空气辅助燃油喷嘴机-电-磁耦合特性仿真

In order to solve the problems and challenges brought by the high coupling of mechanical, electromagnetic, electronic control, fluid and other disciplines during the working process of air-assisted fuel nozzle, the paper adopts the numerical simulation method and explores the coupling characteristics of machine-electricity-magnetic coupling during the working process of air-assisted fuel nozzle by using the steady-state electromagnetic simulation and transient co-simulation, and deeply explored the influence of excitation strength, peak current, spring preload and spool inertia mass on the spool force and kinematic characteristics.The study found that during the process of increasing the excitation strength of the excitation coil, the force on the spool continued to increase, but the rate of increase gradually decreased. When the excitation intensity is constant, increasing the peak driving current has no obvious effect on improving the nozzle responsiveness. Since the magnetic field build-up and electromagnetic force rise are not instantaneous, increasing the spring preload will lengthen the nozzle opening hysteresis but reduce the nozzle closing delay. Reducing the inertial mass of the spool helps to reduce the movement time during the opening and closing of the nozzle and improve the responsiveness of the nozzle.