SYSTEM FOR CONTROLLING HYDRAULIC PUMP IN CONSTRUCTION MACHINE

Title:

SYSTEM FOR CONTROLLING HYDRAULIC PUMP IN CONSTRUCTION MACHINE

Document Type and Number:

WIPO Patent Application WO/2012/011615

Kind Code:

A1

Abstract:

Disclosed is a system for controlling a hydraulic pump in a construction machine which can reduce the discharge flow of the hydraulic pump in proportion to the load pressure of the hydraulic pump to enhance operability by the driver. The present invention provides the system for controlling the hydraulic pump in the construction machine, which is characterized by detecting the discharge pressure of the hydraulic pump and the operation activity of an operation lever, and comparing the detected discharge pressure of the hydraulic pump and a predetermined pressure value, and when the detected discharge pressure exceeds the predetermined pressure value, the maximum dischargeable flow of the hydraulic pump is reduced in proportion to the difference between the detected pressure and the predetermined pressure value.

Inventors:

JOUNG HEA-GYOON (KR)
LEE SANG-HEE (KR)
SHIN HUNG-JU (KR)

Application Number:

PCT/KR2010/004692

Publication Date:

January 26, 2012

Filing Date:

July 19, 2010

Export Citation:

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Assignee:

VOLVO CONSTR EQUIP AB (SE)
JOUNG HEA-GYOON (KR)
LEE SANG-HEE (KR)
SHIN HUNG-JU (KR)

International Classes:

E02F9/22; F15B7/10; F15B13/02

Foreign References:

KR100337091B1	2002-12-02
KR100974275B1	2010-08-06
KR100974279B1	2010-08-06
KR970001723B1	1997-02-14

Other References: