ELECTROMAGNETIC VALVE DEVICE Russian patent published in 2003 - IPC

FIELD: mechanical engineering; engines. SUBSTANCE: proposed device contains housing with inlet and outlet channels, seat, pull-back spring and stop member. Coil of electromagnetic, fixed core and movable armature are arranged along longitudinal axis of housing. Lower part of armature is rigidly connected with shutoff member. Stop member limits travel of shutoff member. Clearance is left between armature and core. Value of clearance exceeds values of working stroke of shutoff member. Stop member is made in form of thrust washer rigidly fixed in housing and installed coaxially with shutoff member. Horizontal projection is located in upper part of shutoff member over its perimeter. Said projection forms thrust flat. Shutoff member thrust through this flat against thrust washer when valve device is open. Level of thrust washer location exceeds level of thrust flat of shutoff member by value corresponding to shutoff member working stroke. EFFECT: improved wear resistance of valve device, provision of quick action and stability of operating characteristics. 4 cl, 1 dwg