Electromagnetic actuator drive for e.g. actuating air valve in intake tract of engine, has holding device that applies current to coils and secures armature in its end positions so that faces of neighboring poles are oppositely polarized

摘要

#CMT# #/CMT# A separate electromagnetic coil (12) is assigned to each pole (7). A holding device (11) applies electric current to the coils and secures an armature (2) in its end positions so that the pole faces (8,9) of neighboring poles are oppositely polarized. #CMT#USE : #/CMT# For e.g. actuating fixed-cycle air valve in intake tract of internal combustion engine, adjusting gas reversing valves in piston engine. #CMT#ADVANTAGE : #/CMT# Can be easily and cost effectively manufactured since the need for complex electronic power equipment is made unnecessary. Reduces power consumption, loss, and heat production. Simplifies electronic system for controlling and/or regulating supply of electricity to the coils. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The figure shows the cross-sectional view of actuator drive. 2 : Armature 7 : Pole 8,9 : Pole faces 11 : Holding device 12 : Electromagnetic coil.