混动车型平衡轴齿轮敲击噪声优化

doi:10.19562/j.chinasae.qcgc.2023.04.018

摘要/Abstract

摘要：

为了优化纵置混动车型平衡轴齿轮敲击噪声，对比横置车型结构差异，识别出飞轮惯量变大，曲轴模态降低，平衡轴驱动齿圈角加速度变大，导致平衡轴齿轮敲击，而常规单级减振器匹配呈现“此消彼长”规律，无法覆盖发动机全转速段角加速度优化目标，因此开发出双级扭转减振器，降低平衡轴驱动齿圈角加速度，可解决齿轮敲击问题；使用Simpack软件搭建了齿轮敲击多体动力学模型，研究了平衡轴齿轮敲击产生和传播机理，进而开发出双消隙平衡轴，通过减小啮合过程中轮齿双侧受力冲击，进一步优化了齿轮敲击噪声。结果表明，综合使用双级减振器和双消隙平衡轴可解决齿轮敲击问题，对平衡轴齿轮设计和敲击问题优化具有重要的工程意义。

关键词: 平衡轴, 敲齿声, 双级减振器, Simpack, 多体动力学

Abstract:

In order to optimize the balance shaft gear rattle noise of the longitudinal hybrid vehicle, by comparing the structural differences with the transverse hybrid vehicle, it is identified that the increase of the inertia of the flywheel, the decease of the crankshaft mode, and the increase of the drive gear angular acceleration of the balance shaft lead to the gear rattle of the balance shaft. However, the conventional single-stage TVD matching presents the law of "one thing decreases and the other grows", which cannot cover the optimization objective of the angular acceleration of the engine at the full speed segment. Therefore, a two-stage TVD is developed to reduce the angular acceleration of the drive gear of the balance shaft, which can solve the problem of gear rattle. The Simpack software is used to build a multi-body dynamic model of gear rattle, which studies the mechanism of gear rattle generation and propagation of the balance shaft. Then a double anti-backlash balance shaft is developed to further optimize the noise of gear rattle by reducing the force impact on both sides of the gear teeth during meshing. The results show that the combined use of two-stage TVD and double anti-backlash balance shaft can solve the gear rattle problem, which has important engineering significance for the design of the balance shaft gear and the optimization of rattle problem.

Key words: balance shaft, gear rattle, two-stage TVD, Simpack, multi-body dynamics

刘月普,关莹,张燕,赵亮,陈强,杨景玲,沈拓. 混动车型平衡轴齿轮敲击噪声优化[J]. 汽车工程, 2023, 45(4): 690-698.

Yuepu Liu,Ying Guan,Yan Zhang,Liang Zhao,Qiang Chen,Jingling Yang,Tuo Shen. Gear Rattle Optimization of Balance Shaft of HEV[J]. Automotive Engineering, 2023, 45(4): 690-698.

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