Title (en)

APPARATUS COMPRISING A HYDRAULIC CIRCUIT

Title (de)

VORRICHTUNG UMFASSEND EINEN HYDRAULIKKREIS

Title (fr)

APPAREIL COMPORTANT UN CIRCUIT HYDRAULIQUE

Publication

EP 3620581 A1 20200311 (EN)

Application

EP 18193573 A 20180910

Priority

EP 18193573 A 20180910

Abstract (en)

A prime mover (22) and a plurality of hydraulic actuators 86,6), a hydraulic machine (32,32) having a rotatable shaft (42) in driven engagement with the prime mover and comprising a plurality of working chambers, a hydraulic circuit extending between a group of one or more working chambers of the hydraulic machine and one or more of the hydraulic actuators, each working chamber of the hydraulic machine comprising a low-pressure valve (52) which regulates the flow of hydraulic fluid between the working chamber and a low-pressure manifold and a high-pressure valve (64) which regulates the flow of hydraulic fluid between the working chamber and a high-pressure manifold. The hydraulic machine being configured to actively control at least the low-pressure valves of the group of one or more working chambers to select the net displacement of hydraulic fluid by each working chamber on each cycle of working chamber volume, and thereby the net displacement of hydraulic fluid by the group of one or more working chambers, responsive to a demand signal, wherein the apparatus further comprises a controller configured to calculate the demand signal in response to a measured property of the hydraulic circuit or one or more actuators.

IPC 8 full level

E02F 9/20 (2006.01); B66F 11/04 (2006.01); E02F 3/96 (2006.01); E02F 9/22 (2006.01); F04B 7/00 (2006.01); F04C 9/00 (2006.01); F15B 21/00 (2006.01); G05B 11/42 (2006.01)

CPC (source: EP)

E02F 3/964 (2013.01); E02F 9/20 (2013.01); E02F 9/2207 (2013.01); E02F 9/2235 (2013.01); E02F 9/2282 (2013.01); F03C 1/045 (2013.01); F03C 1/053 (2013.01); F04B 1/053 (2013.01); F04B 1/063 (2013.01); F04B 7/0076 (2013.01); F04B 17/05 (2013.01); F04B 23/06 (2013.01); F04B 49/03 (2013.01); F04B 49/065 (2013.01); F04B 49/22 (2013.01); F15B 21/087 (2013.01); F04B 2203/0603 (2013.01); F04B 2205/09 (2013.01); F15B 2211/20523 (2013.01); F15B 2211/20553 (2013.01); F15B 2211/20576 (2013.01); F15B 2211/3116 (2013.01); F15B 2211/40507 (2013.01); F15B 2211/41554 (2013.01); F15B 2211/45 (2013.01); F15B 2211/6306 (2013.01); F15B 2211/6309 (2013.01); F15B 2211/6313 (2013.01); F15B 2211/633 (2013.01); F15B 2211/6333 (2013.01); F15B 2211/634 (2013.01); F15B 2211/6346 (2013.01); F15B 2211/6652 (2013.01); F15B 2211/6655 (2013.01); F15B 2211/6656 (2013.01); F15B 2211/6658 (2013.01)

Citation (search report)

• [XY] WO 2013130768 A1 20130906 - EATON CORP [US]
• [Y] EP 2479351 A1 20120725 - SUMITOMO HEAVY INDUSTRIES [JP]
• [Y] EP 0719929 A2 19960703 - HONDA MOTOR CO LTD [JP]
• [A] GB 2477996 A 20110824 - ARTEMIS INTELLIGENT POWER LTD [GB]
• [A] EP 0494236 A1 19920715 - UNIV EDINBURGH [GB]
• [A] WO 2015073330 A1 20150521 - EATON CORP [US]
• [A] US 2017322260 A1 20171109 - ELLWEIN CHRISTIAN [DE], et al
• [A] US 2008282583 A1 20081120 - KOELLNER WALTER G [US], et al
• [A] US 2017009753 A1 20170112 - PFAFF JOE [US], et al

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 3620581 A1 20200311; EP 3620581 B1 20220309; EP 3754121 A1 20201223; EP 3754121 B1 20221012; ES 2930125 T3 20221207; FI 3754121 T3 20230113; PL 3754121 T3 20230206

DOCDB simple family (application)

EP 18193573 A 20180910; EP 20186393 A 20180910; ES 20186393 T 20180910; FI 20186393 T 20180910; PL 20186393 T 20180910