Abstract
Analysis consisting of numerical simulations along with lab experiments of interaction effects between key parameters on the electromagnetic force based on response surface methodology (RSM) has been also proposed to optimize the design of high-speed solenoid valve (HSV) and improve its performance. Numerical simulation model of HSV has been developed in Ansoft Maxwell environment and its accuracy has been validated through lab experiments. Effect of change of core structure, coil structure, armature structure, working air gap, and drive current on the electromagnetic force of HSV has been analyzed through simulation model and influence rules of various parameters on the electromagnetic force have been established. The response surface model of the electromagnetic force has been utilized to analyze the interaction effect between major parameters. It has been concluded that six interaction factors including working air gap with armature radius, drive current with armature thickness, coil turns with side pole radius, armature thickness with its radius, armature thickness with side pole radius, and armature radius with side pole radius have significant influence on the electromagnetic force. Optimal match values between coil turns and side pole radius; armature thickness and side pole radius; and armature radius and side pole radius have also been determined.
Highlights
high-speed solenoid valve (HSV) is one of the most critical components of electronic control fuel system (ECFS) whose strong electromagnetic force and rapid response characteristics have a great influence on the flexible fuel injection of ECFS [1,2,3,4]
A numerical model of HSV has been developed in Ansoft Maxwell environment with a good accuracy
It provides an effective platform for the research on the electromagnetic force characteristic of HSV for electronic unit pump (EUP)
Summary
HSV is one of the most critical components of electronic control fuel system (ECFS) whose strong electromagnetic force and rapid response characteristics have a great influence on the flexible fuel injection of ECFS [1,2,3,4]. The research on electromagnetic force key parameters of HSV is of great significance for designing and optimizing HSV, but it has been rarely reported. In this paper, numerical simulations have been carried out along with lab experiments and analysis method based on RSM has been proposed to investigate the interaction effects between key parameters on the electromagnetic force of HSV. HSV mainly includes armature, iron core, coil, valve stem, reset spring, terminal, and plug. After turning the power on, iron core attracts armature; pulls the valve stem; closes the seal cone; cuts off fuel loop; and sets up the high pressure in the pump chamber which is required for fuel injection. Reset spring forces armature to reset valve stem, decreasing the high pressure fuel inside pump chamber and stopping the fuel injection. Controlling of injection timing and injection quantity can be achieved through precisely adjusting the closing time and duration of control valve stem [14]
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