EP 2682610 B1 20151209 - Regulator system of a hydraulic variable capacity pump
Title (en)
Regulator system of a hydraulic variable capacity pump
Title (de)
Regelsystem einer Hydraulik-Verstellpumpe
Title (fr)
Système de réglage d'une pompe hydraulique à débit variable
Publication
Application
Priority
EP 12174666 A 20120702
Abstract (en)
[origin: EP2682610A1] The system (S) has a main stage (11) i.e. pressure-servo-controlled 3/2-way-control valve (12), fixed to a pressure line (8) and a return-flow line (19) for controlling control pressure acting at control cylinders (Z1, Z1'). A pilot valve is attached to the stage for controlling pressures, torque and/or volume. The pilot valve is connected to a pressure signal line (21) that is guided to pilot pressure control of the control valve at an inlet side. The pilot valve is attached to a low-pressure area and connected to the cylinders for quantity- and/or rotational torque control at an outlet side. The pilot valve is designed as a flow control pilot valve (24), a torque control pilot valve (25) and a pressure regulating pilot valve (34).
IPC 8 full level
F04B 49/00 (2006.01); F15B 11/05 (2006.01)
CPC (source: EP)
F04B 49/002 (2013.01); F15B 11/055 (2013.01); F15B 2211/20553 (2013.01)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
DOCDB simple family (application)
EP 12174666 A 20120702