Global Patent Index - EP 3467307 A1

EP 3467307 A1 20190410 - PRESSURE CONTROL OF HYDRAULIC SYSTEM WITH ELECTRIC MOTOR

Title (en)

PRESSURE CONTROL OF HYDRAULIC SYSTEM WITH ELECTRIC MOTOR

Title (de)

DRUCKSTEUERUNG EINES HYDRAULIKSYSTEMS MIT ELEKTROMOTOR

Title (fr)

RÉGLAGE DE LA PRESSION D'UN SYSTÈME HYDRAULIQUE COMPRENANT UN MOTEUR ÉLECTRIQUE

Publication

EP 3467307 A1 20190410 (EN)

Application

EP 17194730 A 20171004

Priority

EP 17194730 A 20171004

Abstract (en)

The present invention relates to a hydraulic system (1), wherein the system comprises a hydraulic device (10), a hydraulic pump (20) in fluid connection with the pressure chamber of the hydraulic device, an electric motor (30) arranged to drive the hydraulic pump, and a motor drive unit (40) configured to control the operation of the electric motor. The hydraulic system further comprises a control unit (50) configured to provide a desired motor torque value to the motor drive unit. The motor drive unit is configured to control the operation of the electric motor to a desired torque based on the desired motor torque value. The present invention further relates to a method of controlling pressure in a hydraulic device (10) in a hydraulic system (1).

IPC 8 full level

F04B 17/03 (2006.01); F04B 49/06 (2006.01)

CPC (source: EP)

F04B 17/03 (2013.01); F04B 49/06 (2013.01)

Citation (applicant)

EP 1882534 A1 20080130 - AIDA ENG LTD [JP]

Citation (search report)

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 3467307 A1 20190410; EP 3467307 B1 20210421; ES 2875355 T3 20211110; HU E054669 T2 20210928; PL 3467307 T3 20211025; PT 3467307 T 20210604; WO 2019068762 A1 20190411

DOCDB simple family (application)

EP 17194730 A 20171004; EP 2018076907 W 20181003; ES 17194730 T 20171004; HU E17194730 A 20171004; PL 17194730 T 20171004; PT 17194730 T 20171004