Effect of characteristic parameters on the magnetic properties of solenoid valve for high-pressure common rail diesel engine.

In the paper, the influences of cross-sectional area of iron core and ampere turn on the static electromagnetic characteristics have been studied through numerical simulation method. The iron core’s structure was redesigned in order to achieve the strong electromagnetic force. The ampere turn has greatly effects on the electromagnetic force for the magnetic saturation phenomenon; the oversize ampere turn would weak the electromagnetic conversation owing to the energy losses. Besides that, in order to quantitatively find out the effects of solenoid valve parameters on the dynamic response characteristics, the dynamic process of solenoid valve has been simulated. After the simulation method is validated by the experiment, the influences of four parameters (i.e. firing current, holding current, spring pre-tightening force and spring stiffness) on the whole process of the solenoid valve have been studied. The results show that the four parameters have great effects on the dynamic response characteristics of solenoid valve. The firing current impacts the opening process and holding current impacts the closing process, respectively. The spring pre-tightening force has influence on both the opening process and closing process. The spring stiffness almost has no effect on the dynamic characteristics of solenoid valve. [ABSTRACT FROM AUTHOR]