HYDRAULIC CIRCUIT - VOLVO CONSTR EQUIP AB

Title:

HYDRAULIC CIRCUIT

Document Type and Number:

WIPO Patent Application WO/2019/093538

Kind Code:

A1

Abstract:

When a first control valve 250 and a second control valve 240 are in non-neutral positions, respectively, a fifth fluid passage 450 and a second fluid passage 420 are closed, thereby generating a first pressure within a fifth portion 451 of the fifth fluid passage 450 and a second pressure within a second portion 421 of the second fluid passage 420, so that the first pressure is applied to a first valve 510 through a fourth fluid passage 440 to move the first valve 510 to close the third fluid passage 430 and a second pressure is applied to the confluence valve 225 through a first fluid passage 410 to move the confluence valve 225 to a confluence position. When the confluence valve 225 is in the confluence position, the confluence valve 225 directs working fluid from a first working fluid supply 110 to the second control valve 240.

Inventors:

KIM DONGWOOK (KR)
JEON MANSEUK (KR)
YUN SEONGGEUN (KR)
SON YOUNGJIN (KR)

Application Number:

PCT/KR2017/012626

Publication Date:

May 16, 2019

Filing Date:

November 08, 2017

Export Citation:

Click for automatic bibliography generation Help

Assignee:

VOLVO CONSTR EQUIP AB (SE)
KIM DONGWOOK (KR)
JEON MANSEUK (KR)
YUN SEONGGEUN (KR)
SON YOUNGJIN (KR)

International Classes:

F15B13/02; F16K11/07

Foreign References:

US20080034748A1	2008-02-14
EP1306492B1	2006-06-21
US20080236154A1	2008-10-02
US20040261405A1	2004-12-30
US20050204734A1	2005-09-22

Other References: