CONSTRUCTION EQUIPMENT HYDRAULIC SYSTEM AND CONTROL METHOD THEREFOR

Title:

CONSTRUCTION EQUIPMENT HYDRAULIC SYSTEM AND CONTROL METHOD THEREFOR

Document Type and Number:

WIPO Patent Application WO/2014/148808

Kind Code:

A1

Abstract:

The present invention relates to a construction equipment hydraulic system and a control method therefor, and the construction equipment hydraulic system comprises: a plurality of pressure-controlled hydraulic pumps driven by an engine provided to construction equipment; an actuator driven by hydraulic oil discharged from the hydraulic pumps; a closed-center main control valve provided between the hydraulic pumps and the actuator and bypassing virtual flow; and a controller receiving the virtual flow bypassed by the main control valve to control the hydraulic pumps.

Inventors:

THO YONG HO (KR)
JUNG WOO YONG (KR)
CHO YONG LAK (KR)

Application Number:

PCT/KR2014/002301

Publication Date:

September 25, 2014

Filing Date:

March 19, 2014

Export Citation:

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Assignee:

DOOSAN INFRACORE CO LTD (KR)

International Classes:

F15B19/00; E02F9/22

Domestic Patent References:

WO2012057241A1

2012-05-03

Foreign References:

US5176504A	1993-01-05
JP3664733B2	2005-06-29
KR20110054739A	2011-05-25
KR20070106713A	2007-11-05

Other References: