EP 4176139 A1 20230510 - CONTROL SYSTEM OF AN ARM OF A LOADER VEHICLE (CWL)
Title (en)
CONTROL SYSTEM OF AN ARM OF A LOADER VEHICLE (CWL)
Title (de)
STEUERSYSTEM EINES ARMS EINES LADERFAHRZEUGS (CWL)
Title (fr)
SYSTÈME DE COMMANDE D'UN BRAS D'UN VÉHICULE CHARGEUR (CWL)
Publication
Application
Priority
- IT 202000015922 A 20200701
- EP 2021068126 W 20210701
Abstract (en)
[origin: WO2022003085A1] Method of controlling an arm (B) of a mechanical shovel (CWL), in which the mechanical shovel is equipped with a hydrostatic transmission (HY) comprising a first hydraulic pump (HP) arranged to power only a hydraulic motor (HM), a second pump (P) arranged to feed vehicle hydraulic actuators (A1, A2,...), including a first actuator (A1) arranged to control at least the lifting of the arm (B), a hydraulic accumulator (ACC) to accumulate energy under form of pressure, the method comprising the following steps: pressurization of the accumulator exclusively by said hydraulic motor, operating as a pump, during a regenerative braking, supplementation of said second pump by means of said accumulator (ACC) exclusively to supply the first actuator during at least the lifting of the arm (B).
IPC 8 full level
E02F 9/22 (2006.01)
CPC (source: EP)
E02F 9/2217 (2013.01); E02F 9/2296 (2013.01)
Citation (search report)
See references of WO 2022003085A1
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
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
WO 2022003085 A1 20220106; EP 4176139 A1 20230510; IT 202000015922 A1 20220101
DOCDB simple family (application)
EP 2021068126 W 20210701; EP 21737672 A 20210701; IT 202000015922 A 20200701