
Altair 2019 技术大会论文集
1
基于 SPH 方法的纯电动车减速器润滑仿真
赵迁
1
,杨良会
1
,赵勇钢
2
,赵春艳
2
,刘斯倩
3
(1.北京新能源汽车技术创新中心有限公司,北京 100176;
2.北京新能源汽车股份有限公司, 北京 100176;
3. 澳汰尔工程软件(上海)有限公司, 上海 200436)
摘 要: 最高输入转速和最大输入扭矩的逐渐提升给纯电动车减速器的润滑带来了非常大
的挑战。为研究某减速器油液流动形态和功率损耗,用 HyperMesh 软件进行前处理,用基
于 SPH 算法的粒子法求解器 nanoFluidX 对四种工况进行润滑仿真。后处理结果显示,仿
真结果与试验结果在搅油形态上具有较好的一致性,从而验证了该方法的有效性;时域平均
流线图和时域平均油量分布图可以更直观的观测到润滑情况;输出轴扭矩时间历程曲线表明
随着油量的增多和输入转速的提升,搅油带来的效率损失增多。
关键词: 纯电动车;减速器;润滑仿真;SPH
The Lubrication Simulation of Pure Electric Vehicle
Gearbox Based on SPH
Zhao Qian
1
, Yang Lianghui
1
, Zhao Yonggang
2
, Zhao Chunyan
2
& Liu Siqian
3
1. Beijing New Energy Automotive Technology Innovation Center Co., Ltd.
;
2. Beijing Electric Vehicle Co. Ltd.;
3. Altair Engineering Software (Shanghai) Co., Ltd.
Abstract: The gradual increase of maximum input speed and maximum input torque
brings great challenge to the lubrication of pure electric vehicle gearbox. In order to study
the flow pattern and power loss of the lubrication oil in a gearbox, the Hypermesh software
is used for pretreatment, and the particle solver based on SPH algorithm nanoFluidX is
used to simulate the lubrication of the four conditions. The results of post-processing show
that the simulation results are in good agreement with the test results, and the validity of
the method is verified. The time domain average flow graph and the time domain average
oil distribution map can be more intuitively observed. The torque time history curve of the
output shaft shows that with the increase of oil quantity and the input speed,the loss of
efficiency is increased.
Key words: Pure electric vehicle;Gearbox;Lubrication simulation;SPH
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