Optimization of Churning Resistance of Hypoid Gear for Automobile Rear Axle

Yunxiao Shen; Jinli Xu; Jiwei Zhu; Wenchao Yang

doi:10.16578/j.issn.1004.2539.2021.09.026

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Optimization of Churning Resistance of Hypoid Gear for Automobile Rear Axle

Development·Application | 更新时间：2022-11-10

- Optimization of Churning Resistance of Hypoid Gear for Automobile Rear Axle
- Journal of Mechanical Transmission Vol. 45, Issue 9, Pages: 170-175(2021)
- 作者机构：
  
  1.上汽通用五菱汽车股份有限公司，广西柳州 545000
  2.武汉理工大学机电工程学院，湖北武汉 430070
- 作者简介：
- 基金信息：
- DOI：10.16578/j.issn.1004.2539.2021.09.026
  CLC：
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沈云啸,徐劲力,朱继伟等.汽车后桥准双曲面齿轮搅油阻力优化[J].机械传动,2021,45(09):170-175.

Shen Yunxiao,Xu Jinli,Zhu Jiwei,et al.Optimization of Churning Resistance of Hypoid Gear for Automobile Rear Axle[J].Journal of Mechanical Transmission,2021,45(09):170-175.
沈云啸,徐劲力,朱继伟等.汽车后桥准双曲面齿轮搅油阻力优化[J].机械传动,2021,45(09):170-175. DOI： 10.16578/j.issn.1004.2539.2021.09.026.

Shen Yunxiao,Xu Jinli,Zhu Jiwei,et al.Optimization of Churning Resistance of Hypoid Gear for Automobile Rear Axle[J].Journal of Mechanical Transmission,2021,45(09):170-175. DOI： 10.16578/j.issn.1004.2539.2021.09.026.

摘要

以降低某汽车后桥准双曲面齿轮搅油阻力为目的，基于VOF（Volume of Fluid）两相流模型及标准,k-ε,湍流模型建立了汽车后桥三维数值模型，分析了后桥准双曲面齿轮搅油功率损失机理；提出了将准双曲面齿轮由螺栓连接改为去除螺栓结构并在其两侧面增加挡板以减少搅油阻力的方法。通过Fluent仿真，对改进前后汽车后桥准双曲面齿轮搅油阻力进行了分析，与经验公式进行对比并进行了试验验证。结果表明，仿真分析及试验结果有较好的一致性；经验公式与仿真结果吻合度较高但小于试验值；适当的结构改进及挡油板的加入可显著降低后桥搅油阻力；随着转速升高，阻力减少数值越大，最高减阻可达35.9%。

Abstract

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 axle hypoid gear is analyzed. The method of removing the bolt structure and adding baffle plates on both sides of hypoid gear is proposed to reduce the churning resistance. Through Fluent simulation， the churning resistance before and after improvement rear axle hypoid gear is analyzed， and compared with the empirical formula， and verified by experiments. The results show that， results of simulation analysis and test are in good agreement， the empirical formula is in good agreement with the simulation result， but less than the experimental value， the proper structural improvement and addition of oil baffle can significantly reduce the rear axle churning resistance， as the speed increases， the resistance reduction value increases， the maximum drag reduction can reach 35.9%.

关键词

VOF后桥准双曲面齿轮搅油阻力

Keywords

Volume of fluidRear axleHypoid gearChurning resistance

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