A new electromagnetic structure is introduced in the research of electromagnetic valve actuation (EVA) for engine, it uses air as damp and has compact volume. The magnetic field of EVA has been calculated accurately by finite element method, the electromagnetic energy of different gap can be got and the electromagnetic force can be calculated by virtual displacement method. Calculation shows that the electromagnetic force of this new structure can meet the dynamic requirements of EVA. Research result is beneficial to optimization of structure parameter and achievement of control method for EVA.
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