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 ›› 2022, Vol. 48 ›› Issue (7): 26-29.DOI: 10.16638/j.cnki.1671-7988.2023.07.005

• 新能源汽车 • 上一篇    

新能源汽车增程器 NVH 性能分析

武 彬   

  1. 哈尔滨东安汽车动力股份有限公司,黑龙江 哈尔滨 150060
  • 出版日期:2023-04-15 发布日期:2023-04-15
  • 通讯作者: 武 彬
  • 作者简介:武彬(1981—),男,博士,高级工程师,研究方向为汽车新能源动力系统,E-mail:wubin@daae.cn。

NVH Performance Analysis of New Energy Vehicle Range Extender

WU Bin   

  1. Harbin Dongan Auto Engine Company Limited, Harbin 150060, China
  • Online:2023-04-15 Published:2023-04-15
  • Contact: WU Bin

摘要: 新能源汽车增程器一般为增程专用高效发动机,发动机压缩比较高,燃烧速度较快。 文章分析了发动机燃烧性能对噪声、振动与声振粗糙度(NVH)性能的影响,最大燃烧峰值 压力和较陡的压力升高率会引起振动和噪声的增加。最大燃烧峰值压力接近 6 bar,声压最高 达到 0.16 Pa,振动加速度最高在 3 m/s2 左右。最大燃烧峰值压力为 4 bar 左右,声压最大值 为 0.06 Pa,降低 62.5%,振动加速度基本在 1.5 m/s2 以内,降低 50%。

关键词: 新能源汽车;增程器;NVH;性能分析

Abstract: The range extender of new energy vehicles is generally a special and efficient engine. The engine has high compression ratio and fast combustion speed. In this paper, the influence of engine combustion performance on noise, vibration, harshness (NVH) is analyzed. The maximum combustion peak pressure and steep pressure rise rate will cause the increase of vibration and noise. The maximum combustion peak pressure is close to 6 bar, the maximum sound pressure is 0.16 Pa, and the maximum vibration acceleration is about 3 m/s2 . The maximum combustion peak pressure is about 4 bar, the maximum sound pressure is 0.06 Pa, which is reduced by 62.5 %, and the vibration acceleration is 1.5 m/s2 , which is reduced by 50%.

Key words: New energy vehicle; Range extender; NVH; Performance analysis