Elektromagnet-Ventilantriebsvorrichtung zum Antrieb eines Ventils eines Verbrennungsmotors

摘要

The electromagnetic valve apparatus 10 includes a holder 18 which is fixed to the valve 12, and an armature 20 which is fixed to the holder 18. The armature 20 allows more magnetic flux to flow than the holder 18. The holder may be made of resin and the armature has a thickened portion 20c. Alternate energisation of coils 22, 26 causes reciprocation of the armature which is returned to a central position on de-energisation of the coils by springs 32, 34. <IMAGE>