Abstract: Based on the results of no-load experiment on solenoid valve and its model，factors which influence solenoid valve’s response time are analyzed. Two models are set up by using of FEM (finite element method) and magnetic circuit simulation. Using the two models, the characteristics of the response are calculated by changing the values of spring rate, the predeformation of spring, the mass of armature, the resistance of discharge circuit, the amount of windings and void air gap. Moreover, how these factors influence the characteristics of the response is obtained. The results of simulation are basically consistent with the experiments. And the advantage and disadvantage of the two models are analyzed. Finally what should be paid attention to in the progress of solenoid valve’s design and manufacture is partially summarized, which can give a good help to the work of solenoid valve design in the future.

Key words: solenoid valve, response characteristics, FEM, magnetic circuit simulation