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Effects of Control Valve Structure Parameters on the Flow Characteristics of Oil Drainage Progress of Electronic Unit Pump for Diesel Engine Beijing Jiaotong University
- Format:
- Book
- Conference/Event
- Author/Creator:
- Zhou, Yuhao, author.
- Conference Name:
- Automotive Technical Papers (2021-01-01 : Warrendale, Pennsylvania, United States)
- Language:
- English
- Physical Description:
- 1 online resource cm
- Place of Publication:
- Warrendale, PA SAE International 2021
- Summary:
- In the present paper, a three-dimensional (3D) internal flow field model of an electronic unit pump (EUP) fuel system oil drainage progress was established, including solenoid valve model, control valve model, high-pressure oil passage, and the plunger cavity model. From the microscopic point of view, the flow characteristics, such as pressure, velocity, and turbulence kinetic energy, are analyzed by using Fluent. This paper uses the combination of one-dimensional (1D) software AMESim and 3D software Fluent to achieve the purpose. The pressure curve of the high-pressure pipe is extracted from the control valve module of the 1D EUP fuel system model, and the velocity curve of the plunger movement is extracted from the plunger pump module. The two sets of curves are dynamically linked to the flow field calculation with a User-Defined Function (UDF), and the flow field change of the single pump fuel system control valve is calculated by Fluent. Using the dynamic grid technology to achieve the movement of the spool and plunger, the results show that the pressure at the same time is higher in the region with higher boundary pressure, and the pressure value of the low-pressure oil chamber is almost the same. The larger the diameter of the seal the greater the turbulence intensity of the head of the flow field. The change of the sealing cone angle affects the width and width of the slit gap during the opening of the spool, thus affecting the circulation performance
- Notes:
- Vendor supplied data
- Publisher Number:
- 2021-01-5048
- Access Restriction:
- Restricted for use by site license
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