EP 3290710 A1 20180307 - VARIABLE DISPLACEMENT VANE PUMP
Title (en)
VARIABLE DISPLACEMENT VANE PUMP
Title (de)
VERSTELLBARE FLÜGELZELLENPUMPE
Title (fr)
POMPE À PALETTES À DÉBIT VARIABLE
Publication
Application
Priority
- JP 2015090303 A 20150427
- JP 2016062416 W 20160419
Abstract (en)
A variable displacement vane pump includes: a control orifice 104 that imparts resistance to a flow of working oil discharged from pump chambers 6; a flow-amount control valve 102 that operates in accordance with an upstream-downstream differential pressure of the control orifice 104 and controls a flow amount of the working oil discharged from the pump chambers 6; a variable control valve 103 that is operated by the working oil that has passed through the control orifice 104 and controls an amount of eccentricity of a cam ring 4 with respect to a rotor 2 by controlling a pressure difference between a first fluid pressure chamber 15 and a second fluid pressure chamber 16; and a return passage 42 that is connected to the flow-amount control valve 102 and circulates a part of the working oil discharged from the pump chambers 6 through a suction passage 40.
IPC 8 full level
F04C 14/24 (2006.01); F04C 2/344 (2006.01); F04C 14/22 (2006.01); F04C 14/26 (2006.01)
CPC (source: EP US)
F04C 2/344 (2013.01 - EP US); F04C 14/22 (2013.01 - US); F04C 14/223 (2013.01 - EP US); F04C 14/24 (2013.01 - EP US); F04C 14/26 (2013.01 - US); F04B 2201/1213 (2013.01 - US); F04C 2210/206 (2013.01 - EP US); F04C 2270/20 (2013.01 - US); F04C 2270/215 (2013.01 - US); F04C 2270/585 (2013.01 - US)
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
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3290710 A1 20180307; EP 3290710 A4 20181003; CN 107532594 A 20180102; JP 2016205310 A 20161208; JP 6577227 B2 20190918; US 2018112661 A1 20180426; WO 2016175090 A1 20161103
DOCDB simple family (application)
EP 16786367 A 20160419; CN 201680024535 A 20160419; JP 2015090303 A 20150427; JP 2016062416 W 20160419; US 201615568844 A 20160419