FLOW CONTROL DEVICE

摘要

This invention relates to a flow control device, and more particularly, but not exclusively, to a flow control device that can be used as a valve system for a cylinder of a reciprocating engine or compressor, and alternatively also as a valve actuator for use in controlling flow of a hydraulic fluid to a hydraulically actuated valve. The flow control device includes a flow distribution device having a distribution aperture, the distribution aperture being in continuous flow communication with an inlet; and a flow control assembly having a flow control passage provided therethrough. The flow control assembly and the flow distribution device are displaceable relative to one another, in order for the distribution aperture and the flow control passage to be displaceable between an at least partially aligned condition in which the inlet is in flow communication with an outlet; and an offset condition in which the flow control assembly prevents flow between the inlet and the outlet. The flow control passage has an effective length that is adjustable in order to adjust a period of the aligned condition.