电磁阀式喷油器流量特性的多目标仿真优化

Multi-Objective Simulation Optimization of Flow Characteristics of Solenoid Valve Injector

为提升国产电磁阀式喷油器的流量特性,建立AMESim电磁阀式喷油器一维仿真模型,对改变喷油器的关键结构参数进行仿真计算,分析结构参数对喷油器流量特性的影响。基于响应曲面试验设计方法,利用Design-Expert软件,寻找静态流量和动态流量范围与关键结构参数的回归方程。以静态流量和动态流量范围为目标函数,进行电磁阀式喷油器的关键结构参数多目标仿真优化设计。采用多目标模拟退火MOSA优化算法作为寻优策略,优化后的喷油器静态流量提高3%,达到了0.138 L/min;动态流量范围提高7.14%,达到5.25。

In order to improve the flow characteristics of domestic solenoid valve injector,the paper establishes a one-dimensional simulation model of AMESim solenoid valve injector.It firstly simulates and calculates the key structural parameters of the injector and analyzes the influence of structural parameters on the flow characteristics of the injector.Secondly,it finds the the regression equiation between static and dynamic flow range and key structural parameters with the software of Design-Expert based on the experimental design method of response surface.Thirdly,it carries out multi-objective simulation optimization design of key structural parameters of solenoid valve injector with static and dynamic flow ranges as objective functions.Finally,it takes multi-objective simulated annealing MOSA optimization algorithm as optimization strategy,and the static flow rate of the optimized injector increased by 3%,reaching 0.138 L/min,and the dynamic flow range increased by 7.14%,reaching 5.25.