Hydraulic control system for several users - uses movable piston to match pump output to demand

摘要

The control system is linked to a variable output pump by a fluid-activated operating cylinder. It uses the position of the operating cylinder piston (20) to identify the quantity of medium needed to match pump output to the requirements of one or more independent users (3, 103) and to operate further parallel pumps in achieving same. The independent users are connected in parallel to a high-pressure line connected to a pump (1). They feed in parallel into the low-pressure reservoir, from which the pump draws oil. USE - Simplifies control during under/over supply to user.