混动总成咕咕音机理分析及控制技术研究

doi:10.3969/j.issn.1001-2222.2025.03.005

车用发动机 ›› 2025, Vol. 0 ›› Issue (3) : 32-39. DOI: 10.3969/j.issn.1001-2222.2025.03.005

混动总成咕咕音机理分析及控制技术研究

黎谦¹，王田修¹，高辉²，黄元毅¹，罗德洋¹

作者信息 +

Analysis and Control of Hybrid Powertrain Cooing Sound

LI Qian¹，WANG Tianxiu¹，GAO Hui²，HUANG Yuanyi¹，LUO Deyang¹

Author information +

文章历史 +

摘要

混动总成在怠速充电工况下有疑似咕咕音，进行数据采集和分析后，确定该异响为具有发动机半阶次特征的咕咕音。根据其产生机理分析确定了混合动力总成咕咕音源于轴系扭转振动高谐次分量激励，并由混合动力总成弯扭模态和EGR模态耦合放大产生。由此提出了更换柔性飞轮、增加DHT连接支架、增加EGR螺栓支撑点三个优化方案，最终解决了咕咕音异响问题。针对咕咕音的分析和应对方法对于解决该类问题有较强的参考作用。

Abstract

A suspected cooing sound was identified in the hybrid powertrain under the idle charging condition. Data collection and analysis confirmed that this abnormal sound was a cooing sound exhibiting engine half-order characteristics. Analysis of the generation mechanism revealed that the cooing sound originated from excitation by high harmonic components of shaft system torsional vibration, which was then amplified through the coupling of hybrid powertrain bending-torsional mode and EGR mode. Consequently, three optimization schemes were put forward, including replacing the flexible flywheel, adding a DHT connection bracket, and adding an EGR bolt support point. These schemes successfully eliminated the abnormal cooing sound. The analysis methodology and countermeasures provide significant reference value for addressing similar NVH problems.

导出引用

黎谦, 王田修, 高辉, 黄元毅, 罗德洋. 混动总成咕咕音机理分析及控制技术研究[J]. 车用发动机. 2025, 0(3): 32-39 https://doi.org/10.3969/j.issn.1001-2222.2025.03.005

LI Qian, WANG Tianxiu, GAO Hui, HUANG Yuanyi, LUO Deyang. Analysis and Control of Hybrid Powertrain Cooing Sound[J]. Vehicle Engine. 2025, 0(3): 32-39 https://doi.org/10.3969/j.issn.1001-2222.2025.03.005