论文和技术资料

In this paper an electromagnetic solenoid actuator (EMVA) consisting of an upper and lower electromagnet, a linear moving armature and two preloaded springs is considered as a potential approach in Variable Valve Actuation (VVA) Systems for Internal Combustion Engines. In opposition to common approaches the underlying EMVA make use of a permanent magnet in the upper electromagnet. The analysis of the upper electromagnet has been performed using finite element (FEM) simulation. Thereby an axially symmetrical 2D FEM model in COMSOL Multiphysics has been used taking into account all non-linear effects. The static force calculation has been applied using the virtual work method.