Electromagnetic actuator for driving gas change lifting valve for internal combustion engine

摘要

The actuator has a reduced mass armature (4) engaged with the valve (2) shaft (10,5) to oscillate between electromagnets (6,7) against diametrically opposed springs (8,9). The armature is reduced in regions of low magnetic flux by trough-shaped recesses (12,12') on its diametrically opposed long sides and parallel blind holes on both sides of a shaft