燃油主副出口开启特性及流量分配调控参数计算及验证

针对燃油调节器主副出口组件参数匹配难、串装试验效率低等问题，以一体化燃油主副出口组件为基础，系统分析了影 响主、副出口开启特性及燃油流量分配的影响因素及影响规律。利用AMESim软件构建了精确的仿真模型，对各影响因素及影响 规律进行了定量计算。利用Isight建立以调控参数为优化变量，建立了设计尺寸链及参数强关联性为约束条件的多目标优化数学 模型，得到了影响燃油主副出口开启压力及特定位置燃油流量分配的最优调控参数，并在样机上对最优调控参数进行了试验验 证。结果表明：试验结果与仿真优化结果相符，最优调控参数为弹簧刚度23.41 N/mm、支座下垫片0.5 mm、支座上垫片1.0 mm、弹 簧垫片1.0 mm、阀座活门配合间隙0.0102 mm，证明了建模仿真及多参数寻优联合优化方法，能够解决强关联参数问题的可行性和 有效性。

Calculation and Verification of Opening Characteristics and Flow Distribution Regulation Parameters of Main and Auxiliary Fuel Outlets

Aiming at the problems of difficult parameter matching of main and auxiliary outlet components of the fuel regulator and low efficiency of installation and test, based on the integrated main and auxiliary fuel outlet components, the influencing factors and laws affect? ing the opening characteristics and the fuel distribution of the main and auxiliary fuel outlets were systematically analyzed. An accurate sim? ulation model was constructed using AMESim, and the influencing factors and influencing laws were quantitatively calculated. A multi-ob? jective optimization mathematical model was established using Isight with regulation parameters as optimization variables and design di? mension chain and strong parameter correlation as constraints. The optimal regulation parameters affecting the opening pressure of main and auxiliary fuel outlets and fuel flow distribution at specific positions were obtained, and the optimal regulation parameters were verified by experiments on the prototype. The results show that the experimental results are consistent with the optimization simulation results. The optimal regulation parameters are the spring stiffness of 23.41N/mm, support lower gasket thickness of 0.5mm, support upper gasket thick? ness of 1.0 mm, spring gasket thickness of 1.0mm, and plunger fitting clearance of 0.0102mm. The feasibility and effectiveness of the joint- optimization method adopting modeling and simulation and multi-objective optimization in solving problems with strongly correlated param? eters is proved.