回油型面结构对计量装置特性影响研究

为评价回油型面结构对燃油计量装置特性的影响,以Matlab为平台建立了燃油计量装置仿真模型,采用相同输入量对三角形、矩形和圆形回油型面结构进行仿真计算,并对其仿真结果进行对比和分析。结果表明:3种回油型面结构对装置的计量特性都有较大影响,在相同条件下,三角形回油型面结构的计量特性最优,而矩形回油型面结构的最差;当活门开启时,矩形及圆形回油型面结构的开度面积及流量特性都会出现震荡现象,而三角形回油型面结构则是稳定的。

Effects of Fuel Returned Shape on Metering Devices Characteristics

In order to evaluate the impact of fuel returned shape on characteristics of fuel metering devices,the simulation model of fuel metering device was established based on Matlab.The triangle,rectangle,circle fuel returned shape characteristics were studied with the same inputs and the simulation were compared and analyzed.The results show that fuel returned shape has great influence on the stability and flow characteristics of the device,and with the same condition,the triangle shape’s is the best,while the rectangle’s is the worst.Moreover,when the valve opens,the opening area characteristics and flow characteristics of the rectangle and circle shape have oscillation phenomenon,but the triangle ’s is stable.