FIELD: machine engineering.
SUBSTANCE: actuator (300) comprises a drive (310, 320) capable of performing a rotary movement, and a pusher (340, 350) connected to a movable part of a linear valve and to the actuator and allowing the drive to be rotated in reciprocating motion respectively for opening and closing the linear valve. The actuator (310, 320) comprises a first cam (310) and a second cam (320) rotatable about an axis. The elongated parts of the first cam (310) and the second cam (320) respectively are located at different angular positions. The pusher (340, 350) comprises a first arm (340) having an end (342). The latter is in contact with profiles of the first cam (310) and the second cam (320). The pusher also comprises a second arm (350) having an end (354) that is attached to a valve shaft (325) and in contact therewith. There are also rigidly connected (360) connecting ends (344, 352) of first arm (340) and the second arm (350) opposite to said ends (342, 354) of the first and second arms (340, 350). The pusher (340, 350) converts rotary movement of the actuator (310, 320) into reciprocating movement of the valve closure element attached to the valve shaft (325).
EFFECT: improved timing control of valve opening and closing, increased stability, low actuation time.
5 cl, 14 dwg
