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Common Rail injector electromagnetic valve iron core material analysis

Introduction Common-rail injector fuel injection timing control is affected in many ways, among which the high-speed solenoid valve iron core material used in the injector is an important control component, and its response characteristics directly affect the performance of the injector. The finite element software calculation is an important means to understand the characteristics of the electromagnetic valve iron core material, and can help the application of the electromagnetic valve core material in the common rail system. In this paper, FLUX software is used to calculate and analyze the response speed, electromagnetic force, etc. of the core material of common rail electromagnetic valve, so as to provide reference for the further study of common rail electromagnetic valve core material parts. 1 Calculation Model Electronically controlled common-rail solenoid valve core material components shown in Figure 1, the entire component is mainly composed of core, inside and outside inlays, limiting core, armature and coil components. The material of each part is shown in Table 1. In Table 1, except for the coil bobbin and the copper wire, the others are all electromagnetic non-linear materials, in which the coil is 60 turns. Fig.1 Solenoid valve core material part structure Table 1 Solenoid valve core material part material [1] part material iron core silicon steel outer circle insert DT4 inner insert hole sleeve DT4 limit core C r12MoVA armature 1 J117 coil copper coil skeleton nylon 2 static electromagnetic field analysis 2.1 Solenoid valve core material static test Common rail electromagnetic valve core material static test uses a square wave current, test the solenoid valve core material was tested at 1 A, 2 A up to 10 A current Armature generated suction. The resulting electromagnet suction force curve is shown in Figure 2 (in the figure, the electromagnet suction force curve of 12 solenoid valve core materials). Fig. 2 Electromagnet suction characteristic curve 2.2 Solenoid valve core material FLUX static simulation calculation In the FLUX simulation calculation, calculate the suction characteristic of the electromagnet under 2 A to 10 A current, in order to compare with the test.

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