Investigations on lubrication characteristics of high-speed electric multiple unit gearbox by oil volume adjusting device

IF 3.3 3区工程技术 Q1 ENGINEERING, MULTIDISCIPLINARY

Journal of Zhejiang University-SCIENCE A Pub Date : 2022-12-01 DOI:10.1631/2023.A2200274

Shuai Shao, Kailin Zhang, Yuan Yao, Yi Liu, Jun Gu

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引用次数: 1

Abstract

In this paper, a numerical simulation model of the flow field in a gearbox with an oil volume adjusting device is established for the first time to study its influence on the lubrication characteristics of a high-speed electric multiple unit (EMU) gearbox. The moving particle semi-implicit (MPS) method is used to numerically simulate the internal flow field of the gearbox of the high-speed EMU under working conditions. The effects of the velocity of the high-speed EMU, the immersion depth, and the oil sump temperature on the power loss of the gears and the lubricant quantity of each bearing are studied and provide an effective tool for the quantitative evaluation of the lubrication characteristics of the gearbox. The lubrication characteristics of the gearbox under different working conditions are studied when the oil volume adjusting device is closed and opened. The results show that the oil volume adjusting device mainly changes the amount of lubricant stirred by the output gear by changing the flow rate of lubricant from the cavity pinion (Cavity P) to the cavity gear (Cavity G), and thus affects the power loss of gears and the lubricant quantity of each bearing.

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油量调节装置对高速电动多单元变速箱润滑特性的研究

本文首次建立了带油量调节装置的齿轮箱内流场的数值模拟模型，研究了其对高速动车组(EMU)齿轮箱润滑特性的影响。采用运动粒子半隐式方法对高速动车组齿轮箱在工作状态下的内部流场进行了数值模拟。研究了高速动车组的速度、浸泡深度和油底壳温度对齿轮功率损失和各轴承润滑油量的影响，为定量评价高速动车组的润滑特性提供了有效工具。研究了油量调节装置关闭和打开时齿轮箱在不同工况下的润滑特性。结果表明，油量调节装置主要通过改变润滑油从腔体小齿轮(腔体P)流向腔体齿轮(腔体G)的流量来改变输出齿轮搅拌的润滑油量，从而影响齿轮的功率损失和各轴承的润滑油量。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Zhejiang University-SCIENCE A 工程技术-工程：综合

CiteScore

5.60

自引率

12.50%

发文量

2964

审稿时长

2.9 months

期刊介绍： Journal of Zhejiang University SCIENCE A covers research in Applied Physics, Mechanical and Civil Engineering, Environmental Science and Energy, Materials Science and Chemical Engineering, etc.