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第 38 卷 第 3 期                                                                       Vol. 38, No. 3
             2019 年 5 月                          Journal of Applied Acoustics                      May, 2019

             ⋄ 研究报告 ⋄



                      怠速工况下燃油系统的噪声评价和改善                                                          ∗





                                                 程志伟     1,2†   卢义刚     1



                                                 (1 华南理工大学     广州   510640)
                                             (2 广州汽车集团股份有限公司        广州  510623)

                摘要    在实车怠速工况下的噪声振动性能评价过程中，燃油系统是发动机诸多子系统当中一个重要的声源。
                针对这一子系统产生的车内脉动噪声偏大的问题，总结出了对燃油类液体的脉动噪声振动控制机理、原因及
                诊断方法。首先，采用在燃油轨内追加阻尼器的方案很好地抑制了谐频噪声；然后，从燃油泵这一主要激振源
                出发，提出了设定燃油泵单品噪声振动、声品质等目标值的策略，即从源头上控制关键产品的噪声性能。在此
                基础之上，与之相应的解决方案实施之后，怠速工况下的车内噪声提升到了较好的水平，而且，燃油系统噪声
                的主观评价结论也认为得到了明显改善。
                关键词     燃油轨，燃油泵，脉动共鸣噪声
                中图法分类号: TB533+.2           文献标识码: A          文章编号: 1000-310X(2019)03-0345-07
                DOI: 10.11684/j.issn.1000-310X.2019.03.008





                        The noise evaluation and improvement of fuel system at idling



                                              CHENG Zhiwei  1,2  LU Yigang 1

                                   (1 South China University of Technology, Guangzhou 510640, China)
                                  (2 Guangzhou Automotive Group Co., Ltd., Guangzhou 510623, China)

                 Abstract  In the process of the noise and vibration evaluation on actual vehicle at idling, the fuel system is
                 the one of most important sound sources within many sub-systems of engine. In view of the problem that the
                 pulsation noise in the vehicle generated by this subsystem is too high, the mechanism, reason and diagnose
                 method of pulsating noise and vibration for the fuel-like liquids etc., have been summarized. Firstly, the
                 harmonic frequency noise is reduced effectively by adding damper in fuel rail. And since it begins with the fuel
                 pump as excitation source, in order to control the noise performance of key sub-system as the main excitation
                 source, the strategy about target-setting of noise vibration and sound quality index has been proposed, that
                 is to start from the initial sound source. Based on above these, the interior vehicle noise at idling is raised
                 to a better level after the implementation of the corresponding solutions. Moreover, the subjective evaluation
                 conclusion on the fuel system noise is also considered to be significantly improved.
                 Key words Common rail, Fuel pump, Pulsating resonance noise



             2018-03-13 收稿; 2018-07-03 定稿
             国家自然科学基金项目 (11574089)
             ∗
             作者简介: 程志伟 (1979- ), 男, 湖北天门人, 博士研究生, 研究方向: 汽车及发动机噪声振动控制。
             † 通讯作者 E-mail: chengzw79@126.com
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