EP 3754121 A1 20201223 - APPARATUS COMPRISING A HYDRAULIC CIRCUIT
Title (en)
APPARATUS COMPRISING A HYDRAULIC CIRCUIT
Title (de)
VORRICHTUNG MIT EINEM HYDRAULISCHEN KREISLAUF
Title (fr)
APPAREIL COMPRENANT UN CIRCUIT HYDRAULIQUE
Publication
Application
Priority
- EP 20186393 A 20180910
- EP 18193573 A 20180910
Abstract (en)
An apparatus comprising prime mover and a plurality of hydraulic actuators, a hydraulic machine having a rotatable shaft in driven engagement with the prime mover and comprising a plurality of working chambers having a volume which varies cyclically with rotation of the rotatable shaft, 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 which regulates the flow of hydraulic fluid between the working chamber and a low-pressure manifold and a high-pressure valve 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, the apparatus comprising a controller configured to calculate the demand signal in response to a measured property of the hydraulic circuit or one or more actuators, wherein the demand signal is quantised, having one of a plurality of discrete values.
IPC 8 full level
E02F 9/20 (2006.01); B66F 11/04 (2006.01); E02F 3/96 (2006.01); E02F 9/22 (2006.01); F03C 1/053 (2006.01); F03C 1/40 (2006.01); F04B 1/053 (2020.01); F04B 1/063 (2020.01); F04B 7/00 (2006.01); F04B 17/05 (2006.01); F04B 23/06 (2006.01); F04B 49/03 (2006.01); F04B 49/06 (2006.01); F04B 49/22 (2006.01); F04C 9/00 (2006.01); F15B 21/00 (2006.01); F15B 21/08 (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)
- [Y] WO 2013130768 A1 20130906 - EATON CORP [US]
- [Y] WO 2017144875 A1 20170831 - QUOCEANT LTD [GB]
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