工程设计学报2017，Vol.24Issue(4)：395-402,8.DOI:10.3785/j.issn.1006-754X.2017.04.005
燃油系统旋涡泵压力脉动的控制研究
Study on pressure fluctuation control of a regenerative pump for fuel system
摘要
Abstract
In order to improve the NVH (noise ,vibration and harshness ) performance and sound quality of fuel pumps ,the pressure fluctuation control of the regenerative pumps for the fuel sys-tem is carried out .The pressure fluctuation characteristics of a regenerative pump were studied by the CFD numerical simulation and theoretical analyses .Two impellers with different degree of uneven blades were designed by the method of random blade distribution .An improved design method of the uneven blade distribution impeller was developed based on the CFD numerical sim -ulation and theoretical analyses .The noise test for the fuel pump of the pressure fluctuation con-trol scheme was conducted to verify the feasibility of the scheme .Results showed that the high-pitched noise disappeared in the high frequency and the NVH performance was improved for the fuel pump with uneven blade distribution impeller compared with even blade distribution impeller .Random uneven blade distribution impeller could significantly disperse the peak value of the blade passing frequency .With the degree of the uneven distribution blades increasing ,the amplitudes of blade passing frequencies decreased more .Therefore ,the use of random uneven blade distribution method helps to improve pressure fluctuation characteristics of the regenerative pump and to provide an important engineering value for the fuel pump NVH performance improvement .关键词
旋涡泵/压力脉动/NVH性能/非等距分布叶片/数值模拟Key words
regenerative pump/pressure fluctuation/NVH performance/uneven distribution分类
机械制造引用本文复制引用
张露,武鹏,吴大转,洪伟荣..燃油系统旋涡泵压力脉动的控制研究[J].工程设计学报,2017,24(4):395-402,8.基金项目
国家自然科学基金资助项目(51606165) （51606165）
