Title:
METER-OUT FLOW CONTROL SYSTEM CONTROLLED BY A REGULATOR
Document Type and Number:
WIPO Patent Application WO/2013/081213
Kind Code:
A1
Abstract:
Disclosed is a meter-out flow control system which automatically variably controls meter-out flow by using the load pressure occurring in an actuator as a signal pressure to minimize unnecessary flow resistance and prevent cavitation from occurring in the actuator. The meter-out flow control system includes: a hydraulic pump connected to an engine; an actuator connected to the hydraulic pump; a control valve disposed in a passage between the hydraulic pump and the actuator and having a passage so that the working oil is metered in the actuator from the hydraulic pump or metered out from the actuator into a hydraulic tank during spool switching; a regulator disposed between the meter-out passage of the control valve and the passage of the hydraulic tank to variably adjust the opening degree of the path for metering out the working oil discharged from the actuator into the hydraulic tank so as to correspond to the load pressure occurring in the actuator.
Inventors:
PARK SUNG-BOK (KR)
JEE SE-RIB (KR)
JEE SE-RIB (KR)
Application Number:
PCT/KR2011/009205
Publication Date:
June 06, 2013
Filing Date:
November 30, 2011
Export Citation:
Assignee:
VOLVO CONSTR EQUIP AB (SE)
PARK SUNG-BOK (KR)
JEE SE-RIB (KR)
PARK SUNG-BOK (KR)
JEE SE-RIB (KR)
International Classes:
F15B13/042; E02F9/22; F15B13/02; G05D16/08
Foreign References:
| KR20060024919A | 2006-03-20 | |||
| KR19990044400A | 1999-06-25 | |||
| KR19980063919A | 1998-10-07 | |||
| JPH06117408A | 1994-04-26 |
Attorney, Agent or Firm:
YOON, Eui-Seoup (KR)
윤의섭 (KR)
윤의섭 (KR)
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Claims: