power losses in an industrial planetary speed reducer [PDF]

WIT Transactions on Engineering Sciences, 2012
Advantages of planetary speed reducers are well known and due to their compact design and power density they are suitable for a wide range of applications. Efficiency is becoming more and more of a main concern in the design of power transmissions and the demand for high efficiency gearboxes is continuously increasing.
CONCLI, FRANCO, GORLA, CARLO
openaire   +2 more sources

Research on Splash Lubrication Characteristics of the Planetary Gear Train Based on the MPS Method

Jixie chuandong, 2023
In order to analyze the lubrication characteristics of the planetary gear transmission of shield main drive reducers, a simulation model of splash lubrication of the single-stage planetary gear train is established using the moving particle semi-implicit
Shi Lubing, Chen Huixiao, Yan Shidang, Wang Jun, Ding Haohao, Pei Bang, Liu Zhongming, Wang Wenjian   +7 more
doaj  

Simulation Analysis of Churning Loss of Internal Cavity Structure of Gearbox based on MPS Method

, 2022
In order to explore the influence of the internal cavity structure on the churning loss and to improve the efficiency of the automobile transmission system，the gearbox is used as the research object，and a numerical simulation model of the gearbox ...
Dong Guo, Dongyuan Luo, Fangchao Chen
core   +1 more source

Real Power Loss Reduction by Enhanced Imperialist Competitive Algorithm [PDF]

, 2017
In this paper, an Enhanced Imperialist Competitive (EIC) Algorithm is proposed for solving reactive power problem. Imperialist Competitive Algorithm (ICA) which was recently introduced has shown its decent performance in optimization problems.
Kanagasabai, Lenin
core   +1 more source

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 different oil levels, generating essential data for developing accurate models of power losses. Observations
Florian de Cadier de Veauce, Yann Marchesse, Thomas Touret, Christophe Changenet, Fabrice Ville, Luc Amar, Charlotte Fossier   +6 more
openaire   +2 more sources

Optimization of Churning Resistance of Hypoid Gear for Automobile Rear Axle

Jixie chuandong, 2021
The purpose of is to discuss an accessible approach to reduce the churning resistance of hypoid gear of automobile rear axle. A CFD model of automobile rear axle is conducted based on VOF and standard k-ε model， the churning power loss mechanism of rear ...
Yunxiao Shen, Jinli Xu, Jiwei Zhu, Wenchao Yang   +3 more
doaj  

Power loss analysis in altered tooth-sum spur gearing

MATEC Web of Conferences, 2018
The main cause of power loss or dissipation of heat in case of meshed gears is due to friction existing between gear tooth mesh and is a major concern in low rotational speed gears, whereas in case of high operating speed the power loss taking place due ...
Sachidananda H. K., Raghunandana K., Shivamurthy B.   +2 more
doaj   +2 more sources