基于混合建模方法的车用比例电磁阀热效应影响分析  

Analysis of Thermal Effect on Proportional Solenoid Valve Used in Vehicles Based on Hybrid Modeling

作　　者：任延飞 席军强[1] 陈慧岩[1] 马锴文 REN Yanfei;XI Junqiang;CHEN Huiyan;MA Kaiwen(School of Mechanical Engineering,Beijing Institute of Technology,Beijing 100081,China)

机构地区：[1]北京理工大学机械与车辆学院,北京100081

出　　处：《北京理工大学学报》2022年第3期251-260,共10页Transactions of Beijing Institute of Technology

基　　金：基础产品创新计划车用动力科研专项基金资助项目(JCCPCX201704)。

摘　　要：针对现有方法无法准确分析、评估热效应对车用比例电磁阀动态性能影响的问题,提出了一种基于多物理场有限元方法与系统动力学混合建模的分析方法.该方法首先在考虑环境温度下,根据电磁铁的发热与散热特性,建立包含电磁、温度、结构的有限元模型,获得准确的温度场分布及关键参数的变化规律;然后,再与系统动力学方程相结合,建立考虑温度场的系统动态模型;最后,通过试验对比分析了电磁阀在无温升和有温升时的动态特性.研究结果表明:由温度场引起的参数变化对动态特性有很大影响,当电压为8 V时,电磁阀启动时间延迟了2 ms,建压时间延迟了3 ms;通过试验验证了该方法能够分析热效应对电磁阀动态性能的影响.In order to tackle the problem that existing methods cannot accurately analyze and evaluate the influence of thermal effects on dynamic performance of proportional solenoid valves used in vehicles,a hybrid modeling analysis method based on multi-physics finite element method and system dynamics was proposed.Firstly,taking ambient temperature into account,based on heating and heat dissipation characteristics of electromagnets,a finite element model including electromagnetism,temperature,and structure was established to obtain accurate temperature field distribution and the change law of key parameters;then,electromagnet data and system dynamic equations were combined to establish a system dynamic model with temperature field considered.Finally,two types of dynamic characteristics were analyzed through experiments when there was no temperature rise and when there was a temperature rise.The research results show that:parameter changes caused by temperature field have a great influence on dynamic characteristics.When supply voltage is 8 V,the start-up time of solenoid valve is delayed by 2 ms,and the pressure building time is delayed by 3 ms.It is verified by experiments that this method can analyze the influence of thermal effects on the dynamic performance of solenoid valves.

关 键 词：比例电磁阀 热效应 有限元方法 系统动力学 

分 类 号：U463[机械工程—车辆工程]