主办：陕西省汽车工程学会
ISSN 1671-7988  CN 61-1394/TH
创刊：1976年
汽车实用技术

汽车实用技术 ›› 2026, Vol. 51 ›› Issue (11): 91-95,131.DOI: 10.16638/j.cnki.1671-7988.2026.011.016

• 测试试验 • 上一篇    

减速器齿轮参数对整车 NVH 性能的影响 因素研究

何志良，蒲弘杰，段远路，李万平，周荣，林立东，张红军*   

  1. 宜宾凯翼汽车有限公司
  • 发布日期:2026-06-04
  • 通讯作者: 张红军
  • 作者简介:何志良（1989－），男，工程师，研究方向为新能源汽车电驱匹配开发、控制优化及性能提升 通信作者：张红军（1987－），男，工程师，研究方向为整车 NVH 性能集成

Study on Influence Factors of Reducer Gear Parameters on Vehicle NVH Performance

HE Zhiliang, PU Hongjie, DUAN Yuanlu, LI Wanping, ZHOU Rong, LIN Lidong, ZHANG Hongjun*   

  1. Yibin Cowin Automobile Company Limited
  • Published:2026-06-04
  • Contact: ZHANG Hongjun

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摘要： 随着新能源汽车技术的发展，电机转速的不断提高，减速器齿轮副在电机不同转速及 转矩工况下的噪声、振动与声振粗糙度（NVH）问题越发突出。为此，针对纯电动汽车在加 速、滑行工况遇到的啸叫问题，结合常用转速和转矩工况，进行测试分析，并对齿轮进行修 形；最后通过实车噪音测试及对比试验，确认修形参数。结果表明，通过调整齿宽和螺旋角， 将重合度从 4.140 提升到 4.449；通过对齿形鼓形量、齿向鼓形量、齿向斜率三个重要因素的 调整，对加速、滑行工况在问题转速段的噪音优化 5～10 dB(A)，明显改善整车 NVH 性能。

关键词: 电机；减速器；齿轮修形；噪音；NVH 性能；鼓形量

Abstract: With the advancement of new energy vehicle technology and the continuous increase in motor speeds, the noise, vibration, harshness (NVH) issues of reducer gear pairs under different motor speeds and torque conditions have become increasingly prominent. To address the whining noise encountered by battery electric vehicles under acceleration and coasting conditions, this study conducted testing and analysis based on common speed and torque operating conditions, followed by gear modification. Finally, the modification parameters were validated through real-vehicle noise testing and comparative experiments. The results show that by adjusting the tooth width and helix angle, the contact ratio was increased from 4.140 to 4.449. Through optimization of three key parameters–profile crowning amount, lead crowning amount, and lead slope–the noise in the problematic speed range under acceleration and coasting conditions was reduced by 5~10 dB(A),significantly improving the overall vehicle NVH performance.

Key words: motor; reducer; gear modification; noise; NVH performance; crowning amount