EP 1553308 A1 20050713 - ELECTROHYDRAULIC ACTUATION SYSTEM
Title (en)
ELECTROHYDRAULIC ACTUATION SYSTEM
Title (de)
ELEKTROHYDRAULISCHES BETÄTIGUNGSSYSTEM
Title (fr)
SYSTEME DE VERINS ELECTRO-HYDRAULIQUES
Publication
Application
Priority
- JP 0308865 W 20030711
- JP 2002202792 A 20020711
Abstract (en)
An object of the invention is to provide an electro-hydraulic actuation system which can prevent the generation of a shortage in volume of a fluid supplied to a hydraulic actuator having a larger load pressure of hydraulic actuators of a plurality of electro-hydraulic actuators. The electro-hydraulic actuation system 100 changes a working fluid discharge volume of a variable displacement hydraulic pump 111 by a selector valve 141, a two-position valve 142, a spring 143 and a discharge volume changing hydraulic cylinder 144 based on the maximum pressure of load pressures of a hydraulic motor 122 and a hydraulic motor 132 and a working fluid discharge pressure of the variable displacement hydraulic pump 111. <IMAGE>
IPC 1-7
IPC 8 full level
F15B 9/14 (2006.01); F15B 9/16 (2006.01); F15B 11/16 (2006.01); F15B 11/22 (2006.01)
CPC (source: EP)
F15B 9/14 (2013.01); F15B 9/16 (2013.01); F15B 11/163 (2013.01); F15B 11/165 (2013.01); F15B 11/22 (2013.01); F15B 2211/20553 (2013.01); F15B 2211/3052 (2013.01); F15B 2211/30525 (2013.01); F15B 2211/30535 (2013.01); F15B 2211/3056 (2013.01); F15B 2211/3111 (2013.01); F15B 2211/3144 (2013.01); F15B 2211/31576 (2013.01); F15B 2211/324 (2013.01); F15B 2211/326 (2013.01); F15B 2211/327 (2013.01); F15B 2211/355 (2013.01); F15B 2211/50518 (2013.01); F15B 2211/5151 (2013.01); F15B 2211/57 (2013.01); F15B 2211/6054 (2013.01); F15B 2211/6057 (2013.01); F15B 2211/6306 (2013.01); F15B 2211/6654 (2013.01); F15B 2211/6656 (2013.01)
Citation (search report)
See references of WO 2004007973A1
Designated contracting state (EPC)
DE FR IT
DOCDB simple family (publication)
EP 1553308 A1 20050713; AU 2003280997 A1 20040202; JP WO2004007973 A1 20051110; WO 2004007973 A1 20040122
DOCDB simple family (application)
EP 03741367 A 20030711; AU 2003280997 A 20030711; JP 0308865 W 20030711; JP 2004521200 A 20030711