预选挡对双离合变速器敲击响应与齿轮动力学影响的试验研究

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振动与冲击 ›› 2024, Vol. 43 ›› Issue (10) : 185-196.

论文

周益1,2，黄斌2，石晓辉3，郭栋3，梅自元2，徐辉辉2

作者信息 +

Experimental study on the effect of the preselection gear on the rattle dynamics analysis of a dual-clutch transmission

ZHOU Yi1,2,HUANG Bin2,SHI Xiaohui3,GUO Dong3,MEI Ziyuan2,XU Huihui2

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文章历史 +

摘要

搭建可模拟发动机转速波动的变速器敲击动力学试验台架，采集双离合变速器(DCT)的壳体振动和齿轮瞬时转速信号，研究不同预选挡位下DCT变速器的敲击响应和齿轮系统动力学随输入角加速度幅值变化的演变规律。根据齿轮系统间隙非线性动力学模型的计算结果和齿轮啮合基本定律，提出了一种基于齿轮特征频率角加速度幅值特性的齿轮运动状态判定准则。台架敲击试验结果表明预选挡显著改变DCT变速器的敲击响应和齿轮副动力学行为，当输入角加速度幅值增加到某一数值时，DCT变速器敲击响应发生向上跳跃现象，主动和被动子变速器之间产生明显的低频动力学耦合，承载齿轮转速信号呈现显著的多谐波非线性特性。根据提出的齿轮运动状态判定准则判断跳跃突变后的承载齿轮副发生齿面分离和敲击现象，动力学突变后的动力学耦合导致DCT变速器的敲击响应急剧恶化。最后，在整车上验证了台架试验的动力学耦合和敲击响应突变现象。

Abstract

A transmission rattle bench that simulates the engine speed fluctuations was built. The housing vibration and the transient rotational signals of the gears of a dual-clutch transmission were measured to investigate the evolution of the rattle response and geartrain dynamics along with the varying input angular acceleration level and different preselection gears. According to the calculated results from a lumped parameter geartrain backlash-nonlinear dynamic model and the law of the gear meshing, a criterion for judging the gear motion state based on the characteristics of the angular acceleration amplitude of the gear’s characteristic frequency is proposed. The bench test results indicate that the preselection gear significantly varies the rattle response and gear pair dynamic behaviour in the DCT transmission. The DCT rattle response features a jump-up phenomenon once the input shaft angular acceleration level increases to a certain amplitude, a clear low-frequency dynamic coupling between the active and passive sub-gearboxes is clearly observed, and the rotational signal of the loaded gear shows significant multi-harmonic nonlinearity. The teeth separation and vibro-impact rattle of the loaded gear pair can be deduced based on the proposed criteria for the gear motion judgement. The dynamic coupling after the dynamic change in the geartrain considerably deteriorate the DCT rattle response. Finally, the dynamic coupling and rattle jump-up phenomenon are validated throughout the vehicle experiment.

导出引用

周益1,2，黄斌2，石晓辉3，郭栋3，梅自元2，徐辉辉2. 预选挡对双离合变速器敲击响应与齿轮动力学影响的试验研究[J]. 振动与冲击, 2024, 43(10): 185-196

ZHOU Yi1,2,HUANG Bin2,SHI Xiaohui3,GUO Dong3,MEI Ziyuan2,XU Huihui2. Experimental study on the effect of the preselection gear on the rattle dynamics analysis of a dual-clutch transmission[J]. Journal of Vibration and Shock, 2024, 43(10): 185-196

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