| 某柴油机异响的NVH性能分析与优化 |
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| 引用本文： | 方杰,褚超美,顾明飞,吴彩霞,王晓东,范永奇.某柴油机异响的NVH性能分析与优化[J].农业装备与车辆工程,2020,58(3):131-134. |
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| 作者姓名： | 方杰 褚超美 顾明飞 吴彩霞 王晓东 范永奇 |
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| 作者单位： | 200093 上海市 上海理工大学机械工程学院;200438 上海市 上汽商用车技术中心 |
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| 摘 要： | 为改善某柴油机异响问题,通过振动噪声试验进行分析,找出原机NVH性能问题的部位是FEAD附件支架和前端罩盖。对两部分结构分别提出优化方案并验证,结果表明:提高FEAD附件支架X方向的刚度,断开前端罩盖与FEAD附件支架的连接能有效减小噪声,对优化整机NVH性能效果明显。
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| 关 键 词： | 柴油机 NVH FEAD附件支架 前端罩盖 |
Analysis and Optimization of NVH Performance for Abnormal Noise of a Diesel Engine |
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| Fang Jie,Chu Chaomei,Gu Mingfei,Wu Caixia,Wang Xiaodong,Fan Yongqi.Analysis and Optimization of NVH Performance for Abnormal Noise of a Diesel Engine[J].Agricultural Equipment & Vehicle Engineering,2020,58(3):131-134. |
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| Authors: | Fang Jie Chu Chaomei Gu Mingfei Wu Caixia Wang Xiaodong Fan Yongqi |
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| Institution: | (School of Mechanical Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China;SAIC Commercial Vehicle Technology Center,Shanghai 200438,China) |
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| Abstract: | In order to improve the abnormal noise of a diesel engine,analysis of the vibration and noise test found that the parts of the NVH performance problem of the original engine are FEAD accessory bracket and the front cover.The optimization schemes for the two parts of the structure are proposed and validated respectively.The results show that increasing the X-direction stiffness of the FEAD accessory bracket and disconnecting the front cover from the FEAD accessory bracket can effectively reduce the noise and optimize the NVH performance of the whole engine. |
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| Keywords: | diesel engine NVH FEAD accessory bracket front cover |
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