汽车电动燃油泵流道结构优化研究  

Structural optimization of flow channel for automobtive electric fuel pump

作　　者：王小燕[1] 张振东[1] 刘建国[1] 陈忠[1] WANG Xiao-yan;ZHANG Zhen-dong;LIU Jian-guo;CHEN Zhong(School of Mechanical Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China)

机构地区：[1]上海理工大学机械工程学院,上海200093

出　　处：《机电工程》2018年第4期363-368,共6页Journal of Mechanical & Electrical Engineering

基　　金：教育部博士点基金资助项目(200802520001)

摘　　要：针对初始设计的燃油泵叶轮处进油口和出油口间压差过大引起脉动和噪声,从而降低工作效率的问题,提出了在泵的叶轮和进油端分别配置若干平衡孔和油气分离孔的方法。利用正交试验法,选取了平衡孔直径、平衡孔径向位置半径、油气分离孔直径、油气分离孔径向位置半径为4个因素,建立了L9(34)正交表,得到了9种燃油泵结构方案;基于ANSYS三维仿真平台,对9种方案中的燃油泵进行了仿真分析;最终,选取了进出口压力差较小且输出流量降低较少的作为最优方案,并试制出了样品,将其样品与初始设计的燃油泵进行了台架试验。结果表明:与初始设计相比,最优方案样品进出油口的压差显著降低,但输出流量降低较小,说明平衡孔在降低叶轮进出口压差中起了较大的作用,且仿真与实验结果基本一致。In order to solve the problem of the large pressure difference between the impeller s inlet and the outlet of the initial design for the fuel pump which caused pulsation and noise and reduced the work efficiency of the pump,several balance holes and oil-gas separation holes were configured at the impeller and inlet of the fuel pump.Based on the orthogonal experimental method,the balance hole s diameter,the radial radius of the balance holes,oil-gas separation hole s diameter,the radial radius of oil-gas separation hole were chose as four structural parameters variables.Then the L 9(3 4)orthogonal table was established to get nine kinds of fuel pump structure program which simulated on ANSYS simulation stage.The final selection of fuel pump that the small pressure difference between inlet and outlet and the less reduction of output flow were processed as the samples.The samples were tested with the initial design of the fuel pump on the test bench.The results indicate that the pressure difference between the inlet and outlet of the sample is significantly lower than that of the initial design,but the output flow rate is less reduced.It shows that the balance holes play a large role in reducing the pressure difference between impeller inlet and outlet,and the simulation is basically consistent with the experimental results.

关 键 词：燃油泵 叶轮 平衡孔 油气分离孔 数值仿真 结构优化 

分 类 号：TH122[机械工程—机械设计及理论] TK413.8[动力工程及工程热物理—动力机械及工程]