某型燃油调节阀的仿真与故障分析

Simulation and Fault Analysis on a Certain Type of Fuel Control Valve

针对某型燃油调节阀中指令活门在试验过程中出现不能工作的工况,为了节省试验的人力和财力,依据其工作原理,建立燃油调节阀静态和动态数学模型。分析指令活门与计量活门位置关系,得出此系统中指令活门不能控。利用AMESim搭建模型仿真分析,找出指令活门不能工作因素。改变燃油调节阀计量活门弹簧刚度和预紧力,仿真出指令活门不能正常工作范围。通过建立模型与仿真分析出的结果与试验过程中出现的工况相符。提出通过更换弹簧能解决指令活门不能工作情况,该建模与仿真分析方法为后续试验和该阀的改型设计提供参考。

In order to save manpower and money,static and dynamic mathematical models of a certain type of fuel control valve were established according to its working principle.The relationship between the position of the command valve and the metering valve is analyzed,and it is concluded that the command valve in this system cannot be controlled.AMESim was used to build model simulation analysis to find out the factors that the command valve could not work.By changing the spring stiffness and preload of the fuel regulating valve,the command valve can not work normally.The model and simulation results are consistent with the experimental conditions.It is proposed that the command valve can not work by changing the spring.The modeling and simulation analysis method can provide reference for the subsequent test and the design of the valve modification.