等增益比燃油计量活门型孔设计计算

In order to solve the problem of great variation of the flow gain ratio of common fuel metering valve holes, such as square, round and triangle, a design idea of fuel metering valve holes with equal flow gain ratio was proposed. Through theoretical calculation, the basic form and detailed design calculation method of the curve function of the equal gain ratio valve hole were obtained, and the calculation examples were given. The ratio of flow gain ratio to the metering valve opening disturbance quantity was a constant value, and these two had a positive ratio relationship. The smaller disturbance quantity indicated the smaller flow gain ratio and the higher metering accuracy. Compared with the square hole, the advantages of equal gain ratio hole with small gain and strong anti-jamming ability under the condition of small flow rate were explained in detail, and through the design of the combined hole, the problem of excessive gain under the condition of large flow rate of the valve hole with equal gain ratio was avoided.