Regulator, for hydraulic pump, has electrically driven actuator for exerting force directly on flow regulating valve in addition to pressure difference across choke in working line

摘要

The regulator has a choke (11) in the working line (9) and a delivery flow regulating valve (17) subjected to the pressure difference across the choke and applying an actuating pressure to an adjuster (3) of the hydraulic pump's (2) delivery volume to reduce it if the pressure difference is increasing. At least one electrically driven actuator (27) exerts a force directly on the flow regulating valve in addition to the pressure difference.