EP 0869285 A3 19990922 - Load sensing control with flushing circuit
Title (en)
Load sensing control with flushing circuit
Title (de)
Lastdruckgeführter Förderstromregler mit Spülkreislauf
Title (fr)
Régulateur de débit à détection de charge avec circuit de rinçage
Publication
Application
Priority
DE 19713934 A 19970404
Abstract (en)
[origin: EP0869285A2] The regulator is for a hydraulic pump (2), feeding at feed pressure into a working conduit (5) with built-in measuring throttle (6). A scavenging circuit (30,38,40,39) branches off the working conduit upstream of the throttle, to scavenge the inner housing chamber of the pump. The circuit has a scavenging valve (30) connected to a load pressure record line (7). The valve interrupts the scavenging circuit, when the pressure in the load pressure record line exceeds a set first threshold value. When a load pressure is below the set first threshold, the scavenging valve throttles the flow through the scavenging circuit with increasing load pressure.
IPC 1-7
IPC 8 full level
F04B 49/08 (2006.01); F04B 53/08 (2006.01); F04B 53/18 (2006.01)
CPC (source: EP)
F04B 49/08 (2013.01); F04B 53/08 (2013.01); F04B 53/18 (2013.01); F04B 2205/061 (2013.01); F04B 2205/062 (2013.01); F04B 2205/09 (2013.01); F04B 2205/15 (2013.01)
Citation (search report)
- [Y] US 3856436 A 19741224 - LONNEMO K
- [Y] US 4072443 A 19780207 - HEATH RONALD ALFRED
- [A] US 3753627 A 19730821 - WARD E
- [A] GB 1284310 A 19720809 - TASK CORP [US]
- [A] DE 2925236 A1 19810115 - DANFOSS AS
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 0869285 A2 19981007; EP 0869285 A3 19990922; EP 0869285 B1 20020911; DE 19713934 A1 19981008; DE 19713934 B4 20040603; DE 59805468 D1 20021017
DOCDB simple family (application)
EP 98103929 A 19980305; DE 19713934 A 19970404; DE 59805468 T 19980305