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research-article

EFFECTS OF CONTROL VALVE?S STRUCTURE PARAMETERS ON THE CIRCULATION CHARACTERISTICS FOR AN ELECTRONIC UNIT PUMP

[+] Author and Article Information
Wan-lin Zhao

School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, 100044, China
16121390@bjtu.edu.cn

Guoxiu Li

School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, 100044, China
Li_guoxiu@yahoo.com

Lan Wang

School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, 100044, China
14121342@bjtu.edu.cn

Hong-Meng Li

School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, 100044, China
hongmengli@bjtu.edu.cn

Jie Wang

China North Engine Research Institute, Tianjin 300400, China
1824742432@qq.com

Shuangyi He

China North Engine Research Institute, Tianjin 300400, China
502598112@qq.com

1Corresponding author.

ASME doi:10.1115/1.4041386 History: Received May 22, 2016; Revised August 18, 2018

Abstract

The control valve is an essential component in electronic unit pump fuel injection systems that controls the flow rate with high precision electrical signal. Thus, high-precision and flexibility are required in the working process of a fuel injection system. The flow capacities (indicated by mass flow rate) of a control valve are important technical indicators in the discharge process of electronic unit pump fuel injection systems. In the present paper, the transient flow characteristics within the control valve during the discharge process of an electronic unit pump have been studied using a CFD approach. Three essential structure parameters of the unit pump control valve (valve core lift, seal diameter and seal cone angle) have been investigated and their effects on circulation characteristics have been evaluated. The variation trends have been observed and the changes of significant physical parameters (i.e. average flow velocity at valve's outlet, vapor volume fraction, and mass flow rate) and the crucial physical field distributions (i.e. velocity field and vapor volume fraction field) were analyzed. Within the investigation, the visualization of the internal flow of control valve provides more detailed information of the flow fields. The paper highlights how each parameter influences flow characteristics and indicates the best parameters to select to enhance the circulation characteristics.

Copyright (c) 2018 by ASME
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