The function of pressure refueling system does not reach its full play, because the pressure loss of pressure regulating valve is oversize and the outlet pressure of the system is below the rated value when the outlet pressure of the fuel pump is a constant. Focusing on the problem of high pressure loss from the pressureregulating valve in an aircraft fuel injection system, and the problem of optimizing the valve which was both costly and timeconsuming by test, the inner flow field of the valve was analyzed by numerical simulation. The results of the numerical simulation show the choking effect of the valve is the primary cause of pressure loss, and the structure mutation of inner flow field is the secondary cause. The pressure regulating valve structure was optimized and the optimized valve was satisfied the technical requirement.Finally, after the numerical simulation of the valve with different openings, the ideal flow characteristic curve of the valve was obtained. It provides a reference for the valve selection and application in practical engineering.
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张仅,周瑞祥,王文平,张亚騤.飞机燃油加注系统中调压阀结构的优化改进[J].机床与液压,2016,44(2):113-117. . Structure Improvement and Optimization of the Pressureregulating Valve in an Aircraft Fuel Injection System[J]. Machine Tool & Hydraulics,2016,44(2):113-117