Abstract
Electronic unit pump (EUP) is a time controlled fuel injection system which is used on diesel engine to meet emissions regulations and improve the fuel economy. High-speed solenoid valve is one of its key components. It's rapid response has an effect on the precise control of fuel injection quantity and fuel injection timing. The rapid response of solenoid valve is determined by the electromagnetic force. The simulation model of high-speed solenoid valve is established in Ansoft environment. The accuracy of the model is validated by comparing to the experiment results and the maximum deviation is 9%. The parameters change of iron core, winding, armature, assembly and control on the influence of the electromagnetic force have been studied by simulation model. It is concluded that the excitation coil turns, working air gap, drive current and armature thickness are the main influence factors on electromagnetic force.
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