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两用燃料发动机噪声源特性的试验研究

丁加岑 郝志勇 郑旭 张焕宇 张庆辉 刘功文

丁加岑, 郝志勇, 郑旭, 张焕宇, 张庆辉, 刘功文. 两用燃料发动机噪声源特性的试验研究[J]. 机械科学与技术, 2015, 34(12): 1919-1923. doi: 10.13433/j.cnki.1003-8728.2015.1221
引用本文: 丁加岑, 郝志勇, 郑旭, 张焕宇, 张庆辉, 刘功文. 两用燃料发动机噪声源特性的试验研究[J]. 机械科学与技术, 2015, 34(12): 1919-1923. doi: 10.13433/j.cnki.1003-8728.2015.1221
Ding Jiacen, Hao Zhiyong, Zheng Xu, Zhang Huanyu, Zhang Qinghui, Liu Gongwen. Experimental Study of Noise Source Identification of a Dual Fuel Engine[J]. Mechanical Science and Technology for Aerospace Engineering, 2015, 34(12): 1919-1923. doi: 10.13433/j.cnki.1003-8728.2015.1221
Citation: Ding Jiacen, Hao Zhiyong, Zheng Xu, Zhang Huanyu, Zhang Qinghui, Liu Gongwen. Experimental Study of Noise Source Identification of a Dual Fuel Engine[J]. Mechanical Science and Technology for Aerospace Engineering, 2015, 34(12): 1919-1923. doi: 10.13433/j.cnki.1003-8728.2015.1221

两用燃料发动机噪声源特性的试验研究

doi: 10.13433/j.cnki.1003-8728.2015.1221
基金项目: 

"十二五"国家科技支撑计划重点项目(2011BAE22B05)资助

详细信息
    作者简介:

    丁加岑(1989-),硕士,研究方向为内燃机噪声控制及活塞动力学特性研究,dingjiacen19891028@163.com

    通讯作者:

    郝志勇(联系人),教授,博士,haozy@zju.edu.cn

Experimental Study of Noise Source Identification of a Dual Fuel Engine

  • 摘要: 以一台车用4缸汽油压缩天然气(CNG)两用燃料发动机为研究对象进行噪声源识别,测试工况为怠速工况、最大转矩工况与最大功率工况。首先测试发动机的1 m声压级,定位噪声最大的端面为发动机前端,再使用基于波束形成技术的声阵列系统对发动机前端和进气侧进行分析,分析结果表明汽油与CNG燃料主要噪声频段均位于1 000~2 000 Hz,进而识别出主要噪声源为链壳,通过振动测试验证了噪声源,并对两种燃料的噪声源特点进行了比较。研究表明波束形成技术在噪声源识别中具有快捷、直观的优点;两用燃料发动机CNG燃料怠速噪声较汽油燃料各对应面大5~7 dB,250 Hz以下的燃烧噪声是主要成因。
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出版历程
  • 收稿日期:  2014-02-24
  • 刊出日期:  2015-12-05

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