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常开燃油电磁阀高低温流场特性

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常开燃油电磁阀作为共轨燃油喷射系统的关键控制部件,研究启闭两种工作过程中,温度的高低变化对电磁阀流场特性的影响规律,在燃油阀材料的选择和结构优化设计上具有重要意义.首先,对常开燃油电磁阀的工作原理进行分析,并且利用Workbench建立热固耦合有限元仿真模型.其次,深入研究该燃油阀受高低温影响的形变规律,以及阀芯在开启和关闭过程中所受液压力的变化规律.最后,采用Fluent流场仿真软件,研究阀口不同开度下,温度对燃油阀流量-压差特性的影响规律.结果表明,温度对阀口形变影响较小;在启闭两种工作过程中,阀芯所受液压力均呈先增加再减小的变化规律;在同一条件下,燃油介质温度越低压差越大.对燃油电磁阀高低温的仿真分析,在常开燃油电磁阀的初始设计阶段,具有重要实践意义.
Flow Field Characteristics of Normally Open Fuel Solenoid Valve Under High and Low Temperature
As a key control component of the common rail fuel injection system,research on the influence of temperature on the flow field characteristics of the solenoid valve,during the two working processes of opening and closing,is of great significance in material selection and structure optimization design of fuel valve.Firstly,the working principle of fuel solenoid valve is analyzed,and the thermal-solid coupling finite element simulation model is established by Workbench.Then,study on the deformation law of the fuel valve affected under high and low temperature,and variation law of hydraulic force on valve core during opening and closing process.Finally,the research on influence of temperature on flow-pressure difference characteristics of fuel valve at different openings,is carried out through Fluent flow field simulation software.The results show,temperature has little influence on valve port deformation;in the process of opening and closing two kinds of work,the hydraulic force on the spool is first increased and then decreased;under the same conditions,the pressure difference increase along with the fuel oil temperature decrease.The simulation analysis of the high and low temperature of the fuel solenoid valve has important practical significance in the initial design stage of the normally open fuel solenoid valve.

normally open fuel solenoid valvehigh and low temperaturehot deformationflow-presssure characteristichydraulic force

杨柳、韩宇、高天雄、杜冉恒、张晋、陆畅

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燕山大学机械工程学院,河北秦皇岛 066004

燕山大学起重机械关键技术全国重点实验室,河北秦皇岛 066004

燕山大学车辆与能源学院,河北秦皇岛 066004

中国航发长春控制科技有限公司,吉林长春 130102

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常开燃油电磁阀 高低温 热形变 流量-压差特性 液压力

国家自然科学基金青年科学基金国家自然科学基金面上项目

5230507352275068

2024

液压与气动
北京机械工业自动化研究所

液压与气动

CSTPCD北大核心
影响因子:0.453
ISSN:1000-4858
年,卷(期):2024.48(5)
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