EP 0164602 B1 19890920 - DEVICE FOR REGULATING THE PRESSURE AND THE CAPACITY OF A VARIABLE-CAPACITY PUMP
Title (en)
DEVICE FOR REGULATING THE PRESSURE AND THE CAPACITY OF A VARIABLE-CAPACITY PUMP
Publication
Application
Priority
DE 3422089 A 19840614
Abstract (en)
[origin: US4708596A] A pressure and delivery regulating device for an adjustable pump includes a directional control valve connected in a discharge conduit and to a control conduit branching from the discharge conduit between the pump and the directional control valve. The control conduit leads to a setting piston for the adjustment of the pump. The directional control valve is controlled by a solenoid which in turn is controlled by a control system consisting of a regulating circuit, a delivery limiting circuit and a control circuit for the solenoid. The output signal from the regulating circuit controls a desired delivery value signal supplied to the delivery limiting circuit. A follow-up circuit connected between the regulating circuit and the delivery limiting circuit corrects the regulating signal and a circuit for producing a direction dependent signal from the actual pressure provides a damping of the regulating circuit.
IPC 1-7
IPC 8 full level
F04B 49/00 (2006.01); F04B 49/06 (2006.01); F04B 49/08 (2006.01)
CPC (source: EP US)
F04B 49/06 (2013.01 - EP US); F04B 49/08 (2013.01 - EP US)
Designated contracting state (EPC)
AT DE FR GB IT
DOCDB simple family (publication)
EP 0164602 A2 19851218; EP 0164602 A3 19871216; EP 0164602 B1 19890920; EP 0164602 B2 19941228; AT E46561 T1 19891015; DE 3422089 A1 19851219; DE 3573150 D1 19891026; JP 2654770 B2 19970917; JP S614881 A 19860110; US 4708596 A 19871124
DOCDB simple family (application)
EP 85105969 A 19850515; AT 85105969 T 19850515; DE 3422089 A 19840614; DE 3573150 T 19850515; JP 11901085 A 19850603; US 89287486 A 19860728