Peter U Stambro

US Patent:

20200300273, Sep 24, 2020

Filed:

Oct 5, 2018

Appl. No.:

16/755079

Inventors:

- Rovaniemi, FI
Mika SAHLMAN - Tampere, FI
Jussi MÄKITALO - Tampere, FI
Peter STAMBRO - Hawthorn Woods IL, US

Assignee:

NORRHYDRO OY - Rovaniemi

International Classification:

F15B 1/02

Abstract:

A hydraulic system including: a pressure line; a pump; an actuator; a valve device configured to control the flow of pressurized hydraulic fluid to the actuator; an electronic control unit configured to control the valve device by a control signal proportional to the desired speed of the actuator at any given time; a pressure accumulator capable of supplying, together with the pump, pressurized hydraulic fluid for moving the actuator; a sensor device configured to measure, directly or indirectly, the amount of pressurized hydraulic fluid in the pressure accumulator at any given time; setting devices configured to set a setting signal to be proportional with the desired speed of the actuator at any given time. The electronic control unit is configured to restrict the targeted speed of the actuator not to exceed a predetermined maximum speed which is proportional to the amount of pressurized hydraulic fluid in the pressure accumulator.